研究者紹介システム
| 神尾 英治 |  |
| カミオ エイジ | |
| 環境保全推進センター | |
| 准教授 | |
| 応用化学関係 |
研究者情報
所属
【主配置】
環境保全推進センター【配置】
大学院工学研究科 応用化学専攻, 先端膜工学研究センター
学位
研究シーズ
研究シーズ紹介サイトへのリンク授業科目
- 研究指導, 大学院工学研究科 応用化学専攻, 2021
- 特別講義Ｃ（大学院）, 大学院工学研究科 応用化学専攻, 2021
- 分離物理化学1, 大学院工学研究科 応用化学専攻, 2021
- 分離物理化学2, 大学院工学研究科 応用化学専攻, 2021
- 膜工学特論B, 大学院工学研究科 応用化学専攻, 2021
- 反応工学・分離工学実験(a), 工学部 応用化学科, 2021
- 数学演習１, 工学部 応用化学科, 2021
- 数学演習２, 工学部 応用化学科, 2021
- 反応工学・分離工学実験(b), 工学部 応用化学科, 2021
- 特別講義Ｃ（工学部）, 工学部 応用化学科, 2021
- 分離工学演習, 工学部 応用化学科, 2021
- 化学工学概論, 工学部, 2021
- 高度教養セミナー工学部（応用化学）, 工学部, 2021
ジャンル
コメントテーマ
研究ニュース
研究活動
研究キーワード
研究分野
受賞
2019年09月 18th Asian Pacific Confederation of Chemical Engineering Congress (APCChE 2019) Encouragement Award of Separation Process Division, Fundamental investigation on gas permeation mechanism of the facilitated transport membrane with metal containing ionic liquids as an oxygen carrier
2019年03月 先端膜工学研究推進機構春季講演会, ポスター賞, 金属錯体系イオン液体キャリア含有促進輸送膜の酸素透過機構に関する基礎的検討
国内学会・会議・シンポジウム等の賞
2018年09月 化学工学会秋季大会第50年会, 学生賞, 膜-透過分子間相互作用を考慮した多孔性セラミック膜の細孔構造評価
国内学会・会議・シンポジウム等の賞
2018年06月 公益社団法人 新化学技術推進協会, GSCポスター賞, アミノ酸イオン液体含有ゲル膜のワンステップ調製法の開発
国内学会・会議・シンポジウム等の賞
2018年05月 分離技術会 年会2018, 学生賞, Pt内包シリカナノチューブを利用した触媒膜の作製
国内学会・会議・シンポジウム等の賞
2018年03月 化学工学会学生発表会第20回, 優秀賞, グリセロール⾻格を有する温度応答性⾼分⼦の開発と正浸透プロセスへの応⽤
国内学会・会議・シンポジウム等の賞
2018年03月 化学工学会第83回年会, 優秀学生賞, アミノ酸イオン液体含有ゲル薄膜の創製とそのCO2透過機構の解明
国内学会・会議・シンポジウム等の賞
2018年03月 第83回化学工学会年会, 優秀学生賞, 金属錯体系イオン液体の酸素吸収速度におけるカチオンサイズの影響
国内学会・会議・シンポジウム等の賞
2018年03月 平成29年度一般社団法人先端膜工学研究推進機構活動報告及び春季講演会, ポスター賞, CO2分離膜への適用を指向した高強度無機／有機ハイブリッドネットワークイオンゲルのネットワーク形成機構に関する検討
国内学会・会議・シンポジウム等の賞
2017年11月 膜シンポジウム2017, 学生賞, 浸透圧補助低圧逆浸透法を用いた高濃縮膜プロセスの検討
国際学会・会議・シンポジウム等の賞
2017年10月 第4回海水・生活・化学連携シンポジウム, 最優秀ポスター賞, FO膜法による海水淡水化に用いる温度相転移物質の再生に関する検討
国内学会・会議・シンポジウム等の賞
2017年09月 化学工学会第49回秋季大会, 分離プロセス部会ポスターセッションポスター賞, ニオブ酸ナノシート積層型分離膜のシートサイズが及ぼす膜性能への影響
国内学会・会議・シンポジウム等の賞
2017年05月 日本膜学会第(39年会), 学生賞, 温度相転移性正浸透駆動溶液の特異な浸透圧挙動に関する基礎的検討
国内学会・会議・シンポジウム等の賞
2017年04月 The 5th Asian Graduate Student Symposium on Membrane Engineering, The Best Student Oral Presentation Award at AGSM, Development of Novel Co(II) Containing Ionic Liquid as an Oxygen Carrier
国際学会・会議・シンポジウム等の賞
2016年 化学工学会第82回年会, 優秀学生賞 化学工学会第82回年会, ポリアミド活性層の表面改質が及ぼす正浸透膜法による糖液濃縮およびバイオエタノール生産への影響
国内学会・会議・シンポジウム等の賞
2016年 日本海水学会若手会第8回学生研究発表会, 日本海水学会若手会 第8回学生研究発表会 優秀賞, 浸透圧補助低圧逆浸透法による海水濃縮技術に関する基礎的検討
国内学会・会議・シンポジウム等の賞
2016年 公益社団法人 新化学技術推進協会第5回JACI GSCシンポジウム, 第5回JACI GSCシンポジウム ポスター賞, Amino acid ionic liquid-based ion gel membranes with high CO2 separation efficiency for ventilation application
国内学会・会議・シンポジウム等の賞
2016年 第19回化学工学会学生発表会(豊中大会), 第19回化学工学会学生発表会 優秀賞, 有機キレートを用いた多孔性TiO2-ZrO2複合膜の作製と構造評価
国内学会・会議・シンポジウム等の賞
2016年 化学工学会第48回秋季大会, 化学工学会秋季大会 優秀ポスター賞, Development of tough ion gel membrane containing a CO2 reactive ionic liquid by casting method
国内学会・会議・シンポジウム等の賞
2016年 先端膜工学研究推進機構春季講演会, ポスター賞 先端膜工学研究推進機構春季講演会, イオン液体型キャリアを用いた酸素促進輸送膜の開発
国内学会・会議・シンポジウム等の賞
2016年 The 4th Asian Graduate Student Symposium on Membrane Engineering (AGSM4), The 4th Asian Graduate Student Symposium on Membrane Engineering 優秀発表賞, High performance ion gel membrane for CO2/N2 separation
国際学会・会議・シンポジウム等の賞
2016年 The 10th Conference of Aseanian Membrane Society, The 10th Conference of Aseanian Membrane Society ポスター賞, High CO2 separation Performance Double Network Ion Gel Membranes with Excellent Pressure Stability
国際学会・会議・シンポジウム等の賞
2015年03月 化学工学会, 銅賞, 自己修復性有機‐無機ハイブリッドネットワークを有する高強度イオンゲルの創製
国内学会・会議・シンポジウム等の賞
2015年03月 先端膜工学機構, 先端膜工学機構 ポスター賞, CO2分離膜への応用を目指した反応性イオン液体の分子設計
国内学会・会議・シンポジウム等の賞
2015年 膜シンポジウム2015, 膜シンポジウム ポスター発表学生賞, Amino acid ionic liquids-based ion gel membranes with superior CO2 separation performance under pressurized ondition
国内学会・会議・シンポジウム等の賞
2015年 化学工学会第81年会本部大会(大阪), 第18回化学工学会 優秀学生賞, 圧力場でのCO2分離を指向した低粘性反応性イオン液体含有ゲル膜の創製
国内学会・会議・シンポジウム等の賞
2014年11月 ICMST, ICMST 優秀ポスター賞, Fundamental Investigation on Removal of Low Concentration Cesium from Radioactive Polluted Water with Reverse Osmosis membrane
国際学会・会議・シンポジウム等の賞
2014年11月 膜シンポジウム, _学生賞, 耐圧性と迅速なCO2透過性を有する相互侵入高分子網目イオンゲルフィルムの開発
国内学会・会議・シンポジウム等の賞
2014年03月 先端膜工学研究推進機構, 先端膜工学研究推進機構春期講演会ポスター賞, 高強度Double networkイオンゲルフィルムを用いた耐圧性CO2分離膜
日本国国内学会・会議・シンポジウム等の賞
2013年09月 化学工学会, 化学工学会第45回秋季大会ポスター賞4, アミノ酸イオン液体を溶媒とする新規イオノゲルの創製と二酸化炭素分離膜への応用
日本国国内学会・会議・シンポジウム等の賞
2013年07月 Aseanian Membrane Society, The 8th Conference of Aseanian Membrane Society, China Student Award, Preparation of Biomimetic Reverse Osmosis Membrane Using Phospholipid Bilayers and Gramicidin A via Electrostatic Interaction
中華人民共和国国際学会・会議・シンポジウム等の賞
論文
Amino acid ionic liquids (AAILs) are used as a CO2 carrier in facilitated transport membranes (FTM) due to their high CO2 permselectivity. However, estimating the membrane performance of these FTMs is difficult because the viscosity of the AAIL increases with the CO2 absorption. Therefore, potential models were investigated to accurately estimate the CO2 permeability of an AAIL-based FTM. Herein, models were constructed to estimate the CO2 absorption amount and viscosity of the AAIL through simulations at various CO2 partial pressures and temperatures. Furthermore, the CO2 permeability of the AAIL-based FTM at various conditions were estimated based on the models and compared to the experimental data. Consequently, we reported a model that expressed the viscosity gradient of the AAIL in the FTM by dividing the membrane into small intervals to estimate the CO2 permeability with high accuracy.
2022年01月01日, Separation and Purification Technology, 280研究論文（学術雑誌）
Organic solvent nanofiltration (OSN) is an energy-efficient alternative to distillation and evaporation for the separation of mixtures containing organic liquids. Laminar membranes using nanosheets as building blocks have great potential for OSN; however, a swelling of the interlayer spacing causes a severe decrease in the separation performance. Here, we present laminar HNb3O8-based composite membranes fabricated by vacuum filtration on an anodic aluminum oxide support for OSN applications. The laminar HNb3O8 membranes and composite (graphene oxide (GO) and HNb3O8) membranes were found to possess stable structures in various alcohols without severe swelling. As a result, the HNb3O8-based membranes showed higher dye rejections than the GO membrane. Among the HNb3O8-based membranes, the layered GO/HNb3O8 membrane had superior dye rejections in methanol (89.6% for Evans blue, 73.4% for acid red 265, and 43.4% for methyl orange) compared with the GO membranes. Alcohol permeation tests implied that the molecular diameter, rather than the solvent viscosity, was the dominant factor in the superior performance of the layered GO/HNb3O8 membrane. Molecular dynamics simulations suggest a stable GO/HNb3O8 interlayer ranging from around 1.165 to 1.333 nm, and a dense heterolayer formation at the interface between the HNb3O8 and GO layers. This heterolayer formation performs important roles in alcohol permeation and separation of organic dyes. Furthermore, the layered GO/HNb3O8 membrane showed stable permeation of a model photoresist waste liquid for 6 weeks and an excellent rejection of the photoresist waste, over 91%. We propose that laminar HNb3O8-based membranes have great potential for OSN applications.
2021年12月15日, Journal of Membrane Science, 640研究論文（学術雑誌）
Two-dimensional (2D) laminar membranes are attracting much attention in organic solvent nanofiltration owing to the promising permeation and selective performance derived from their 2D ultrathin separation layer. However, owing to easy swelling (enlargement of interlayer spacing), controlling the interlayer spacing in organic solvents and stable solvent permeation are major issues for their application to organic solvent systems. In this study, laminar GO membranes were fabricated on a porous polyketone (PK) support membrane using triethanolamine (TEOA) as crosslinker (GO-TEOA/PK). The interlayer spacing (d) between GO sheets was characterized by X-ray diffraction. The TEOA crosslinker effectively suppressed swelling of the GO laminar structure. For GO-TEOA/PK, the variation in d corresponded well with the affinity between TEOA and each solvent, Ra(TEOA–solvent), as estimated using the Hansen solubility parameters. Furthermore, common linear correlation between the permeance of alcohols and the parameter combining affinity, viscosity, and equivalent molar diameter was clearly observed. Therefore, the affinity between crosslinker and solvent was an important factor in controlling interlayer spacing and solvent permeation in the laminar GO membranes containing crosslinker.
2021年12月01日, Separation and Purification Technology, 276研究論文（学術雑誌）
In this work, several types of ionic liquid (IL)-based thermosensitive draw solutions (DSs) were prepared for application in the forward osmosis (FO) process. The temperature dependence of the osmotic pressure of IL-based DS was investigated to examine the advantages of high-temperature membrane operation for regeneration and water recovery from the DS lean phase after liquid–liquid phase separation of DS with a lower critical solution temperature (LCST). From surface tension and dynamic light scattering measurements, it was found that the association of IL molecules and aggregation of IL associates occurred in hot water, which led to a decrease in the osmotic pressure of the IL-DS at elevated temperatures. The DS regeneration and water recovery using an RO membrane were examined using tetrabutylammonium 2,4,6-trimethylbenzenesulfonate with the largest temperature dependence on osmotic pressure. At elevated temperatures, the water flux and DS concentration in the concentrated solution increased effectively. The investigation demonstrated that high-temperature membrane operation is effective for the regeneration of LCST-type thermosensitive DS and water recovery.
2021年11月15日, Separation and Purification Technology, 275研究論文（学術雑誌）
An inorganic/organic micro-double-network (mu-DN) ion gel-based composite membrane with good mechanical properties and high CO2 permeance was developed in this study. The mu-DN ion gel was composed of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C(4)mim][Tf2N]), a cross-linked polymer network, and silica nanoparticle clusters. The mechanical strength of the mu-DN ion gel was optimized to achieve a fracture energy of 636 kJ/m(3). The fabricated composite membrane with an ion gel layer thickness of 4.5 mu m shows a CO2/N-2 permselectivity of 23 and a CO2 permeance of 119 GPU. The gas permeance of the composite membranes was calculated by considering a series of diffusion processes, and the results were in good agreement with the experimental data. The calculation results obtained using the proposed model show high potential of our mu-DN ion gel to achieve much higher CO2 permeance.
AMER CHEMICAL SOC, 2021年09月, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60 (34), 12698 - 12708, 英語研究論文（学術雑誌）
A micro-double-network (mu-DN) ion gel membrane was fabricated using nonvolatile network precursors comprising a presynthesized cross-linkable polymer as the organic part, silica nanoparticles as the inorganic part, and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C(4)mim][Tf2N]). The mechanical properties of the ion gel were effectively improved through optimizing the molecular weight of the cross-linkable polymer and the organic/inorganic network composition. The mu-DN ion gel membranes exhibited the CO2 permeability of approximately 920 Barrer under atmospheric pressure, which is much higher than those of the classic double-network ion gel membranes fabricated using volatile network precursors (556 Barrer) and the supported ionic liquid membranes (617 Barrer). The membrane also has good pressure resistance and long-term stability. The mu-DN ion gel membrane formed by nonvolatile network precursors shows good mechanical properties and high CO2 separation performance, which make it a good candidate base material for developing high-permeance thin ion gel membranes.
AMER CHEMICAL SOC, 2021年09月, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60 (34), 12640 - 12649, 英語研究論文（学術雑誌）
Forward osmosis (FO) membrane process is expected to realize energy-saving seawater desalination. To this end, energy-saving water recovery from a draw solution (DS) and effective DS regeneration are essential. Recently, thermo-responsive DSs have been developed to realize energy-saving water recovery and DS regeneration. We previously reported that high-temperature reverse osmosis (RO) treatment was effective in recovering water from a thermo-responsive ionic liquid (IL)-based DS. In this study, to confirm the advantages of the high-temperature RO operation, thermo-sensitive IL-based DS was treated by an RO membrane at temperatures higher than the lower critical solution temperature (LCST) of the DS. Tetrabutylammonium 2,4,6-trimethylbenznenesulfonate ([N4444 ][TMBS]) with an LCST of 58◦C was used as the DS. The high-temperature RO treatment was conducted at 60◦C above the LCST using the [N4444 ][TMBS]-based DS-lean phase after phase separation. Because the [N4444 ][TMBS]-based DS has a significantly temperature-dependent osmotic pressure, the DS-lean phase can be concentrated to an osmotic pressure higher than that of seawater at room temperature (20◦C). In addition, water can be effectively recovered from the DS-lean phase until the DS concentration increased to 40 wt%, and the final DS concentration reached 70 wt%. From the results, the advantages of RO treatment of the thermo-responsive DS at temperatures higher than the LCST were confirmed.
2021年08月, Membranes, 11 (8)研究論文（学術雑誌）
In this study, we developed a novel forward osmosis (FO) simulation method for a multicomponent system (water, NaCl, and thermoresponsive ethylene oxide-propylene oxide-based copolymer draw solute) targeted for direct seawater desalination using a hollow fiber (HF) membrane module. Box complex method was applied to numerically solve the FO simulation model of a three-component system. A good agreement between experimental and simulation results obtained in various operation conditions allowed us to estimate not only the effect of NaCl and draw solution (DS) concentration on the resulting water permeate flow rate but also the osmotic pressure inside and outside of the HF membranes. From the analysis, the HF modules were designed to decrease the dilution of the draw solution (DS) inside the module due to water permeation. We validated the suggestion by simulation of the increase of the water permeation rate in the modified HF modules, which were designed for the smooth flow of the DS to decrease the DS dilution. The simulation was further verified by reasonable results indicating that the decrease of NaCl concentration in the feed water is also effective in increasing the water permeation rate in the current HF module.
AMER CHEMICAL SOC, 2021年07月, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60 (26), 9548 - 9559, 英語研究論文（学術雑誌）
The controlling factor of the CO2 permeance of an ion gel membrane containing a task-specific ionic liquid (tetraphosphonium prolinate) as the CO2 carrier was investigated. Tough double-network (DN) ion gel membranes with different thicknesses were fabricated, and their CO2 permeances were evaluated. The results showed that the CO2 permeance of the DN ion gel membrane was not inversely proportional to the membrane thickness, indicating that the CO2 permeance of the membrane was not controlled by diffusion. A theoretical analysis of the relationship between CO2 permeance and the thickness of the membrane revealed that the CO2 stripping rate at the permeate side greatly affected the CO2 permeance of the DN ion gel membrane. Therefore, increasing the decomposition reaction rate of the CO2-carrier complex would be the most important issue for achieving a high CO2 permeance of ion gel membranes containing a task-specific ionic liquid.
AMER CHEMICAL SOC, 2021年05月, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60 (19), 7397 - 7405, 英語研究論文（学術雑誌）
Two-dimensional (2D) nanomaterials (nanosheets) are promising building blocks of functional membranes for molecular separation. The design of 2D nanochannels with a locally tuned interfacial layer is a key strategy for improving the separation performance. Here, we present a 2D laminar membrane with an interfacial dense heterolayer comprising HNb3O8 nanosheets (NbNs) and graphene oxide (GO) for application to a nanofiltration membrane, which we formed by a successive vacuum filtration process. Despite its simple double-layered structure, the GO/NbN membrane showed superior separation performance for Na2SO4 rejection (94.0%) to the GO membrane (58.1%) and NbN membrane (48.7%). The hydraulic resistance (Rm) of the layered GO/NbN membrane was approximately double the theoretical value, which was estimated by adding the Rm values of the two respective layers. Molecular dynamics simulations suggested a stable GO/HNb3O8 interlayer spacing with a minimum interaction energy of only 1.0 nm. We attribute the higher rejection with the layered GO/NbN membrane to a lower diffusivity of ions than in the GO membranes because of the narrower space and stronger interaction between nanosheet surfaces. We propose that the layered GO/NbN membrane has an interfacial dense heterolayer, which is fundamentally different from previously reported laminar membranes.
American Chemical Society (ACS), 2021年03月04日, ACS Applied Nano Materials, 4 (4), 3455 - 3466研究論文（学術雑誌）
Methyl gallate (MG) and ethyl ferulate (EF) with a benzene ring were separately used as aromatic organic chelating ligands (aOCLs) to prepare two versions of TiO2-ZrO2-aOCL composite sols via hydrolysis and polycondensation reactions with titanium(IV) isopropoxide (Ti(OC3H7)4) and zirconium(IV) butoxide (Zr(OC4H9)4). Thermogravimetric and FT-IR analysis of dry gels revealed that aromatic rings were present in the residual organic matter when the gel was fired under nitrogen at 300 °C. In X-ray diffraction (XRD) measurements, the TiO2-ZrO2 composite material prepared using these two aOCLs showed an amorphous structure with no crystalline peaks for TiO2 and ZrO2. In N2 adsorption/desorption measurements at 77 K, the TiO2-ZrO2 samples using the aOCLs as a template appeared porous with a larger specific surface area than TiO2-ZrO2 without aOCL. TiO2-ZrO2-aOCL composite membranes were prepared by coating and firing TiO2-ZrO2-aOCL sol onto a SiO2 intermediate layer using an α-alumina porous tube as a substrate. Compared with the TiO2-ZrO2 membrane, the TiO2-ZrO2-aOCL membranes had higher gas permselectivity. The TiO2-ZrO2-EF membrane showed a He permeance of 2.69 × 10-6 mol m-2 s-1 Pa-1 with permeance ratios of He/N2 = 10.6 and He/CF4 = 163, while the TiO2-ZrO2-MG membrane revealed a bit less He permeance at 8.56 × 10-7 mol m-2 s-1 Pa-1 with greater permeance ratios of He/N2 = 61.7 and He/CF4 = 209 at 200 °C. A microporous TiO2-ZrO2 amorphous structure was obtained by introducing aOCL. The differences in the side chains of each aOCL could possibly account for the differences in the microporous structures of the resultant TiO2-ZrO2-aOCL membranes.
2020年12月01日, Membranes, 10 (12), 1 - 21, 英語, 国際誌研究論文（学術雑誌）
© 2020 Elsevier B.V. Metal-containing ionic liquids (MCILs) composed of a cobalt(II) Schiff base complex and ionic-liquid-based axial ligands (ligand ILs) are potential O2 absorbents. To determine the design criteria of MCILs with both highly selective O2 absorbability and low viscosity, the relationship between the physicochemical properties and chemical structure of the MCILs was investigated. The measurement of the amount of O2 absorbed in MCILs with various ligand ILs indicated that O2 reactivity is determined by the electron density of the Co atom of the MCILs. The electron density of the Co atom could be controlled by the σ electron donation ability of the ligand ILs. Moreover, the viscosity of the MCILs was strongly affected by the interaction among the MCIL molecules caused by the π electron system. This interaction was weakened by the equatorially coordinating Schiff base and the ligand ILs within the chemical structure. Therefore, to develop MCILs with both high O2 reactivity and low viscosity, suppression of the interaction caused by the π electron system without decreasing the electron density of the Co atom is important.
2020年11月15日, Journal of Molecular Liquids, 318[査読有り]
研究論文（学術雑誌）
© 2020 Elsevier B.V. In this study, we fabricated porous polyketone (PK) support membranes with high pressure resistance and low structural parameter (S) by surface modification with aromatic compounds for osmotically driven membrane process applications. The effects of surface modification of PK using aromatic compounds on the membrane structure, mechanical properties, and membrane performance were investigated. Based on an estimation of the affinity between PK and aromatic compounds using Hansen solubility parameters and mechanical properties, m-phenylenediamine (MPD) was selected as an appropriate chemical modifier for PK membranes. The PK support membranes modified with MPD (PK-MPD) had a dense structure on the bottom side. The thickness and porosity of the PK membranes were changed by the treatment temperature. As a result, polyamide (PA)/PK-MPD thin film composite membranes showed superior pressure resistance in reverse osmosis. PA/PK-MPD modified at 110 °C possessed the highest pressure resistance of 21 bar, which was 3.5 times higher than that of the PA/untreated PK membrane, while maintaining a high water flux of 19.4 L m−2 h−1 in FO. This performance overcame the trade-off relationships between pressure resistance and FO flux and between pressure resistance and S value.
2020年11月15日, Separation and Purification Technology, 251[査読有り]
研究論文（学術雑誌）
© 2020 Elsevier B.V. Metal-containing ionic liquids (MCILs) composed of a cobalt(II)–salen complex and ionic liquid-based axial ligands (ligand ILs) can chemically absorb O2 and act as O2 carriers in facilitated transport membranes. O2 and N2 permeation tests using supported MCIL membranes with various MCILs revealed that the effective diffusion coefficients of N2 and O2–MCIL complexes did not follow to the trend expected by power law theories against viscosity (e.g. the Stokes–Einstein equation), because the MCILs are not in normal liquid state due to the strong intermolecular interaction, but instead showed a tendency predicted by the free volume theory. This means the MCILs behave as a solid rather than a liquid, and N2, O2, and the O2–MCIL complexes would diffuse through the free volume of the MCILs. The solubility selectivity and the diffusion selectivity of the supported MCIL membrane decreased and increased, respectively, with the increase on MCIL molecular wight (free volume). Thus, there was trade-off relationship between the solution selectivity and the diffusion selectivity. It was suggested that the most important criteria for designing MCILs for highly selective O2 permeation in supported MCIL membranes is the use of an O2-absorbable metal complex without the strong intermolecular interaction.
Elsevier BV, 2020年10月01日, Separation and Purification Technology, 248, 117018 - 117018[査読有り]
研究論文（学術雑誌）
© 2020 Institution of Chemical Engineers Reverse osmosis (RO) is commonly used to concentrate solutions in food preparation and environmental applications among others. Limitations on the applied pressure, which must be higher than the osmotic pressure of the feed solution, determine the concentration that can be achieved by RO. Recently, an osmotically assisted reverse osmosis (OARO) system that can be operated even with low applied pressure has been suggested as a new concentration process. In this study, we performed concentration tests on a multistage OARO system that used two types of hollow fiber (HF) membrane modules made from cellulose triacetate with different numbers of HFs. Water permeated through the membrane and the concentration increased as it progressed through the modules, even when using concentrated NaCl solutions (1.0 and 2.0 M) with low applied pressures (10 and 15 bar). The concentration increased in each of ten stages in a multistage concentration test. Water flux and concentration ratio were strongly influenced by the internal concentration polarization in the modules.
2020年10月, Chemical Engineering Research and Design, 162, 117 - 124[査読有り]
研究論文（学術雑誌）
This journal is © The Royal Society of Chemistry. We have previously reported tough inorganic/organic nanocomposite (NC) ion gels composed of silica particles and poly(N,N-dimethylacrylamide) (PDMAAm) networks and a large amount of ionic liquid. In this study, the network structure and toughening mechanism of NC ion gels were investigated. The NC ion gels showed characteristic mechanical properties; i.e. the stress was significantly increased at a highly elongated state. In addition, the NC ion gels showed an almost elastic mechanical property, which was completely different from that of our other developed inorganic/organic tough ion gels named double-network (DN) ion gels. It was found from structural observation that secondary silica nanoparticles dispersed well in the NC ion gel. It was also found that some of the secondary silica nanoparticles had a ring-like structure which would incorporate PDMAAm chains. From the silica particle content dependency on stress-strain curves of inorganic/organic NC ion gels, it was inferred that the secondary silica particles could serve as a movable cross-linker of PDMAAm chains in the NC ion gel.
ROYAL SOC CHEMISTRY, 2020年04月, RSC Advances, 10 (24), 14451 - 14457, 英語[査読有り]
研究論文（学術雑誌）
This journal is © 2020 The Royal Society of Chemistry. Inorganic/organic double network (DN) ion gels, which are composed of an inorganic silica particle network, an organic poly(N,N-dimethylacrylamide) (PDMAAm) network, and a large amount of ionic liquid, showed excellent mechanical strength of over 25 MPa compression fracture stress at an 80 wt% ionic liquid content. The excellent mechanical strength of these inorganic/organic DN ion gels was attributed to the energy dissipation of the inorganic/organic DN structure. It has been considered that the energy dissipation in inorganic/organic DN ion gels is caused by the internal fracture of the silica particle network, which is preferentially fractured by deformation. However, no studies aiming to investigate the internal fracture of the silica particle network in inorganic/organic DN ion gels have been conducted by direct approaches. In this study, the internal fracture of the silica particle network in the inorganic/organic DN ion gel was directly evaluated by a small angle X-ray scattering (SAXS) technique. The synchrotron SAXS measurements conducted under a uniaxial loading-unloading process demonstrated that the aggregation size of the silica particle network irreversibly decreased with uniaxial stretch. Based on these results, it was clarified that the energy dissipation of the inorganic/organic DN ion gels was attributed to the internal fracture of the silica particle network.
ROYAL SOC CHEMISTRY, 2020年03月07日, Soft Matter, 16 (9), 2363 - 2370, 英語[査読有り]
研究論文（学術雑誌）
Copyright © 2020 American Chemical Society. A hollow fiber-type facilitated transport membrane composed of an ionic liquid-based polymer network gel layer with amino acid as the CO2 carrier and a porous polysulfone support membrane was developed. A polymerized ionic liquid-based gel layer with glycinate was the best amino acidate examined in this study. Filtering the gel particles by the support membrane, a gel layer with a thickness of about 1 μm could be formed on the inner surface of the support. The developed membrane showed promising potential for CO2 capture from air because of its high CO2 permeance of about 1400 GPU and excellent CO2/N2 selectivity of more than 2000 under atmospheric pressure with CO2 pressure of 0.1 kPa at 30 °C. Because the developed membrane showed significant diffusion resistance in the pores of the support membrane, it was suggested that the performance of the composite membrane could be improved by optimizing the support membrane structure.
AMER CHEMICAL SOC, 2020年02月05日, Industrial and Engineering Chemistry Research, 59 (5), 2083 - 2092, 英語[査読有り]
研究論文（学術雑誌）
© 2019 Elsevier B.V. Membranes assembled by two-dimensional (2D) nanosheets have high potential for advanced molecular separation. The intercalation of nanomaterials into the laminar membrane is a promising strategy to control the nanochannel structure. We present 2D niobate nanosheet (NbN)-Graphene oxide (GO) composite membranes fabricated by simple vacuum filtration. The effect of the weight ratio of NbN/GO on the membrane structures and performances is investigated. The NbN-rich membranes have a more stable structure in the wet condition and a membrane structure with a larger channel size compared with GO-rich membranes. Especially, NbN55-GO45 (weight ratio of NbN/GO = 55/45) shows a superior water permeability of 20 L m−2 h−1 bar−1, which is around 6 times higher than an NbN membrane (NbN100) and 2 times higher than a GO membrane (GO100), while maintaining good rejection abilities of an anionic dye (nearly 100% for Evans blue) and salt (60% for Na2SO4). Different models for the water pathway through nanochannels can be classified according to the composite ratio of the NbN-GO membranes.
ELSEVIER, 2020年02月01日, Journal of Membrane Science, 595, 英語[査読有り]
研究論文（学術雑誌）
© 2019 Institution of Chemical Engineers It is well known that facilitated transport membranes (FTMs) containing CO2 carriers have high CO2 permeability and excellent permselectivity of CO2 over other light gases. The major challenge in developing FTMs for practical applications is the formation of a separation layer containing CO2 carriers on a support membrane. In this research, we prepared composite membranes by forming a dense gel layer containing glycine as the CO2 carrier on polysulfone (PSf) and ceramic (α-alumina) support membranes. Because of the smaller pore size of the PSf support membrane, the gel layer formed on the PSf membrane was thinner and had higher CO2 permeance than that formed on the alumina membrane. However, the CO2 permeabilities of the FTMs formed on the two support membranes showed different temperature dependences; the FTM formed on PSf membrane had higher CO2 permeability at elevated temperatures of more than ca. 350 K and lower CO2 permeability at low temperatures up to ca. 350 K than the FTM formed on alumina support. The different temperature dependences on the CO2 permeability resulted from the different properties of the gel layer formed on the support membranes. Improvement of the CO2 permeability of FTMs could be enabled by selecting an adequate support membrane.
ELSEVIER, 2020年01月, Chemical Engineering Research and Design, 153, 284 - 293, 英語[査読有り]
研究論文（学術雑誌）
Copyright © 2020 American Chemical Society. Tough micro-double-network (μ-DN) ion gels, composed of interpenetrating inorganic and organic networks swollen with 80 wt % of an ionic liquid, were fabricated in an open system using nonvolatile materials: silica nanoparticles for the inorganic network, a cross-linkable polymer for the organic network, and an ionic liquid. The cross-linkable copolymer, poly(N,N-dimethylacrylamide-co-N-succinimidyl acrylate) synthesized by reversible addition-fragmentation chain transfer polymerization, was cross-linked in situ with a diamine to form the organic network. On the application of load, the inorganic network was partly destroyed resulting in substantial energy dissipation, but the organic network acted as hidden length to suppress the macroscopic destruction of the μ-DN ion gel. The modulus, fracture strength, and strain-to-break of the μ-DN ion gels were tuned by varying the cross-linking degree of the organic network, which could be controlled by changing either the succinimidyl acrylate content of the cross-linkable polymer or the cross-linkable polymer concentration in the precursor solution.
2020年, Macromolecules, 53 (19), 8529 - 8538[査読有り]
研究論文（学術雑誌）
© 2020, The Society of Polymer Science, Japan. To examine the potential of ion gels as materials for CO2 separation membranes, inorganic/organic double-network ion gel (DN ion gel) membranes with different ionic liquid (IL) contents were fabricated. The composition of the inorganic and organic networks was optimized to maximize the mechanical strength of the DN ion gel. The DN ion gel with an inorganic/organic network composition of 0.35 mol/mol showed the maximum mechanical strength because the inorganic and organic networks sufficiently acted as sacrificial bonds and hidden lengths, respectively. Using DN ion gel membranes with different IL contents prepared with the optimized precursor solution, the relationship between the CO2 permeability and IL content of the DN ion gel membranes was examined. The DN ion gel membrane with 95.2 wt% IL had a CO2 permeability of 1380 barrer, which was ~67% of the theoretical maximum predicted for the pure IL membrane. The CO2 permeability of the DN ion gel membrane exponentially increased with increasing IL content and approached the theoretical maximum. DN ion gels with high strength can be used to develop maximum-performance IL-based CO2 separation membranes by giving the membrane the maximum IL potential.
2020年, Polymer Journal, 53 (1), 137 - 147[査読有り]
研究論文（学術雑誌）
Copyright © 2019 American Chemical Society. To control the properties of Co(II)(salen)-based metal-containing ionic liquids (MCILs) for use as O2 absorbents, the effects of the MCIL chemical structures on viscosity, O2 absorption amount, and complex-formation reaction rates between O2 and MCILs were investigated. The chemical structures of the MCILs were systematically changed by coordinating the ligand ILs composed of phosphonium cations with different alkyl-chain lengths and N-methylglycinate or bis(trifluoromethylsulfonyl)imide anion to Co(salen). A series of investigations indicated that intermolecular hydrogen bonding and entanglement of the alkyl chain affected the viscosity of the MCILs. Furthermore, small MCILs afforded large O2 absorption amounts, high O2/N2 absorption selectivities, and fast O2 absorption reaction. From a numerical calculation of the overall MCIL O2 absorption rate, it was clarified that the dominant mass-transfer resistance was the diffusion of the O2-MCIL complex in the MCIL. Based on these results, the design criteria of the MCILs for an efficient O2 absorbent were revealed.
AMER CHEMICAL SOC, 2019年12月26日, Industrial and Engineering Chemistry Research, 58 (51), 23304 - 23316, 英語[査読有り]
研究論文（学術雑誌）
© 2019 Elsevier B.V. Organic chelate ligand (OCL)-templated TiO2–ZrO2 nanofiltration membranes were fabricated. Three types of OLCs, isoeugenol (ISOH), 2,3-dihydroxynaphthalene (DHN), and ethyl acetoacetate (EAA) were examined for use in the preparation of a TiO2–ZrO2 thin separation layer. All employed OCLs were completely decomposed and removed with firing at 500 °C under air, but OCL-templated TiO2–ZrO2 composite materials maintained their amorphous structure after firing. ISOH- and DHN-templated TiO2–ZrO2 composite powder samples were more microporous with a higher BET specific surface area than ordinary pure TiO2–ZrO2 composite material without OCL. On the other hand, EAA-templated TiO2–ZrO2 had a less-microporous structure similar to that of non-templated TiO2–ZrO2 powder. The average pore sizes of ISOH-, DHN-, and EAA-templated membranes were 2.0, 2.0, and 1.4 nm, respectively, while that of a non-templated TiO2–ZrO2 membrane was 1.4 nm. ISOH and DHN were more effective as an OCL for changing the characteristics of ordinary TiO2–ZrO2 composite materials. The molecular weight cut-off (MWCO) of OCL-templated TiO2–ZrO2 membranes was 600–1000 g/mol, and water permeability was 3.7–11.4 l/(m2 h bar) (LMH/bar). OCLs could be useful for improvements in the water permeability of porous ceramic membranes that retain their solute rejection or separation characteristics.
ELSEVIER, 2019年12月01日, Journal of Membrane Science, 591, 英語[査読有り]
研究論文（学術雑誌）
© 2019 Elsevier B.V. Niobate nanosheet membranes were fabricated by vacuum filtration using niobate nanosheets prepared by the hydrothermal method (HT-NbO membranes) and the exfoliation method (EX-NbO membranes). Membrane structure, water permeance and separation performance for these membrane types were measured and compared. Both membrane types had a dense structure and retained high structural stability in water via chemical cross-linking between sheets. The difference of the intercalated molecules and interaction between nanosheets affected the interlayer distance of the membranes. As a result, higher water permeance but lower rejection of polyethylene glycol, Na2SO4 and Acid Red 265 was observed for EX-NbO membranes than for HT-NbO membranes. This is due to the formation of larger nanochannels in EX-NbO membranes. A model of a water pathway through nanochannels based on void structure proposed for the HT-NbO membranes can also be applied for EX-NbO membranes.
ELSEVIER SCIENCE BV, 2019年07月15日, Separation and Purification Technology, 219, 222 - 229, 英語[査読有り]
研究論文（学術雑誌）
© 2019 American Chemical Society. Solution concentration processes such as evaporation, freeze concentration, and reverse osmosis are commonly used in food processing and environmental applications. However, these processes are frequently examined to lower energy costs and improve concentration ratios. This study performed concentration tests and theoretical calculations for osmotically assisted reverse osmosis (OARO) using a pilot-scale hollow-fiber membrane module. In the concentration test using NaCl solution, water flux and concentration ratio were measured with changing flow rate, concentration, and applied pressure. Water permeation and solution concentration were achieved, even using concentrated salt solutions (0.5 and 1.0 M), with applied pressure of 8-12 bar, which was lower than the osmotic pressure (25 bar for 0.5 M NaCl; 50 bar for 1.0 M NaCl). The calculation results were in good agreement with the experimental results, and the validity of the calculation model was confirmed. Analysis revealed that the concentration gradient and concentration polarization in the module changed with operating conditions, and these factors affected the water flux and the concentration ratio.
AMER CHEMICAL SOC, 2019年04月, Industrial and Engineering Chemistry Research, 58 (16), 6721 - 6729, 英語[査読有り]
研究論文（学術雑誌）
© 2018 Elsevier B.V. Thermo-responsive ionic liquids (ILs) were examined as draw solutions in forward osmosis (FO) membrane process. We synthesized several ILs to understand the relationship between the hydrophilicity/hydrophobicity balance of ILs and the osmolality and phase diagram of the IL aqueous solutions. An increase in the hydrophobicity led to a decrease in the osmolality because of the formation of IL-based aggregates in water. At the critical aggregation concentration (CAC), the osmolality was drastically changed. Above the CAC, the water-rich phase appeared after liquid–liquid separation at elevated temperature. The osmolality, phase separation temperature, viscosity, and water-drawing ability of the IL-based draw solution could be controlled by controlling the chemical structure and hydrophilic/hydrophobic balance of ILs. The IL with small molecular weight and low viscosity showed the comparable water permeability as the NaCl aqueous solution and the possibility of repeated use. Prevention of the IL leakage through FO membrane is a future subject.
ELSEVIER SCIENCE BV, 2019年01月15日, Journal of Membrane Science, 570-571, 93 - 102, 英語[査読有り]
研究論文（学術雑誌）
© 2019 The Royal Society of Chemistry. Tough and stretchable inorganic/organic double network ion gels containing gemini-type ionic liquids with two OH groups in the di-cation, which can work as multiple hydrogen bond-based weak cross-linkers of the gel networks, are developed.
ROYAL SOC CHEMISTRY, 2019年, RSC Advances, 9 (21), 11870 - 11876, 英語[査読有り]
研究論文（学術雑誌）
© 2018, © 2018 Taylor & Francis. Tough gel membrane composed of a large amount of an ionic liquid and an inorganic/organic composite double-network (inorganic/organic DN ion gel membrane) was examined to remove toluene vapor from toluene vapor/N2 mixed gas. The DN ion gel membrane with 80 wt% of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide showed higher toluene vapor permeability (more than 30,000 barrer) and toluene vapor/N2 permselectivity (690) than the supported ionic liquid membrane. The toluene vapor permeability and toluene vapor/N2 permselectivity were maintained under pressurized condition. It was confirmed that the toluene vapor permeation was limited by intramembrane diffusion of the dissolved toluene vapor.
TAYLOR & FRANCIS INC, 2018年11月22日, Separation Science and Technology (Philadelphia), 53 (17), 2840 - 2851, 英語[査読有り]
研究論文（学術雑誌）
© 2018 Elsevier B.V. The hydrothermal pretreatment of rice straw generates a liquid fraction that contains low concentrations of sugars, as well as fermentation inhibitors which are not favourable for efficient bioethanol production. For the development of a forward osmosis (FO) process to concentrate sugars and remove fermentation inhibitors, we fabricated polyamide-polysulfone (PA-PSf) membranes treated with NaClO solution. The NaClO treatment improved the water permeability (A value) and the permselectivity of fermentation inhibitors against sugars. Maximum separation of xylose from furfural and acetic acid was achieved when the treated membranes had A values of 5.5–7 L m−2 h−1 bar−1. Using an optimized membrane with A value of approximately 6 L m−2 h−1 bar−1, a liquid fraction from hydrothermally pretreated rice straw was concentrated in a one-step FO process to increase sugar concentrations and decrease fermentation inhibitor concentrations. The ethanol concentration and yield (ethanol/total sugar) by xylose-utilizing Saccharomyces cerevisiae reached 18.0 g/L and 0.40, respectively, which were much higher than those obtained with commercial FO membranes. These results clearly indicate the possibility of introducing a simple and low-cost FO process into bioethanol production from lignocellulosic biomass by incorporating NaClO treatment to FO membrane.
ELSEVIER SCIENCE BV, 2018年11月15日, Journal of Membrane Science, 566, 15 - 24, 英語[査読有り]
研究論文（学術雑誌）
Copyright © 2018 American Chemical Society. Tough inorganic/organic composite network gels consisting of a partially developed silica-particle network and a large amount of an ionic liquid, named micro-double-network (μ-DN) ion gel, are fabricated via two methods. One is a one-pot/one-step process conducted using a simultaneous network formation via sol-gel reaction of tetraethyl orthosilicate and free radical polymerization of N,N-dimethylacrylamide in an ionic liquid. When the network formation rates of the inorganic and organic networks are almost the same, the μ-DN structure is formed. The second method is simpler and involved the use of silica nanoparticles as the starting material. By controlling the dispersion state of the silica nanoparticles in an ionic liquid, the μ-DN structure is formed. In both μ-DN ion gels, silica nanoparticles partially aggregate and form network-like clusters. When a large deformation is induced in the μ-DN ion gels, the silica-particle clusters rupture and dissipate the loaded energy. The fracture stress and Young's modulus of the μ-DN ion gel increase as the size of the silica nanoparticles decreases. The increment in the mechanical strength would have been caused by the increase in the total van der Waals attraction forces and the total number of hydrogen bonding in the silica-particle networks.
AMER CHEMICAL SOC, 2018年09月11日, Langmuir, 34 (36), 10622 - 10633, 英語[査読有り]
研究論文（学術雑誌）
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. Two-dimensional (2D) nanosheets show promise for the development of water treatment membranes with extraordinary separation properties and the advantages of atomic thickness with micrometer-sized lateral dimensions. Stacked graphene oxide (GO)-based membranes can demonstrate unique molecular sieving properties with fast water permeation. However, improvements to the structural stability of the membranes in water to avoid problems such as swelling, disruption of the ordered GO layer and decreased rejection are crucial issues. This study reports the fabrication of stacked GO nanosheet membranes by simple vacuum filtration using triethanolamine (TEOA) as a crosslinker and mild reducing agent for improved structural stability and membrane performance. Results show that GO membranes modified with TEOA (GO-TEOA membranes) have a higher structural stability in water than unmodified GO membranes, resulting in improved salt rejection performance. Furthermore, GO-TEOA membranes show stable water permeance at applied pressures up to 9 bar with Na 2 SO 4 rejection of 85%, suggesting the potential benefits for water treatment applications.
MDPI, 2018年01月01日, Membranes, 8 (4), 130, 英語[査読有り]
研究論文（学術雑誌）
- SOC FIBER SCIENCE TECHNOLOGY, 2018年, Journal of Fiber Science and Technology, 74 (5), P186 - P192, 日本語
[査読有り]
研究論文（学術雑誌）
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Highly robust ion gels, termed double-network (DN) ion gels, composed of inorganic/organic interpenetrating networks and a large amount of ionic liquids (ILs), are fabricated. The DN ion gels with an 80 wt% IL content show extraordinarily high mechanical strength: more than 28 MPa of compressive fracture stress. In the DN ion gel preparation, a brittle inorganic network of physically bonded silica nanoparticles and a ductile organic network of polydimethylacrylamide (PDMAAm) are formed in the IL. Because of the different reaction mechanisms of the inorganic/organic networks, the DN ion gels can be formed by an easy and free-shapeable one-pot synthesis. They can be prepared in a controllable manner by manipulating the formation order of the inorganic and organic networks via not only multistep but also single-step processes. When silica particles form a network prior to the PDMAAm network formation, DN ion gels can be prepared. The brittle silica particle network in the DN ion gel, serving as sacrificial bonds, easily ruptures under loading to dissipate energy, while the ductile PDMAAm network maintains the shape of the material by the rubber elasticity. Given the reversible physical bonding between the silica particles, the DN ion gels exhibit a significant degree of self-recovery by annealing.
WILEY-V C H VERLAG GMBH, 2017年12月20日, Advanced Materials, 29 (47), 英語[査読有り]
研究論文（学術雑誌）
© 2017 American Chemical Society. A highly tough ionic liquid (IL)-based gel membrane with a specific inorganic/organic composite network is fabricated. Owing to the inorganic/organic composite network, the composite ion gel membrane with 80 wt % of IL shows excellent pressure resistance. The mechanical and gas permeation properties of the composite ion gel membrane can be controlled by changing the inorganic/organic network composition as well as the cross-linking degree of the organic polymer network. Although the mechanical and gas permeation properties show a trade-off relationship with the normal ion gel, the composite ion gel membrane, which has a relatively low composition of loosely cross-linked organic polymer network, exhibited not only high CO2 permeability but also high mechanical strength. The composite ion gel membrane with an optimized network composition achieved CO2 permeability of approximately 1850 barrer and a CO2/N2 selectivity of 20 for more than 300 h at 50 °C under humid conditions.
AMER CHEMICAL SOC, 2017年11月08日, Industrial and Engineering Chemistry Research, 56 (44), 12763 - 12772, 英語[査読有り]
研究論文（学術雑誌）
© 2017, Springer-Verlag Berlin Heidelberg. The juice from sweet sorghum cultivar SIL-05 (harvested at physiological maturity) was extracted, and the component sucrose and reducing sugars (such as glucose and fructose) were subjected to a membrane separation process to purify the sucrose for subsequent sugar refining and to obtain a feedstock for repeated bioethanol production. Nanofiltration (NF) of an ultrafiltration (UF) permeate using an NTR-7450 membrane (Nitto Denko Corporation, Osaka, Japan) concentrated the juice and produced a sucrose-rich fraction (143.2 g L−1 sucrose, 8.5 g L−1 glucose, and 4.5 g L−1 fructose). In addition, the above NF permeate was concentrated using an ESNA3 NF membrane to provide concentrated permeated sugars (227.9 g L−1) and capture various amino acids in the juice, enabling subsequent ethanol fermentation without the addition of an exogenous nitrogen source. Sequential batch fermentation using the ESNA3 membrane concentrate provided an ethanol titer and theoretical ethanol yield of 102.5–109.5 g L−1 and 84.4–89.6%, respectively, throughout the five-cycle batch fermentation by Saccharomyces cerevisiae BY4741. Our results demonstrate that a membrane process using UF and two types of NF membranes has the potential to allow sucrose purification and repeated bioethanol production.
SPRINGER, 2017年08月01日, Applied Microbiology and Biotechnology, 101 (15), 6007 - 6014, 英語, 国際誌[査読有り]
研究論文（学術雑誌）
© 2017 American Chemical Society. Fly ashes generated by the incineration disposal of radioactive pollutants contain a large amount of radionuclide, such as 137Cs. The radioactive cesium can be removed from these ashes by water washing. However, this method produces a large amount of radioactive contaminated wastewater. In this study, we investigated the effect of coexistent ions on 137Cs+ rejection of polyamide RO membrane in the decontamination of wastewater with low level radioactivity. The 137Cs+ rejection increased with the increase of monovalent cations concentration, while it decreased with the increase of bivalent cations concentration. However, the effect of bivalent cations was diminished by coexistent monovalent cations in the treatment of model wastewater that simulated the washing water of radioactive fly ashes. In addition, the polyamide RO membrane had a high resistance for long-term radiation of 137Cs. Thus, a polyamide RO membrane shows sufficient performance in the decontamination of wastewater with low level radioactivity.
AMER CHEMICAL SOC, 2017年06月14日, Industrial and Engineering Chemistry Research, 56 (23), 6864 - 6868, 英語[査読有り]
研究論文（学術雑誌）
© 2017 Taylor & Francis. Four kinds of amino acid ionic liquids (AAILs) with different cyclic amino acids were synthesized and used as CO2 carriers of facilitated transport membranes (FTMs) to investigate the effect of their chemical structure on the CO2 permeability. The cyclic AAILs showed low viscosities after CO2 absorption. The CO2 permeability of the FTM containing the cyclic AAIL with greater electron density showed better CO2 permeability owing to the higher CO2 absorbability and low viscosity. Because the viscosities of the investigated AAILs were relatively low, the dominating factor of the CO2 permeation resulted from the electron density of the amino group.
TAYLOR & FRANCIS INC, 2017年01月22日, Separation Science and Technology (Philadelphia), 52 (2), 209 - 220, 英語[査読有り]
研究論文（学術雑誌）
© 2017 Taylor & Francis. Low viscosity ionic liquids (ILs) composed of a cation with methoxy group and an aprotic heterocyclic anion (AHA) with highly nucleophilic amino group were synthesized and examined as a CO2 carrier of facilitated transport membranes. Due to the low viscosity of the AHA-type ILs after CO2 absorption, the AHA-type IL-based membrane showed high CO2 permeability (ca. 3900 barrer) with 200 of CO2/CH4 selectivity under dry condition at 323 K, which was much higher than that of amino acid ILs-based membrane (ca. 150 barrer with ca. 50 of CO2/CH4 selectivity).
TAYLOR & FRANCIS INC, 2017年01月22日, Separation Science and Technology (Philadelphia), 52 (2), 197 - 208, 英語[査読有り]
研究論文（学術雑誌）
© 2016 Elsevier B.V. This work focused on separating low concentrations of CO2(500–1000 ppm) from humid mixtures of CO2/N2using an amino acid ionic liquid (AAIL)-based ion gel membrane. The effects of relative humidity (RH), CO2partial pressure, and temperature on the CO2separation performance were investigated. At 303 K, RH 70%, and a CO2partial pressure of 0.1 kPa, the ion gel membrane showed high CO2permeability (around 52,000 barrer) and CO2/N2selectivity (8100), both of which were considerably higher than those observed using a conventional facilitated transport membrane (FTM). Changes in RH were found to slightly affect the CO2permeation properties of the ion gel membrane, while the CO2separation performance of the conventional FTM was strongly dependent on RH, decreasing sharply at RH <50%. Enhanced CO2permeability of the ion gel membrane was observed with decreasing CO2partial pressure, indicating a facilitated transport mechanism. Moreover, increasing the temperature at a constant RH was found to enhance CO2permeability, while CO2/N2selectivity remained constant. The outstanding and stable performance of the AAIL-based ion gel membrane demonstrated its potential for CO2separation from gas mixtures containing low concentrations of CO2across a wide RH range around room temperature.
ELSEVIER SCIENCE BV, 2017年, Journal of Membrane Science, 525, 290 - 297, 英語[査読有り]
研究論文（学術雑誌）
© 2017 Elsevier B.V. A poly(methacryloylamino propyl trimethylammonium chloride)/poly(dimethylacrylamide) (PMAPTAC/PDMAAm) double-network (DN) ion-gel membrane containing triethyl(2-methoxymethyl)phosphonium indazole ([P222(1O1)][Inda]) was fabricated via a casting method, displaying excellent mechanical strength and high CO2separation performance. Changes in the cross-linker loading of the PMAPTAC network were found to significantly impact the CO2separation performance of the ion-gel membrane. For instance, as the cross-linker loading was decreased from 4 to 0.5 mol.%, the CO2permeability and CO2/N2selectivity increased from 2254 to 7569 Barrer and from 130 to 210, respectively. The network structure and mechanical properties of the fabricated ion gels was also strongly dependent on the cross-linker loading of the PMAPTAC network, with excellent strength obtained at decreased loadings. The CO2transport properties of the DN ion-gel membranes were substantially improved by increasing the [P222(1O1)][Inda] content, which was mainly attributed to two cooperative factors: (1) carrier content increase, resulting in a large driving force for the diffusion of the CO2-complex and (2) decrease of the polymer network content, resulting in lower diffusion resistance. The proportional enhancement of CO2permeance with reducing ion-gel membrane thickness implied that diffusion is the rate-determining step of CO2permeation.
ELSEVIER SCIENCE BV, 2017年, Journal of Membrane Science, 530, 166 - 175, 英語[査読有り]
研究論文（学術雑誌）
© 2017 The Royal Society of Chemistry. Niobate nanosheets are assembled into thin membranes by a vacuum filtration. The nanosheet membranes have a dense and stable structure in water via chemical cross-linking and show higher permeance and salt rejection compared with graphene oxide membranes. A water pathway model based on the void structure is presented to explain the membrane performances.
ROYAL SOC CHEMISTRY, 2017年, Chemical Communications, 53 (56), 7929 - 7932, 英語[査読有り]
研究論文（学術雑誌）
© 2017 Elsevier B.V. Novel metal-containing ionic liquids (MCILs) with O2 absorbability were synthesized by mixing a N,N′-bis(salicylidene)ethylenediamine cobalt(II) (Co(salen)) complex and ionic liquid-based ligands. The couple of anions of the ionic liquid-based ligands, trihexyl(tetradecyl)phosphonium N-methylglycinate and trihexyl(tetradecyl)phosphonium bis(trifluoromethanesulfonyl)imide, coordinated to Co(salen) complex and gave negative charge to the neutral Co(salen). The negatively chaged Co(salen) complex with the ionic liquid-based ligands and the bulky trihexyl(tetradecyl)phosphonium cation allowed to form Co(salen) complex-based MCILs. The MCILs could chemically and selectively absorb a large amount of O2 and could function as an O2 carrier in supported MCIL membranes. The O2 permeability of the MCIL-based facilitated O2 transport membranes were higher than those of conventional fixed-O2 carrier membranes as well as polymer membranes. The fast O2 transportation could be realized from the high diffusivity of the O2 complex, which was formed via the reaction between MCIL and O2, owing to the liquidity of the MCILs.
ELSEVIER SCIENCE BV, 2017年, Journal of Membrane Science, 541, 393 - 402, 英語[査読有り]
研究論文（学術雑誌）
© 2017 Elsevier B.V. A novel ion gel membrane composed of a specific inorganic/organic composite network and a large amount of room temperature ionic liquid (RTIL) was fabricated. Owing to the rigid and fragile inorganic component, the ion gel had very high mechanical strength. Even though the RTIL content was 80 wt%, the ion gel withstood more than 10 MPa of compressive stress. Owing to the high mechanical strength and good RTIL-holding property of the ion gel, the ion gel membrane had excellent pressure resistance, which could be used under pressurized conditions of more than 600 kPa for the trans-membrane pressure difference. Furthermore, it was confirmed that the ion gel membrane containing more than 70 wt% of 1-ethyl-3-methylimidazolium tetracyanoborate ([C2mim][B(CN)4]) showed higher CO2 permeability than supported liquid membranes (SILMs). A comparison of the CO2 permeability of the composite ion gel membrane with 80 wt% of [C2mim][B(CN)4] (ca. 2600 barrer) with the theoretically predicted maximum CO2 permeability of an [C2mim][B(CN)4]-based membrane (2910 barrer) indicated that the composite network showed a deficit of only 10% of the maximum CO2 permeability. The [C2mim][B(CN)4]-based inorganic/organic composite membrane showed better CO2 separation performance than previously reported RTIL-based CO2 separation membranes and the obtained performances were beyond Robeson's upper bound.
ELSEVIER SCIENCE BV, 2017年, Journal of Membrane Science, 544, 252 - 260, 英語[査読有り]
研究論文（学術雑誌）
© 2016 American Chemical Society. Global warming is occurring because of emission of greenhouse gases due to human activities. Capture of CO2 from fossil-fuel industries and absorption of CO2 for natural gas sweetening are crucial industrial tasks to address the threat from greenhouse gases. Amino acid ionic liquids (AAILs) are used for reversible CO2 capture. In this study, the effect of CO2 chemisorption on tetramethylammonium glycinate ([N1111][GLY]), tetrabutylammonium glycinate ([N4444][GLY]), and 1,1,1-trimethylhydrazinium glycinate ([aN111][GLY]) were analyzed using density functional theory (DFT) and molecular dynamics (MD) studies. Density functional theory studies predicted different reaction pathways for CO2 absorption on [GLY]- and [aN111]+. The activation energy barriers for CO2 absorption on [GLY]- and [aN111]+ are 52.43 and 64.40 kJ/mol, respectively. The MD results were useful for mimicking the reaction mechanism for CO2 absorption on AAILs and its effect on physical properties such as the fractional free volume, diffusion coefficient, and hydrogen bonding. Dry and wet conditions were compared to identify factors contributing to CO2 solubility and selectivity at room temperature and elevated temperature. Hydrogen bonding between ion pairs was used to understand the increase in viscosity after CO2 absorption. The MD studies revealed that glycinate and related products after CO2 absorption contribute the most to the increase in viscosity. (Graph Presented).
AMER CHEMICAL SOC, 2016年12月15日, Journal of Physical Chemistry C, 120 (49), 27734 - 27745, 英語[査読有り]
研究論文（学術雑誌）
© 2016 Elsevier B.V. This paper reports the CO2 solubility, density, viscosity, and electrical conductivity for a kind of amino acid ionic liquid (AAIL), tetrabutylphosphonium L-prolinate ([P4444][Pro]). The physical properties of [P4444][Pro] showed the ordinary temperature dependency, i.e. the density and viscosity decreased and the electrical conductivity increased with a temperature rising. One mole of [P4444][Pro] absorbed a 0.970 mol of CO2 at atmospheric pressure of CO2 and 333.2 K, and desorbed only ∼17% of the absorbed CO2 at 393.2 K. NMR spectra revealed that a CO2 molecule formed a complex with [Pro]−, and [P4444]+ had a little effect on the CO2 absorption. The CO2 solubility increased steeply at lower pressures of CO2 < 0.1 MPa and very gradually in the higher pressure range from 0.1 to 6 MPa at 333.15 K. Other tetrabutylphosphonium AAILs with (S)-2-methylprolinate ([P4444][MePro]) and glycinate ([P4444][Gly]) showed the similar pressure dependencies. The contributions of physical and chemical absorptions to the total CO2 solubility were analyzed to discuss the effect of anion on the high-pressure CO2 solubility. [P4444][Pro] and [P4444][Gly] showed the higher physical and chemical CO2 absorptions (in molarity scale) in the present AAILs, respectively.
ELSEVIER, 2016年07月25日, Fluid Phase Equilibria, 420, 89 - 96, 英語[査読有り]
研究論文（学術雑誌）
© 2016 Published by Elsevier B.V. Amino acid ionic liquids (AAILs) composed of different sizes and numbers of amino groups, including tetrabutylammonium glycinate, tetramethylammonium glycinate, and 1,1,1-trimethylhydrazinium glycinate, were synthesized as CO2 carriers for facilitated transport membranes. The physical properties of the fabricated AAILs, such as density, viscosity, and N2 and CO2 absorption capacities, were measured, and the fractional free volume was calculated using molecular dynamics (MD) simulations. The results showed that the molar and fractional free volumes decreased with decreasing AAIL size, which caused increased CO2 absorption and decreased N2 absorption. In addition, the CO2 absorption increased with higher numbers of amino groups in the AAILs. The gas permeation properties of facilitated transport membranes containing the synthesized AAILs were investigated. The small AAILs with two amino groups showed better CO2 permeability and N2 barrier properties under humid conditions. We propose that ionic liquids optimized as CO2 carriers for facilitated transport membranes under humid conditions should have high amino-group density, which could be realized by decreasing the molecular size and introducing more amino groups in the molecule.
ELSEVIER SCIENCE BV, 2016年04月, Journal of Membrane Science, 503, 148 - 157, 英語[査読有り]
研究論文（学術雑誌）
© 2016 American Chemical Society. The viscosities of ionic liquids (ILs) that chemically react with CO2 and contain an aprotic heterocyclic anion (AHA) change very little after CO2 absorption, whereas the viscosities of other kinds of reactive ILs increase dramatically after CO2 absorption. This unique property has overcome a major problem with IL-based facilitated transport membranes (FTMs), namely, the low CO2 diffusivity caused by the extremely high liquid viscosity. This problem is especially severe at low temperature. In our preliminary experiments, the AHA IL tetrabutylphosphonium 2-cyanopyrrolide ([P4444][2-CNpyrr]) was studied in a FTM and it exhibited good CO2 permeability and CO2/N2 selectivity. [P4444][2-CNpyrr] does not react as strongly with CO2 as other reactive ILs, however, and its viscosity is still somewhat high. The CO2 separation performance of an IL-based FTM is expected to be better if a lower viscosity IL is used that binds CO2 more strongly. In this work, several AHA ILs were studied and their CO2 reactivity and viscosity were calculated using molecular simulation. The IL triethyl(methoxymethyl)phosphonium pyrrolide ([P222(1o1)][pyrr]) was predicted to have the highest reactivity and the lowest viscosity of the investigated AHA ILs, suggesting that its use in a FTM will lead to much higher CO2 permeability than previously reported IL-FTM systems such as [P4444][2-CNpyrr]).
AMER CHEMICAL SOC, 2016年03月16日, Industrial and Engineering Chemistry Research, 55 (10), 2821 - 2830, 英語[査読有り]
研究論文（学術雑誌）
© 2015 American Chemical Society. Tons of radioactive molecules were spread over the environment by the 2011 Fukushima Dai-ichi nuclear power station accident in Japan. Reverse osmosis (RO) is an important process for removing radionuclides from polluted water. The ion concentration of this radioactive polluted wastewater is extremely low compared with that of seawater or normal wastewater. The salt rejection of polyamide RO membranes is known to drastically decrease for feed solutions with extremely low salt concentrations. In this study, the effects of Cs+ concentration on the rejection of polyamide RO membrane were investigated for the efficient removal of 137Cs+ from the polluted water. To clarify the reason for the decrease in rejection, ζ-potential measurements, CO2 bubbling effects, and usage of CsHCO3 salt were investigated. It is shown that this rejection reduction was caused by HCO3- derived from dissolved CO2 in the feedwater. In addition, methods to avoid decreases in rejection are discussed.
AMER CHEMICAL SOC, 2015年09月09日, Industrial and Engineering Chemistry Research, 54 (35), 8782 - 8788, 英語[査読有り]
研究論文（学術雑誌）
© The Royal Society of Chemistry. A tough and thin double-network gel membrane containing amino acid ionic liquids as a CO2 carrier exhibited superior CO2 permeability and stability under pressurized conditions.
ROYAL SOC CHEMISTRY, 2015年07月20日, Chemical Communications, 51 (71), 13658 - 13661, 英語[査読有り]
研究論文（学術雑誌）
© 2015 Elsevier B.V. We investigated the effect of different membrane polymeric materials on the relationship between membrane pore size and development of membrane fouling in a membrane bioreactor (MBR). Membranes with different pore sizes were prepared using three different polymeric materials, cellulose acetate butyrate (CAB), polyvinyl butyral (PVB), and polyvinylidene fluoride (PVDF), and the development of membrane fouling in each membrane was evaluated by batch filtration tests using a mixed liquor suspension obtained from a laboratory-scale MBR. The results revealed that the optimal membrane pore size to mitigate membrane fouling differed depending on membrane polymeric material. For PVDF membranes, the degree of membrane fouling decreased as membrane pore size increased. In contrast, CAB membranes with smaller pores had less fouling propensity than those with larger ones. Such difference can be attributed to the difference in major membrane foulants in each membrane; in PVDF, they were small colloids or dissolved organics in which proteins are abundant, and in CAB, microbial flocs. The results obtained in this study strongly suggested that optimum operating conditions of MBRs differ depending on the characteristics of the used membrane.
ELSEVIER SCIENCE BV, 2015年03月01日, Applied Surface Science, 330, 351 - 357, 英語[査読有り]
研究論文（学術雑誌）
- 2015年03月, Membrane, 40 (2), 105 - 110, 英語Effect of ionic liquid additives on CO2 permeation and CO2/N2 selectivity of facilitated transport membranes
[査読有り]
研究論文（学術雑誌）
© 2014 American Chemical Society. Amino acid ionic liquids (AAILs) are gaining attention because of their potential in CO2 capture technology. Molecular dynamics simulations of AAILs tetramethylammonium glycinate ([N1111][Gly]), tetrabutylammonium glycinate ([N4444][Gly]), and 1,1,1-trimethylhydrazinium glycinate ([aN111][Gly]) and their corresponding mixtures with water were performed to investigate the effect of water concentration on the cation-anion interactions. The water content significantly influenced the free volume (FV) and fractional free volume (FFV) of the AAILs that varied with the hydrophobic and hydrophilic nature of the ion pairs. Under dry conditions, the FFV increased with increasing cation molecular sizes, indicative of proportional adsorption of any inert gases, such as N2, as consistent with experimental observations. Furthermore, the polarity of the cation played an important role in FFV and hence the diffusion of the AAILs. Density functional theory calculations suggested that hydrophilic [aN111][Gly] featured stronger interactions in the presence of water, whereas the hydrophobic IL showed weaker interactions. The carboxylate group of glycinate displayed stronger interactions with water than the cation. The computational study provided qualitative insight into the role of FV of the AAILs on CO2 and N2 absorption and suggests that [aN111][Gly] has CO2 adsorption capacity in the presence of water superior to that of other studied AAILs. (Figure Presented).
AMER CHEMICAL SOC, 2015年01月08日, Journal of Physical Chemistry B, 119 (1), 263 - 273, 英語[査読有り]
研究論文（学術雑誌）
- 2015年, Separations Division 2015 - Core Programming Area at the 2015 AIChE Annual Meeting, 2, 999 - 1000Molecular design of high CO2 reactivity and low viscosity ionic liquids for CO2 separative facilitated transport membrane
[査読有り]
研究論文（国際会議プロシーディングス）
- 2015年, Separations Division 2015 - Core Programming Area at the 2015 AIChE Annual Meeting, 2, 1127 - 1129Amino acid ionic liquids-based ion gel membranes with superior pressure resistance for CO2 capture application
[査読有り]
研究論文（国際会議プロシーディングス）
A series of amino acid ionic liquids (AAILs) composed of different cations of different sizes, including trihexyl(tetradecyl)phosphonium glycinate, tetrabutylphosphonium glycinate and triethyl(pentyl)phosphonium glycinate have been synthesized for the carrier of CO2 facilitated transport membrane. Their physical properties, including their viscosity, density, molar volume and N2 absorption amount were investigated. The amount of N2 absorption decreased as the size of the cation of the AAIL decreased. Facilitated transport membranes containing these AAILs were prepared, and their CO2 and N2 permeabilities were measured. The N2 permeabilities were systematically investigated both experimentally and theoretically with the aim of improving the selectivity of the CO2 permeation of the AAIL-based facilitated transport membrane. As expected, the CO2 permselectivity was improved using triethyl(pentyl)phosphonium glycinate, which contained the smallest cation of the AAILs investigated in this study. We have proposed a methodology for improving the CO2 selectivity of AAIL-based facilitated transport membranes based on reducing their N2 permeabilities. © 2013 Elsevier B.V.
ELSEVIER SCIENCE BV, 2014年03月15日, Journal of Membrane Science, 454, 155 - 162, 英語[査読有り]
研究論文（学術雑誌）
Novel ion-gel films containing an amino acid ionic liquid were fabricated by free radical polymerization of vinyl monomers. These high strength materials demonstrated superior CO2 permeability and separation performance. © 2014 The Partner Organisations.
ROYAL SOC CHEMISTRY, 2014年02月20日, Chemical Communications, 50 (23), 2996 - 2999, 英語[査読有り]
研究論文（学術雑誌）
Task-specific ionic liquid (IL)-based facilitated transport membranes were prepared with tetrabutylphosphonium amine-functionalized glycinate or 2-cyanopyrrolide ILs. CO2 permeabilities and viscosity and CO 2 absorbance of ILs were evaluated. Viscosities of glycinate- or methylglycinate-containing ILs drastically increased with CO2 absorption, probably from hydrogen bonding between their CO2 complexes. The temperature dependence of the CO2 permeability of the IL-based membranes was opposite to that of the viscosity of the corresponding ILs. The CO2 permeability at low temperature under dry conditions was improved by using tetrabutylphosphonium 2-cyanopyrrolide, which barely forms hydrogen bonds among its CO2 complexes. However, above 363 K, the tetrabutylphosphonium 2-cyanopyrrolide-based membrane had a lower CO2 permeability than the tetrabutylphosphonium glycinate-based membrane because tetrabutylphosphonium 2-cyanopyrrolide absorbed less CO2. The major factors controlling CO2 permeability of task-specific IL-based facilitated transport membranes appear to be the viscosity of the CO2 complex (which is the most important factor) and the amount of CO2 absorbed. © 2014 American Chemical Society.
AMER CHEMICAL SOC, 2014年02月12日, Industrial and Engineering Chemistry Research, 53 (6), 2422 - 2431, 英語[査読有り]
研究論文（学術雑誌）
- 日本膜学会, 2014年, 膜, 39 (2), 97 - 105, 英語
[査読有り]
研究論文（学術雑誌）
We investigated the solidification rate of polyvinylidene fluoride (PVDF) membranes during preparation by the nonsolvent-induced phase separation (NIPS) method. A new apparatus for quantitatively measuring membrane stiffness during phase separation was developed. In this apparatus, a polymer solution placed on a stage moves upward and the surface of the polymer solution contacts a sphere attached to the top of a needle. The displacement of a blade spring attached to the needle is then measured by a laser displacement sensor and converted to the surface repulsive force of the polymer solution. The effects of polymer concentration, composition of coagulant, molecular weight of polymer, and addition of hydrophilic additives were investigated. The solidification rate increases with increasing polymer concentration and molecular weight and decreases with the addition of solvent to the coagulation bath. The addition of hydrophilic additives causes rapid uptake of nonsolvent into the polymer solution and had the largest effect on solidification rate. Based on these results, two correlation groups between the solidification rate of the polymer solution and the mechanical strength of the ultimate membrane were identified. This is the first work to directly and quantitatively measure the solidification rate during nonsolvent-induced phase separation. © 2013 Elsevier B.V.
ELSEVIER SCIENCE BV, 2013年07月01日, Journal of Membrane Science, 438, 77 - 82, 英語[査読有り]
研究論文（学術雑誌）
This paper presents numerical procedures for a coupled scheme that combines immersed boundary and discrete element methods to simulate two-dimensional fluid and particle motion. We simulated the dead-end, constant-flux microfiltration of dispersed particles and investigated the effect of hydrodynamic interactions between the fluid and particles on the transmembrane pressure. The permeation of a single particle through a pore was first simulated to obtain the fundamental characteristics of transmembrane pressure behavior. The effects of the particle dispersion volume fraction and the pore size on the transmembrane pressure were then investigated. The results show that the transmembrane pressure increases and fluctuates even in the absence of membrane fouling when a particle penetrates the pore. Transmembrane pressure behavior is also significantly affected by the number of particles within the pore and the location of particles around the pore. © 2013 American Chemical Society.
AMER CHEMICAL SOC, 2013年03月27日, Industrial and Engineering Chemistry Research, 52 (12), 4650 - 4659, 英語[査読有り]
研究論文（学術雑誌）
Facilitated transport membranes are effective for gas separations but they have some disadvantages, such as leakage of the carrier solution under pressure and volatilization of solvents from the membrane. In this study, a novel gas separation membrane, a facilitated transport ion-gel membrane, with high permselectivity, high stability and high pressure tolerance was fabricated using a gelled ionic liquid with a selective-transport carrier for the target gas. Imidazolium type-ionic liquids, silver salts, and low molecular weight gelators were used to fabricate the ion-gel membrane. Gas absorption isotherms of the ion-gels were measured and studied using a theoretical model considering both physical and chemical absorption. It was found during absorption tests that some gelators deactivated the function of silver ions as a propylene carrier. In addition, gas permeation through ion-gel membranes was analyzed by applying an absorption model that accounted for the decrease in diffusivity caused by gelation of the ionic liquid. Theoretical analysis indicated that the fabricated ion-gel membranes transported propylene via a facilitated transport mechanism and thus facilitated transport ion-gel membranes were successfully fabricated. This is the first report describing the fabrication of facilitated transport ion-gel membranes. © 2012 Elsevier B.V.
ELSEVIER SCIENCE BV, 2013年03月05日, Journal of Membrane Science, 431, 121 - 130, 英語[査読有り]
研究論文（学術雑誌）
Membrane technology has been widely applied for environmental protection such as water treatment and CO2 reduction. Thus, there is increasing interest in the membrane field in Japan. The first membrane center (Center for Membrane and Film Technology, MaF Tech center) was established at Kobe University in 2007. This center is the only center focusing on membrane technology in Japan. In this paper, academic research activities and projects in Japan, and the cutting-edge research carried out at the MaF Tech center are briefly reviewed.
DIAGNOSIS PRESS LTD, 2013年02月, Biotechnology and Biotechnological Equipment, 27 (1), 3478 - 3484, 英語- 2013年, Separations Division 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future, 379 - 381Fundamental investigation on CO2 permeation mechanism of amino acid ionic liquid-based membranes
[査読有り]
研究論文（国際会議プロシーディングス）
To reduce membrane fouling of reverse osmosis (RO) membrane, we adopted layer-by-layer (LbL) assembly. LbL assembly has received attention as a means of preparing ultrathin layers of composite membranes. In addition, it can suppress membrane fouling due to its hydrophilicity. In this study, we deposited polyelectrolytes on a commercial RO membrane via LbL assembly and especially investigated the effect of layer number on membrane properties. The obtained membranes exhibited antifouling properties, such as high water permeability and high ion rejection, against various hydrophobic foulants. In addition, membrane hydrophilicity increased and surface roughness became smooth as layer number increased. We also found an optimum layer number that admitted highest water permeability. Quartz crystal microbalance with dissipation measurements revealed that the polyelectrolyte multilayer indeed suppresses foulant adsorption. Protein conformational change was low on the polyelectrolyte film surface, compared with that on the polyamide layer.© 2012 Elsevier B.V. All rights reserved.
ELSEVIER, 2012年10月08日, Separation and Purification Technology, 99, 1 - 7, 英語[査読有り]
研究論文（学術雑誌）
Amino acid ionic liquid-based facilitated transport membranes with tetrabutylphosphonium amino acid ionic liquids with glycine, alanine, proline and serine as the anion were prepared and their CO 2 permeation properties were evaluated from the physical and physicochemical properties of the amino acid ionic liquids. A tetrabutylphosphonium proline-based facilitated transport membrane showed an excellent CO 2 permeability of 14,000 Barrer, twice that of the others investigated, and a CO 2/N 2 selectivity of 100 at 373K under dry conditions. Thermogravimetric measurement showed that the tetrabutylphosphonium proline had a relatively high water-holding ability compared with the other amino acid ionic liquids investigated. The strong water holding ability of tetrabutylphosphonium proline realized the large absorption amount of CO 2 and established a large concentration gradient for the CO 2-complex across the membrane. The large concentration gradient provided a large driving force for CO 2-complex transport through the membrane and increased CO 2 permeability. © 2012 Elsevier B.V.
ELSEVIER SCIENCE BV, 2012年10月01日, Journal of Membrane Science, 415-416, 168 - 175, 英語[査読有り]
研究論文（学術雑誌）
Supported liquid membranes incorporating amino acid ionic liquids remarkably facilitate CO2 permeation under dry and low humid conditions. © 2012 Royal Society of Chemistry.
ROYAL SOC CHEMISTRY, 2012年06月14日, Chemical Communications, 48 (55), 6903 - 6905, 英語[査読有り]
研究論文（学術雑誌）
Microfluidic liquid-liquid extraction of the ethyl ester of docosahexaenoic acid (DHA-Et) with silver ions was investigated using slug flow and a water-in-oil (W/O) emulsion as specific flow patterns possessing large interfacial areas. To compare the extraction rates of both systems, slug flow and a W/O emulsion with similar specific interfacial areas were prepared. Extraction rates for the systems were the same at 298 K. However, at 268 K, slug flow had a faster extraction rate than the W/O emulsion. Theoretical calculation follows the results for both systems at 298 K and for the slug flow system at 268 K, suggesting that the emulsion stabilizer inhibits complex formation between DHA-Et and silver ions at the O/W interface. A reduction in extraction rate was observed in the slug flow system at 268 K when the emulsion stabilizer was used. Slug flow can be prepared without stabilizer, offering advantages over emulsions in microfluidic extraction. © 2011 American Chemical Society.
AMER CHEMICAL SOC, 2011年06月01日, Industrial and Engineering Chemistry Research, 50 (11), 6915 - 6924, 英語[査読有り]
研究論文（学術雑誌）
A new type of double emulsion droplets is fabricated by combining the methods of microfluidic emulsification and macroscopic phase separation within individual aqueous droplets (see picture). This monodisperse double emulsion is promising for bioencapsulation in aqueous capsules and the release/absorption of aqueous solutes. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
WILEY-V C H VERLAG GMBH, 2011年02月07日, ChemPhysChem, 12 (2), 263 - 266, 英語, 国際誌[査読有り]
研究論文（学術雑誌）
- 2011年, Water Technology for Developed and Developing Countries - Topical Conference at the 2011 AIChE Annual Meeting, 1, 97 - 99Investigation of protein adsorption behavior on polymer surfaces using atomic force microscopy and quartz crystal microbalance with dissipation
[査読有り]
研究論文（国際会議プロシーディングス）
The liquid-liquid extraction dynamics of an ethyl ester of docosahexaenoic acid (DHA-Et) with silver ion was investigated. The kinetic model was derived according to the following stepwise processes: Diffusion of DHA-Et across the organic film, complex-formation between DHA-Et and silver ion at the interface, and diffusion of extracted complex across the aqueous film. The kinetic parameters for the complex-formation reaction were determined from the investigation with the stirred transfer cell. With the proposed model and determined parameters, we predicted the uptakes of DHA-Et for the extraction system utilizing a slug flow prepared by a microchip. The calculated uptakes showed good correlation to the experimental data. The theoretical investigation suggested that the fast equilibration realized for the slug flow extraction system was due to the large specific interfacial area of the slug caused by the presence of wall film and the thin liquid film caused by the internal circulation. © 2009 American Institute of Chemical Engineers.
WILEY, 2010年08月, AIChE Journal, 56 (8), 2163 - 2172, 英語[査読有り]
研究論文（学術雑誌）
To prepare hollow microcapsules composed of native DNA, we developed a templating method using porous calcium carbonate microparticles as sacrificial templates. At first, DNA was adsorbed onto calcium carbonate microparticles, and then the adsorbed DNA was covalently cross-linked with each other by using ethylene glycol diglycidyl ether. After the dissolution of the templates, the resultant DNA capsules ranged from 1.5 to 8 μm in diameter, according to ionic strength. The low cross-linked and highly cross-linked DNA capsules exhibited enzymatic degradability and permeability that was dependent on the molecular weight of macromolecular solutes, respectively. This method has the potential to be used for the preparation of various single-component polymer capsules. © 2010 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, 2010年03月05日, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 356 (1-3), 126 - 133, 英語[査読有り]
研究論文（学術雑誌）
Five kinds of asymmetric poly(vinylidene fluoride) (PVDF) hollow fiber membranes with considerable different porosities at the inner and outer surfaces of the membrane were prepared via thermally induced phase separation (TIPS) method and applied for propylene absorption as gas-liquid membrane contactors. A commercial microporous poly(tetrafluoroethylene) (PTFE) hollow fiber membrane was also used as a highly hydrophobic membrane. Experiments on the absorption of pure propylene into silver nitrate solutions were performed and the effects of membrane structure, inner diameter, silver nitrate concentration and absorbent liquid flow rate were investigated at 298 K. PVDF membranes prepared by using nitrogen as bore fluid had lower inner surface porosity than the membranes prepared with solvent as bore fluid. Except the membrane with a skin layer at the outer surface, propylene absorption flux was inversely proportional to the inner diameter of the hollow fiber membrane, and propylene absorption rate per fiber was almost the same. Propylene flux increased with increasing the silver nitrate concentration and also with increasing the absorbent flow rate. A mathematical model for pure propylene absorption in a membrane contactor, which assumes that the membrane resistance is negligibly small and the total membrane area is effective for gas absorption, was proposed to simulate propylene absorption rates. Experimental results were satisfactorily simulated by the model except for the membrane having a skin layer. The model also suggested that propylene is absorbed in silver nitrate solutions accompanied by the instantaneous reversible reaction. This paper may be the first experimental and theoretical study on propylene absorption in membrane contactors. © 2009 Elsevier B.V. All rights reserved.
ELSEVIER, 2010年01月01日, Journal of Membrane Science, 346 (1), 86 - 97, 英語[査読有り]
研究論文（学術雑誌）
The synergistic extraction of samarium (Sm(III)) using two different main extractants and three organic phosphine oxides as synergist was examined. A synergistic effect was observed when dibutylmonothiophosphoric acid (DBTPA) was used with tri-n-butylphosphine oxide (TBPO) or dibutylphosphate (DBOBPO). The order of extractability was TBPO > DBOBPO. On the other hand, the extractability of samarium in the DBTPA + tri-n-butylphosphate (TBOPO) system was not significantly greater than the extractability of samarium in the DBTPA system. An antagonistic effect was observed when dibutylphosphoric acid (DBPA) was used as the main extractant and TBPO as the synergist. The extractability of samarium in the DBOBPO/TBOPO system was almost the same as that of samarium in the TBPO system. This difference in the extractabilities observed when using different synergists with the two main extractants probably resulted from the balance between the association abilities of the synergist and the main extractant. This could be explained by the basicity of the oxygen atom in the synergists and the coordination ability of the synergist with the samarium/main extractant complex. This was in turn due to the coordination number of the aforementioned complex. © 2009 The Society of Chemical Engineers,Japan.
SOC CHEMICAL ENG JAPAN, 2009年08月20日, Journal of Chemical Engineering of Japan, 42 (8), 563 - 569, 英語[査読有り]
研究論文（学術雑誌）
We developed a novel membrane reactor consisted of a CO shift catalyst and a membrane for selective CO2 separation. First, we successfully developed novel facilitated transport membranes with excellent performances exceeding our target values, i.e. CO2 permeance of 1x10-4 mol/(m2skPa) and CO2/H2 selectivity of 100 at 160 °C. The developed membrane maintained high performances for more than 400 hours. Second, we developed CO shift catalysts, which had high activity for the CO shift reaction at 160 °C. Among the catalysts developed in this study, precious metal-based catalysts had quite high activities. By combining the developed membrane and catalyst, a membrane reactor-type CO converter was fabricated. By using the CO converter, CO and CO2 concentrations in feed gas (14.8 and 7.4 %, respectively) were drastically reduced. Observed CO and CO2 concentrations at the feed-side exit of the CO converter were 5 ppm and 0.3 %, respectively. © The Electrochemical Society.
2009年, ECS Transactions, 17 (1), 589 - 598, 英語[査読有り]
研究論文（国際会議プロシーディングス）
- 2009年, Journal of Chemical Engineering of Japan, 42, 563-569Synergistic Extraction Mechanism of Samarium with Alkylphosphoric Acids as Main Extractant
[査読有り]
研究論文（学術雑誌）
A novel micromixer with simple construction and excellent mixing performance is developed. The micromixer is composed of two stainless steel tubes with different diameters: one is an outer tube and another is an inner tube which fits in the outer tube. In this micromixer, one reactant fluid flows in the mixing zone from the inner tube and the other flows from the outer tube. The excellent mixing performance is confirmed by comparing the results of a Villermaux/Dushman reaction with those for the other micromixers. The developed micromixer has a mixing cascade with multiple means and an asymmetric structure to achieve effective mixing. The excellent mixing performance of the developed micromixer suggests that serial addition of multiple phenomena for mixing will give us an efficient micromixing. © 2009 The Royal Society of Chemistry.
ROYAL SOC CHEMISTRY, 2009年, Lab on a Chip, 9 (12), 1809 - 1812, 英語[査読有り]
研究論文（学術雑誌）
We demonstrate a simple, unique method for preparing microcapsules with holes in their shells. Cross-linked polymelamine microcapsules are prepared by the phase-separation method. The holey shell of each microcapsule is synthesized on the surface of an oil-in-water (O/W) emulsion droplet where a water-soluble polymeric surfactant and an oil-soluble surfactant are competitively adsorbed. The water-soluble polymeric surfactant provides a reaction site for shell formation. The oil-soluble surfactant molecules seem to self-assemble while the shells are being formed, so holes appear where they assemble. The critical degree of surface coverage of an emulsion droplet by the water-soluble polymeric surfactant needed to form the holey shells is determined to be 0.90 from theoretical calculations in which competitive adsorption is considered. Theoretical consideration suggests that the size and quantity of the holes in the microcapsule shells are controlled by the composition of the surfactants adsorbed on the surface of an emulsion droplet. This theoretical consideration is confirmed by experiments. The prepared microcapsule with controllable macroholes in its shell has the potential to be used for controlled release applications and can be used to fabricate a microcapsule that encapsulates hydrophilic compounds. © 2008 American Chemical Society.
AMER CHEMICAL SOC, 2008年12月02日, Langmuir, 24 (23), 13287 - 13298, 英語[査読有り]
研究論文（学術雑誌）
The removal of Cd(II) and Cu(II) ions from aqueous solutions was studied by sorption onto microcapsules prepared by copolymerizing ethylene glycol dimethacrylate (EGDMA) and styrene (ST). The microcapsules were prepared by an in situ radical polymerization method by adding the extractant compound, 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, and the monomers to the continuous aqueous phase. The extractant was immobilized within the microcapsules (MCs) which presented a spherical shape with rough surface. High productions of MCs with an important retention of extractant were achieved. Microcapsules constituted by a copolymer of 65% EGDMA and 35% ST presented best capacity of sorption of both metals. These MCs presented sufficient degree of cross-linking and a suitable balance of hydrophilic-hydrophobic character. The experimental data from chemisorption of metals onto the microcapsules fitted well the applied pseudo-second-order kinetics model. The alkylphosphonic extractant presented a higher rate constant and a higher equilibrium sorption capacity for Cd(II) than for Cu(II) at the pH used in this study. © 2008 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, 2008年11月03日, Separation and Purification Technology, 63 (3), 517 - 523, 英語[査読有り]
研究論文（学術雑誌）
Monodisperse polymelamine microcapsules were prepared by phase separation method. Control of microcapsule diameter was investigated using the uniform-sized oil-in-water emulsion droplets as the capsule core. The monodisperse emulsion droplets were prepared using the Shirasu porous glass (SPG) membrane emulsification technique. The effects of the diameter of the oil droplet and concentration of sodium dodecyl sulfate (SDS), which is a typical emulsifier in SPG membrane emulsification, on microencapsulation were investigated. The microcapsules were aggregated when oil droplets with small size were microencapsulated at high SDS concentration. To reduce the SDS concentration, the creamed emulsion was used. The monodisperse polymelamine microcapsules were successfully prepared by using the creamed emulsion. The microcapsule diameter was almost similar to the diameter of the encapsulated oil droplet. The coefficient of variation values was about 10% for all microcapsules prepared in this study. Control of microcapsule diameter was achieved in the range of 5-60 μm. © Springer-Verlag 2008.
SPRINGER, 2008年06月, Colloid and Polymer Science, 286 (6-7), 787 - 793, 英語[査読有り]
研究論文（学術雑誌）
Extraction of lanthanum, samarium and erbium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) is studied. The extraction kinetic model used to predict uptake curves is based on the interfacial reaction model accompanied by intraparticle diffusion expressed by Fick's law. The uptakes are analyzed using the kinetic model with the separately determined complex formation rate constants and the intraparticle diffusion coefficient. The rate constants used in the calculation are determined from the analysis of the kinetics data for the liquid-liquid extraction system under a low-extractant concentration. The effects of pH and metal concentration on the metal uptakes into the microcapsule are successfully predicted with the determined rate constants. From the results, it is confirmed that the extraction mechanism of metal ions into the microcapsule is same to that for a liquid-liquid extraction system. © 2007 Elsevier B.V. All rights reserved.
2008年05月15日, Chemical Engineering Journal, 139 (1), 93 - 105, 英語[査読有り]
研究論文（学術雑誌）
The effect of heating rate on the liquefaction of a microcrystalline cellulose particle was investigated by using a batch type reactor with a temperature controller. Experiments were carried out over the temperature range of 443-553 K. The temperature profile of the heating was controlled to obtain a proportional relationship with time. Heating rates ranged from 0.0167 to 0.167 K/s. The resulting concentration profiles of cellulose, oligosaccharides, monosaccharides and pyrolysis products were analyzed using a theoretical model which considered temperature variation during the reaction. The calculated results exhibit a reasonable fit to the experimental data. The predicted cellulose concentration profiles over a wide range of heating rates indicate that liquefaction of cellulose is affected when the heating rate is below 1 K/s. It is concluded that consideration of the heating process is necessary in the modeling of liquefaction when using reactors which cannot achieve fast heating. © 2007 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE SA, 2008年04月, Chemical Engineering Journal, 137 (2), 328 - 338, 英語[査読有り]
研究論文（学術雑誌）
In this study, we investigate a process for liquefaction of cellulose with hot compressed water as a pre-treatment for a compact gasification process of cellulose. Experiments were carried out using a batch reactor with a temperature controller. The temperature profile for heating was controlled in a proportional relationship with time. Cellulose was drastically decomposed and liquefied when the maximum temperature was set at over ∼ 513 K. It decomposed to oligosaccharides, monosaccharides and pyrolysis products such as glyceraldehydes and 5-hydroxymethyl-2-furaldehyde. Theoretical treatment was investigated by considering the following stepwise processes: decompositions of I. cellulose to oligosaccharides, II. oligosaccharides to monosaccharides and pyrolysis products and III. monosaccharides to pyrolysis products. In these steps, step I is a heterogeneous reaction consists of: (a) Diffusion of water monomer to a cellulose surface and (b) Hydrolysis reaction of water monomer with a cellulose molecule at the surface. The temperature dependence of the rate constants was expressed by the Arrhenius relationship. The calculated result showed good correlation to the experimental data. The results suggest that it is possible to estimate the decomposition of cellulose by hot compressed water in a batch reactor that requires slow heating process. © 2007 Springer Science+Business Media, LLC.
SPRINGER, 2008年04月, Journal of Materials Science, 43 (7), 2179 - 2188, 英語[査読有り]
研究論文（国際会議プロシーディングス）
- 公益社団法人 化学工学会, 2008年, 化学工学会 研究発表講演要旨集, 2008, 613 - 613, 日本語
By utilizing a microreactor, extraction of ethyl ester of docosahexaenoic acid (DHA-Et) and eicosapentaenoic acid (EPA-Et) from an organic solution into an aqueous silver nitrate solution has been investigated. Slug flow preapared by using a T-shape microreactor was used to extract DHA-Et and EPA-Et. Utilizing slug flow created large specific interfacial area between aqueous and organic phases, and ultra fast extraction has been achieved. Extraction of both DHA-Et and EPA-Et took less than 20 s to reach equilibrium. In all of the experiments, the amount of DHA-Et or EPA-Et extracted was the same to that expected from the batch experiment. These facts indicate that the microreactor system can realize an ultra-fast examination system of extraction equilibrium. In addition, by maintaining the temperature quite low, a drastic improvement of extraction ratio is exhibited under a low silver nitrate concentration condition. That is, it can easily cut down silver nitrate by utilizing a microreactor. This is preferable for the practical operation. Copyright © 2007 The Society of Chemical Engineers, Japan.
SOC CHEMICAL ENG JAPAN, 2007年12月20日, Journal of Chemical Engineering of Japan, 40 (12), 1076 - 1084, 英語[査読有り]
研究論文（学術雑誌）
The fundamental investigation on extraction of Pd(II), Pt(IV), Cr(VI), Cu(II), Ni(II) and Zn(II) from an aqueous solution by using microcapsules containing a metal extractant was investigated. As extractants, 2-ethythexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) and tri-n-octylamine loaded with hydrochloric acid (TOA-HCI) were used. The extractants were successfully encapsulated in the microcapsules during the in situ microencapsulation process. The extractability of the metals into the microcapsules was estimated from the extraction isotherm of the metals. According to the Langmuir model, the saturation amount of metal extracted and the extraction equilibrium constant were determined. The microcapsules containing EHPNA and TOA-HCl were suitable for the extraction of base metals and precious metals, respectively. It is anticipated that a reactor in which two columns packed with each microcapsule containing EHPNA and TOA-HCl are connected in series would be useful for separation and recovery of precious metals from base metals. Copyright © 2007 The Society of Chemical Engineers, Japan.
SOC CHEMICAL ENG JAPAN, 2007年01月19日, Journal of Chemical Engineering of Japan, 40 (1), 31 - 35, 英語[査読有り]
研究論文（学術雑誌）
The extraction mechanism of metals into a microcapsule that contains an organophosphorus extractant is estimated from a theoretical calculation. It is assumed that the metal extraction progresses according to the following stepwise processes: (i) diffusion of metal ions to the surface of a microcapsule across the aqueous film,(ii) complex formation reaction of a metal ion and an extractant existing on the surface of a microcapsule, and (iii) intraparticle diffusion of the formed complex toward the center of a microcapsule. Considering the assumed mechanism, an extraction kinetic model is derived based on the interfacial reaction model accompanied by diffusion, as expressed by Fick's law. The uptakes of metal by extraction are analyzed with the proposed model. The calculated results are fit to the experimental uptakes, except for the results under high metal-loading conditions. From the comparison of determined complex-formation rate constants with those for the liquid-liquid extraction system, the validity of the proposed extraction mechanism is evaluated. © 2007 American Chemical Society.
AMER CHEMICAL SOC, 2007年01月03日, Industrial and Engineering Chemistry Research, 46 (1), 255 - 265, 英語[査読有り]
研究論文（学術雑誌）
Various water-soluble polymers were used to examine an alternative emulsifier for poly(ethylene-alt-maleic anhydride), used in the preparation of crosslinked polyurea microcapsules. Microcapsules were successfully prepared by using the water-soluble polymers with large molecular weight alternating copolymers, namely poly(olefin-maleic anhydride), poly(olefin-maleic acid), and poly(acrylic acid). On the other hand, no microcapsule resulted from olefin-maleic acid with small molecular weight alternating copolymers. From these results, the following guidelines were obtained for the selection of polymeric surfactants suitable for crosslinked polyurea microcapsule. A polymeric surfactant must have maleic acid or a carboxyl group in order to form a crosslinked polyurea microcapsule membrane. Furthermore, to form a stronger capsule membrane it is desirable to have a maleic anhydride group. It is also important for membrane formation that the polymeric surfactant has a suitable molecular weight.
TAYLOR & FRANCIS LTD, 2007年, Journal of Microencapsulation, 24 (4), 349 - 357, 英語[査読有り]
研究論文（学術雑誌）
- 公益社団法人 化学工学会, 2007年, 化学工学会 研究発表講演要旨集, 2007, 672 - 672, 日本語
- 公益社団法人 化学工学会, 2007年, 化学工学会 研究発表講演要旨集, 2007, 41 - 41, 日本語
- 公益社団法人 化学工学会, 2007年, 化学工学会 研究発表講演要旨集, 2007, 827 - 827, 日本語
The liquefaction mechanism of solid cellulose particles in hot compressed water is estimated experimentally and theoretically. Experiments are carried out using a batch reactor that equips a temperature controller. The heating profile is controlled to make a proportional relationship with time. Cellulose is drastically decomposed and liquefied when the maximum temperature is set over ∼513 K. It decomposed to oligosaccharides, monosaccharides, and pyrolysis products such as glyceraldehydes and 5-hydroxymethyl-2-furaldehyde. The concentration of oligosaccharides and monosaccharides shows maximal values for the maximum temperature set. The theoretical treatment of cellulose decomposition is investigated for stepwise processes of decomposition from (1) cellulose to oligosaccharides, (2) oligosaccharides to monosaccharides and pyrolysis products, and (3) monosaccharides to pyrolysis products. The theoretical equation derived for the proposed mechanism inserts the temperature variation with Arrhenius relationship. The concentration profiles on maximum temperature are calculated numerically. The calculated results show a reasonable correlation to the experimental data. © 2006 American Chemical Society.
AMER CHEMICAL SOC, 2006年07月05日, Industrial and Engineering Chemistry Research, 45 (14), 4944 - 4953, 英語[査読有り]
研究論文（学術雑誌）
The extraction mechanism of metal ions in wide concentration ranges of extractant is investigated. Not only in the low extractant concentration range but also in the high concentration range, the extraction rate is affected by aqueous conditions such as pH and metal concentration. Furthermore, the rate is increased with an increase in the extractant concentration below about 2500 mol/m3 and adversely decreased over ∼2500 mol/m3. It is suggested that, in a high extractant concentration range, diffusion resistance of the extracted complex through liquid organic laminar film strongly affects the overall extraction rate. The extraction mechanism is evaluated using a modified interfacial reaction model considering an increase in the viscosity of the organic phase with an increase in extractant concentration by applying the Wilke - Chang equation and Lima's equation. As the result, both extraction mechanisms in the ranges of low and high extractant concentrations are the same in each other, which suggests that the proposed model is reasonable. © 2006 American Chemical Society.
2006年02月01日, Industrial and Engineering Chemistry Research, 45 (3), 1105 - 1112, 英語[査読有り]
研究論文（学術雑誌）
- 2006年, CHISA 2006 - 17th International Congress of Chemical and Process EngineeringKinetic investigation of metal sorption into a microcapsule
[査読有り]
研究論文（国際会議プロシーディングス）
It is studied the uptake of Zn(II) and Cu(II) from acid aqueous solutions using microcapsules containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester, a non-specific extractant, as an alternative method for metals separation in place of current techniques as ion-exchange solid resins or solvent extraction. The microcapsules employed in this study were prepared by an in situ radical polimerization method. The amount of extractant held within each microcapsule was determined by potentiometric titration. Many experimental tests were carried out to measure the hydrometallurgical capacity of the microcapsules to remove these metallic ions from the aqueous solutions. © 2006 Sociedad Chilena de Química.
2005年12月, Journal of the Chilean Chemical Society, 50 (4), 711 - 714[査読有り]
研究論文（学術雑誌）
The sorption behavior of gallium and indium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester is investigated. The effects of pH and metal concentration on sorption rate are investigated to estimate the sorption mechanism. The initial sorption rates are compared to the corresponding initial extraction rates measured for the solvent extraction system. The initial sorption rate varied with pH and metal concentration, following the solvent extraction system. Furthermore, the rate-determining step was evaluated from the activation energy. The activation energy of sorption is obtained as 48.9 kJ/mol for gallium and 30.7 kJ/mol for indium. These values indicate that both chemical reaction and diffusion processes affect the rate-determining step. These results suggest that metal sorption proceeds following sequential processes: diffusion of metal ions through aqueous film, complex formation on the surface of microcapsule, and diffusion of metal complexes through the pores. That is, the global sorption rates were controlled by both complex-formation reaction and intraparticle diffusion. © 2005 American Chemical Society.
2005年03月30日, Industrial and Engineering Chemistry Research, 44 (7), 2266 - 2272[査読有り]
研究論文（学術雑誌）
This research was conducted to clarify the membrane formation mechanism of cross-linked polyurea microcapsules by phase separation method, especially the role of polymeric surfactant, such as poly(ethylene-alt-maleic anhydride) (poly(E-MA)) at the interface of O/W emulsion. It was found that poly(E-MA) was necessary for the formation of cross-linked polyurea membrane. The addition of sodium dodecyl sulphate (SDS) prohibited the membrane formation reaction at the interface, even in the case of poly(E-MA) concentration enough for polymeric microcapsule formation. From the results in this study, poly(E-MA) was found to be adsorbed on the O/W emulsion and provide the reaction site for the membrane formation of polymeric microcapsules. © 2004 Taylor & Francis Ltd.
TAYLOR & FRANCIS LTD, 2004年05月, Journal of Microencapsulation, 21 (3), 241 - 249, 英語[査読有り]
研究論文（学術雑誌）
The characteristics of adsorption of gallium and indium were measured by using a column, in which microcapsules containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester were packed. Firstly, adsorption isotherms for gallium and indium in the microcapsules were measured and analyzed according to Freundlich adsorption isotherm model, from which the saturation capacities were obtained and the operation lines for both metals were determined. Then, breakthrough curves for 5 mol/m3 gallium and/or indium solution were measured using the column packed with the microcapsules. The effects of flow rate and pH of the feed solution on the characteristics of metal adsorption were investigated. When the flow rate decreased, the adsorption capacity of gallium became smaller, but that of indium was not changed at all. By selecting the pH of the feed solution, the separation of gallium from indium was achieved. However, the separation of indium from gallium was not completely achieved. In stripping operation, it was possible to separate both metals adsorbed in the column by selecting the hydrogen-ion concentration of the stripping solution. The breakthrough curves in the 5th run did not differ so much from that in the 1st run, whereby the loss of the extractant in the microcapsules was only about 0.01%. The theoretical equation of the breakthrough curve was established. The experimental data for each system were correlated to the calculated lines based on the predictive equation. © 2002 Elsevier Science B.V. All rights reserved.
2002年11月01日, Separation and Purification Technology, 29 (2), 121 - 130, 英語[査読有り]
研究論文（学術雑誌）
In this study, we investigate the mutual separation of lanthanoids by using a column packed with the microcapsules containing acidic organophosphorus compound as an extractant. It is found that adsorption and elution of lanthanoids are briefly achieved by selecting pHs of the feed aqueous solution. The mutual separation of lanthanoids is investigated using the adsorption column connected to the development column containing microcapsules. With selecting pHs of the eluent, each metal is separated mutually in more than 95% of purity. In addition, a numerical solution of breakthrough curve for an adsorption of rare-earth metal ions is derived.
2002年09月10日, Desalination, 144 (1-3), 249 - 254, 英語[査読有り]
研究論文（学術雑誌）
The separation of gallium and indium was investigated using a column in which microcapsules containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester were packed. First, adsorption isotherms were measured and analyzed according to the Freundlich adsorption isotherm model, from which the saturation capacities and the operation lines were determined. Then, breakthrough curves were measured at several flow rates and pH's of the feed solution. When the flow rate decreased, the adsorption capacity of gallium also decreased, but that of indium did not change. By selecting the appropriate pH, the separation of gallium from indium was achieved. Specifically, it was possible to separate the two metals by selecting the hydrogen-ion concentration in the stripping operation. Even after the fifth cycle of adsorption and stripping, the loss of the extractant in the microcapsules was only about 0.01%. The theoretical equation for the breakthrough curve was established. The experimental data were correlated to the lines calculated using the predictive equation.
American Chemical Society, 2002年07月24日, Industrial and Engineering Chemistry Research, 41 (15), 3669 - 3675, 英語[査読有り]
研究論文（学術雑誌）
For the purpose of developing new technologies of extraction and separation of metals, we have investigated the way of using microcapsules. In this study, the microcapsules containing several organophosphorus compounds as extractants (HR) were prepared by in situ polymerization technique and their characteristics were investigated. The extractant held within microcapsules was not leaked out at pH below 4, hence the microcapsules are useful for the extraction of cationic metal ions. In this study, we investigate the extraction behavior of gallium and indium as objective metal sources. The extraction equilibria were clarified by a slope-analysis method. Those for gallium and indium using the microcapsules containing di(2-ethylhexyl) phosphoric acid (D2EHPA) and 2-ethylhexylphosphonic acid mono-2- ethylhexyl ester (EHPNA) were determined as follows: Ga3+ +2(HR)2 = GaR3 HR + 3H+ In3+ +5/2 (HR)2 = InR3 2HR + 3H+ The extraction equilibrium for the microcapsule containing diisostearyl-phosphoric acid (DISPA) was determined as follows: (Ga,In)HSO42+ +5/2(HR)2 = (Ga,In)HSO4R2 .3HR + 2H+ The extraction equilibrium constants and separation factors were also determined for each system. The maximum adsorption capacities of the metals in the microcapsule containing EHPNA were determined with the Langmuir isotherm model and determined as 4.49 × 10-4 and 3.22 x 10-4 mol/g-MC for gallium and indium, respectively.
2002年02月, Journal of Chemical Engineering of Japan, 35 (2), 178 - 185, 英語[査読有り]
研究論文（学術雑誌）
- Numerical solution of the breakthrough curve for adsorption of rare-earth metals in a column packed with EHPNA-microcapsules
A numerical solution of the breakthrough curve for the adsorption of rare-earth metal ions in a column packed with EHPNA-microcapsules was derived. The solution is obtained from considering the irreversible equilibrium expressed by the Freundlich adsorption isotherm model, representing both fluid and solid mass-transfer resistance as a linearized rate expression and using a differential mass balance for a point in the column while neglecting axial dispersion. The numerical solution so obtained is simple and can easily predict the shape of the breakthrough curves. Experimental data for rare-earth metal ions are presented and discussed using the theory.
2002年, Solvent Extraction Research and Development, 9, 51 - 57[査読有り]
研究論文（学術雑誌）
In this study, we measured the extraction equilibria of lanthanoids with microcapsules containing acidic organophosphorus compound as an extractant and discuss their mutual separation by using a column packed with the microcapsules. The extraction equilibria of lanthanoids into the microcapsules containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) were elucidated and the extraction equilibrium constants were calculated by slope-analysis method. It was suggested that the lanthanoid ions are extracted in the microcapsules in a high loading state. Furthermore, the adsorption behavior of lanthanoids into the column packed with the microcapsules containing EHPNA was observed. It was found that adsorption and elution of lanthanoids are briefly achieved by selecting pH of the feed aqueous solution. However, it was impossible to separate them only in adsorption or elution operation. So, the mutual separation of lanthanoids was investigated using the adsorption column connected to the development column containing microcapsules. By selecting pH of the eluent, each metal was separated mutually in more than 95% of purity. The metal ions in the eluent from the development column could be concentrated by treating it with a column packed with the microcapsules containing di(2-ethylhexyl)phosphoric acid (D2EHPA). Considering these information, it will be possible to design a continuous extracting, separating and concentrating reactor of lanthanoids using a column packed with the microcapsules. Copyright © 2002 The Society of Chemical Engineers.
Society of Chemical Engineers, Japan, 2002年, Journal of Chemical Engineering of Japan, 35 (6), 574 - 581, 英語[査読有り]
研究論文（学術雑誌）
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講演・口頭発表等
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議有機キレート配位子を鋳型とする多孔性TiO2-ZrO2ナノろ過膜の細孔径評価と分画特性
口頭発表（一般）
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議分子シミュレーションによるイオン液体中の二酸化炭素拡散性評価
ポスター発表
- 化学工学会第84年会, 2019年03月, 日本語, 化学工学会, 東京, 国内会議部分発達シリカ粒子ネットワークを有するイオン液体含有高強度無機／有機ハイブリッドネットワークゲルの開発
口頭発表（一般）
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議高分子膜を利用した正浸透法における膜ファウリング特性
ポスター発表
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議吸引ろ過法を利用したCuBDC MOFナノシート積層膜の作製
ポスター発表
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議圧力支援法を用いた多孔質アルミナ管上への酸化グラフェン積層膜の作製
ポスター発表
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議ポリケトン支持膜の構造制御による耐圧性と正浸透膜における透水性への影響
ポスター発表
- 第21回化学工学会学生発表会(京都大会), 2019年03月, 日本語, 公益社団法人化学工学会, 京都, 国内会議チタニア・ジルコニア複合ナノろ過膜の作製と有機溶剤透過性評価
口頭発表（一般）
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議アルカノールアミンで架橋されたGO積層膜の透水性能と塩阻止性
ポスター発表
- 化学工学会第84.年会, 2019年03月, 日本語, 化学工学会, 芝浦工業大学, 国内会議TiO2-ZrO2-Gallateナノ複合多孔膜の細孔構造と気体透過特性評価
ポスター発表
- 第21回化学工学会学生発表会(京都大会)+H31:K31, 2019年03月, 日本語, 公益社団法人化学工学会, 京都, 国内会議MoS2ナノシートを用いた積層膜の作製と製膜法による積層構造の変化
口頭発表（一般）
- 第21回化学工学会学生発表会(京都大会), 2019年03月, 日本語, 公益社団法人化学工学会, 京都, 国内会議CO2分離機能ゲル層を有する中空糸膜のCO2選択透過性支配因子の解明
口頭発表（一般）
- 化学工学会 中国四国支部;関西支部合同徳島大会, 2018年12月, 日本語, 徳島大学, 国内会議ポリケトン支持膜のアミン修飾による膜構造や耐圧性の影響
口頭発表（一般）
- 第２８回日本MRS年次大会, 2018年12月, 日本語, 北九州国際会議場・西日本総合展示場, 国内会議ガス透過法およびミクロ孔充填相透過法を用いた多孔性セラミック膜の細孔構造評価Characterization of Porous Structures of Microporous Ceramic Membranes by Gas Permeation and Micropore Filling Phase Permeation Method
ポスター発表
- 第２８回日本MRS年次大会, 2018年12月, 日本語, 北九州国際会議場・西日本総合展示場, 国内会議TiO2-ZrO2-有機キレート配位子複合ガス分離膜の開発Development of TiO2-ZrO2-organic chelate ligand composite membranes for gas separation
口頭発表（一般）
- 第２８回日本MRS年次大会, 2018年12月, 日本語, 北九州国際会議場・西日本総合展示場, 国内会議Fabrication of cross-linked graphene oxide membranes by using alkanolamine
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 日本膜学会, 神戸市, 国内会議有機キレート配位子を鋳型に用いたTiO2-ZrO2複合NF膜の分離特性
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸市, 国内会議分子シミュレーションによるポリイミド膜構造の規則性が気体透過特性に及ぼす影響評価
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議部分発達シリカ粒子ネットワークを有するイオン液体含有高強度ゲルフィルムのネットワーク構造と力学的特性
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議中空シリカ担持Pt触媒を用いたシリカ系分離膜の作製とメチルシクロヘキサン脱水素反応の評価
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議正浸透法における駆動溶液に用いる最適な温度応答性イオン液体の創製と評価
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議浸透圧補助型低圧逆浸透法における塩水濃縮に及ぼす各種操作条件の影響
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議金属錯体系イオン液体キャリア含有促進輸送膜の酸素透過機構に関する基礎的検討
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議架橋性高分子を用いた無機/有機ダブルネットワークイオンゲルの創製
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 日本膜学会, 神戸市, 国内会議ニオブ酸化物ナノシート積層型分離膜の作製―ナノシート調製法が膜性能に及ぼす影響―
口頭発表（一般）
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議ニオブ酸化物/酸化グラフェン複合ナノシート膜における積層構造と透水性の関係
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議クロスフローろ過において粒子の変形性がケーク形成に及ぼす影響
ポスター発表
- 膜シンポジウム2018, 2018年11月, 日本語, 神戸, 国内会議アルカノールアミンを利用した架橋型酸化グラフェン積層膜の作製
ポスター発表
- 6th International Workshop on Process Intensification （IWPI 2018）, 2018年11月, 英語, National Taiwan University, 国際会議Fabrication of Silica-based Catalytic Membrane including Pt CatalystsEncapsulated in Hollow Silica Nanotubes
口頭発表（一般）
- 6th International Workshop on Process Intensification (IWPI 2018), 2018年11月, 英語, National Taiwan University, 国際会議Enhanced Membrane Filtration Performance of Stacked Niobate Nanosheet Membranes by The Addition of Graphene Oxide
[招待有り]
口頭発表（招待・特別）
- 第17 回無機膜研究会, 2018年10月, 日本語, 化学工学会分離プロセス部会膜工学分科会, 長野県駒ヶ根市, 国内会議有機溶剤分離のためのTiO2-ZrO2複合膜の細孔径制御と性能評価
ポスター発表
- 第17 回無機膜研究会, 2018年10月, 日本語, 化学工学会分離プロセス部会膜工学分科会, 長野県駒ヶ根市, 国内会議化学的に剥離されたMoS2ナノシートによる積層膜の作製
ポスター発表
- 第17 回無機膜研究会, 2018年10月, 日本語, 化学工学会分離プロセス部会膜工学分科会, 長野県駒ヶ根市, 国内会議「酸化チタンナノワイヤーおよびグラフェを利用した触媒膜の設計
ポスター発表
- 第17 回無機膜研究会, 2018年10月, 日本語, 化学工学会分離プロセス部会膜工学分科会, 長野県駒ヶ根市, 国内会議TiO2-ZrO2-有機キレート複合材料の特性評価と気体分離膜への応用
ポスター発表
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 化学工学会, 鹿児島市, 国内会議膜透過分子間相互作用を考慮した多孔性セラミック膜の細孔構造評価
口頭発表（一般）
- 第69回コロイドおよび界面化学討論会, 2018年09月, 日本語, つくば市, 国内会議部分的に発達したシリカ粒子ネットワークを有するイオン液体含有高強度無機／有機ハイブリッドネットワークゲル
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 化学工学会, 鹿児島市, 国内会議中空糸膜モジュールを用いた浸透圧補助低圧逆浸透法による塩水濃縮と透水挙動解析
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 英語, 鹿児島（鹿児島大学）, 国内会議正浸透膜プロセスに用いる温度相転移物質の会合挙動が浸透圧に及ぼす影響
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 鹿児島（鹿児島大学）, 国内会議金属錯体系イオン液体含浸膜のガス透過機構に関する基礎的検討
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 鹿児島（鹿児島大学）, 国内会議架橋性高分子を用いた高強度イオンゲルの創製
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 化学工学会, 鹿児島市, 国内会議ニオブ酸化物ナノシート積層膜のナノろ過特性に及ぼす酸化グラフェン複合化の効果
口頭発表（一般）
- 第67回高分子討論会, 2018年09月, 日本語, 札幌市, 国内会議シリカ粒子を分散させたイオン液体含有高分子ゲルの強靭性発現機構に関する基礎的検討
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 鹿児島（鹿児島大学）, 国内会議クロスフローろ過におけるケーク形成に及ぼす粒子の変形性の影響
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年09月, 日本語, 化学工学会, 鹿児島市, 国内会議Pt内包シリカナノチューブ触媒を用いたメチルシクロヘキサン脱水素反応および触媒膜の作製
口頭発表（一般）
- 第64回高分子研究発表会, 2018年07月, 日本語, 神戸, 国内会議シリカ粒子ネットワーククラスターを犠牲的結合として用いたイオン液体含有高強度無機／有機ハイブリッドネットワークゲル
口頭発表（一般）
- The 11th conference of the Aseanian Membrane Society, 2018年07月, 英語, Australia, 国際会議The effect of cation size of metal containing ionic liquids on oxygen permeability
口頭発表（一般）
- The 11th Conference of Aseanian Membrane Society (AMS11), 2018年07月, 英語, Aseanian Membrane Society, Brisbane (Australia), 国際会議Fabrication of 2D Niobium Oxide/Graphene Oxide Nanosheet Composite Membranes for Nanofiltration
口頭発表（一般）
- The 11th conference of the Aseanian Membrane Society, 2018年07月, 英語, Australia, 国際会議Double-network ion gel membrane with tunable inorganic/organic network for CO2 separation
口頭発表（一般）
- The 11th conference of the Aseanian Membrane Society, 2018年07月, 英語, Australia, 国際会議Development of tough inorganic/organic double network ion gels for CO2 separation membranes
ポスター発表
- 第７回JACI/GSCシンポジウム, 2018年06月, 日本語, 新化学技術推進協会, 神戸市, 国内会議酸化グラフェンの複合による金属酸化物ナノシート積層膜の膜性能向上
ポスター発表
- 第７回JACI/GSCシンポジウム, 2018年06月, 日本語, 新化学技術推進協会, 神戸市, 国内会議気体透過法による多孔性無機膜のサブナノ細孔径分布評価と気体透過選択性の予測
ポスター発表
- 15th International Conference on Inorganic Membranes (ICIM-15)15th International Conference on Inorganic Membranes, 2018年06月, 英語, The Westin Bellevue Dresden, Germany, 国際会議Simulation and modeling of water permeation in TiO2 nanoporous membranes using non-equilibrium molecular dynamics
口頭発表（一般）
- The 82nd Prague Meeting on Macromolecules - Polymer Networks and Gels 2018 and 24th meeting of the international Polymer Networks Group, 2018年06月, 英語, Czech Republic, 国際会議IONIC LIQUID-BASED GELS WITH SPECIFIC INORGANIC/ORGANIC DOUBLE NETWORK
口頭発表（一般）
- The 82nd Prague Meeting on Macromolecules - Polymer Networks and Gels 2018 and 24th meeting of the international Polymer Networks Group, 2018年06月, 英語, Czech Republic, 国際会議HIGH-STRENGTH GELS COMPOSED OF AN IONIC LIQUID AND INORGANIC/ORGANIC HYBRID NETWORKS FORMED VIA ONE-POT/ONE-STEP PROCESS
口頭発表（一般）
- 15th International Conference on Inorganic Membranes (ICIM2018), 2018年06月, 英語, 国際会議2D niobium oxide nanosheet membranes for water treatment: effects of nanosheet preparation methods on their membrane performances
口頭発表（一般）
- 化学工学会第50回秋季大会, 2018年05月, 日本語, 化学工学会, 鹿児島市, 国内会議有機キレート配位子を鋳型に用いた高透水性TiO2-ZrO2複合NF膜の分離特性
口頭発表（一般）
- 日本膜学会第40年会, 2018年05月, 日本語, 東京, 国内会議気体透過法による多孔性無機膜のin-situサブナノ細孔径分布評価法の開発
ポスター発表
- 日本膜学会第40年会, 2018年05月, 日本語, 東京, 国内会議ニオブ酸化物ナノシート積層型分離膜の酸化グラフェン導入によるナノろ過特性の向上
ポスター発表
- 第67回高分子学会年次大会, 2018年05月, 日本語, 名古屋, 国内会議シリカ粒子ナノクラスターを犠牲的結合とするイオン液体含有高強度無機／有機ハイブリッドネットワークゲルの開発
口頭発表（一般）
- 第７回JACI/GSCシンポジウム, 2018年05月, 日本語, 神戸, 国内会議アミノ酸イオン液体含有CO2分離ゲル膜のワンステップ調製法の開発
ポスター発表
- 分離技術会年会2018, 2018年05月, 日本語, 分離技術会, 千葉県習志野市, 国内会議Pt内包シリカナノチューブを利用した触媒膜の作製
ポスター発表
- Asian Student Symposium on Membrane Engineering (AGSM6), 2018年04月, 英語, Taiwan(Chungli), 国際会議Tough Inorganic/Organic Double Network Ion Gels for CO2 Separation Membranes
口頭発表（一般）
- 第20回化学工学会学生発表会, 2018年03月, 日本語, 広島, 国内会議⾦属酸化物ナノシート/酸化グラフェン積層膜の作製と膜性能に及ぼす複合⽐の影響
口頭発表（一般）
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議分子動力学法を用いたイオン液体水溶液の特性評価と正浸透膜透過シミュレーション
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議分子シミュレーションによる新規ポリイミド膜の構造設計と気体透過特性評価
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議剥離法により調製した金属酸化物ナノシートを利用した積層薄膜の作製と水処理膜への応用
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議中空糸膜を利用した正浸透法および逆浸透法における膜ファウリング特性の比較検討
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議正浸透膜の選択透過性の向上と糖液濃縮およびバイオエタノール生産に及ぼす効果
ポスター発表
- 化学工学会第83年会, 2018年03月, 日本語, 化学工学会, 吹田市, 国内会議正浸透膜の選択透過性の向上と糖液濃縮およびバイオエタノール生産に及ぼす効果
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議金属錯体系イオン液体の酸素吸収速度におけるカチオンサイズの影響
ポスター発表
- 第20回化学工学会学生発表会, 2018年03月, 日本語, 広島, 国内会議気体透過法による多孔膜のサブナノ細孔径分布評価
口頭発表（一般）
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議ポリケトン膜のアミン修飾による耐圧性向上の要因と正浸透膜への応用
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議キレート配位子を鋳型とするナノ多孔性TiO2-ZrO2複合膜の作製と性能評価
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議アミノ酸イオン液体含有ゲル薄膜の創製とそのCO2透過機構の解明
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議TiO2-ZrO2-有機キレート配位子複合ガス分離膜の作製とCO2透過特性の評価
ポスター発表
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議Pt内包中空シリカナノチューブ触媒の調製と脱水素反応用触媒膜への適用
ポスター発表
- 第20回化学工学会学生発表会, 2018年03月, 日本語, 広島, 国内会議CO2分離膜への適⽤を⽬指したイオンゲルの調製に関する検討
口頭発表（一般）
- 化学工学会第83回年会, 2018年03月, 日本語, 大阪, 国内会議CO2分離膜への応用を目指したイオン液体含有無機／有機double networkゲルの開発
口頭発表（一般）
- 化学工学会金沢大会2017, 2017年12月, 日本語, 石川, 国内会議無機/有機ダブルネットワークゲルのネットワーク形成に関する基礎的検討
口頭発表（一般）
- 化学工学会金沢大会2017, 2017年12月, 日本語, 石川, 国内会議2D金属酸化物ナノシート材料を利用した積層膜の作製と膜分離性能
口頭発表（一般）
- 第8回イオン液体討論会, 2017年11月, 日本語, 東京, 国内会議無機／有機double network構造を利用した高強度イオンゲルの開発
口頭発表（一般）
- 第8回イオン液体討論会, 2017年11月, 日本語, 東京, 国内会議分子動力学法を用いたイオン液体水溶液のLCST型相挙動を決定する因子の解明
ポスター発表
- 膜シンポジウム2017, 2017年11月, 日本語, 富山, 国内会議反応性イオン液体含有ゲル薄膜の作製とそのガス透過性能評価
ポスター発表
- 膜シンポジウム2017, 2017年11月, 英語, 富山, 国内会議二次元金属酸化物ナノシート積層膜の開発–水中における構造安定性と膜分離性能–
ポスター発表
- 膜シンポジウム2017, 2017年11月, 英語, 富山, 国内会議浸透圧補助低圧逆浸透法を用いた高濃縮膜プロセスの検討
ポスター発表
- 膜シンポジウム2017, 2017年11月, 日本語, 富山, 国内会議金属錯体系イオン液体のカチオンサイズがガス透過挙動に及ぼす影響
ポスター発表
- 膜シンポジウム2017, 2017年11月, 英語, 富山, 国内会議TiO2–ZrO2– 有機キレート複合材料を用いたCO2 分離膜の作製と特性評価
ポスター発表
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議TEMPERATURE-RESPONS IVE PROPERTY OF DRAW SOLUTIONS FOR FORWARD OSMOS IS DESALINATION: A MOLECULAR SIMULATION STUDY
ポスター発表
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議NON-EQUILIBRIUM MOLECULAR DYNAM ICS SIMULATION OF WATER TRANSPORT THROUGH TiO2 NANOPOROUS MEMBRANES
ポスター発表
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議INORGANIC/ORGANIC COMPOSITE ION GEL MEMBRANE WITH HIGH MECHANICAL STRENGTH AND HIGH CO2 SEPARATION PERFORMANCE
口頭発表（一般）
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議FABRICAT ION OF HIGHLY STABLE STACKED NIOBATE NANOSHEET MEMBRANES FOR NANOFILTRAT ION
口頭発表（一般）
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議EFFECT OF NANOSHEET PREPARATION METHODS ON THE MEMBRANE PERFORMANCE OF STACKED NIOBATE NANOSHEET MEMBRANES
ポスター発表
- The 11th International Conference onSeparation Science and Technology(ICSST17), 2017年11月, 英語, 韓国（釜山）, 国際会議CHARACTERIZATION OF NANOPOROUS TITANIA-ZIRCONIA COMPOSITE MEMBRANES PREPARED BY USING ORGANIC CHELATING LIGANDS
ポスター発表
- 第16 回無機膜研究会, 2017年10月, 日本語, 静岡, 国内会議気体透過法による多孔膜のサブナノ細孔径分布評価
ポスター発表
- 第16 回無機膜研究会, 2017年10月, 日本語, 静岡, 国内会議メンブレンリアクターへの利用を目指した新規シリカ被覆金属触媒の調製
ポスター発表
- 第4回海水・生活・化学連携シンポジウム, 2017年10月, 日本語, 岩手, 国内会議FO膜法による海水淡水化に用いる温度相転移物質の再生に関する検討
ポスター発表
- 第16 回無機膜研究会, 2017年10月, 日本語, 静岡, 国内会議2D ナノシート材料を利用した積層型無機膜の作製と膜性能評価
ポスター発表
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議無機／有機ハイブリッドイオンゲルのネットワーク形成機構に関する基礎的検討
ポスター発表
- 第68回コロイドおよび界面化学討論会, 2017年09月, 日本語, 神戸, 国内会議無機／有機ダブルネットワークを有する高強度イオンゲル
口頭発表（一般）
- 第68回コロイドおよび界面化学討論会, 2017年09月, 日本語, 神戸, 国内会議無機／有機ダブルネットワークイオンゲルのネットワーク形成機構に関する基礎的検討
ポスター発表
- 化学工学会第49回秋季大会, 2017年09月, 英語, 名古屋, 国内会議無機/有機複合ネットワークを有する高強度イオンゲルの創製
口頭発表（一般）
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 化学工学会, 名古屋市, 国内会議正浸透膜法による糖液濃縮およびバイオエタノール生産に及ぼすポリアミド層の分離性能の影響
ポスター発表
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議酸素吸収性金属錯体系イオン液体のガス透過性におけるカチオンサイズの影響
口頭発表（一般）
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議温度相転移物質の膜分離特性に及ぼす操作温度の影響
ポスター発表
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議ニオブ酸ナノシート積層型分離膜のシートサイズが及ぼす膜性能への影響
ポスター発表
- 第68回コロイドおよび界面化学討論会, 2017年09月, 日本語, 神戸, 国内会議シリカナノ粒子ネットワークをfirst networkとするdouble networkイオンゲル
口頭発表（一般）
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議イオン液体溶媒中での無機/有機ハイブリッドネットワーク形成による高強度イオンゲルの調製
口頭発表（一般）
- 第66回高分子討論会, 2017年09月, 日本語, 愛媛, 国内会議イオン液体を含有する無機／有機double networkゲルのネットワーク形成機構と力学的特性
口頭発表（一般）
- 化学工学会第49回秋季大会, 2017年09月, 日本語, 名古屋, 国内会議アミノ酸イオン液体含有ゲル薄膜の作製とそのガス分離性能評価
口頭発表（一般）
- 化学工学会第49回秋季大会, 2017年09月, 英語, 名古屋, 国内会議Ionic liquid-based gel membrane for volatile organic compounds separation
ポスター発表
- International Symposium on Advanced Soft Matter, 2017年08月, 英語, JAPAN(HOKKAIDO ), 国内会議Development of inorganic/organic double network gels containing ionic liquids
ポスター発表
- 第63回高分子研究発表会, 2017年07月, 日本語, 神戸, 国内会議選択的に構築されるdouble network／nanocomposite構造を有する高強度イオンゲル
口頭発表（一般）
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Preparation and nanofiltration performance of niobate nanosheet membranes
口頭発表（一般）
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Novel facilitated transport membrane with cobalt salen complex-based ionic liquid as an O2 carrier
ポスター発表
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Fundamental study on ionic liquid-based draw solution for forward osmosis membrane process
ポスター発表
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Fabrication and evaluation of double network ion gel membranes for CO2/N2 separation at elevated temperature and humid condition
ポスター発表
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Effects of separation performance of forward osmosis membranes on sugar concentration for bio-ethanol production
ポスター発表
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Development of CO2 selective facilitated transport membrane with polymerized ionic liquid-based hydrophilic gel layer
ポスター発表
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), 2017年07月, 英語, USA(San Francisco), 国際会議Characterization of porous titania-zirconia composite membrane materials prepared by using organic chelating ligands
ポスター発表
- 日本海水学会第68年会, 2017年06月, 日本語, 京都, 国内会議LCST型相転移イオン液体/水混合系の浸透圧挙動と正浸透膜プロセスへの応用
口頭発表（一般）
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議有機溶媒耐性を有するポリアミド活性層複合膜の開発
ポスター発表
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議有機キレートをテンプレートとする多孔性TiO2-ZrO2複合膜の特性評価
ポスター発表
- 第66回高分子学会年次大会, 2017年05月, 日本語, 千葉, 国内会議無機／有機ネットワークを有する自己修復性Double Networkイオンゲル
口頭発表（一般）
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議正浸透膜の耐圧性能に及ぼす多孔性支持膜へのアミン修飾の影響
ポスター発表
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議金属酸化物ナノシート積層膜の形成と膜性能に及ぼす各種ナノシート合成法の影響
ポスター発表
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議温度相転移性正浸透駆動溶液の特異な浸透圧挙動に関する基礎的検討
ポスター発表
- 日本膜学会第39年会, 2017年05月, 日本語, 東京, 国内会議アミノ酸イオン液体含有高強度ゲル薄膜の作製とそのCO2分離性能評価
ポスター発表
- 分離技術会年会2017, 2017年05月, 日本語, 神奈川, 国内会議TiO2ナノ細孔内水透過シミュレーションと透過モデルによる解析
口頭発表（一般）
- 分離技術会年会2017, 2017年05月, 日本語, 神奈川, 国内会議TiO2-ZrO2複合膜材料のナノ細孔構造に及ぼす有機キレート配位子の影響
口頭発表（一般）
- 日本膜学会第39年会, 2017年05月, 英語, 東京, 国内会議Fabrication of double network ion gel membranes with high performance for CO2/N2 separation
口頭発表（一般）
- The 5th Asian Graduate Student Symposium on Membrane Engineering (AGSM5), 2017年04月, 英語, JAPAN（KOBE), 国内会議Development of Novel Co(II) Containing Ionic Liquid as an Oxygen Carrier
口頭発表（一般）
- 第19回化学工学会学生発表会 (豊中大会), 2017年03月, 日本語, 大阪, 国内会議有機キレートを用いた多孔性TiO2-ZrO2複合膜の作製と構造評価
口頭発表（一般）
- 第19回化学工学会学生発表会（豊中大会）, 2017年03月, 日本語, 大阪, 国内会議無機\／有機ハイブリッドイオンゲルのネットワーク構造に関する基礎的研究
口頭発表（一般）
- 化学工学会第82年会, 2017年03月, 日本語, 東京, 国内会議分子動力学法を用いたTiO2ナノ細孔内水透過機構の検討
ポスター発表
- 化学工学会第82年会, 2017年03月, 日本語, 東京, 国内会議分子シミュレーションによる温度応答性イオン液体水溶液の相転移挙動解析
ポスター発表
- 化学工学会第82年会, 2017年03月, 英語, 東京, 国内会議二次元チャネル構造を有する金属酸化物ナノシート積層膜の膜性能評価
口頭発表（一般）
- 第19回化学工学会学生発表会（豊中大会）, 2017年03月, 日本語, 大阪, 国内会議多段式低圧逆浸透法を利用した塩水濃縮プロセスの検討
口頭発表（一般）
- 化学工学会第82年会, 2017年03月, 英語, 東京, 国内会議正浸透膜プロセス駆動溶液へのLCST型相転移イオン液体/水混合系の適用に関する基礎的検討
ポスター発表
- 日本海水学会若手会 第８回学生研究発表会, 2017年03月, 日本語, 山口, 国内会議浸透圧補助低圧逆浸透法による海水高濃縮技術に関する基礎的検討
口頭発表（一般）
- 化学工学会第82年会, 2017年03月, 英語, 東京, 国内会議吸引ろ過法により作製されたニオブ酸ナノシート積層膜の膜性能に及 ぼす作製条件の影響
ポスター発表
- 化学工学会第82年会, 2017年03月, 日本語, 東京, 国内会議ポリアミド活性層の表面改質が及ぼす正浸透膜法による糖液濃縮およ びバイオエタノール生産への影響
ポスター発表
- 第19回化学工学会学生発表会（豊中大会）, 2017年03月, 日本語, 大阪, 国内会議イオン石帯性ポリマー微粒子を用いたCO2促進輸送膜の作製とCO2分離性能評価
口頭発表（一般）
- 化学工学会第82年会, 2017年03月, 日本語, 東京, 国内会議TiO2-ZrO2-有機キレート複合材料の特性評価とCO2分離膜への応用
ポスター発表
- 第19回化学工学会学生発表会（豊中大会）, 2017年03月, 日本語, 大阪, 国内会議FO膜プロセスに用いる温度相転移物質の会合挙動と浸透圧の関係
口頭発表（一般）
- 膜シンポジウム2016, 2016年12月, 日本語, 大阪, 国内会議糖液濃縮用分離膜の表面改質による糖類と発酵阻害物質の選択透過性への影響
ポスター発表
- 膜シンポジウム2016, 2016年12月, 日本語, 大阪, 国内会議正浸透膜プロセス駆動液への温度応答性イオン液体水溶液の適用に関する基礎的検討
口頭発表（一般）
- 膜シンポジウム2016, 2016年12月, 日本語, 大阪, 国内会議酸素吸収性金属錯体系イオン液体の創製と促進輸送膜への応用
口頭発表（一般）
- 膜シンポジウム2016, 2016年12月, 日本語, 大阪, 国内会議吸引ろ過法を用いた異なる膜厚さのナノシート積層膜の作製と膜分離性能
ポスター発表
- Kobe University Academic Research and Education Forum（KUAREF）, 2016年12月, 英語, The Margo Hotel, Depok, Indonesia, 国際会議Membrane Technology for CO2 Separation in Kobe University-Ionic Liquid Impregnated Gel and Ceramic Membranes-
シンポジウム・ワークショップパネル（指名）
- 第15回無機膜研究会, 2016年11月, 日本語, 愛知, 国内会議吸引ろ過法により作製されたニオブ酸ナノシート積層膜の膜性能評価
ポスター発表
- THE 5th ASIAN CONFERENCE ON INNOVATIVE ENERGY & ENVIRONEMNTAL CHEMICAL ENGINEERING, 2016年11月, 英語, 横浜, 国際会議Molecular Dynamics Simulation for Effect of the Amino-group Densities of Functionalized Ionic Liquids for CO2 Capture
口頭発表（一般）
- 第7回イオン液体討論会, 2016年10月, 日本語, 金沢, 国内会議酸素吸収性金属錯体のイオン液体化と酸素キャリアへの適用
口頭発表（一般）
- 化学工学会第48回秋季大会, 2016年09月, 日本語, 徳島, 国内会議正浸透膜を用いた水処理プロセスへの適用を目指したイオン液体型駆動液の開発
ポスター発表
- 化学工学会第48回秋季大会, 2016年09月, 日本語, 徳島, 国内会議酸素吸収性金属錯体系イオン液体の創製と酸素分離への応用
口頭発表（一般）
- 化学工学会第48回秋季大会, 2016年09月, 英語, 徳島, 国内会議Development of tough gel membrane containing a CO2 reactive ionic liquid by casting method
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Tough Ion Gel Membranes with High CO2 Separation Performance
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Ion Gel Membranes with High Pressure Resistance for CO2 Separation
口頭発表（一般）
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議High CO2 Separation Performance Double Network Ion Gel Membranes with Excellent Pressure Stability
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Facilitated Transport Membrane Containing an Ionic Liquid-Based CO2 Carrier with Plural Amino Groups
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Development of novel cobalt(II) complex-based ionic liquid as an O2 separation medium
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Development of Amine-Functionalized Low Viscosity Ionic Liquids-Based CO2 Separation Membranes
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Development an Estimation Model of CO2 Permeability of Amino Acid Ionic Liquid-based Facilitated Transport Membranes
ポスター発表
- The 10th Conference of Aseanian Membrane Society (AMS10), 2016年07月, 英語, JAPAN（NARA), 国際会議Cs+ Rejection Behavior of Polyamide RO Membranes for Feed Solutions with Extremely Low Salt Concentrations
口頭発表（一般）
- 第5回JACI/GSCシンポジウム, 2016年06月, 日本語, 神戸, 国内会議複数のCO2反応部位を有する新規イオン液体の合成とCO2分離膜への応用
口頭発表（一般）
- 第5回JACI/GSCシンポジウム, 2016年06月, 日本語, 神戸, 国内会議酸素吸収性金属錯体系イオン液体の創製
口頭発表（一般）
- 第5回JACI/GSCシンポジウム, 2016年06月, 英語, 神戸, 国内会議Double Network Ion Gel Membranes with High Performance for CO2 Capture
ポスター発表
- 第5回JACI/GSCシンポジウム, 2016年06月, 英語, 神戸, 国内会議Amino acid ionic liquids-based ion gel membranes with high CO2 separation efficiency for ventilation application
ポスター発表
- 第65回高分子学会年次大会, 2016年05月, 日本語, 神戸, 国内会議イオン液体含有高強度ゲルの開発とCO2分離膜への応用
口頭発表（一般）
- 日本膜学会第38 年会, 2016年05月, 英語, 東京, 国内会議Fabrication of double network ion gel membranes with high performance for CO2/N2 separation
口頭発表（一般）
- 日本膜学会第38 年会, 2016年05月, 英語, 東京, 国内会議Application of Amino Acid Ionic Liquid-based Facilitated CO2 Transport Membranes for Ventilation System
口頭発表（一般）
- Asian Student Symposium on Membrane Engineering (AGSM4), 2016年04月, 英語, Korea, 国際会議HIGH PERFORMANCE ION GEL MEMBRANE FOR CO2/N2 SEPARATION
口頭発表（一般）
- 化学工学会第81年会, 2016年03月, 日本語, 大阪, 国内会議新規金属錯体系イオン液体の創製とそのガス吸収性に関する基礎的検討
ポスター発表
- 化学工学会第81年会, 2016年03月, 日本語, 大阪, 国内会議圧力場でのCO2分離を指向した低粘性反応性イオン液体含有ゲル膜の創製
ポスター発表
- 化学工学会第81年会, 2016年03月, 日本語, 大阪, 国内会議アミノ酸イオン液体含浸膜のCO2透過係数推算モデルの構築
口頭発表（一般）
- 化学工学会第81年会, 2016年03月, 日本語, 大阪, 国内会議Tough ion gel membrane for CO2 capture
口頭発表（一般）
- 第18回化学工学会学生発表会(福岡大会), 2016年01月, 日本語, 福岡, 国内会議複数のCO2反応部位を有する新規イオン液体の創製とCO2選択分離膜への応用
口頭発表（一般）
- 第18回化学工学会学生発表会(福岡大会), 2016年01月, 日本語, 福岡, 国内会議ガス吸収性を有する新規金属錯体系イオン液体の創製
口頭発表（一般）
- Pacifichem 2015, 2015年12月, 英語, USA, 国際会議Tough ion gel membranes with organic-inorganic hybrid network for CO2 capture
ポスター発表
- Pacifichem 2015, 2015年12月, 英語, USA, 国際会議Amino acid ionic liquid-based tough gel membrane for CO2 capture
口頭発表（一般）
- 膜シンポジウム2015, 2015年11月, 日本語, 神戸, 国内会議理論限界CO2選択透過性と優れた耐圧性を併せ持つイオン液体含有高強度ゲル薄膜の開発
口頭発表（一般）
- 膜シンポジウム2015, 2015年11月, 日本語, 神戸, 国内会議高圧場でのCO2分離を指向した低粘性反応性イオン液体含有高強度ゲル膜の開発
ポスター発表
- 2015 AIChE Annual Meeting, 2015年11月, 英語, US, 国際会議Molecular Design of High CO2 Reactivity and Low Viscosity Ionic Liquids for CO2 Separative Facilitated Transport Membrane
口頭発表（一般）
- 膜シンポジウム2015, 2015年11月, 日本語, 神戸, 国内会議LCST型相転移を示す高浸透圧イオン液体駆動液の開発
ポスター発表
- 膜シンポジウム2015, 2015年11月, 英語, 神戸, 国内会議Fabrication of tough ion gel membranes for CO2 Separation
ポスター発表
- 膜シンポジウム2015, 2015年11月, 日本語, 神戸, 国内会議CO2分離型促進輸送膜への適用を指向した高CO2反応性と低粘性を併せ持つイオン液体の分子シミュレーションによる設計
ポスター発表
- 2015 AIChE Annual Meeting, 2015年11月, 英語, US, 国際会議Amino Acid Ionic Liquids-Based Ion Gel Membranes with Superior Pressure Resistance for CO2 Capture Application
口頭発表（一般）
- 膜シンポジウム2015, 2015年11月, 英語, 神戸, 国内会議Amino acid ionic liquids-based ion gel membranes with superior CO2 separation performance under pressurized condition
ポスター発表
- 第6回イオン液体討論会, 2015年10月, 日本語, 京都, 国内会議無機／有機ハイブリッドネットワークを有する高強度イオンゲルの創製
口頭発表（一般）
- 化学工学会第47回秋季大会, 2015年09月, 日本語, 北海道, 国内会議低粘性反応性イオン液体含有CO2選択透過膜の開発
口頭発表（一般）
- 化学工学会第47回秋季大会, 2015年09月, 日本語, 北海道, 国内会議高浸透圧を有する温度応答性イオン液体の創製と正浸透法への適用
ポスター発表
- 化学工学会第47回秋季大会, 2015年09月, 日本語, 北海道, 国内会議UF膜を利用した閉鎖型浸透圧発電に関する基礎的検討
口頭発表（一般）
- 2015年度日本海水学会第66年会, 2015年07月, 日本語, 神奈川, 国内会議神戸大学・先端膜工学センターにおける正浸透膜プロセスの開発動向
口頭発表（一般）
- The 9th Conference of Aseanian Membrane Society (AMS9), 2015年07月, 英語, Taipei, 国際会議Tough Ion Gels with Organic-Inorganic Hybrid Network for CO2 Separation Membranes
ポスター発表
- International Workshop on “Recent Progress on Membrane Separation and CO2 Capture, 2015年07月, 英語, 福岡, 国内会議mino acid ionic liquid-based CO2 separation membranes
口頭発表（一般）
- The 9th Conference of Aseanian Membrane Society (AMS9), 2015年07月, 英語, Taipei, 国際会議Investigation on the Molecular Design of CO2-Reactive Ionic Liquids as a CO2 Carrier of a Facilitated Transport Membrane
ポスター発表
- The 9th Conference of Aseanian Membrane Society (AMS9), 2015年07月, 英語, Taipei, 国際会議Development of Ionic Liquid Based-Draw Solution with Both LCST Type Phase Separation and High Osmotic Pressure
ポスター発表
- 日本膜学会第37年会, 2015年05月, 日本語, 東京, 国内会議高浸透圧を発現する新規温度応答性イオン液体の創製と正浸透膜プロセスへの適用
ポスター発表
- 3rd Asian Graduate Student Symposium on Membrane Engineering (AGSM3), 2015年05月, 英語, China, 国際会議Molecular Design of High CO2 Reactivity and Low Viscosity Ionic Liquids for CO2 Separative Facilitated Transport Membrane
口頭発表（一般）
- 日本膜学会第37年会, 2015年05月, 英語, 東京, 国内会議High pressure resistance double network gel membranes containing amino acid ionic liquids as the CO2 carrier
口頭発表（一般）
- 3rd Asian Graduate Student Symposium on Membrane Engineering (AGSM3), 2015年05月, 英語, China, 国際会議Amino acid ionic liquid based gel membrane with superior CO2 permeability and pressure resistance
口頭発表（一般）
- 化学工学会第80年会, 2015年03月, 日本語, 東京（芝浦工業大学豊洲キャンパス）, 国内会議耐圧性と高速CO2選択透過性を併せ持つアミノ酸イオン液体ゲル膜の創製
口頭発表（一般）
- 化学工学会第80年会, 2015年03月, 日本語, 東京（芝浦工業大学豊洲キャンパス）, 国内会議自己修復性有機-無機ハイブリッドネットワークを有する高強度イオンゲルの創製
口頭発表（一般）
- 第17回化学工学会学生発表会(徳島大会), 2015年03月, 日本語, 徳島（徳島大学常三島キャンパス）, 国内会議イオン液体水溶液の浸透圧に関する基礎的検討
口頭発表（一般）
- 膜シンポジウム2014, 2014年11月, 日本語, 兵庫県（神戸大学）, 国内会議耐圧性と迅速なCO2透過性を有する相互侵入高分子網目イオンゲルフィルムの開発
ポスター発表
- 膜シンポジウム2014, 2014年11月, 日本語, 兵庫県（神戸大学）, 国内会議環状アミノ酸イオン液体含浸膜のCO2分離性能に関する基礎的検討
ポスター発表
- 膜シンポジウム2014, 2014年11月, 日本語, 兵庫県（神戸大学）, 国内会議アミノ酸イオン液体含有高分子ゲルを用いたCO2促進輸送膜の開発
ポスター発表
- The 2nd International Conference on Maintenance Science and Technology (ICMST-Kobe 2014), 2014年11月, 英語, 兵庫県（神戸大学）, 国際会議Fundamental Investigation on Removal of Low Concentration Cesium from Radioactive Polluted Water with Reverse Osmosis Membrane
ポスター発表
- 22nd Polymer Networks Group Meeting (PNG) and the 10th Gel Symposium (PN&G2014), 2014年11月, 英語, Tokyo(Ito International Research Center: The University of Tokyo), 国際会議Fundamental investigation of interpenetrating polymer network ion-gels combining high toughness and solute diffusivity
ポスター発表
- 膜シンポジウム2014, 2014年11月, 日本語, 兵庫県（神戸大学）, 国内会議Effects of Water Concentrations on the Structural and Diffusion Properties of Amino acid Ionic Liquids using Molecular Dynamics Simulations
口頭発表（一般）
- 第5回イオン液体討論会, 2014年10月, 日本語, 神奈川（横浜シンポジア）, 国内会議相互侵入高分子網目を利用した高強度かつ迅速な溶質拡散性を有するイオンゲルの開発
ポスター発表
- The 10th International Conference on Separation Science and Technology (ICSST14), 2014年10月, 英語, 奈良県 （新公会堂）, 国際会議Tough ion gel film for CO2 separation
ポスター発表
- The 10th International Conference on Separation Science and Technology (ICSST14), 2014年10月, 英語, 奈良県 （新公会堂）, 国際会議Facilitated CO2 Transport Membrane Utilizing a Reactive Ionic Liquid
ポスター発表
- 第5回イオン液体討論会, 2014年10月, 日本語, 神奈川（横浜シンポジア）, 国内会議CO2選択透過性を有するアミノ酸イオン液体含有高分子ゲル膜の開発
ポスター発表
- 第46回化学工学会秋季大会, 2014年09月, 日本語, 福岡市（九州大学：伊都キャンパス）, 国内会議耐圧性と迅速なCO3透過性を両立するイオンゲルフィルムの創製
口頭発表（一般）
- 第63回高分子討論会, 2014年09月, 日本語, 長崎（長崎大学：文教キャンパス）, 国内会議迅速な溶質拡散性を有する高強度相互侵入高分子網目イオンゲルの開発
口頭発表（一般）
- 10th International Congress on Membranes and Membrane Processes (ICOM2014), 2014年07月, 英語, Suzhou, China, 国際会議Development of tough Double Network ion-gel films for gas separation
ポスター発表
- 10th International Congress on Membranes and Membrane Processes (ICOM2014), 2014年07月, 英語, Suzhou, China, 国際会議Development of a facilitated CO2 transport membrane containing an amino acid ionic liquid with desired chemical structure
口頭発表（一般）
- 10th International Congress on Membranes and Membrane Processes (ICOM2014), 2014年07月, 英語, Suzhou, China, 国際会議Development of a CO2 selective facilitated transport ion-gel membrane with amino acid ionic liquids as a CO2 carrier
ポスター発表
- 2nd International Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT2014), 2014年06月, 英語, Toronto, Canada, 国際会議Task specific ionic liquid-based facilitated transport membrane with high CO2 permeability at around room temperature
ポスター発表
- 2nd International Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT2014), 2014年06月, 英語, Toronto, Canada, 国際会議Novel tough Double Network ion-gel films for CO2 separation media
ポスター発表
- 2nd International Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT2014), 2014年06月, 英語, Toronto, Canada, 国際会議A new-class of facilitated transport membrane containing a CO2-reactive ionic liquid
口頭発表（一般）
- 日本膜学会第36年会, 2014年05月, 日本語, 東京（早稲田大学）, 国内会議相互侵入高分子網目構造を有するイオンゲルを用いた耐圧性 CO2分離膜の創製
ポスター発表
- 日本膜学会第36年会, 2014年05月, 日本語, 東京（早稲田大学）, 国内会議環状アミノ酸イオン液体含浸膜のCO2分離性能に関する基礎的検討
ポスター発表
- 分離技術会 年会2014, 2014年05月, 日本語, 名古屋市（名古屋大学東山キャンパス）, 国内会議イオン液体を拡散分離媒体とするCO2分離膜の開発
口頭発表（一般）
- 日本膜学会第36年会, 2014年05月, 日本語, 東京（早稲田大学）, 国内会議CO2キャリア含有高分子ゲルを用いた促進輸送膜の創製とそのCO2透過挙動
口頭発表（一般）
- 第16回化学工学会学生発表会, 2014年03月, 日本語, 化学工学会, 大阪府立大学, 国内会議環状アミノ酸を有するイオン液体を用いたCO2分離膜に関する基礎的検討
口頭発表（一般）
- 化学工学会第79年会, 2014年03月, 日本語, 化学工学会, 岐阜大学, 国内会議アミノ酸イオン液体含有高分子イオンゲルを用いたCO2選択分離膜の創製
口頭発表（一般）
- 化学工学会第79年会, 2014年03月, 日本語, 化学工学会, 岐阜大学, 国内会議アミノ酸イオン液体含浸膜のCO2透過性能に及ぼすガス性状の影響に関する基礎的検討
ポスター発表
- WINTech2014, 2014年03月, 日本語, 国際会議Development of CO2 separation membranes for a CO2 supply system of a plant factory
[招待有り]
口頭発表（招待・特別）
- 化学工学会第79年会, 2014年03月, 英語, 化学工学会, 岐阜大学, 国内会議CO2 separation membranes containing reactive ionic liquids as a facilitated CO2 transport media
[招待有り]
口頭発表（招待・特別）
- 膜シンポジウム2013, 2013年11月, 日本語, 日本膜学会, 京都府立医科大学 （京都）, 国内会議万能型CO2分離膜の創製を目指した反応性イオン液体設計指針に関する基礎的検討
口頭発表（一般）
- 膜シンポジウム2013, 2013年11月, 日本語, 日本膜学会, 京都府立医科大学 （京都）, 国内会議アミノ酸イオン液体を溶媒とする新規イオノゲルの創製とCO2促進輸送膜への応用
ポスター発表
- 8th International Membrane Science and Technology Conference 2013, 2013年11月, 英語, the Membrane Society of Australasia, Melbourne (Australia), 国際会議Purification and Concentration of C5 Sugar Solution by Using Membrane Technology
ポスター発表
- 2013 AIChE Annual Meeting, 2013年11月, 英語, American Institute of Chemical Engineers, サンフランシスコ （USA）, 国際会議Fundamental Investigation on CO2 permeation mechanism of amino acid ionic liquid-based membranes
ポスター発表
- 8th International Membrane Science and Technology Conference 2013, 2013年11月, 英語, the Membrane Society of Australasia, Melbourne (Australia), 国際会議Fabrication of a novel tough ionogel film with interpenetrating polymer network
ポスター発表
- 膜シンポジウム2013, 2013年11月, 日本語, 日本膜学会, 京都府立医科大学 （京都）, 国内会議CO2分離膜として好適な分子構造を有するアミノ酸イオン液体の設計
口頭発表（一般）
- 化学工学会第45回秋季大会, 2013年09月, 日本語, 化学工学会, 岡山大学, 国内会議ガス分離膜への適用を目指した高強度相互侵入高分子網目イオノゲルフィルムの創製
ポスター発表
- 化学工学会第45回秋季大会, 2013年09月, 日本語, 化学工学会, 岡山大学, 国内会議アミノ酸イオン液体を溶媒とする新規イオノゲルの創製と二酸化炭素分離膜への応用
ポスター発表
- 第62回高分子討論会, 2013年09月, 日本語, 高分子学会, 金沢大学角間キャンパス（金沢）, 国内会議アミノ酸イオン液体を溶媒とする高分子ゲルの創製とCO2促進輸送膜への応用
ポスター発表
- 化学工学会第45回秋季大会, 2013年09月, 日本語, 化学工学会, 岡山大学, 国内会議CO2分離膜として好適なガス吸収特性を有するアミノ酸イオン液体の設計
口頭発表（一般）
- International Membrane Conference in Taiwan 2013, 2013年08月, 英語, Research & Development Center for Membrane Technology, CYU, Chungli, Taiwan, 国際会議Fabrication of amino acid ionic liquid-based facilitated CO2 transport membrane
[招待有り]
口頭発表（招待・特別）
- The 8th Conference of Aseanian Membrane Society, 2013年07月, 英語, Aseanian Membrane Society, Renmin Square Hotel （Xi’an, China), 国際会議Preparation of Biomimetic Reverse Osmosis Membrane Using Phospholipid Bilayers and Gramicidin A via Electrostatic Interaction
ポスター発表
- 33rd International Conference on Solution Chemistry (ICSC)Post-symposium on Ionic Liquids, 2013年07月, 英語, Ionic Liquid Research Association, AIST Tokyo aterfront(Tokyo), 国際会議Ionic liquid membranes for gas separation
口頭発表（一般）
- The 8th Conference of Aseanian Membrane Society, 2013年07月, 英語, Aseanian Membrane Society, Renmin Square Hotel （Xi’an, China), 国際会議Fabrication of a Polymeric Amino Acid Ionic Liquid Gel for CO2 Separation Membranes
ポスター発表
- The 8th Conference of Aseanian Membrane Society, 2013年07月, 英語, Aseanian Membrane Society, Renmin Square Hotel （Xi’an, China), 国際会議A Fundamental Investigation of Permeation through Amino Acid Ionic Liquid-Based Facilitated Transport Membranes at Low Temperature
口頭発表（一般）
- ICMAT 2013, 2013年06月, 英語, The Materials Research Society of Singapore, Singapore, 国際会議Fabrication of Amino Acid Ionic Liquid-based Facilitated CO2 Transport Membranes
口頭発表（招待・特別）
- 第62回高分子学会年次大会, 2013年05月, 日本語, 高分子学会, 京都国際会館 （京都市）, 国内会議高強度相互侵入高分子網目イオンゲルの創製
口頭発表（一般）
- 第35年会日本膜学会, 2013年05月, 日本語, 日本膜学会, 東京（早稲田大学）, 国内会議アミノ酸イオン液体含浸膜のCO2透過性に及ぼすアミン級数の影響
口頭発表（一般）
- Asian Graduate Student Symposium on Membrane Engineering, 2013年04月, 英語, 先端膜工学研究推進機構, 神戸大学, 国際会議Fabrication of a tough ion-gel film for gas separation
口頭発表（一般）
- Asian Graduate Student Symposium on Membrane Engineering, 2013年04月, 英語, 先端膜工学研究推進機構, 神戸大学, 国際会議Direct numerical simulation of permeation of particle dispersion through a membrane pore
口頭発表（一般）
- 第15回化学工学会学生発表会 北九州大会, 2013年03月, 日本語, 化学工学会, 北九州市立大学, 国内会議相互侵入高分子網目構造を利用した新規高強度イオンゲルの創製
口頭発表（一般）
- 化学工学会 第78年会, 2013年03月, 日本語, 化学工学会, 大阪大学, 国内会議相互侵入高分子網目構造を利用した高強度イオンゲルの創製に関する基礎的検討
口頭発表（一般）
- 第15回化学工学会学生発表会 北九州大会, 2013年03月, 日本語, 化学工学会, 北九州市立大学, 国内会議湿潤雰囲気下におけるアミノ酸イオン液体へのCO2吸収平衡に関する基礎的検討
口頭発表（一般）
- 化学工学会 第78年会, 2013年03月, 日本語, 化学工学会, 大阪大学, 国内会議アミノ酸イオン液体含浸膜のガス透過性に及ぼすCO2吸収に伴う粘度の影響
口頭発表（一般）
- 第15回化学工学会学生発表会 北九州大会, 2013年03月, 日本語, 化学工学会, 北九州市立大学, 国内会議アミノ酸イオン液体を溶媒とする高分子ゲルの創製と二酸化炭素分離膜への応用
口頭発表（一般）
- 化学工学会 第78年会, 2013年03月, 日本語, 化学工学会, 大阪大学, 国内会議Gramicidin Aを用いた生体膜模倣型逆浸透膜の作製における製膜条件の検討
口頭発表（一般）
- 新科学技術推進協会環境技術部会講演会, 2013年01月, 日本語, 国内会議CO2促進輸送機能を有する反応性イオン液体含浸膜の開発
[招待有り]
口頭発表（招待・特別）
- 膜シンポジウム2012, 2012年11月, 日本語, 日本膜学会, 神戸, 国内会議直接数値シミュレーションを用いた定速ろ過における微粒子分散系の膜細孔透過と膜間差圧挙動に関する検討
ポスター発表
- 膜シンポジウム2012, 2012年11月, 日本語, 日本膜学会, 神戸, 国内会議多価電解質で安定化された銀ナノ粒子を交互吸着させた金属ナノ粒子積層型分離膜の開発
ポスター発表
- 膜シンポジウム2012, 2012年11月, 日本語, 日本膜学会, 神戸, 国内会議イオンゲル促進輸送膜の創製とプロピレン/プロパンの分離
口頭発表（一般）
- 膜シンポジウム2012, 2012年11月, 日本語, 日本膜学会, 神戸, 国内会議Gramicidin Aをチャネル物質とした生体膜構造模倣型逆浸透膜の作製
ポスター発表
- 化学工学会 第44回秋季大会, 2012年09月, 日本語, 化学工学会, 東北大学, 国内会議微粒子分散系の膜細孔内透過挙動に関する直接数値シミュレーション
ポスター発表
- 化学工学会 第44回秋季大会, 2012年09月, 日本語, 化学工学会, 東北大学, 国内会議中空糸膜成形に及ぼす高分子溶液の非ニュートン特性と固化速度の影響
ポスター発表
- 化学工学会 第44回秋季大会, 2012年09月, 日本語, 化学工学会, 東北大学, 国内会議グラミシジンAチャネルを用いたリン脂質二分子膜型逆浸透膜の開発
ポスター発表
- 化学工学会 第44回秋季大会, 2012年09月, 日本語, 化学工学会, 東北大学, 国内会議キャリア輸送機能を有するイオンゲル膜の創製に関する基礎的検討
ポスター発表
- 化学工学会 第44回秋季大会, 2012年09月, 日本語, 化学工学会, 東北大学, 国内会議Wet Processによって調製された金属ナノ粒子を用いた粒子積層型無機UF膜の開発
ポスター発表
- AMS7, 2012年07月, 英語, The Membrane Society of Korea, 国際会議Investigation of Correlation of Membrane Fouling with Membrane Property in Membrane Bioreactor
ポスター発表
- AMS7, 2012年07月, 英語, The Membrane Society of Korea, 国際会議Fabrication of Novel CO2 Separation Membranes Containing Amino Acid Ionic Liquids Utilized as a CO2 Carrier and a Diffusion Medium
ポスター発表
- AMS7, 2012年07月, 英語, 国際会議Development of low-fouling PVDF membrane with zwitterionic copolymer via TIPS method
口頭発表（一般）
- AMS7, 2012年07月, 英語, The Membrane Society of Korea, 国際会議Development of Anti-Fouling PVDF Hollow Fiber Membrane by Coating of MPC Polymer
ポスター発表
- 分離技術会 年会2012, 2012年06月, 日本語, 分離技術会, 大阪, 国内会議粒子分散系の膜細孔透過に関する直接数値シミュレーション
ポスター発表
- 分離技術会 年会2012, 2012年06月, 日本語, 分離技術会, 大阪, 国内会議正浸透膜の透水性能に与える膜構造の影響
ポスター発表
- 分離技術会 年会2012, 2012年06月, 日本語, 分離技術会, 大阪, 国内会議グラミシジンAチャネルを有する生体膜構造を模倣した逆浸透膜の開発
ポスター発表
- 分離技術会 年会2012, 2012年06月, 日本語, 分離技術会, 大阪, 国内会議アミノ酸イオン液体含浸CO2選択分離膜の創製
ポスター発表
- 日本膜学会第34年会, 2012年05月, 日本語, 日本膜学会, 国内会議両性イオン基を有する共重合体の添加による耐ファウリング性中空糸膜の開発
口頭発表（一般）
- 日本膜学会第34年会, 2012年05月, 日本語, 日本膜学会, 国内会議MBRにおける膜ファウリング挙動と膜特性の相関に関する研究
口頭発表（一般）
- 化学工学会 第77年会, 2012年03月, 日本語, 化学工学会, 東京, 国内会議各種膜材料表面における微生物付着およびバイオフィルム形成の挙動評価
口頭発表（一般）
- 化学工学会 第77年会, 2012年03月, 日本語, 化学工学会, 東京, 国内会議アミノ酸イオン液体を反応輸送媒体とする革新的CO2分離膜の創製
口頭発表（一般）
- 化学工学会 第77年会, 2012年03月, 日本語, 化学工学会, 東京, 国内会議Layer-by-layer法を用いたシリカ薄膜を分離層とする無機UF膜の作製
口頭発表（一般）
- 化学工学会 第77年会, 2012年03月, 日本語, 化学工学会, 東京, 国内会議Development of low-fouling PVDF membrane blending zwitterionic copolymer via TIPS method
口頭発表（一般）
- 膜シンポジウム2011, 2011年11月, 日本語, 日本膜学会, 宜野湾, 国内会議イオン液体を用いた CO2 選択透過型促進輸送膜の開発
口頭発表（一般）
- 膜シンポジウム2011, 2011年11月, 日本語, 日本膜学会, 宜野湾, 国内会議MBRにおけるファウリング特性に関する研究
口頭発表（一般）
- 化学工学会 第43回秋季大会, 2011年09月, 日本語, 化学工学会, 名古屋, 国内会議分離機能層としてリン脂質二重層を導入した逆浸透膜の開発
口頭発表（一般）
- 化学工学会 第43回秋季大会, 2011年09月, 日本語, 化学工学会, 名古屋, 国内会議リゾチーム固定化ポリアミド逆浸透膜の耐バイオファウリング性の評価
口頭発表（一般）
- 化学工学会 第43回秋季大会, 2011年09月, 日本語, 化学工学会, 名古屋, 国内会議Layer-by-Layer法を用いた逆浸透膜の膜ファウリング抑制に関する研究
口頭発表（一般）
- 化学工学会 第43回秋季大会, 2011年09月, 日本語, 化学工学会, 名古屋, 国内会議DLVO理論に基づく粒子内包架橋メラミンマイクロカプセル調製に関する検討
口頭発表（一般）
- ICOM 2011, 2011年07月, 英語, European Membrane Society, Amsterdam, Netherland, 国際会議Study on fouling reduction of reverse osmosis membrane by surface modification via layer-by-layer assembly
ポスター発表
- ICOM 2011, 2011年07月, 英語, European Membrane Society, Amsterdam, Netherland, 国際会議Preparation of antifouling hollow fiber membrane and application to membrane bioreactor
ポスター発表
- 分離技術会年会2011, 2011年06月, 日本語, 分離技術会, 川崎, 国内会議グラフト処理による PVDF膜の耐ファウリング性向上に関する検討
ポスター発表
- 膜学会第33年会, 2011年05月, 日本語, 日本膜学会, 東京, 国内会議膜材料表面が微生物付着およびバイオフィルム形成に及ぼす影響
ポスター発表
- 膜学会第33年会, 2011年05月, 日本語, 日本膜学会, 東京, 国内会議非溶媒誘起型相分離法による製膜時における固化挙動の検討
口頭発表（一般）
- 膜学会第33年会, 2011年05月, 日本語, 日本膜学会, 東京, 国内会議銀微粒子の固定化により抗菌性を付与した逆浸透膜の開発
ポスター発表
- 膜学会第33年会, 2011年05月, 日本語, 日本膜学会, 東京, 国内会議CO2選択分離型中空糸膜の創製とその性能に影響を及ぼす因子の検討
ポスター発表
- 膜学会第33年会, 2011年05月, 日本語, 日本膜学会, 東京, 国内会議AFMとQCM–Dによる水処理膜へのタンパク質の吸着挙動解析
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議微粒子を内包したかご状マイクロカプセルの創製に及ぼす界面活性剤の影響
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議非溶媒誘起型相分離法を用いた高分子膜作製時における固化速度の検討
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議交互吸着法を用いたRO膜の表面改質による膜ファウリング抑制に関する研究
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議リン脂質ポリマーをコーティングした低ファウリング性水処理用中空糸膜の開発
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議イオン液体含浸促進輸送膜によるプロパン/プロピレンの分離
口頭発表（一般）
- 化学工学会 第76年会, 2011年03月, 日本語, 化学工学会, 東京, 国内会議AFMおよびQCM-Dを用いたタンパク質の膜ファウリング挙動に関する検討
口頭発表（一般）
- 成形加工シンポジア'10, 2010年11月, 日本語, プラスチック成形加工学会, 神戸市, 国内会議マイクロ流路と溶媒抽出を用いた単分散ゲル粒子の調製
ポスター発表
- 第59回高分子討論会, 2010年09月, 日本語, 高分子学会, 札幌市, 国内会議多孔性炭酸カルシウム微粒子を鋳型に用いたDNAカプセル作製法の開発
ポスター発表
- 化学工学会第42回秋季大会, 2010年09月, 日本語, 化学工学会, 京都市, 国内会議アビジン-ビオチン相互作用を利用した架橋DNAマイクロカプセルの作製
口頭発表（一般）
- 化学工学会第42回秋季大会, 2010年09月, 日本語, 化学工学会, 京都市, 国内会議CO2選択分離型促進輸送膜の透過性に及ぼす添加剤効果
口頭発表（一般）
- 化学工学会第75年会, 2010年03月, 日本語, 鹿児島市, 国内会議水素製造を目的としたCO2選択透過性膜を用いたメンブレンリアクターの性能評価
口頭発表（一般）
- 化学工学会関西支部 環境&資源エネルギー研究会 第3回研究会, 2010年02月, 日本語, 大阪市, 国内会議マイクロカプセルの省資源，省エネ技術への応用
口頭発表（一般）
- 第11回 化学工学会 材料・界面部会 機能性微粒子分科会セミナー, 2009年11月, 日本語, 宮崎市, 国内会議低炭素社会の実現を目指した新規省エネ型脱炭酸プロセスの開発
口頭発表（一般）
- 第11回 化学工学会 材料・界面部会 機能性微粒子分科会セミナー, 2009年11月, 日本語, 宮崎市, 国内会議巨大孔を有するマイクロカプセルを利用した単分散小粒径マイクロバルーンの創製
口頭発表（一般）
- 化学工学会第41回秋季大会, 2009年09月, 日本語, 東広島市, 国内会議単分散な架橋メラミンサブミリカプセルの調製と膜厚制御に関する検討
口頭発表（一般）
- 17th International Symposium on Microencapsulation, 2009年09月, 英語, 名古屋, 国際会議Fabrication of Microballoon by Using Cross-Linked Polymelamine Microcapsules with Macroholes in their Shells
ポスター発表
- 5th Conference of the Aseanian Membrane Society, 2009年07月, 英語, 神戸市, 国際会議Preparation of Desirable Sized O/W Emulsion Droplet with SPG Membrane Emulsification Followed by Solvent Evaporation
ポスター発表
- 5th Conference of the Aseanian Membrane Society, 2009年07月, 英語, 神戸市, 国際会議Fundamental Investigation on Control of Porous Structure of Cross-Linked Polymelamine Microcapsule Membrane
ポスター発表
- 5th Conference of the Aseanian Membrane Society, 2009年07月, 英語, 神戸市, 国際会議Fabrication of Microcapsules with Gaseous and Aqueous Cores by Using Microcapsules with Controllable Holey Membrane
ポスター発表
- 5th Conference of the Aseanian Membrane Society, 2009年07月, 英語, 神戸市, 国際会議Development of Facilitated Transport Membranes for CO2 Separation at Elevated Temperatures
ポスター発表
- 5th Conference of the Aseanian Membrane Society, 2009年07月, 英語, 神戸市, 国際会議Application of Membrane Reactor with CO2-Selective Membrane to Water Gas Reaction for H2 Purification
ポスター発表
- 第11回化学工学会学生発表会(岡山大会), 2009年03月, 日本語, 化学工学会, 岡山市, 国内会議SPG膜乳化法と液中乾燥法によるエマルションの小粒径化とそのカプセル化に関する検討
口頭発表（一般）
- 化学工学会第74年会, 2009年03月, 日本語, 化学工学会, 横浜市, 国内会議CO2分離促進輸送膜の開発とメンブレンリアクターへの応用
口頭発表（一般）
- 日本化学会 第89春季年会, 2009年03月, 日本語, 日本化学会, 船橋市, 国内会議CO2選択透過促進輸送膜の開発とメンブレンリアクターを用いた水素製造プロセスへの展開
口頭発表（招待・特別）
- ISEC2008, 2008年09月, 英語, ISEC, Tucson, 国際会議Ultra-Fast Extraction of Ethyl Ester of Docosahexaenoic Acid with Silver Ion with Slug Flow
ポスター発表
- ISEC2008, 2008年09月, 英語, ISEC, Tucson, 国際会議Synergistic Extraction Mechanism of Samarium with Alkylphosphoric Acids as Main Extractant
ポスター発表
- 化学工学会第40回秋季大会, 2008年09月, 日本語, 化学工学会, 仙台市, 国内会議CO2分離型メンブレンCO変成器に用いるCO2分離促進輸送膜の開発
口頭発表（一般）
所属学協会
共同研究・競争的資金等の研究課題
- 日本学術振興会, 科学研究費助成事業 基盤研究(A), 基盤研究(A), 神戸大学, 2021年04月05日 - 2025年03月31日革新的水処理および創エネルギー技術の構築を目指した次世代型正浸透膜法の体系化
- 日本学術振興会, 科学研究費助成事業 基盤研究(B), 基盤研究(B), 神戸大学, 2021年04月01日 - 2024年03月31日精密合成高分子を用いた有機ネットワーク制御によるイオン液体含有ゲルの超高強度化
- 日本学術振興会, 科学研究費補助金／基盤研究(A), 基盤研究(A), 神戸大学, 2018年04月 - 2022年03月
1. 新規水チャネル型FO膜の創製 1-1．環状ペプチド分子集合体チャネル膜の創製（松山、吉岡、佐伯）：環状ペプチド分子集合体を導入した平面脂質二分子膜について、FO膜としての性能を確認するとともに、環状ペプチド内の官能基が水分子の拡散性や透過性に影響を及ぼすことを明らかにした。1-2．高分子液晶垂直配向チャネル膜の創製（彌田、稲田）：液晶性ブロックコポリマー（BCP）をFO膜として使うための複合膜化を検討した。新規購入の超音波ホモジナイザーで乳化したアルギン酸ナトリウム層（犠牲層）をガラス基板上に作製し、その上にBCP薄膜を製膜し、水中でBCP薄膜を犠牲層から剥離させ支持膜に重ねることで複合膜を作製する手法を開発した。1-3．革新的ロバスト無機ゼオライトFO膜の創製（松方）：ZSM-5膜を用いて、無機FO膜の正浸透膜特性を説明する透過モデルの検討を進めた。また、高い透過性と塩阻止率を両立する無機FO膜の設計指針を得る検討を継続した。1-4．計算機科学による高機能FO膜開発支援 (吉岡)：MD計算によりチャネル内表面特性が水および塩の拡散性に及ぼす影響を評価した。親水的なチャネル入り口が高透水性に寄与するが、疎水化されたチャネル内では塩の拡散性が大きくなることが明らかとなった。 2. 新規刺激応答性駆動溶液（DS）の創製（小野、高橋） 熱応答性イオン液体の温度依存的浸透圧発現機構の解析を基に、相図、粘度、浸透圧、相分離性をより最適化したイオン液体DSを設計した。また、イオン液体を利用した膜の調製と膜骨格にイオン液体構造を導入する技術についても開発した。 ３．FO膜透過とDS再生を含む連続システムによるFS評価とFO膜システムの実証（松山、神尾、中川） FO膜分離、DS連続再生、RO膜によるDS回収を一体化した小型連続FOシステムを構築し、海水淡水化を想定した連続運転条件検討を行った。
競争的資金
- 日本学術振興会, 学術研究助成基金助成金／基盤研究(C), 基盤研究(C), 神戸大学, 2018年04月 - 2021年03月, 研究代表者
イオン液体含有高強度ダブルネットワークゲル（DNイオンゲル）の高強度発現に寄与するネットワークの影響について検討した。本研究では、DNイオンゲルを高強度化するために、無機ネットワークと有機ネットワークの組成最適化を行い、高イオン液体含有量のDNイオンゲル膜を作製し、その機械的強度について評価を行った。また、無機ネットワークの内部破壊に伴うエネルギー散逸に寄与する無機粒子間相互作用に関する検討、および無機ネットワークの改良による強度向上についても検討を行った。 DNイオンゲルの優れた機械的強度は、ゲル内部に形成される無機ネットワークの内部破壊に伴うエネルギー散逸に起因する。本研究では、無機ネットワークと有機ネットワークの組成を種々変化させることによりDNイオンゲルを作製し、その機械的強度を評価した。その結果、TEOS/DMAAmが0.35 mol/molの最適組成比で調製したDNイオンゲルが従来に比べて約4倍の破壊エネルギー（1500 kJ/m3）を有することを明らかにした。また、TEOS/DMAAｍ比が0～0.35 mol/molまでの強度向上は無機ネットワーク組成増大に伴うエネルギー散逸量の増大に起因し、0.35 mol/mol以上での強度低下は有機ネットワークの分子量の低下に起因することを明らかにした。 また、無機ネットワークの内部破壊に伴うエネルギー散逸量に関して、水素結合性を有する双生イオン液体を含有するDNイオンゲルの力学特性を評価し、双性イオン液体による無機粒子間架橋により、DNイオンゲルの機械的強度は有意に増大することを明らかにした。この結果より、エネルギー散逸には無機粒子間の水素結合が主に寄与していることを明らかにした。加えて、無機ナノ粒子としてシリカとチタニアの複合粒子を用いることで、DNイオンゲルの機械的強度を有意に増大できることも明らかにした。
競争的資金
- 研究成果展開事業（マッチングプランナー プログラム）, 2016年, 研究代表者金属錯体系イオン液体を酸素キャリアとする酸素選択分離膜の創製
競争的資金
- 日本学術振興会, 科学研究費補助金／基盤研究(A), 基盤研究(A), 神戸大学, 2015年04月 - 2018年03月
本研究では、究極の省エネルギー水処理技術の開発に向けて、独創的かつ革新的なフォワードオスモシス（FO）膜及び駆動溶液（DS）の創製を行った。新規FO膜については、高透水性かつ高イオン阻止性を両立する生体機能模倣型ウォーターチャネルFO膜、荷電反発機能を有するミクロ相分離ハイドロゲルFO膜、及び耐溶剤性や高機械強度を有するロバスト無機FO膜の創製に成功した。新規な再生可能DSとしては、光応答性DS、及び二酸化炭素と温度応答性を有するDSの創製に成功した。
競争的資金
- 日本学術振興会, 学術研究助成基金助成金／若手研究(B), 若手研究(B), 神戸大学, 2015年04月 - 2017年03月, 研究代表者
固くて脆い1stネットワークと柔らかくて良く伸びる2ndネットワークから成る高強度ダブルネットワークを有するCO2反応性イオン液体含有高強度ゲルを創製した。ネットワーク組成や架橋度を調整したイオンゲル膜の圧縮破断応力は25MPa以上であり、優れた耐圧性を確認した。 高強度ゲル化により薄膜形成が可能となり、最薄で58ミクロンの薄膜調製に成功した。また、大量のイオン液体をゲル膜内に含有させることができ、優れたゲル内拡散性を付与することが出来た。イオン液体を約80wt%含有するゲル膜はCO2分圧10kPa、373Kにて10000barrer以上のCO2透過係数と150以上のCO2/N2選択性を示した。
競争的資金
- 科学技術振興機構, 研究成果最適展開支援プログラム フィージビリティスタディステージ 探索タイプ, 2015年, 研究代表者A-STEP「正浸透膜法による新規省エネ型海水淡水化システムに適用する高分子イオン液体の創製」
競争的資金
- 日本学術振興会, 学術研究助成基金助成金／挑戦的萌芽研究, 挑戦的萌芽研究, 神戸大学, 2014年04月 - 2016年03月
正浸透膜法による次世代型のゼロエネルギー海水淡水化の実現を目指し、高浸透圧の発現と磁性回収を両立する機能性微粒子の開発を行った。作製した磁性粒子は、10回以上の磁場回収試験後も良好な再分散性を示した。しかしながら、粒子分散液の浸透圧は海水の2/3程度であった。次いで開発したポリアミン型駆動溶液は、海水以上の高い浸透圧発現に成功し、さらには温度相転移による再生が可能であることを示した。これらFO膜の水輸送に関して理論的な解析を行った結果、FO膜の固有パラメータ(A、B、S値)を用いることにより、異なる駆動溶液の水流束を予測可能なモデル式を提案した。
競争的資金
- 研究成果最適展開支援プログラム フィージビリティスタディステージ 探索タイプ, 2014年, 研究代表者A-STEP「正浸透膜法による新規省エネ型海水淡水化システムに適用する高分子イオン液体の創製」
競争的資金
- 研究成果最適展開支援プログラム フィージビリティスタディステージ 探索タイプ, 2013年, 研究代表者A-STEP「高温・高圧下で機能する高強度CO2選択分離イオンゲル膜の創製」
競争的資金
- 日本学術振興会, 科学研究費補助金／基盤研究(B), 基盤研究(B), 神戸大学, 2012年04月 - 2015年03月
本研究では、エネルギーコストの極端に低い廃水・汚染水浄化濃縮技術の開発を目的として、自然エネルギー源である海水と汚染水間の浸透圧差を利用した自発的水透過を生じる革新的正浸透（FO）膜の創製を行った。新規FO膜としては、高い透水性能と高いイオン阻止能の双方を両立する膜を目指して、水のみを選択的に透過可能な生体模倣型ウォーターチャネル膜、並びに荷電反発機能を有するミクロ相分離ハイドロゲル膜の2つの方向から検討を行った。さらに、FO膜プロセスの実用化では避けることができない課題である膜ファウリングについても評価を行った。
競争的資金
- 日本学術振興会, 学術研究助成基金助成金／挑戦的萌芽研究, 挑戦的萌芽研究, 神戸大学, 2012年04月 - 2014年03月
本研究では新規な異型構造膜（中空糸膜および平膜）を新規に作製し、その有機物ファウリングやバイオファウリングに及ぼす影響を明らかとした。凹凸構造を有する中空糸膜を作製し、アルギン酸ナトリウムを用いたファウリング実験を行ったところ、このような凹凸構造の付与はファウリングの抑制に非常に効果的であることがわかった。またＰＤＭＳの鋳型を用い、異型構造として規則的なナノパターンを有するＰＥＳ平膜の作製を行った。Pillar, Hole, Lineの３種類のパターン形成について検討を行った。Pillar構造を有する膜において最も効果的にバイオフィルムの形成が抑制できることを見出した。
競争的資金
- 研究成果最適展開支援プログラム フィージビリティスタディステージ 探索タイプ, 2012年, 研究代表者A-STEP「高温・高圧下で機能する高強度CO2選択分離イオンゲル膜の創製」
競争的資金
- 科学研究費補助金／若手研究(B), 2011年, 研究代表者
競争的資金
- 研究成果最適展開支援プログラム フィージビリティスタディステージ 探索タイプ 拠点型, 2011年, 研究代表者A-STEP「天然ガス処理プラントへの適用を目指したCO2選択透過型高強度ダブルネットワーク高分子膜の創製」
競争的資金
- 日本学術振興会, 科学研究費助成事業 若手研究(B), 若手研究(B), 神戸大学, 2010年 - 2011年
イオン交換により金属を吸着捕集可能な微粒子を内包するマイクロカプセルの創製を試みた.マイクロカプセルへの微粒子の内包については,カプセル壁に多数の穴が開いたかご状マイクロカプセルをあらかじめ調製し,その内部で微粒子を生成させた.また,カプセル内で形成可能なことを確認した微粒子に対し,金属イオンと反応可能な官能基を有する高分子鎖を微粒子表面上に修飾することにより,微粒子に金属吸着能を付与した.調製した微粒子はメラミンを骨格とする既報のイオン交換樹脂と同等のイオン交換能を有することを確認した.
産業財産権
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ＣＯ２選択透過膜及びＣＯ２を混合ガスから分離する方法
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ＣＯ２選択透過膜、ＣＯ２を混合ガスから分離する方法、及び膜分離装置
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アミノ酸イオン性液体含有高分子ゲルおよびその製造方法
特願2013-155033, 2013年07月25日, 大学長, 特許6160862, 2017年06月23日特許権
ＣＯ２選択透過膜、ＣＯ２を混合ガスから分離する方法、及び膜分離装置（アメリカ）
14/377075, 2014年08月06日, 大学長, 9597632, 2017年03月21日特許権
イオン性液体含有相互侵入網目構造体およびその製造方法
特願2013-155032, 2013年07月25日, 大学長, 特許6103708, 2017年03月10日特許権