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YOSHIOKA TomohisaResearch Center for Membrane and Film TechnologyProfessor
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■ Award- 13 Nov. 2020 日本膜学会 膜シンポジウム2020, 優秀学生ポスター学生賞, 界面活性剤の分離精製における新規NF膜及びプロセス開発Japan society
- 26 Sep. 2020 The 18th Asian Pacific Confederation of Chemical Engineering Congress (APCChE 2019), Encouragement Award of Separation Process Division, Effect of composite membrane structure on performance of graphene oxide/metal oxide nanosheets composite membranesJapan society
- 26 Sep. 2020 The 18th Asian Pacific Confederation of Chemical Engineering Congress (APCChE 2019), Encouragement Award of Separation Process Division, Development of novel organic solvent resistant RO membraneJapan society
- 26 Sep. 2020 The 18th Asian Pacific Confederation of Chemical Engineering Congress (APCChE 2019), Excellent Student Award, Development of novel organic solvent resistant RO membraneJapan society
- 25 May 2020 分離技術会 年会2019, 学生賞, ニオブ酸化物ナノシート/酸化グラフェン複合型積層膜の作製とナノろ過特性の評価Japan society
- 25 May 2020 分離技術会 年会2019, 奨励賞, 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径分布評価Japan society
- 10 May 2020 日本膜学会 第42年会, 優秀学生ポスター学生賞, 有機キレート配位子を鋳型にしたチタニア-ジルコニア複合ナノろ過膜の有機溶剤透過・分画特性評価Japan society
- Mar. 2019 日本海水学会若手会第10回学生研究発表会, 優秀賞, 電気透析排水から2価陽イオンと2価陰イオンを選択分離する新規ナノ濾過膜の開発Japan society
- Oct. 2018 日本海水学会 第5回海水・生活・化学連携シンポジウム, 優秀ポスター賞, 正浸透膜法の駆動溶液に用いる温度応答性イオン液体の会合挙動に関する検討Japan society
- Sep. 2018 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Japan society
- May 2018 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Japan society
- Mar. 2018 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Japan society
- Mar. 2018 日本海水学会若手会第9回学生研究発表会, 奨励賞(鳴門塩業(株)賞), 電気透析排水から2価陽イオンと2価陰イオンを選択分離する新規ナノ濾過膜の開発Japan society
- Nov. 2017 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International society
- Sep. 2017 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Japan society
- 2016 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Japan society
- 2016 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Japan society
- 2016 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Japan society
- Elsevier BV, Jan. 2025, Separation and Purification Technology, 352, 128159 - 128159Scientific journal
- Elsevier BV, Jun. 2024, Separation and Purification Technology, 337, 126249 - 126249Scientific journal
- Elsevier BV, Mar. 2024, Journal of Membrane Science, 695, 122482 - 122482Scientific journal
- American Chemical Society (ACS), Feb. 2024, Industrial & Engineering Chemistry ResearchScientific journal
- Elsevier BV, Feb. 2024, Bioresource Technology, 393, 130144 - 130144Scientific journal
- American Chemical Society (ACS), Nov. 2023, Industrial & Engineering Chemistry Research, 62(46) (46), 19845 - 19854Scientific journal
- Elsevier BV, Nov. 2023, Water Research, 246, 120716 - 120716Scientific journal
- Elsevier BV, Nov. 2023, Desalination, 566, 116936 - 116936Scientific journal
- Elsevier BV, Nov. 2023, Journal of Membrane Science, 685, 121912 - 121912Scientific journal
- Elsevier BV, Oct. 2023, Chemical Engineering Journal, 474, 145671 - 145671Scientific journal
- Elsevier BV, Oct. 2023, Separation and Purification Technology, 322, 124091 - 124091Scientific journal
- Elsevier BV, Sep. 2023, Separation and Purification Technology, 320, 124150 - 124150Scientific journal
- American Chemical Society (ACS), Aug. 2023, Industrial & Engineering Chemistry ResearchScientific journal
- Elsevier BV, Aug. 2023, Journal of Molecular Liquids, 383, 122145 - 122145Scientific journal
- Elsevier BV, Jun. 2023, Separation and Purification Technology, 315, 123576 - 123576Scientific journal
- Laminar membranes comprising graphene oxide (GO) and metal-organic framework (MOF) nanosheets benefit from the regular in-plane pores of MOF nanosheets and thus can support rapid water transport. However, the restacking and agglomeration of MOF nanosheets during typical vacuum filtration disturb the stacking of GO sheets, thus deteriorating the membrane selectivity. Therefore, to fabricate highly permeable MOF nanosheets/reduced GO (rGO) membranes, a two-step method is applied. First, using a facile solvothermal method, ZnO nanoparticles are introduced into the rGO laminate to stabilize and enlarge the interlayer spacing. Subsequently, the ZnO/rGO membrane is immersed in a solution of tetrakis(4-carboxyphenyl)porphyrin (H2 TCPP) to realize in situ transformation of ZnO into Zn-TCPP in the confined interlayer space of rGO. By optimizing the transformation time and mass loading of ZnO, the obtained Zn-TCPP/rGO laminar membrane exhibits preferential orientation of Zn-TCPP, which reduces the pathway tortuosity for small molecules. As a result, the composite membrane achieves a high water permeance of 19.0 L m-2 h-1 bar-1 and high anionic dye rejection (>99% for methyl blue).Apr. 2023, Small (Weinheim an der Bergstrasse, Germany), e2300672, English, International magazineScientific journal
- Wiley, Mar. 2023, Journal of Applied Polymer Science, 140(22) (22)Scientific journal
- Mar. 2023, Process Safety and Environmental Protection, 171, 555 - 560Scientific journal
- Nanochannels in laminated graphene oxide nanosheets featuring confined mass transport have attracted interest in multiple research fields. The use of nanochannels for reverse osmosis is a prospect for developing next-generation synthetic water-treatment membranes. The robustness of nanochannels under high-pressure conditions is vital for effectively separating water and ions with sub-nanometer precision. Although several strategies have been developed to address this issue, the inconsistent response of nanochannels to external conditions used in membrane processes has rarely been investigated. In this study, we develop a robust interlayer channel by balancing the associated chemistry and confinement stability to exclude salt solutes. We build a series of membrane nanochannels with similar physical dimensions but different channel functionalities and reveal their divergent deformation behaviors under different conditions. The deformation constraint effectively endows the nanochannel with rapid deformation recovery and excellent ion exclusion performance under variable pressure conditions. This study can help understand the deformation behavior of two-dimensional nanochannels in pressure-driven membrane processes and develop strategies for the corresponding deformation constraints regarding the pore wall and interior.Feb. 2023, Nature communications, 14(1) (1), 1016 - 1016, English, International magazineScientific journal
- Elsevier BV, Feb. 2023, Water Research, 230, 119567 - 119567Scientific journal
- Elsevier BV, Jan. 2023, Journal of Membrane Science, 665, 121122 - 121122Scientific journal
- Dec. 2022, MEMBRANES, 12(12) (12), EnglishScientific journal
- Elsevier BV, Dec. 2022, Journal of Molecular Liquids, 367, 120441 - 120441Scientific journal
- Elsevier BV, Dec. 2022, Journal of Membrane Science, 663, 121032 - 121032Scientific journal
- American Chemical Society (ACS), Oct. 2022, Industrial & Engineering Chemistry Research, 61(41) (41), 15345 - 15354Scientific journal
- Elsevier BV, Oct. 2022, Desalination, 540, 115991 - 115991Scientific journal
- American Chemical Society (ACS), Sep. 2022, ACS Applied Nano MaterialsScientific journal
- Sep. 2022, ACS Omega, English[Refereed]Scientific journal
- Sep. 2022, Journal of Membrane Science, 657Scientific journal
- Elsevier BV, Sep. 2022, Separation and Purification Technology, 297, 121458 - 121458Scientific journal
- Aug. 2022, Desalination, 536Scientific journal
- Elsevier BV, Aug. 2022, Chemical Engineering Journal, 442, 136254 - 136254Scientific journal
- Jul. 2022, Journal of Applied Polymer Science, 139(26) (26)Scientific journal
- Jul. 2022, Journal of Membrane Science, 653Scientific journal
- Elsevier BV, Jul. 2022, Journal of Membrane Science, 120861 - 120861Scientific journal
- Jun. 2022, Industrial and Engineering Chemistry Research, 61(21) (21), 7381 - 7396Scientific journal
- American Chemical Society (ACS), Apr. 2022, Industrial & Engineering Chemistry Research, 61(13) (13), 4648 - 4658Scientific journal
- Mar. 2022, Journal of Membrane Science, 646Scientific journal
- Elsevier {BV}, Feb. 2022, Journal of Molecular Liquids, 347, 118366 - 118366, EnglishScientific journal
- Elsevier BV, 2022, Materials Today: Proceedings, 65, 3101 - 3108, EnglishScientific journal
- Organic solvent reverse osmosis (OSRO) is currently considered as an energy-efficient membrane technology for separation of organic liquid mixtures.Royal Society of Chemistry (RSC), 2022, Journal of Materials Chemistry AScientific journal
- Dec. 2021, Journal of Membrane Science, 640Scientific journal
- Dec. 2021, MEMBRANES, 11(12) (12), EnglishScientific journal
- Dec. 2021, Separation and Purification Technology, 276Scientific journal
- Nov. 2021, Journal of Applied Polymer Science, 138(44) (44)Scientific journal
- Nov. 2021, Separation and Purification Technology, 275Scientific journal
- Nov. 2021, JOURNAL OF MATERIALS CHEMISTRY A, 9(46) (46), 26159 - 26171, EnglishScientific journal
- Reverse osmosis (RO) is a widely used energy-efficient separation technology for water treatment. Polyamide (PA) membranes are the conventional choice for this process. Fouling is a serious problem for RO separation. This issue leads to significant decreases in the water permeability of PA membranes, and it has yet to be fully elucidated. In particular, the fouling behavior of a nonionic substance on the negatively charged surface of a PA membrane in an aqueous environment has not been previously studied. In this work, the mechanisms of nonionic substances such as polyoxyethylene octyl ether (PE5) and maltose (Mal) were investigated using molecular dynamics (MD) simulations. In a PA membrane in which the carboxyl group was not dissociated, the hydrophobic portion of the membrane was exposed due to the localization of water molecules around the carboxyl groups in the PA membrane. This caused hydrophobic interaction with the hydrophobic groups of PE5. In the case of an amine-modified PA membrane containing no carboxyl groups, water was not localized around the functional group, and the water orientation of the polyamide surface was also low. Due to this membrane property, the presence of stabilized water around PE5 reduced the number of hydrophobic interactions. In similar manner, a PA membrane with a slightly dissociated carboxyl group was hydrophilic, which reduced the PE5 adsorption. The presence of many dissociated carboxyl groups, however, enhanced the adsorption of PE5 due to the increase in interactions between the dissociated carboxyl groups and the hydrophilic groups of PE5. Therefore, PE5 exhibited an amphipathic adsorption wherein both hydrophilic and hydrophobic groups contributed to adsorption onto the PA membrane. Mal, on the other hand, was highly stable in every aqueous environment independent of the state of the functional groups of the PA membrane, and was not easily affected by the properties of the PA membrane.Sep. 2021, Physical chemistry chemical physics : PCCP, English, International magazineScientific journal
- Sep. 2021, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60(34) (34), 12698 - 12708, EnglishScientific journal
- Sep. 2021, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60(34) (34), 12640 - 12649, EnglishScientific journal
- Sep. 2021, CHEMICAL ENGINEERING JOURNAL, 420, EnglishScientific journal
- Aug. 2021, Nano Letters, 21(15) (15), 6525 - 6532Scientific journal
- Elsevier BV, Aug. 2021, Journal of Membrane Science, 631, 119337 - 119337Scientific journal
- Elsevier BV, Aug. 2021, Journal of Membrane Science, 631, 119336 - 119336Scientific journal
- Jul. 2021, Journal of Membrane Science, 630Scientific journal
- American Chemical Society (ACS), Mar. 2021, ACS Applied Nano MaterialsScientific journal
- THE MEMBRANE SOCIETY OF JAPAN, 2021, MEMBRANE, 46(2) (2), 98 - 111, Japanese
- 2021, Membranes, 11(9) (9)Scientific journal
- 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.Dec. 2020, Membranes, 10(12) (12), English, International magazineScientific journal
- Nov. 2020, JOURNAL OF MEMBRANE SCIENCE, 614, EnglishScientific journal
- Nov. 2020, DESALINATION, 493, EnglishScientific journal
- Elsevier BV, Nov. 2020, Separation and Purification Technology, 251, 117400 - 117400Scientific journal
- In this study, the characteristics of different types of nanosheet membranes were reviewed in order to determine which possessed the optimum propensity for antifouling during water purification. Despite the tremendous amount of attention that nanosheets have received in recent years, their use to render membranes that are resistant to fouling has seldom been investigated. This work is the first to summarize the abilities of nanosheet membranes to alleviate the effect of organic and inorganic foulants during water treatment. In contrast to other publications, single nanosheets, or in combination with other nanomaterials, were considered to be nanostructures. Herein, a broad range of materials beyond graphene-based nanomaterials is discussed. The types of nanohybrid membranes considered in the present work include conventional mixed matrix membranes, stacked membranes, and thin-film nanocomposite membranes. These membranes combine the benefits of both inorganic and organic materials, and their respective drawbacks are addressed herein. The antifouling strategies of nanohybrid membranes were divided into passive and active categories. Nanosheets were employed in order to induce fouling resistance via increased hydrophilicity and photocatalysis. The antifouling properties that are displayed by two-dimensional (2D) nanocomposite membranes also are examined.MDPI AG, Oct. 2020, Membranes, 10(10) (10), 295 - 295Scientific journal
- In this study, the characteristics of different types of nanosheet membranes were reviewed in order to determine which possessed the optimum propensity for antifouling during water purification. Despite the tremendous amount of attention that nanosheets have received in recent years, their use to render membranes that are resistant to fouling has seldom been investigated. This work is the first to summarize the abilities of nanosheet membranes to alleviate the effect of organic and inorganic foulants during water treatment. In contrast to other publications, single nanosheets, or in combination with other nanomaterials, were considered to be nanostructures. Herein, a broad range of materials beyond graphene-based nanomaterials is discussed. The types of nanohybrid membranes considered in the present work include conventional mixed matrix membranes, stacked membranes, and thin-film nanocomposite membranes. These membranes combine the benefits of both inorganic and organic materials, and their respective drawbacks are addressed herein. The antifouling strategies of nanohybrid membranes were divided into passive and active categories. Nanosheets were employed in order to induce fouling resistance via increased hydrophilicity and photocatalysis. The antifouling properties that are displayed by two-dimensional (2D) nanocomposite membranes also are examined.Oct. 2020, Membranes, 10(10) (10), English, International magazineScientific journal
- Oct. 2020, Journal of Membrane Science, 612Scientific journal
- Oct. 2020, JOURNAL OF MEMBRANE SCIENCE, 612, EnglishScientific journal
- Elsevier BV, Oct. 2020, Chemical Engineering Research and Design, 162, 117 - 124Scientific journal
- Elsevier BV, Oct. 2020, Separation and Purification Technology, 248, 117018 - 117018[Refereed]Scientific journal
- Aug. 2020, IEEE Transactions on Plasma Science, 48(8) (8), 2759 - 2767Scientific journal
- Aug. 2020, ACS APPLIED MATERIALS & INTERFACES, 12(34) (34), 38662 - 38673, EnglishScientific journal
- May 2020, JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 110, 173 - 181, EnglishScientific journal
- May 2020, SEPARATION AND PURIFICATION TECHNOLOGY, 239, English[Refereed]Scientific journal
- Mar. 2020, JOURNAL OF MEMBRANE SCIENCE, 597, English[Refereed]Scientific journal
- Feb. 2020, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 59(5) (5), 2083 - 2092, English[Refereed]Scientific journal
- Feb. 2020, JOURNAL OF MEMBRANE SCIENCE, 595, English[Refereed]Scientific journal
- Feb. 2020, JOURNAL OF MEMBRANE SCIENCE, 595, English[Refereed]Scientific journal
- Separation of organic solvent by membrane is an emerging technology for the purification or separation of organic solvents. In this study, game changing OHF (Organic solvent Hyper Filtration) membranes and their applications are under development to realize the replacement from energy–consuming distillation to energy–efficient membrane process. Nano filtration (NF)–type hollow fiber OHF membrane was developed by TIPS (Thermally–Induced Phase Separation) method using solvent–resistant polymers such as nylon 6. The prepared membranes showed methanol (MeOH) permeability of > 2 LMH (L・m–2・h–1) with molecular weight cut–off (MWCO) of about 1,000 and stability for >1 month. Reverse osmosis (RO)–type organic composite OHF membrane was developed by the interfacial polymerization method. A highly cross-linked polyamide layer was prepared on a solvent resistant support membrane. The membrane showed selectivity for MeOH against toluene (TOL) in separation test using MeOH/TOL mixture. Membrane performance was Rej.= 65% Flux = 16 LMH at 40 bar. The stability was > 2 weeks. NF–type TiO2/ZrO2 ceramic composite OHF membrane was developed using organic chelating ligands (OCL) as a pore size–fixing spacer. The membrane showed high permeability for organic solvents such as hexane (26 LMH) and MeOH (25 LMH) at 6 bar with MWCO of about 1,000 and stability of > 1 week. NF–type inorganic nanosheet OHF membrane was developed by laminating nanosheets of niobate and/or graphene oxide onto solvent resistant support membrane using chemical binders. The membrane showed relatively high MeOH permeability (11 LMH at 2 bar) and good rejection against organic dyes such as Evans blue (Mw : 960.8) with 87%.THE MEMBRANE SOCIETY OF JAPAN, 2020, MEMBRANE, 45(4) (4), 165 - 170, Japanese
- Dec. 2019, JOURNAL OF MEMBRANE SCIENCE, 591, English[Refereed]Scientific journal
- Nov. 2019, JOURNAL OF MATERIALS CHEMISTRY A, 7(42) (42), 24569 - 24582, English[Refereed]Scientific journal
- Nov. 2019, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 58(47) (47), 21691 - 21699, English[Refereed]Scientific journal
- Oct. 2019, MEMBRANES, 9(10) (10), English[Refereed]Scientific journal
- Aug. 2019, SEPARATION AND PURIFICATION TECHNOLOGY, 220, 259 - 267, English[Refereed]Scientific journal
- Aug. 2019, JOURNAL OF MEMBRANE SCIENCE, 583, 49 - 58, English[Refereed]Scientific journal
- Aug. 2019, JOURNAL OF MEMBRANE SCIENCE, 584, 161 - 172, English[Refereed]Scientific journal
- Jul. 2019, SEPARATION AND PURIFICATION TECHNOLOGY, 219, 222 - 229, English[Refereed]Scientific journal
- Jul. 2019, MEMBRANE, 44(4) (4), 192 - 198, JapaneseMolecular simulation of adsorption behavior of silica nanoparticle onto a polymeric membrane surface in water[Refereed]Scientific journal
- Jul. 2019, JOURNAL OF MEMBRANE SCIENCE, 582, 111 - 119, English[Refereed]Scientific journal
- May 2019, ACS APPLIED MATERIALS & INTERFACES, 11(20) (20), 18782 - 18796, English[Refereed]Scientific journal
- May 2019, ACS APPLIED MATERIALS & INTERFACES, 11(21) (21), 19462 - 19471, English[Refereed]Scientific journal
- Apr. 2019, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 58(16) (16), 6721 - 6729, English[Refereed]Scientific journal
- Dec. 2018, JOURNAL OF MATERIALS CHEMISTRY A, 6(47) (47), 24641 - 24650, English[Refereed]Scientific journal
- Dec. 2018, MEMBRANES, 8(4) (4), 127, English[Refereed]Scientific journal
- Dec. 2018, MEMBRANES, 8(4) (4), 130, English[Refereed]Scientific journal
- Nov. 2018, JOURNAL OF MEMBRANE SCIENCE, 566, 15 - 24, English[Refereed]Scientific journal
- May 2018, SEN-I GAKKAISHI, 74(5) (5), 186 - 192, JapaneseFabrication of Innovative Separation Membranes in Kobe University[Refereed]Scientific journal
- Feb. 2018, JOURNAL OF PHYSICAL CHEMISTRY B, 122(6) (6), 1919 - 1928, English[Refereed]Scientific journal
- 日本膜学会, 2018, 膜, 43(6) (6), 268 - 268, Japanese
- Jan. 2018, JOURNAL OF MEMBRANE SCIENCE, 545, 229 - 239, English[Refereed]Scientific journal
- The Membrane Society of Japan, Jan. 2018, Membrane, 42(6) (6), 250 - 254, English[Refereed]Scientific journal
- Dec. 2017, DESALINATION, 424, 85 - 94, English[Refereed]Scientific journal
- Sep. 2017, JOURNAL OF MEMBRANE SCIENCE, 537, 101 - 110, English[Refereed]Scientific journal
- Jul. 2017, CHEMICAL COMMUNICATIONS, 53(56) (56), 7929 - 7932, English[Refereed]Scientific journal
- May 2017, JOURNAL OF MEMBRANE SCIENCE, 530, 166 - 175, English[Refereed]Scientific journal
- Feb. 2017, JOURNAL OF MEMBRANE SCIENCE, 524, 644 - 651, English[Refereed]Scientific journal
- 2017, RSC ADVANCES, 7(12) (12), 7150 - 7157, English[Refereed]Scientific journal
- Dec. 2016, JOURNAL OF PHYSICAL CHEMISTRY C, 120(49) (49), 27734 - 27745, English[Refereed]Scientific journal
- Aug. 2016, JOURNAL OF MEMBRANE SCIENCE, 511, 219 - 227, English[Refereed]Scientific journal
- Jul. 2016, JOURNAL OF THE JAPAN PETROLEUM INSTITUTE, 59(4) (4), 140 - 148, English[Refereed]Scientific journal
- Apr. 2016, CHEMNANOMAT, 2(4) (4), 264 - 267, English[Refereed]Scientific journal
- 2016, RSC ADVANCES, 6(64) (64), 59045 - 59049, English[Refereed]Scientific journal
- Jan. 2016, JOURNAL OF MEMBRANE SCIENCE, 498, 336 - 344, English[Refereed]Scientific journal
- Nov. 2015, JOURNAL OF MEMBRANE SCIENCE, 493, 664 - 672, English[Refereed]Scientific journal
- Sep. 2015, JOURNAL OF MEMBRANE SCIENCE, 489, 11 - 19, English[Refereed]Scientific journal
- Jul. 2015, AICHE JOURNAL, 61(7) (7), 2268 - 2279, English[Refereed]Scientific journal
- May 2015, AICHE JOURNAL, 61(5) (5), 1628 - 1638, English[Refereed]Scientific journal
- 2015, CHEMICAL COMMUNICATIONS, 51(13) (13), 2551 - 2554, English[Refereed]Scientific journal
- 2015, CHEMICAL COMMUNICATIONS, 51(49) (49), 9932 - 9935, English[Refereed]Scientific journal
- Dec. 2014, JOURNAL OF MEMBRANE SCIENCE, 472, 19 - 28, English[Refereed]Scientific journal
- Dec. 2014, AICHE JOURNAL, 60(12) (12), 4199 - 4210, English[Refereed]Scientific journal
- Sep. 2014, JOURNAL OF MEMBRANE SCIENCE, 466, 246 - 252, English[Refereed]Scientific journal
- Sep. 2014, JOURNAL OF PHYSICAL CHEMISTRY C, 118(35) (35), 20323 - 20331, English[Refereed]Scientific journal
- Aug. 2014, JOURNAL OF MEMBRANE SCIENCE, 464, 140 - 148, English[Refereed]Scientific journal
- Jul. 2014, JOURNAL OF MEMBRANE SCIENCE, 461, 96 - 105, English[Refereed]Scientific journal
- Jun. 2014, ACS APPLIED MATERIALS & INTERFACES, 6(12) (12), 9357 - 9364, English[Refereed]Scientific journal
- Apr. 2014, JOURNAL OF MEMBRANE SCIENCE, 455, 375 - 383, English[Refereed]Scientific journal
- Apr. 2014, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 53(14) (14), 6113 - 6120, English[Refereed]Scientific journal
- Feb. 2014, SEPARATION AND PURIFICATION TECHNOLOGY, 122, 440 - 448, English[Refereed]Scientific journal
- 2014, JOURNAL OF MATERIALS CHEMISTRY A, 2(3) (3), 672 - 680, English[Refereed]Scientific journal
- Jan. 2014, SEPARATION AND PURIFICATION TECHNOLOGY, 121, 13 - 19, English[Refereed]Scientific journal
- 2014, RSC ADVANCES, 4(24) (24), 12404 - 12407, English[Refereed]Scientific journal
- 2014, JOURNAL OF MATERIALS CHEMISTRY A, 2(24) (24), 9185 - 9192, English[Refereed]Scientific journal
- 2014, RSC ADVANCES, 4(45) (45), 23759 - 23769, English[Refereed]Scientific journal
- Nov. 2013, JOURNAL OF MEMBRANE SCIENCE, 446, 504 - 512, English[Refereed]Scientific journal
- Nov. 2013, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(35) (35), 15302 - 15306, English[Refereed]Scientific journal
- Oct. 2013, MATERIALS LETTERS, 109, 130 - 133, English[Refereed]Scientific journal
- Sep. 2013, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 96(9) (9), 2950 - 2957, English[Refereed]Scientific journal
- Sep. 2013, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 52(37) (37), 13325 - 13332, English[Refereed]Scientific journal
- Aug. 2013, JOURNAL OF MEMBRANE SCIENCE, 441, 45 - 53, English[Refereed]Scientific journal
- Aug. 2013, JOURNAL OF MEMBRANE SCIENCE, 441, 120 - 128, English[Refereed]Scientific journal
- Jul. 2013, JOURNAL OF MEMBRANE SCIENCE, 439, 78 - 86, English[Refereed]Scientific journal
- Jul. 2013, DESALINATION AND WATER TREATMENT, 51(25-27) (25-27), 5149 - 5154, English[Refereed]Scientific journal
- Jul. 2013, DESALINATION AND WATER TREATMENT, 51(25-27) (25-27), 5248 - 5253, English[Refereed]Scientific journal
- Jul. 2013, DESALINATION AND WATER TREATMENT, 51(25-27) (25-27), 5231 - 5236, English[Refereed]Scientific journal
- Jul. 2013, ACS APPLIED MATERIALS & INTERFACES, 5(13) (13), 6147 - 6154, English[Refereed]Scientific journal
- Jun. 2013, AICHE JOURNAL, 59(6) (6), 2179 - 2194, English[Refereed]Scientific journal
- Apr. 2013, AICHE JOURNAL, 59(4) (4), 1298 - 1307, English[Refereed]Scientific journal
- 日本膜学会, 2013, 膜, 38(1) (1), 39 - 49, Japanese
- Jan. 2013, AICHE JOURNAL, 59(1) (1), 168 - 179, English[Refereed]Scientific journal
- 2013, RSC ADVANCES, 3(30) (30), 12080 - 12083, English[Refereed]Scientific journal
- 2013, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 46(10) (10), 659 - 671, English[Refereed]Scientific journal
- Dec. 2012, JOURNAL OF MEMBRANE SCIENCE, 421, 25 - 31, English[Refereed]Scientific journal
- Dec. 2012, CHEMISTRY LETTERS, 41(12) (12), 1663 - 1665, English[Refereed]Scientific journal
- Oct. 2012, JOURNAL OF MEMBRANE SCIENCE, 415, 478 - 485, English[Refereed]Scientific journal
- Oct. 2012, JOURNAL OF MEMBRANE SCIENCE, 415, 810 - 815, English[Refereed]Scientific journal
- Sep. 2012, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37(17) (17), 12105 - 12113, English[Refereed]Scientific journal
- Jan. 2012, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 51(2) (2), 944 - 953, English[Refereed]Scientific journal
- Dec. 2011, LANGMUIR, 27(23) (23), 13996 - 13999, English[Refereed]Scientific journal
- Nov. 2011, JOURNAL OF MEMBRANE SCIENCE, 384(1-2) (1-2), 149 - 156, English[Refereed]Scientific journal
- Oct. 2011, AICHE JOURNAL, 57(10) (10), 2755 - 2765, English[Refereed]Scientific journal
- Sep. 2011, JOURNAL OF MEMBRANE SCIENCE, 381(1-2) (1-2), 90 - 101, English[Refereed]Scientific journal
- Aug. 2011, AICHE JOURNAL, 57(8) (8), 2079 - 2089, English[Refereed]Scientific journal
- Mar. 2011, AICHE JOURNAL, 57(3) (3), 618 - 629, English[Refereed]Scientific journal
- Jan. 2011, JOURNAL OF MEMBRANE SCIENCE, 366(1-2) (1-2), 382 - 388, English[Refereed]Scientific journal
- 2011, SEPARATION SCIENCE AND TECHNOLOGY, 46(8) (8), 1224 - 1230, English[Refereed]Scientific journal
- 2011, CHEMICAL COMMUNICATIONS, 47(28) (28), 8070 - 8072, English[Refereed]Scientific journal
- Jul. 2010, LANGMUIR, 26(13) (13), 10897 - 10905, English[Refereed]Scientific journal
- May 2010, AICHE JOURNAL, 56(5) (5), 1204 - 1212, English[Refereed]Scientific journal
- May 2010, DESALINATION AND WATER TREATMENT, 17(1-3) (1-3), 1 - 1, English[Refereed]
- May 2010, DESALINATION AND WATER TREATMENT, 17(1-3) (1-3), 106 - 112, English[Refereed]Scientific journal
- May 2010, DESALINATION AND WATER TREATMENT, 17(1-3) (1-3), 120 - 126, English[Refereed]Scientific journal
- Mar. 2010, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 239, EnglishSol-gel derived organic-inorganic silica membranes with controlled silica network size[Refereed]
- Feb. 2010, JOURNAL OF MEMBRANE SCIENCE, 348(1-2) (1-2), 310 - 318, English[Refereed]Scientific journal
- The Society of Chemical Engineers, Japan, 2010, 化学工学会 研究発表講演要旨集, 2010, 935 - 935
- 2010, Desalination and Water Treatment, 17(1-3) (1-3), 1[Refereed]
- 2010, ADVANCES IN BIOCERAMICS AND POROUS CERAMICS II, 30(6) (6), 229 - 239, EnglishDESIGN OF SILICA NETWORKS USING ORGANIC-INORGANIC HYBRID ALKOXIDES FOR HIGHLY PERMEABLE HYDROGEN SEPARATION MEMBRANES[Refereed]International conference proceedings
- 2010, KAGAKU KOGAKU RONBUNSHU, 36(3) (3), 174 - 180, Japanese[Refereed]Scientific journal
- 2010, KAGAKU KOGAKU RONBUNSHU, 36(5) (5), 472 - 479, Japanese[Refereed]Scientific journal
- 2010, CHEMICAL COMMUNICATIONS, 46(33) (33), 6171 - 6173, English[Refereed]Scientific journal
- 2010, CHEMICAL COMMUNICATIONS, 46(48) (48), 9140 - 9142, English[Refereed]Scientific journal
- Jan. 2009, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 131(2) (2), 414 - +, English[Refereed]Scientific journal
- Dec. 2008, DESALINATION, 233(1-3) (1-3), 1 - 9, English[Refereed]Scientific journal
- Dec. 2008, DESALINATION, 233(1-3) (1-3), 333 - 341, English[Refereed]Scientific journal
- Sep. 2008, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 91(9) (9), 2975 - 2981, English[Refereed]Scientific journal
- May 2008, JOURNAL OF MEMBRANE SCIENCE, 316(1-2) (1-2), 53 - 62, English[Refereed]Scientific journal
- Apr. 2007, JOURNAL OF MEMBRANE SCIENCE, 293(1-2) (1-2), 81 - 93, English[Refereed]Scientific journal
- Gas permeation properties through silica based metal-doped microporous membranes prepared by the sol-gel method were investigated. In order to control pore size and affinity with permeating gas molecules, especially with CO2 for CO2/N2 gas separation membranes, nitrates of Ni, Al, Mg metals, and ammonium salt of vanadium were added to silica colloidal solutions. The molar ratio of additives, Si/M was 9/1. CO2 and N2 adsorption measurements on pure silica and metal-doped silica powder samples were conducted to estimate the affinity of the membrane materials with those gases. Pure silica and Ni-doped silica showed the largest amount of adsorbed CO2. Ni-doped silica membranes showed no attract difference from a typical pure silica membrane for temperature dependencies of gas permeance, while Mg-doped silica membranes might have relatively smaller effective pores for CO2/N2 separation and the value of permeance ratio of 57 could be obtained at 50 ℃. On the other hand, V-doped silica membranes had larger pores and N2 gas permeance increased with decreasing temperature, which would result in lower performance of CO2 separation. Concerning the Al-doped silica membranes, the affinity with CO2 decreased by addition of Al. In addition, activation energy of He and H2 for permeation on Al-doped membranes became greater, which suggested densification of silica network because of Al dispersion in the dense phase.THE MEMBRANE SOCIETY OF JAPAN, Jan. 2007, MEMBRANE, 32(1) (1), 45 - 53, Japanese[Refereed]Scientific journal
- Nov. 2006, JOURNAL OF MEMBRANE SCIENCE, 284(1-2) (1-2), 205 - 213, English[Refereed]Scientific journal
- Sep. 2006, JOURNAL OF MEMBRANE SCIENCE, 280(1-2) (1-2), 156 - 162, English[Refereed]Scientific journal
- Mar. 2006, APPLIED CATALYSIS A-GENERAL, 302(1) (1), 78 - 85, English[Refereed]Scientific journal
- Feb. 2006, AICHE JOURNAL, 52(2) (2), 522 - 531, English[Refereed]Scientific journal
- Jan. 2006, KAGAKU KOGAKU RONBUNSHU, 32(1) (1), 11 - 17, JapaneseTransport properties of condensable and non-condensable gas mixtures through microporous silica membranes studied with molecular dynamics simulation[Refereed]Scientific journal
- Mar. 2005, KAGAKU KOGAKU RONBUNSHU, 31(2) (2), 108 - 114, Japanese[Refereed]Scientific journal
- Nov. 2004, AICHE JOURNAL, 50(11) (11), 2794 - 2805, English[Refereed]Scientific journal
- May 2004, KAGAKU KOGAKU RONBUNSHU, 30(3) (3), 346 - 352, Japanese[Refereed]Scientific journal
- May 2004, AICHE JOURNAL, 50(5) (5), 1080 - 1087, English[Refereed]Scientific journal
- 2004, Transactions of the Materials Research Society of Japan, 29(7) (7), 3247 - 3250Transport Properties of Condensable Gases through Microporous Silica Membranes[Refereed]
- Jan. 2004, MOLECULAR PHYSICS, 102(2) (2), 191 - 202, English[Refereed]Scientific journal
- 2004, Transactions of the Materials Research Society of Japan, 29(7) (7), 3283 - 3286Effect of Molecular Interactions on Gas Permeation Properties through a Microporous Silica Membrane Studied with Molecular Dynamics Simulation
- Sep. 2003, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 36(9) (9), 1063 - 1069, English[Refereed]Scientific journal
- Jul. 2003, SEPARATION AND PURIFICATION TECHNOLOGY, 32(1-3) (1-3), 105 - 109, English[Refereed]Scientific journal
- Jul. 2003, SEPARATION AND PURIFICATION TECHNOLOGY, 32(1-3) (1-3), 23 - 27, English[Refereed]Scientific journal
- Jul. 2003, CATALYSIS TODAY, 82(1-4) (1-4), 41 - 48, English[Refereed]Scientific journal
- Jul. 2003, SEPARATION AND PURIFICATION TECHNOLOGY, 32(1-3) (1-3), 231 - 237, English[Refereed]Scientific journal
- May 2003, KAGAKU KOGAKU RONBUNSHU, 29(3) (3), 427 - 431, JapaneseGas permeation properties and methylation of toluene by MFI zeolite membranes with different Si/Al ratios[Refereed]Scientific journal
- 2003, MEMBRANES-PREPARATION, PROPERTIES AND APPLICATIONS, 752, 97 - 102, EnglishOrganic/inorganic nanohybrid membranes for nanofiltration of nonaqueous solutions[Refereed]International conference proceedings
- 2003, MEMBRANES-PREPARATION, PROPERTIES AND APPLICATIONS, 752, 103 - 108, EnglishStructurally composite membranes of titanium oxide and titanium phosphorus oxide for proton conduction at intermediate temperatures[Refereed]International conference proceedings
- Sep. 2002, DESALINATION, 147(1-3) (1-3), 213 - 216, English[Refereed]Scientific journal
- Jul. 2002, MICROPOROUS AND MESOPOROUS MATERIALS, 54(3) (3), 257 - 268, English[Refereed]Scientific journal
- Oct. 2001, SEPARATION AND PURIFICATION TECHNOLOGY, 25(1-3) (1-3), 307 - 314, English[Refereed]Scientific journal
- Oct. 2001, SEPARATION AND PURIFICATION TECHNOLOGY, 25(1-3) (1-3), 441 - 449, English[Refereed]Scientific journal
- Sep. 2001, AICHE JOURNAL, 47(9) (9), 2052 - 2063, English[Refereed]Scientific journal
- Jun. 2001, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 34(6) (6), 844 - 847, English[Refereed]Scientific journal
- May 2001, JOURNAL OF MEMBRANE SCIENCE, 186(2) (2), 257 - 265, English[Refereed]Scientific journal
- Apr. 2001, JOURNAL OF MEMBRANE SCIENCE, 185(2) (2), 253 - 261, English[Refereed]Scientific journal
- 2001, SEPARATION SCIENCE AND TECHNOLOGY, 36(16) (16), 3721 - 3736, English[Refereed]Scientific journal
- Aug. 2000, LANGMUIR, 16(16) (16), 6622 - 6627, English[Refereed]Scientific journal
- Aug. 2000, JOURNAL OF COLLOID AND INTERFACE SCIENCE, 228(2) (2), 292 - 296, English[Refereed]Scientific journal
- May 2000, LANGMUIR, 16(9) (9), 4293 - 4299, English[Refereed]Scientific journal
- Mar. 2000, AICHE JOURNAL, 46(3) (3), 565 - 574, English[Refereed]Scientific journal
- Feb. 2000, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 33(1) (1), 103 - 112, English[Refereed]Scientific journal
- May 1998, Proceedings of Fundamentals of Adsorption 6, 249 - 254Molecular Dynamics Study on Condensation in Cylindrical Nano-pores -Modeling and Verification-[Refereed]International conference proceedings
- May 1998, Proceedings of Fundamentals of Adsorption 6, 321 - 326Condensation Model for Cylindrical Nano-Pores Applied to Mesoporous Silicate FSM-16[Refereed]International conference proceedings
- May 1997, JOURNAL OF CHEMICAL PHYSICS, 106(19) (19), 8124 - 8134, English[Invited]Scientific journal
- Apr. 1997, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 30(2) (2), 274 - 284, English[Refereed]Scientific journal
- 2021, 膜シンポジウム(CD-ROM), (33) (33)ラマン分光法を利用した中空糸RO/NF膜ナノポーラス構造のin situ解析
- 2020, 膜, 45(6) (6)Functions of Polymeric Additives in Thermally Induced Phase Separation Process of Poly(Vinylidene Difluoride)
- Jul. 2019, 分離技術, 49(4) (4), 208 - 215, JapaneseNF/RO/FO 膜と液体透過現象の分子動力学シミュレーション[Invited]Introduction scientific journal
- THE MEMBRANE SOCIETY OF JAPAN, 2019, MEMBRANE, 44(6) (6), 276 - 288, JapaneseMeeting report
- Oct. 2018, 繊維学会誌, 74(5) (5), 186 - 192, Japanese神戸大学における革新的分離膜の創製[Refereed][Invited]Introduction scientific journal
- Jul. 2018, 膜(MEMBRANE), 43(4) (4), 154 - 160, JapaneseMolecular Dynamics Simulation of Water Permeation in RO/FO Membranes[Refereed][Invited]Introduction scientific journal
- THE MEMBRANE SOCIETY OF JAPAN, 2018, MEMBRANE, 43(6) (6), 252 - 252, JapaneseMeeting report
- The Chemical Society of Japan, Aug. 2017, Cheimstry & Chemical Industry, 70(8) (8), 678 - 680, Japanese膜工学研究の将来展望[Refereed][Invited]Introduction scientific journal
- 触媒学会, Jun. 2017, 触媒, 59(3) (3), 161 - 166, Japanese計算機支援による多孔性セラミック膜の細孔径評価法開発[Invited]Introduction scientific journal
- 日本膜学会, 2017, 膜(MEMBRANE), 42(1) (1), 2 - 10, Japanese[Refereed][Invited]Introduction scientific journal
- 2016, 膜(MEMBRANE), 41(1) (1), 22 - 29, Japanese[Refereed][Invited]Introduction scientific journal
- Nov. 2014, MEMBRANE, 39(6) (6), 357 - 365, JapaneseMolecular Simulation for Microporous Inorganic Membrames and Application to Estimation of Gas Permeation Characteristics[Refereed][Invited]Introduction scientific journal
- Japanese Society for Engineering Education, 08 Aug. 2014, 工学教育研究講演会講演論文集, 26(62) (62), 138 - 139, Japanese2A02 Information related education of Chemical Engineering in Hiroshima University
- Jul. 2014, MEMBRANE, 39(4) (4), 236 - 245, JapaneseMolecular simulation assisted characterization of structures and gas permeation properties of microporous inorganic membranes[Refereed][Invited]Introduction scientific journal
- Dec. 2010, Adsorption News, 24(4) (4), 6 - 13, JapaneseDevelopment of microporous gas separation membranes assisted by molecular simulations[Invited]Introduction scientific journal
- Sep. 2010, 分離技術, 40(5) (5), 76 - 83, Japanese膜分離技術開発の現状と今後の課題[Invited]Introduction scientific journal
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 903 - 903, Japanese
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 913 - 913, Japanese
- The Society of Chemical Engineers, Japan, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 918 - 918
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 919 - 919, Japanese
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 930 - 930, Japanese
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 934 - 934, Japanese
- 公益社団法人 化学工学会, 2010, 化学工学会 研究発表講演要旨集, 2010(0) (0), 3 - 3, Japanese高圧条件における多孔性セラミック膜のCO2透過および分離特性
- May 2009, 分離技術, 39(3) (3), 137 - 145, Japanese多孔性セラミックス系分離膜の分子シミュレーション[Invited]Introduction scientific journal
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 640 - 640, Japanese
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 659 - 659, Japanese
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 663 - 663, Japanese
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 187 - 187, Japanese
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 188 - 188, Japanese
- 公益社団法人 化学工学会, 2009, 化学工学会 研究発表講演要旨集, 2009(0) (0), 189 - 189, Japanese
- 公益社団法人 化学工学会, 2008, 化学工学会 研究発表講演要旨集, 2008(0) (0), 130 - 130, Japanese
- 公益社団法人 化学工学会, 2008, 化学工学会 研究発表講演要旨集, 2008(0) (0), 213 - 213, Japanese
- 公益社団法人 化学工学会, 2008, 化学工学会 研究発表講演要旨集, 2008(0) (0), 824 - 824, Japanese
- 公益社団法人 化学工学会, 2008, 化学工学会 研究発表講演要旨集, 2008(0) (0), 833 - 833, Japanese
- 公益社団法人 化学工学会, 2008, 化学工学会 研究発表講演要旨集, 2008(0) (0), 837 - 837, Japanese
- Applications of molecular simulation to studies of gas permeation and separation through microporous inorganic membranes are reviewed. Porous inorganic membranes have chemical and thermal stability, and they are expected to be used for highly selective separation processes of several molecular mixtures. In order to adequately design those membranes and to decide effective operation conditions, it is important to understand gas permeation and separation mechanisms in ultra-microporoues on membranes from a microscopic viewpoint. A boundary driven nonequilibrium molecular dynamics (NEMD) technique, which enables us to easily simulate a non-equilibrium state permeation, is a useful tool for the understanding of gas permeation and separation phenomena in the scale of molecules. Many papers have been presented for development of molecular simulation techniques and their application to gas permeation and separation simulations on mainly three types of microporous inorganic membranes, zeolite, amorphous silica and carbon membranes. Ideal membrane performance is successfully predicted by using molecular simulations qualitatively, while structural and physical chemical adequacy of membrane model is important to reproduce membrane performance observed experimentally for real membranes. Further development of molecular simulation studies for microporous inorganic membranes would bring about more precise predictions of gas permeation and separation properties.THE MEMBRANE SOCIETY OF JAPAN, Mar. 2007, MEMBRANE, 32(2) (2), 71 - 79, Japanese[Refereed][Invited]Introduction scientific journal
- 公益社団法人 化学工学会, 2007, 化学工学会 研究発表講演要旨集, 2007(0) (0), 797 - 797, Japanese
- 公益社団法人 化学工学会, 2007, 化学工学会 研究発表講演要旨集, 2007(0) (0), 1264 - 1264, Japaneseメチルシクロヘキサンのための触媒膜型反応器の開発
- 公益社団法人 化学工学会, 2007, 化学工学会 研究発表講演要旨集, 2007(0) (0), 1265 - 1265, Japaneseバイモーダル構造を有するシリカ触媒膜によるメタン水蒸気改質膜型反応特性
- 公益社団法人 化学工学会, 2007, 化学工学会 研究発表講演要旨集, 2007(0) (0), 598 - 598, Japanese
- 公益社団法人 化学工学会, 2006, 化学工学会 研究発表講演要旨集, 2006(0) (0), 347 - 347, Japanese
- 公益社団法人 化学工学会, 2006, 化学工学会 研究発表講演要旨集, 2006(0) (0), 349 - 349, Japanese
- 公益社団法人 化学工学会, 2006, 化学工学会 研究発表講演要旨集, 2006(0) (0), 362 - 362, Japanese
- 公益社団法人 化学工学会, 2006, 化学工学会 研究発表講演要旨集, 2006(0) (0), 666 - 666, Japanese
- THE MEMBRANE SOCIETY OF JAPAN, 01 Nov. 2005, MEMBRANE, 30(6) (6), 339 - 343, Japanese
- THE MEMBRANE SOCIETY OF JAPAN, Jul. 2005, MEMBRANE, 30(4) (4), 210 - 218, Japanese[Invited]Introduction scientific journal
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 344 - 344, Japanese
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 357 - 357, Japanese
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 1041 - 1041, Japaneseリン含有チタニア複合膜を用いた燃料電池膜システムの開発と発電特性
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 587 - 587, Japanese多孔性セラミック膜における有機溶媒系ナノ濾過特性
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 636 - 636, JapaneseMD法による多孔性シリカ膜の緻密相におけるガス透過シミュレーション
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 637 - 637, Japanese凝縮性気体のミクロ孔充填相透過モデルによるin-situサブナノ膜細孔径分布評価
- 公益社団法人 化学工学会, 2005, 化学工学会 研究発表講演要旨集, 2005(0) (0), 937 - 937, Japaneseバイモーダル触媒構造を有する水素選択透過性シリカ膜を用いたメタン改質反応
- THE MEMBRANE SOCIETY OF JAPAN, Jan. 2005, MEMBRANE, 30(1) (1), 29 - 37, Japanese[Refereed][Invited]Introduction scientific journal
- Non-equilibrium molecular dynamics simulations of condensable vapor permeation and separation of condensable and non-condensable gas mixtures through a sub-nano scale pore were conducted on a virtual amorphous silica membrane which was prepared by the melt-quench procedures. Concerning the permeation properties of ethane-like LJ particle through a pore of 8 Å in diameter, a surface diffusion-like temperature dependency was observed at relatively high temperature region (400-800 K), while around room temperatures, the permeance decreased with decreasing temperature. The permeances of non-condensable nitrogen-like particle, which has smaller affinity with the pore surface than ethane, was smaller than those of ethane and the Knudsen or surface diffusion-like temperature dependency curve could be seen. In simulations of separation for ethane/nitrogen binary mixtures at 260 K, a temperature below the critical temperature (<I>T<SUB>C</SUB></I>) of actual ethane, the concentration dependency of ethane permeance showed an almost flat curve in low concentration (partial pressure) region, and at a higher specific concentration, the permeance largely decreased. The permeances of nitrogen were smaller at any partial pressure conditions compared with those observed in single nitrogen gas permeation simulations. Especially at a large partial pressure of ethane, the permeance of nitrogen became very small. This fact indicates a condensable component that has larger interaction with the pore surface could obstruct the transport of a non-condensable one to decrease its permeance. Above mentioned results suggest that the micropore filling of condensable gases could occur in a micropore at temperatures below <I>T<SUB>C</SUB></I> and at sufficiently high pressures, and this phenomenon would play an important role in determining the separation performance of these gases through a micropore.公益社団法人 化学工学会, 2004, Asian Pacific Confederation of Chemical Engineering congress program and abstracts, 2004(0) (0), 741 - 741, EnglishSummary international conference
- 2004, Transactions of the Materials Research Society of Japan, 29(7) (7), 3267 - 3270Stability of Ni-doped Silica Membranes for H2 Separation at High Temperature
- 2004, Proc. 8th Intern. Conf. Inorganic Membranes, 242 - 245, EnglishMolecular Dynamics Simulation of Transport and Separation of Condensable and Non-condensable Gas Mixtures through Microporous Silica MembranesSummary international conference
- 2004, Transactions of the Materials Research Society of Japan, 29(7) (7), 3267 - 3270Stability of Ni-doped Silica Membranes for H2 Separation at High Temperature
- 公益社団法人 化学工学会, 2003, 化学工学会 研究発表講演要旨集, 2003(0) (0), 534 - 534, Japanese
- 公益社団法人 化学工学会, 2003, 化学工学会 研究発表講演要旨集, 2003(0) (0), 541 - 541, Japanese
- 公益社団法人 化学工学会, 2003, 化学工学会 研究発表講演要旨集, 2003(0) (0), 564 - 564, Japanese
- 2003, MEMBRANES-PREPARATION, PROPERTIES AND APPLICATIONS, 752, 213 - 218, EnglishGas permeation characteristics and stability of composite silica-metal oxide membranes
- 分離技術会, 2001, 分離技術, 31(5) (5), 278 - 285, Japanese超微細孔を有する多孔性シリカ膜におけるガス透過機構[Invited]
- 1999, Proc. Intern. Congress on Membranes and Membrane Processes, 43, EnglishMolecular dynamics simulation of gas permeation in microporous silica membranesSummary international conference
- 1998, Proceedings of the Fifth International Conference on Inorganic Membranes, 120 - 123, EnglishPermeation mechanism of inorganic gases in ultra-microporous silica membranesIntroduction scientific journal
- 1997, Characterisation of porous solids IV, 413 - 420, EnglishObservation of interface curvature of capillary condensed phase in slit-shaped nano pore with a new MD simulation methodSummary international conference
- 1996, Proc. 4th Intern. Symposium on the Characterization of Porous Solids, EnglishNon-uniform curvature model for condensation in cylindrical nano poresSummary international conference
- Others, 技術情報協会, Jan. 2019, Japanese, ISBN: 9784861047633マテリアルズ・インフォマティクスによる材料開発と活用集Scholarly book
- Others, Academic Press, Elsevier, Aug. 2017, EnglishCurrent Trends and Future Developments on (Bio-) Membranes Silica Membranes: Preparation, Modelling, Application, and Commercialization, Chapter 5: Molecular dynamic (MD) simulation of silica membranesScholarly book
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference有機溶媒分離の性能向上を目指したポリアミド複合膜の開発Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conferenceTiO2-ZrO2-有機キレート配位子(OCL)複合膜の有機溶剤ナノろ過特性Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference圧力支援法によるMoS2ナノシート積層膜の作製とナノろ過特性の評価Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference有機キレート配位子を用いたTiO2-SiO2膜の作製と気体透過特性評価Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference分子シミュレーションを用いたポリアミド膜に対する低分子量物質のファウリング機構解明Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conferenceシリカ担持触媒を用いたMCH脱水素反応および触媒膜の作製Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference分子動力学シミュレーションを用いた酸化グラフェン積層膜の透過機構解明Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conference合成有機化合物の分離精製のための新規NF膜及びプロセス開発Poster presentation
- 化学工学会第85年会, Mar. 2020, Japanese, 化学工学会, 大阪府, Domestic conferenceFOファウリングでの透水挙動に及ぼすファウラント組成の影響Poster presentation
- 第22回化学工学会学生発表会(岡山大会), 2020, Japanese, 化学工学会, 岡山県, Domestic conference分子動力学法によるゼオライト膜における分離透過メカニズム解析と高性能膜の設計Oral presentation
- 第22回化学工学会学生発表会(岡山大会), 2020, Japanese, 化学工学会, 岡山県, Domestic conferenceアミン系架橋剤を利用した積層型酸化グラフェン膜の作製と有機溶剤ナノろ過特性の評価Oral presentation
- 第22回化学工学会学生発表会(岡山大会), 2020, Japanese, 化学工学会, 岡山県, Domestic conference界面重縮合反応を用いたフッ素含有ポリアミド膜の作製と水及び有機溶剤の透過性評価Oral presentation
- 化学工学会姫路大会2019, Dec. 2019, Japanese, 化学工学会, 兵庫県, Domestic conference有機キレート配位子を利用したチタニア-ジルコニア複合膜の細孔径制御Oral presentation
- 化学工学会姫路大会2019, Dec. 2019, Japanese, 化学工学会関西支部, 兵庫県, Domestic conference担持Pt触媒を用いたシリカ系触媒膜の作製とメチルシクロヘキサン脱水素反応の評価Oral presentation
- 化学工学会姫路大会2019, Dec. 2019, Japanese, 化学工学会関西支部, 兵庫県, Domestic conference分子動力学シミュレーションを用いた酸化グラフェン積層膜の透過・分離機構の解明Oral presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conference二次成長法によるナノシート膜上へのCuBDC MOF膜の作製Poster presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conferencePt含有酸化グラフェン積層膜の作製とp-ニトロフェノール還元反応における触媒活性評価Poster presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conferenceMoS2ナノシート積層膜の作製と加圧処理が及ぼす膜性能への影響Poster presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conference界面活性剤の分離精製における新規NF膜及びプロセス開発Poster presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conference分子動力学法による有機溶剤のTiO2膜ナノ細孔における透過現象の解析Poster presentation
- 膜シンポジウム2019, Nov. 2019, Japanese, 日本膜学会, 大阪府, Domestic conference芳香族系有機キレート剤を用いたTiO2-ZrO2複合ガス分離膜の作製と透過特性評価Poster presentation
- 第18回無機膜研究会「プロセス開発に向けた無機膜研究の基礎から応用」, Oct. 2019, Japanese, 化学工学会分離プロセス部会膜工学分科会化学工学会反応工学部会反応分離分科会, 岐阜県, Domestic conference層間が架橋された酸化グラフェン積層膜の開発Poster presentation
- 第18回無機膜研究会「プロセス開発に向けた無機膜研究の基礎から応用」, Oct. 2019, Japanese, 化学工学会分離プロセス部会膜工学分科会化学工学会反応工学部会反応分離分科会, 岐阜県, Domestic conference分子動力学法によるMFI型ゼオライト膜の吸着・拡散性の評価Poster presentation
- 第18回無機膜研究会「プロセス開発に向けた無機膜研究の基礎から応用」, Oct. 2019, Japanese, 化学工学会分離プロセス部会膜工学分科会化学工学会反応工学部会反応分離分科会, 岐阜県, Domestic conference水処理膜における膜ファウリングメカニズムの解明Poster presentation
- 第18回無機膜研究会「プロセス開発に向けた無機膜研究の基礎から応用」, Oct. 2019, Japanese, 化学工学会分離プロセス部会膜工学分科会化学工学会反応工学部会反応分離分科会, 岐阜県, Domestic conference有機キレート配位子を用いたSiO2-TiO2複合膜材料の開発Poster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceDevelopment of novel organic solvent resistant RO membranePoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceMolecular dynamics simulation of organic solvent permeation in nanoporous TiO2 membranesPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceMolecular dynamics study of CO3-absorbed ionic liquid structures and diffusivityPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceFabrication of CuBDC MOF nanosheet laminated membrane by suction filtrationPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceImprovement in pressure resistance by structure control of porous polyketone membrane for pressure retarded osmosisPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceFabrication of graphene oxide membranes on porous α-alumina support by pressure assisted methodPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceGas permeation properties of TiO2-ZrO3-Gallate nanocomposite porous membranes,Poster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceEvaluation of pore size distribution of microporous ceramic membranes by micropore ?lling phase permeation method using various condensable gasesPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceEffect of composite membrane structure on performance of graphene oxide/metal oxide nanosheets composite membranesPoster presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceFabrication of niobium oxide based nanosheet membranes and their nanofiltration performance in water and alcoholOral presentation
- The 18th Asian Pacific Confederation of Chemical Engineering Congress, Sep. 2019, English, The Society of Chemical Engineers, Japan, Sapporo, Japan, International conferenceMolecular dynamics simulation of FO/RO water permeation in amphotericin B water channelOral presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferenceDevelopment of the novel nanofiltration membrane for separating divalent cation and divalent anion in the electrodialysis drainagePoster presentation
- 分離技術会年会2019, May 2019, Japanese, The Society of Separation Process Engineering, Japan, Nagoya Institute of Technology, Nagoya, Domestic conference炭素電極を用いた容量性脱イオンおよび膜容量性脱イオンPoster presentation
- 分離技術会年会2019, May 2019, Japanese, The Society of Separation Process Engineering, Japan, Nagoya Institute of Technology, Nagoya, Domestic conferenceニオブ酸化物ナノシート/酸化グラフェン複合型積層膜の作製とナノろ過特性の評価Poster presentation
- 分離技術会年会2019, May 2019, Japanese, The Society of Separation Process Engineering, Japan, Nagoya Institute of Technology, Nagoya, Domestic conference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径分布評価Oral presentation
- 日本膜学会第41年会, 2019, Japanese, The Membrane Society of Japan, Waseda Univeristy, Tokyo, Domestic conference活性炭素繊維電極を用いた膜容量性脱イオンPoster presentation
- 日本膜学会第41年会, 2019, Japanese, The Membrane Society of Japan, Waseda Univeristy, Tokyo, Domestic conference有機キレート配位子を鋳型にしたチタニア-ジルコニア複合ナノろ過膜の有機溶剤透過・分画特性評価Poster presentation
- 日本膜学会第41年会, 2019, Japanese, The Membrane Society of Japan, Waseda Univeristy, Tokyo, Domestic conference架橋型酸化グラフェン積層膜および酸化グラフェン/ニオブ酸化物ナノシート複合積層膜の作製とナノろ過性能の比較検討Oral presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference有機溶媒耐性を有する新規PA-TFC膜の開発Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Oral presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Poster presentation
- 日本海水学会若手会第10回学生研究発表会, Mar. 2019, Japanese, 日本海水学会若手会, 旧佐世保鎮守府凱旋記念館, Domestic conference電気透析排水から2価陽イオンと2価陰イオンを選択分離する新規ナノ濾過膜の開発Poster presentation
- 日本化学会 第99春季年会, Mar. 2019, Japanese, 日本化学会, 甲南大学, Domestic conferenceMolecular simulation of water permeation in water channel membranes[Invited]Invited oral presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference計算機支援による水および有機溶剤のナノ空間における分子拡散現象の解析Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference吸引ろ過法を利用したCuBDC MOFナノシート積層膜の作製Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Poster presentation
- 第21回化学工学会学生発表会(京都大会), Mar. 2019, Japanese, 公益社団法人化学工学会, 京都, Domestic conference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Oral presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conference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Poster presentation
- 化学工学会第84.年会, Mar. 2019, Japanese, 化学工学会, 芝浦工業大学, Domestic conferenceTiO2-ZrO2-Gallateナノ複合多孔膜の細孔構造と気体透過特性評価Poster presentation
- 第21回化学工学会学生発表会(京都大会)+H31:K31, Mar. 2019, Japanese, 公益社団法人化学工学会, 京都, Domestic conferenceMoS2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Oral presentation
- 化学工学会第84年会, Mar. 2019, Japanese, 化学工学会, 東京, Domestic conferenceA molecular simulation investigation of structural properties and transport performance of artificial water channelPoster presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferencePreparation of polyamide thin film composite forward osmosis membranes using hydrophilic PVDF and PSF hollow fibers modified by PVA perdiffusion methodOral presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferenceThe nanofiltration property of stacked nanosheet composite membrane incorporating graphene oxide into metal oxide membranePoster presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferenceEvaluation of Pore Size Distribution of Microporous Ceramic Membranes by Gas Permeation and Micropore Filling Phase Permeation MethodPoster presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferenceFabrication of forward osmosis membrane with improved pressure resistance using structure-controlled porous polyketone support membranePoster presentation
- AMS12 (12th Conference of the Aseanian Membrane Society), Jul. 2019, English, Aseanian Membrane Society, Jeju, Korea, International conferenceNanofiltration characteristics of organic chelate ligand (OCL)-templated microporous TiO2-ZrO2 membranesOral presentation
- 第28回日本MRS年次大会, Dec. 2018, Japanese, 北九州国際会議場・西日本総合展示場, Domestic conference分子シミュレーションによるAmphotericin B-Ergosterolとポリアミド膜のFO透水性能比較Comparison of Forward Osmosis Water Permeability of Amphotericin B-Ergosterol and Polyamide Membrane by Molecular SimulationPoster presentation
- 化学工学会 中国四国支部;関西支部合同徳島大会, Dec. 2018, Japanese, 徳島大学, Domestic conference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Oral presentation
- 第28回日本MRS年次大会, Dec. 2018, Japanese, 北九州国際会議場・西日本総合展示場, Domestic conference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 MethodPoster presentation
- 第28回日本MRS年次大会, Dec. 2018, Japanese, 北九州国際会議場・西日本総合展示場, Domestic conferenceTiO2-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 separationOral presentation
- 第28回日本MRS年次大会, Dec. 2018, Japanese, 北九州国際会議場・西日本総合展示場, Domestic conferenceFabrication of cross-linked graphene oxide membranes by using alkanolaminePoster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 日本膜学会, 神戸市, Domestic conference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Poster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 神戸市, Domestic conference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Poster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 日本膜学会, 神戸市, Domestic conference非平衡分子動力学シミュレーションによるTiO2 ナノ細孔内液相透過現象のモデリングOral presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 日本膜学会, 神戸市, Domestic conference電気透析排水中の2価陽イオンと2価陰イオンを高度に選択分離する新規ナノ濾過膜の開発と性能評価Poster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 神戸, Domestic conference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Poster presentation
- 分離技術会 第14回東海地区分離技術講演会, Nov. 2018, Japanese, 分離技術会, 名古屋工業大学, Domestic conference多孔性セラミック分離膜と分子シミュレーションPublic discourse
- 膜シンポジウム2018, Nov. 2018, Japanese, 神戸, Domestic conference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Poster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 日本膜学会, 神戸市, Domestic conference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―Oral presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 神戸, Domestic conference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Poster presentation
- 膜シンポジウム2018, Nov. 2018, Japanese, 神戸, Domestic conference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Poster presentation
- 6th International Workshop on Process Intensification (IWPI 2018), Nov. 2018, English, National Taiwan University, International conferenceFabrication of Silica-based Catalytic Membrane including Pt CatalystsEncapsulated in Hollow Silica NanotubesOral presentation
- 6th International Workshop on Process Intensification (IWPI 2018), Nov. 2018, English, National Taiwan University, International conferenceEnhanced Membrane Filtration Performance of Stacked Niobate Nanosheet Membranes by The Addition of Graphene Oxide[Invited]Invited oral presentation
- 膜シンポジウム2018, Nov. 2018, English, 神戸, Domestic conferenceA molecular simulation on structural properties and performance investigation of artificial water channelsOral presentation
- 第17 回無機膜研究会, Oct. 2018, Japanese, 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, Domestic conference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Poster presentation
- 第5回海水・生活・化学連携シンポジウム, Oct. 2018, Japanese, 日本海水学会若手会, 宮城県石巻市, Domestic conference正浸透膜法の駆動溶液に用いる温度応答性イオン液体の会合挙動に関する検討Poster presentation
- 第17 回無機膜研究会, Oct. 2018, Japanese, 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, Domestic conference化学的に剥離されたMoS2ナノシートによる積層膜の作製Poster presentation
- 第17 回無機膜研究会, Oct. 2018, Japanese, 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, Domestic conference「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Poster presentation
- 第17 回無機膜研究会, Oct. 2018, Japanese, 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, Domestic conferenceTiO2-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Poster presentation
- 化学工学会第50回秋季大会, Sep. 2018, Japanese, 化学工学会, 鹿児島市, Domestic conference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Oral presentation
- 化学工学会第50回秋季大会, Sep. 2018, Japanese, 化学工学会, 鹿児島市, Domestic conference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Oral presentation
- 化学工学会第50回秋季大会, Sep. 2018, English, 鹿児島(鹿児島大学), Domestic conference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Oral presentation
- 化学工学会第50回秋季大会, Sep. 2018, Japanese, 化学工学会, 鹿児島市, Domestic conference水分子共存下におけるシリカナノ粒子の高分子膜表面への付着挙動の分子動力学シミュレーションOral presentation
- 化学工学会第50回秋季大会, Sep. 2018, Japanese, 化学工学会, 鹿児島市, Domestic conference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Oral presentation
- 化学工学会第50回秋季大会, Sep. 2018, Japanese, 化学工学会, 鹿児島市, Domestic conferencePt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Oral presentation
- 新技術説明会, Aug. 2018, Japanese, JST, 東京都, Domestic conferenceガス分離/液体分離への応用を目指した多孔性セラミック膜開発Oral presentation
- The 11th Conference of Aseanian Membrane Society (AMS11), Jul. 2018, English, The Rydges Hotel, Brisbane Southbank, Australia, International conferenceMolecular dynamics simulation study of polyamide membrane structures and RO/FO water permeation propertiesOral presentation
- 8th International Symposium on Inorganic Membranes (ISIM8), Jul. 2018, English, The University of Queensland, Brisbane, Australia, International conferenceGas permeation properties of microporous ceramic membranes;molecular simulation and in-situ characterizationof sub-nano porous structuresNominated symposium
- The 11th Conference of Aseanian Membrane Society (AMS11), Jul. 2018, English, Aseanian Membrane Society, Brisbane (Australia), International conferenceFabrication of 2D Niobium Oxide/Graphene Oxide Nanosheet Composite Membranes for NanofiltrationOral presentation
- The 11th Conference of Aseanian Membrane Society (AMS11), Jul. 2018, English, Aseanian Membrane Society, Brisbane (Australia), International conferenceDevelopment of polyamide thin-film composite membrane using novel porous support for organic solvent treatmentPoster presentation
- 第7回JACI/GSCシンポジウム, Jun. 2018, Japanese, 新化学技術推進協会, 神戸市, Domestic conference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Poster presentation
- 第7回JACI/GSCシンポジウム, Jun. 2018, Japanese, 新化学技術推進協会, 神戸市, Domestic conference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Poster presentation
- 15th International Conference on Inorganic Membranes (ICIM-15)15th International Conference on Inorganic Membranes, Jun. 2018, English, The Westin Bellevue Dresden, Germany, International conferenceSimulation and modeling of water permeation in TiO2 nanoporous membranes using non-equilibrium molecular dynamicsOral presentation
- 15th International Conference on Inorganic Membranes (ICIM2018), Jun. 2018, English, International conference2D niobium oxide nanosheet membranes for water treatment: effects of nanosheet preparation methods on their membrane performancesOral presentation
- 化学工学会第50回秋季大会, May 2018, Japanese, 化学工学会, 鹿児島市, Domestic conference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Oral presentation
- 日本膜学会第40年会, May 2018, Japanese, 東京, Domestic conference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Poster presentation
- 日本膜学会第40年会, May 2018, Japanese, 東京, Domestic conference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Poster presentation
- 日本膜学会第40年会, May 2018, Japanese, 日本膜学会, 東京都, Domestic conferenceキュービック型メソポーラスシリカ膜で被覆されたPt触媒の触媒活性と構造耐久性Oral presentation
- 日本膜学会第40年会, May 2018, Japanese, 日本膜学会, 東京都, Domestic conferenceRO/FO膜における水透過の分子動力学シミュレーションOral presentation
- 分離技術会年会2018, May 2018, Japanese, 分離技術会, 千葉県習志野市, Domestic conferencePt内包シリカナノチューブを利用した触媒膜の作製Poster presentation
- 第20回化学工学会学生発表会, Mar. 2018, Japanese, 広島, Domestic conference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Oral presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference有機溶媒耐性を有するポリアミド系複合薄膜の開発Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference分子動力学法による水中の高分子膜表面近傍におけるシリカナノ粒子の挙動解析Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference分子シミュレーションによるポリアミド膜設計とFO/RO透水性能評価Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference電気透析排水中の2価陽イオンと2価陰イオンを分離する新規ナノ濾過膜の開発Poster presentation
- 日本海水学会若手会第9回学生研究発表会, Mar. 2018, Japanese, 東京, Domestic conference電気透析排水から2価陽イオンと2価陰イオンを選択分離する新規ナノ濾過膜の開発Oral presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference正浸透膜法による食品工程廃水濃縮プロセスに関する研究Poster presentation
- 化学工学会第83年会, Mar. 2018, Japanese, 化学工学会, 吹田市, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 第20回化学工学会学生発表会, Mar. 2018, Japanese, 広島, Domestic conference気体透過法による多孔膜のサブナノ細孔径分布評価Oral presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conference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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conferenceTiO2-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Poster presentation
- 化学工学会第83回年会, Mar. 2018, Japanese, 大阪, Domestic conferencePt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Poster presentation
- 第2回 環境セミナー, Jan. 2018, Japanese, 京都府中小企業技術センター, Domestic conferenceガス分離膜開発と分子シミュレーションPublic discourse
- 化学工学会金沢大会2017, Dec. 2017, Japanese, 石川, Domestic conference2D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Oral presentation
- 第8回イオン液体討論会, Nov. 2017, Japanese, 東京, Domestic conference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Poster presentation
- 膜シンポジウム2017, Nov. 2017, English, 富山, Domestic conference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–Poster presentation
- 膜シンポジウム2017, Nov. 2017, English, 富山, Domestic conference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Poster presentation
- 膜シンポジウム2017, Nov. 2017, English, 富山, Domestic conferenceTiO2–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Poster presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceTEMPERATURE-RESPONS IVE PROPERTY OF DRAW SOLUTIONS FOR FORWARD OSMOS IS DESALINATION: A MOLECULAR SIMULATION STUDYPoster presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceNON-EQUILIBRIUM MOLECULAR DYNAM ICS SIMULATION OF WATER TRANSPORT THROUGH TiO2 NANOPOROUS MEMBRANESPoster presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceMOLECULAR SIMULATION OF CYCLIC PEPTIDE NANOTUBES FOR NOVEL WATER CHANNELPoster presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceFABRICAT ION OF HIGHLY STABLE STACKED NIOBATE NANOSHEET MEMBRANES FOR NANOFILTRAT IONOral presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceEFFECT OF NANOSHEET PREPARATION METHODS ON THE MEMBRANE PERFORMANCE OF STACKED NIOBATE NANOSHEET MEMBRANESPoster presentation
- The 11th International Conference onSeparation Science and Technology(ICSST17), Nov. 2017, English, 韓国(釜山), International conferenceCHARACTERIZATION OF NANOPOROUS TITANIA-ZIRCONIA COMPOSITE MEMBRANES PREPARED BY USING ORGANIC CHELATING LIGANDSPoster presentation
- 第16 回無機膜研究会, Oct. 2017, Japanese, 静岡, Domestic conference気体透過法による多孔膜のサブナノ細孔径分布評価Poster presentation
- 第16 回無機膜研究会, Oct. 2017, Japanese, 静岡, Domestic conference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Poster presentation
- 第16 回無機膜研究会, Oct. 2017, Japanese, 静岡, Domestic conference2D 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Poster presentation
- 化学工学会第49回秋季大会, Sep. 2017, Japanese, 名古屋, Domestic conference有機溶媒耐性を有する高分子系複合薄膜の開発Oral presentation
- 化学工学会第49回秋季大会, Sep. 2017, Japanese, 化学工学会, 名古屋市, Domestic conference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Poster presentation
- 化学工学会第49回秋季大会, Sep. 2017, Japanese, 名古屋, Domestic conference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Poster presentation
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), Jul. 2017, English, USA(San Francisco), International conferencePreparation of Amphotericin B-Ergosterol structures and molecular simulation of water adsorption and diffusionPoster presentation
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), Jul. 2017, English, USA(San Francisco), International conferencePreparation and nanofiltration performance of niobate nanosheet membranesOral presentation
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), Jul. 2017, English, USA(San Francisco), International conferenceEffects of separation performance of forward osmosis membranes on sugar concentration for bio-ethanol productionPoster presentation
- 11th International Congress onMembranes and Membrane Processes(ICOM2017), Jul. 2017, English, International conferenceEffect of gas molecular properties on characterization of microporous membrane structures based on the modified GT model: molecular dynamics studyPoster presentation
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), Jul. 2017, English, USA(San Francisco), International conferenceDirect numerical simulation of cake formation in cross-flow microfiltration processPoster presentation
- 2017 International Congress on Membranes and Membrane Processes (ICOM2017), Jul. 2017, English, USA(San Francisco), International conferenceCharacterization of porous titania-zirconia composite membrane materials prepared by using organic chelating ligandsPoster presentation
- 日本膜学会第39年会, May 2017, Japanese, 東京, Domestic conference有機溶媒耐性を有するポリアミド活性層複合膜の開発Poster presentation
- 日本膜学会第39年会, May 2017, Japanese, 東京, Domestic conference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Poster presentation
- 日本膜学会第39年会, May 2017, Japanese, The Membrane Society of Japan, Domestic conferenceMembrane separation technology for CO2 separation and recovery in Japan[Invited]Invited oral presentation
- 日本膜学会第39年会, May 2017, Japanese, 東京, Domestic conference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Poster presentation
- 日本膜学会第39年会, May 2017, Japanese, 東京, Domestic conference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Poster presentation
- 分離技術会年会2017, May 2017, Japanese, 神奈川, Domestic conferenceTiO2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Oral presentation
- 分離技術会年会2017, May 2017, Japanese, 神奈川, Domestic conferenceTiO2-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Oral presentation
- The 5th Asian Graduate Student Symposium on Membrane Engineering (AGSM5), Apr. 2017, English, JAPAN(KOBE), Domestic conferenceCharacterization of Cyclic Peptide Nanotube Structures and Water Permeability Estimation: a Molecular Simulation StudyOral presentation
- 第19回化学工学会学生発表会 (豊中大会), Mar. 2017, Japanese, 大阪, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conference分子動力学法を用いたTiO2ナノ細孔内水透過機構の検討Poster presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conference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Poster presentation
- 化学工学会第82年会, Mar. 2017, English, 東京, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conference直接数値シミュレーションを用いた粒子分散液の細孔透過挙動解析Poster presentation
- 第19回化学工学会学生発表会(豊中大会), Mar. 2017, Japanese, 大阪, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conference数値シミュレーションを用いたコアレッサー型油水分離膜の設計Poster presentation
- 日本海水学会若手会 第8回学生研究発表会, Mar. 2017, Japanese, 山口, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2017, English, 東京, Domestic conference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Poster presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conference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Poster presentation
- 化学工学会第82年会, Mar. 2017, Japanese, 東京, Domestic conferenceTiO2-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Poster presentation
- 膜シンポジウム2016, Dec. 2016, Japanese, 大阪, Domestic conference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Poster presentation
- 膜シンポジウム2016, Dec. 2016, Japanese, 大阪, Domestic conference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Poster presentation
- 膜シンポジウム2016, Dec. 2016, Japanese, 大阪, Domestic conferenceクロスフローろ過におけるケーク形成過程に及ぼす膜面形状の影響Poster presentation
- Kobe University Academic Research and Education Forum(KUAREF), Dec. 2016, English, The Margo Hotel, Depok, Indonesia, International conferenceMembrane Technology for CO2 Separation in Kobe University-Ionic Liquid Impregnated Gel and Ceramic Membranes-Nominated symposium
- 第15回無機膜研究会, Nov. 2016, Japanese, 愛知, Domestic conference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Poster presentation
- THE 5TH ASIAN CONFERENCE ON INNOVATIVE ENERGY & ENVIRONMENTAL CHEMICAL ENGINEERING (ASCON-IEEChE 2016), Nov. 2016, English, The Hotel New Grand, Yokohama, Japan, International conferenceCO2 permeation and CO2/N2 separation characteristics of sol-gel derived microporous amino-silica membranesOral presentation
- 化学工学会第48回秋季大会, Sep. 2016, Japanese, 徳島, Domestic conference粒子分散液の細孔透過に伴うファウリング挙動Oral presentation
- 化学工学会第48回秋季大会, Sep. 2016, Japanese, 徳島, Domestic conference吸引ろ過法による二次元ナノシート積層膜の作製と膜分離特性Oral presentation
- 化学工学会第48回秋季大会, Sep. 2016, Japanese, 徳島, Domestic conference吸引ろ過法による二次元ナノシート積層膜の作製と膜分離性能Oral presentation
- 化学工学会第48回秋季大会, Sep. 2016, Japanese, 徳島, Domestic conferenceO/Wエマルションの膜細孔透過におけるぬれ性の影響Poster presentation
- The 10th Conference of Aseanian Membrane Society (AMS10), Jul. 2016, English, Nara Kasugano International Forum IRAKA, Nara, Japan, International conferencePreparation and gas permeation characteristics of microporous carbon-ceramic membranes by counter diffusion thermal CVD of organic solvent vaporPoster presentation
- Nara Kasugano International Forum IRAKA, Nara, Japan, Jul. 2016, English, International conferencePreparation and Gas Permeation Characteristics of Microporous Amorphous TiO2-ZrO2-Organic Chelate MembranesKeynote oral presentation
- 15th International Conference on Inorganic Membranes (ICIM-14)15th International Conference on Inorganic Membranes, Jun. 2016, English, Global Learning Center, Georgia Institute of Technology, Atlanta, GA, USA, International conferenceMolecular simulation study of vapour and liquid phase permeation of water through organosilica membranesPoster presentation
- 化学工学会第82年会, Mar. 2016, English, 東京, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2016, Japanese, 東京, Domestic conference直接数値シミュレーションを用いた粒子分散液の細孔透過挙動解析Poster presentation
- 第19回化学工学会学生発表会(豊中大会), Mar. 2016, Japanese, 大阪, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2016, Japanese, 東京, Domestic conference数値シミュレーションを用いたコアレッサー型油水分離膜の設計Poster presentation
- 日本海水学会若手会 第8回学生研究発表会, Mar. 2016, Japanese, 山口, Domestic conference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Oral presentation
- 化学工学会第82年会, Mar. 2016, English, 東京, Domestic conference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Poster presentation
- 化学工学会第82年会, Mar. 2016, English, 東京, Domestic conference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Poster presentation
- 40th International Conference and Exposition on Advanced Ceramics and Composites, Jan. 2016, English, Hilton Daytona Beach Resort and Ocean Center, Florida, USA, International conferenceCharacterization of subnano-scale porous structures and gas permeation properties of microporous ceramic membranesKeynote oral presentation
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Hiroshima University, 01 Apr. 2020 - 31 Mar. 2023Mechanism elucidation and control of efficient release of healing agent in self-healing coatings containing nanofibers
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2020 - 31 Mar. 2023Depelopment of microporous TiO2-ZrO2-organic composite membranes with ultra-high permeability for organic solvent liquid phase separation
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2019 - 31 Mar. 2022Development of ultrathin separation membranes utilizing 2D nanosheet materials for water treatment
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Kobe University, 01 Apr. 2018 - 31 Mar. 20221.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)では、分子動力学計算を用いて環状ペプチドチャネル分子を設計、合成し、これをリン脂質二分子膜に導入することで新規生体模倣型FOチャネル膜の開発を行った。1-2.高分子液晶垂直配向チャネル膜の創製(彌田、佐伯、稲田)では、高分子液晶の垂直配向シリンダー構造を水チャネルとして利用したFO膜の創製を行った。各種支持膜との複合化製膜プロセスを構築した。1-3.革新的ロバスト無機ゼオライトFO膜の創製(松方)では、ZSM-5等のゼオライトが持つ親水性ミクロ細孔特性を利用して、安定性が高く高温にも耐える全く新しい無機FO膜の開発を行った。1-4.計算機科学による高機能FO膜開発支援 (吉岡)では、分子動力学計算により水チャネルの正浸透透水モデルを構築し、高透水性発現に必要な構造や物性をシミュレーションにより解明するとともに、結果のフィードバックにより、高透水性FO膜開発支援を行った。 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DSの創製を目指し100種類以上のイオン液体分子について量子化学計算を活用して系統的なスクリーニングを行い、化学構造と温度相転移特性との関係性を明らかにするとともに、熱応答性イオン液体の温度依存的浸透圧発現機構を解析し、高浸透圧と相分離特性を両立する高性能なイオン液体DSの創出を行った。 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膜とDSを用いた連続FOシステムの構築を行い、構築したシステムにより、熱応答性イオン液体DSの性能確認を行うとともに、海水淡水化を想定したFO膜プロセスで連続的にモデル海水から純水を得ることに成功した。Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2016 - 31 Mar. 2019Development of highly functional stacked nanosheet membranes with antifouling propertyPorous inorganic membranes have advantages of high temperature resistance, chemical stability and mechanical strength, therefore, various researches for water treatment have been investigated. In this study, stacked nanosheet membranes utilizing two-dimensional nanosheets were fabricated for the development of functional inorganic membranes with superior water permeability, separation performance as well as high antifouling property. We have successfully fabricated the stacked nanosheet membranes with high structural stability using simple vacuum filtration method. The nanosheet membranes show high rejection against anionic organic dyes and divalent salts, which were found to act as nanofiltration. Furthermore, the fouling resistance with recovery function of water flux under ultraviolet light irradiation was also confirmed.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A), Grant-in-Aid for Young Scientists (A), Nagasaki University, 01 Apr. 2016 - 31 Mar. 2018Development of technologies simulating the transport of micropollutants through reverse osmosis membrane for potable water reuseThis project evaluated the importance of membrane properties of reverse osmosis (RO) membranes on the transport of micropollutants, and identified that there could be RO skin layer properties other than skin layer thickness and free-volume hole-radius that govern water and solute permeation. In addition, this project applied a steric pore-flow model to predict the rejection of micropollutants, and found that their rejection can be predicted by estimating the free-volume hole-size with a single reference solute and membrane pure water permeability. This project also employed molecular dynamics (MD) simulation techniques to predict the transport behaviors of water and three N-nitrosamines. MD simulations showed that diffusivity of N-nitrosamines increased inversely with respect to their molecular size.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Kobe University, 01 Apr. 2015 - 31 Mar. 2018In this study, innovative forward osmosis (FO) membranes and draw solutions (DSs) were developed for the purpose of construction of water treatment process with infinitely close to zero energy consumption. The water channel membrane with biomimetic property having high water permeability and high salt rejection, hydrogel membrane with micro-phase separation and electrostatic repulsion property, and robust inorganic membrane with high organic solvent resistance and high mechanical strength were successfully developed as FO membranes. In addition, photo-responsive DS and both carbon dioxide responsive and thermo-responsive DS were developed as novel regenerable DSs.Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2015 - 31 Mar. 2018, Principal investigatorOrganic chelating ligands could be remained in a ceramic membrane when it was calcined at 350 dgree C in nitrogen atmosphere. TiO2-ZrO2-Dopaine sol coated membranes on alumina support showed a CO2/N2 permeation ratio of 20 at 35 degree C, which indicated that TiO2-ZrO2-based gas separation membranes could be prepared. On the other hand, TiO2-ZrO2 membranes, prepared by removing organic chelate ligand as a template for forming porous structures, had fractionation performance of molecular weight cut-off around 2,000. This type of membrane is promising for a nanofiltration membrane. From the results of non-equilibrium molecular dynamics permeation simulations under a pressure gradient condition, molecular permeation flux would depend on interaction of permeating molecules with pore surface.Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Hiroshima University, 01 Apr. 2013 - 31 Mar. 2016Photo-induced sol-gel processing for low-temperature fabrication of high-performance silsesquioxane membranes for use in molecular separationSilsesquioxane (SQ) has demonstrated properties that are seen in both silica (SiO2, inorganic) and silicone (organic). Conventionally, SQ-derived sols are coated onto ceramic supports, followed by firing at 200~400C, which facilitates further condensation to form a SQ separation layer with high separation performance. In this work, we proposed, for the first time, the strategy for fabricating silsesquioxane (SQ) membranes at low temperature using photo-induced sol-gel processing. Radical and cationic polymerization of SQ membranes showed high degrees of separation factor and permeance for water/isopropanol separation in pervaporation.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Hiroshima University, 01 Apr. 2012 - 31 Mar. 2015Development of extremely thin Molecular-Net-Sieving membranesA novel concept of Molecular-Net-Sieving (MNS) where space consisting of networks can separate molecules based on the molecular sieving mechanism is proposed for the development of extremely high H2 permeable membranes. New silicon-based alkoxides and oligomers were prepared, and positron annihilation spectroscopy was applied to evaluate the pore structures. In addition, Molecular-Net-Sieving membranes were prepared from various types of precursors and characterized. Molecular-Net-Sieving membranes were confirmed to show higher hydrogen permeance higher than 1x10-6 mol m-2 Pa-1 s-1, and high separation factors for H2/propane (>1,000) and H2/SF6 (>10,000).
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Hiroshima University, 01 Apr. 2012 - 31 Mar. 2015Development of microporous carbon-ceramic membranes by reactive thermal CVD of organic gasesThree types of organic precursors of propylene (C3H6), isobutylene (iso-C4H8), and toluene were employed and counter diffusion CVD technique was used to prepare carbon-SiO2 membranes. Organic gas diluted by nitrogen were fed from outside of the cylinder shaped Al2O3 substrate and also nitrogen diluted oxygen gas was fed from inside the substrate to meet a carbon precorsor preferably in pores of SiO2-ZrO2 intermediate layer on the substrate. After counter diffusion CVD operation at 400 C using C3H6 as a precursor, helium permeance at 200 C was 3.9 x 10-7 mol m-2 s-1 Pa-1 with He/N2 and He/SF6 selectivity of 27 and 215, respectively. For the case of iso-C4H8 and toluene as precursors, helium permeance of 2.8 x 10-7 and 1.0 x 10-7 mol m-2 s-1 Pa-1 with improved He/N2 and He/SF6 selectivity of 74, 343 for iso-C4H8, and 121, and 1620 for toluene, respectively, were obtained, possibly due to the large molecular size of precursor.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Hiroshima University, 2009 - 2011Silica network engineering for advanced separation membranesStructured alkoxides consisting of organic functional groups as pendant groups or main chain have been proposed for the control of amorphous silica networks. We proposed Normalized Knudsen-based Permeance(NKP) to evaluate pore sizes less than 1 nm. Bis(triethoxysilyl) ethane(BTESE)-derived silica membranes were found to show high permeability and selectivity to gas separation(H2/ organic gases), dehydration of organic solutions, and reverse osmosis
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Hiroshima University, 2009 - 2011Development of characterization method for sub-nano scale small voids of amorphous materials by multi probe gas diffusion technique.A novel equipment and technique for characterization of small void volume of microporous powder sample were developed based on the volumetric method by using various gas molecules as a probe molecule. As microporous materials, the porous powder sample of amorphous silica and BTESE(bis-triethoxysilyl ethane) silica was prepared, and the detailed void structure was evaluated using the multi-probe gas molecular diffusion method. This technique enables us to estimate the difference in the sub-nano scale void structure of these amorphous materials. The validity of this technique verified by evaluating the void volume of Y type zeolite whose micro structure is well known, and the theoretical pore volume was successfully obtained. The difference in the structure of amorphous silica and BTESE silica was examined also by the molecular simulation. The simulated molecular size dependence of gas diffusivity in these small void structures showed good correlation with the void volume distribution measured with the multi-probe gas molecular diffusion method.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Hiroshima University, 2007 - 2008構造を制御した多孔性膜におけるナノ制限空間ダイナミクスと高度分離システムへの応用本研究では,ナノ〜サブナノ細孔における液相系の透過機構の解明と高度分離システムへの応用を目的とし,以下を具体的な研究実績とする。 (1)細孔構造および表面特性を制御したナノ多孔性膜の作製 これまでに製膜実績のあるSiO_2,TiO_2を用いて,ゾルーゲル法により平均細孔径0.5nm〜5nmを有する多孔膜の作製を行った。有機無機ハイブリッド膜は,セラミック多孔膜をまず作製した後にシランカップリング剤を用いて細孔内表面の疎水化を行うpost-modification法と,疎水基を有するアルコキシドを用い疎水ゾルを調製するin-situ法によった。特に,今年度はTEOSとMTESを用いる疎水ゾル(Me-SiO2)ゾルの調製条件を詳細に検討し,濃度およびTEOS/MTES比により,1nmまでの疎水性細孔制御に成功した。 (2)ナノ多孔性膜および膜材料の特性評価 膜細孔径のナノ細孔評価として,ナノパームポロメトリー法を用い0.5〜50nmの細孔径を測定した。コーティング膜の各種溶媒の接触角を測定することで,Me-SO2の臨界表面自由エネルギーは35-20J/m^2であり,ヘキサンでは完全濡れが期待できること,従って水とヘキサンでのナノパームポロメトリー測定を行なうことで,ナノ細孔の親疎水性を定量的に評価できることを明らかとした。 (3)透過性評価と分離システムへの応用:ナノ制限空間のダイナミクス ヘキサン溶媒中の微量水分の影響について検討した結果,水分濃度にかかわらずMeSiO2膜は安定した透過流束を示した。また,平均細孔径1.7nmのMe-SiO2膜のアルカン溶質の阻止特性を評価した結果,極めて滝透過性を示すと共に,分画分子量1000程度であることを明らかとした。
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Hiroshima University, 2007 - 2008Control of metal doped amorphous frame structures and development of effective void space for gas separation membranes, using molecular dynamics simulations多孔性セラミック気体分離膜材料として, 金属添加シリカおよびジルコニアコロイドゾルを調製し, ゲル粉体試料の構造を評価した. これらのセラミック材料を用いることにより, 高透過選択性と安定性を有する多孔性セラミック水素分離膜の作製が可能であった. また, 様々な構造を有するアモルファスシリカ膜における気体透過現象を分子動力学シミュレーションにより再現し, 気体透過特性とアモルファス多孔性セラミック膜構造の関係を明らかとした.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Exploratory Research, Grant-in-Aid for Exploratory Research, Hiroshima University, 2006 - 2007中温度域での完全水素分離を可能とする新規なセラミック膜の創製本研究では,シリカあるいはチタニアなどのセラミックスを膜材料として用い,選択的溶解機構に基づく新規な水素分離膜を提案している。まず,シリカ,チタニアおよびリンとの複合酸化物材料を用い,プロトン伝導性薄膜の創製を行ない,このプロトン伝導性に電子伝導性を付与すると,水素分離膜を創製することが可能となると考えられる。本研究では,この新たな水素透過機構に基づく,100-300℃での中温度域で完全水素選択性を示すセラミック膜を創製するために,以下の2種類のゾルゲル法でプロトン伝導膜の創製を行なった。 ・メソポーラスTiO_2/Tipペレット膜の開発 チタンアルコキシドをH_3PO_4触媒を用いて,メソポーラスTiO_2を作製した.従来法TiO_2と比較して比表面積が2〜4倍増加し,TiO_2(H_3PO_4)のP/Ti=0.5では最も高い比表面積262m^2/gを示した。このメソポーラスチタニアに,チタンリンゾル(TiP)をコーティングすることで,電気伝導率は200℃,水蒸気3kPa下においても高い電気伝導率14mS/cmを示すことを見出した。 ・TiO_2-P_2O_5薄膜の開発 ゾル調製時にP源としてP_2O_5(五酸化二リン)とTBOT(テトラブチルオルトチタネート)を用い,新規チタン-リン膜の作製を行い,薄膜としてプロトン伝導特性や特性評価を行った。この手法では,1stepで香典同物質の創製の可能性がある。TiO_2-P_2O_5薄膜は湿度増加と共に伝導率が一次関数的に増加し,TiO_2(P_2O_5)[P/Ti=2]は,100℃,80%RH下において最も高い伝導率180mS/cmを示した.さらにTiO_2(P_2O_5)[P/Ti=9]は,160℃,100%RH下で3S/cmとNafion膜と比較して約30倍の性能を示すことを明らかにした。
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Hiroshima University, 2005 - 2006多孔性無機材料による気体分離膜設計のための分子動力学膜シミュレータの開発本年度は,アモルファスシリカ膜における気体透過現象を分子動力学シミュレーションにより再現することを目的として,気体透過特性におよぼす膜構成原子の動特性と膜細孔径分布の影響に着目して,以下のとおり研究を実施した. 1.シリカポリマーネットワーク膜モデルの妥当性評価とポテンシャルパラメータの最適化 分子の膜透過という動特性が分子シミュレーションで再現できているかが重要であり,これは,膜を構成する分子のポテンシャル関数およびポテンシャルパラメータをどのように設定するかに大きく左右される.アモルファスシリカ構造を規定する3体ポテンシャルパラメータの値を変化させて動径分布関数およびシリカ膜を構成する酸素原子の平均二乗変位を計算した結果,原子の平衡位置,すなわちアモルファス構造を維持したままでシリカネットワークの動きを制御することが可能であることがわかった.また気体透過速度の温度依存性より得られる活性化エネルギーは膜構成原子の動きを抑制した場合に大きくなった. 2.多元的細孔膜モデルの構築と膜透過シミュレータとしての妥当性評価 シリカネットワーク相の細孔径分布は原子密度に依存し,密度の増加にともなって平均細孔径は減少したが,密度1.8g/ml以上においては粒界的な細孔は消失し,He透過速度の温度依存性はその密度を境としてKnudsen的な透過から活性化的な傾向へと変化した.1.8g/mlの膜モデルでは実在CO_2分離膜における透過速度と近い結果が得られたが,H_2分離膜に比べて活性化エネルギーは小さかったことから,H_2分離膜のシリカネットワーク相はより高密度であると考えられる.粒子間細孔モデルを用いたCO_2透過シミュレーション結果と密度1.8g/ml膜モデルにおけるHe透過速度の結果を組み合わせて実在CO_2分離膜における気体透過速度データにフィッティングしたところ,およそ18nm四方に1個の割合で粒子間細孔が存在することが示唆され,これは,実在シリカ膜作製時に使用したコロイド粒子サイズを考慮すると妥当な結果であった.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), HIROSHIMA UNIVERSITY, 2004 - 2005Preparation of nano-structured proton conductive ceramic membranes and membrane electrode assembly (MEA) systemTitanium phosphorus oxide (TiP) and composites with titania (Ti/TiP) were prepared by a sol-gel method. Tip membranes coated on slide glasses showed high electrical conductivities based on surface resistivity measurements at 150℃. The conductivities increased drastically with the partial pressure of water in the range of 0 to 10 kPa, and showed an electrical conductivity as high as 10^<-2> S/cm at a vapor pressure of 2.5 kPa (relative humidity of 0.5 RH%). Two types of membrane-electrode assemblies (MEAs) : a pore-filling-type and a thin-film-type, were constructed using Anodisc【○!R】, a porous alumina membrane (pore size : 100 nm ; thickness 60 μm). The proton transport number through the pore-filling type MEA was found to be approximately one. The two types of MEAs were successfully used in fuel cell experiments in a hydrogen/ air system. The performance of the thin-film-type MEA was superior to the pore-filling-type MEA. Moreover, two types of thin-film type of MEAs were prepared using electrically-conductive porous carbon substrates. MEA-2, which were prepared after fabricating an intermediate layer consisting of mixtures of carbon particles and polyimide, showed a better i-v performance than MEA-1, which were prepared directly on porous carbon substrate.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Hiroshima University, 2003 - 2004多孔性ガス分離膜における分子充填透過機構の解明とサブナノ膜細孔径分布評価への応用1.凝縮性ガス透過シミュレーションによるマイクロ孔充填・透過機構の検討 非平衡分子動力学法を用いて凝縮性ガス(エタン)の透過シミュレーションを行ったところ,マイクロ孔充填相の形成による透過速度の低下が見られ,その際の圧力は細孔径が大きい方が高くなった.また,透過分子の蒸発エネルギーと吸着エネルギーを用いてマイクロ孔充填相の移動モデルを構築し,細孔径分布を考慮して数値シミュレーションを行ったところ,透過分子と膜細孔表面との相互作用および細孔径分布に由来する透過速度の減少傾向が良好に再現され,分子充填相透過現象を利用したサブナノ細孔径分布評価の理論的妥当性が示された. 2.凝縮性ガスの膜材料表面との相互作用エネルギーの評価 膜材料のシリカコロイドゾルを乾燥させ,1000℃で焼成して作成した非多孔性粉体試料における標準凝縮性ガス(エタン,プロパン,ブタン)の吸着等温線を測定し,Frenkel吸着理論を用いて各ガスとシリカ材料との相互作用パラメータを求めた.シリンダー状の細孔形状を仮定することにより,非多孔性固体表面との相互作用パラメータを基準として,細孔内ポテンシャル場の細孔径依存性を得る手法を確立した. 3.膜細孔径分布評価法の妥当性の検討 平均細孔径が異なる3種類の実在多孔性シリカ膜において,標準凝縮性ガスの透過速度の圧力依存性を測定した.標準凝縮性ガスの細孔内ポテンシャルと細孔径の関係および吸着ポテンシャル理論を用いて,透過速度の圧力依存性を透過速度と細孔径の関係に換算することにより,ガス透過に有効な細孔径分布を推算可能であった.どの凝縮性ガスを標準ガスとして用いてもそれぞれの膜について同様な細孔径分布が得られ,また,透過速度の分子サイズ依存性から予測された細孔径との定量的な一致も見られ,マイクロ孔充填相透過モデルを利用したサブナノ膜細孔径分布評価法の妥当性が示唆された.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Exploratory Research, Grant-in-Aid for Exploratory Research, Hiroshima University, 2002 - 2003新規な透過原理に基づく完全水素選択性セラミック膜の創製アモルファス状態のシリカやチタニアなど酸化物はその分子構造がネットワーク構造を有し,ヘリウムや水素分子のみが透過可能,あるいは,ヘリウムや水素分子すら透過困難な微小な細孔を形成する。このネットワークにはsiOH基あるいはTiOH基が存在し,これらのOH基のHは水素イオンとして拡散移動することが可能であり,高いプロトン伝導性を示すことが示されている。本研究では,シリカあるいはチタニアを用い,プロトン伝導性薄膜の創製を行うことを研究目的としている。プロトン伝導性が発現することが明らかとなれば,プロトン伝導性を有するセラミックスと白金などの電子伝導性材料をナノサイズで並列複合化することで,新規な水素分離膜の創製が可能になると考えられる。 昨年度は,プロトン伝導性薄膜の創製に関する研究を行ない,チタンテトライソプロポキシド(TTIP)とリン酸を出発原料とするチタンリン複合酸化物は,高いプロトン伝導性を有することを明らかとした。 今年度は,ゾルゲル法によりチタンリン複合酸化物をスライドガラス,SUS管,Anodisc,カーボンシート上に製膜する手法を確立した。さらに,表面抵抗および体積抵抗の測定により,温度50-300℃,湿度0-10%におけるプロトン伝導率の評価を行ない,300℃,水蒸気圧50kPaにおいても0.01S/cm程度の高い値を示すこと,150℃では水蒸気が5kPa程度(相対湿度で約1%)で10^<-1>S/cm程度に増加することも明らかとした。高温水蒸気下では,電気伝導率は徐々に低下することが示され,EDX測定より膜中のリンが減少していることが明らかとなった。そこで,製膜直後のチタンリン複合酸化物を水中へ浸漬することによって,膜の安定性が向上することを見出した。
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), HIROSHIMA UNIVERSITY, 2001 - 2003Preparation of catalytic membranes with controlled structure and its application to membrane reactionCatalytic membrane reactors were investigated using two types of catalytic membranes : MFI membranes which had separation ability and catalytic activity in the top layer and silica membranes which had separation ability in the top layer and catalytic activity in the supporting layer. MFI zeolite membranes having different Si/Al ratios were prepared by secondary growth of crystalline colloidal seeds under hydrothermal conditions. An MFI membrane of Si/Al=∞ showed a n-C_4H_<10> permeance of 1.5x10^<-5> m^3(STP)m^<-2>s^<-1>kPa^<-1> and a n/i-C_4H_<10> selectivity of 15 at 150℃. By addition of Al into MFI membranes, the zeolite layers appear to be randomly-oriented and n/i-C_4H_<10> selectivities were decreased. Methylation of toluene using MFI catalytic membrane reactors was carried out from 400-500 ℃. Toluene conversions increased with reaction temperature and p-xylene selectivity achieved was 80 % at maximal, suggesting the effectiveness of MFI catalytic membrane reactors. Methane steam reforming with and without added oxygen was theoretically and experimentally investigated using microporous silica membranes, which allow the permeation of hydrogen as well as other gases in reactants and products. A simulation of catalytic membrane reactors was carried out for a co-current, isothermal, and plug-flow-type membrane reactor with the selective permeation of hydrogen through microporous membranes. Catalytic membrane reactors, consisting of a silica microporous layer and a Ni-catalyst layer, were prepared. Catalytic membrane reactors showing a hydrogen selectivity over nitrogen of 30-100 with hydrogen permeances of 0.5-3x10^<-7> mol m^<-2>s^<-1>Pa^<-1> were applied to the steam reforming of methane with and without the addition of oxygen. The reaction was carried out at 500 ℃, and the feed and permeate pressure were maintained at 100 and 20 kPa, respectively. Methane conversion, X_
, increased up to approximately 0.8 beyond the equilibrium conversion of 0.44 by extracting hydrogen in permeate stream. - Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Hiroshima University, 2000 - 2001Photocatalytic Membrane Reactors Using Porous Titanium Oxide MembranesA new type of photocatalytic reaction system in which the titanium dioxide itself is immobilized as a porous membrane capable of not only filtration but also photocatalytic reaction was proposed. The advantages of the system are (1) the forced transport of reactants by convection to TiO_2 membranes ; this would be quite effective for dilute-solution systems where diffusion of reactants limits the total reaction rate, (2) oxidation reaction on the outer and inner surface of porous TiO_2 membranes where high concentrations of OH radicals can be expected, and (3) the possibility to obtain permeate stream oxidized with OH radicals after one-pass permeation through the TiO_2 membranes. Moreover, it is possible to combine selectivity for reactants and products by controlled pore sizes of TiO_2 membranes. For the system of purification of polluted water, purified water would be obtained in the permeate stream by oxidation of pollutants while permeating through the TiO_2 membranes. The decomposition ratio of trichloroethylene (TCE) in permeate stream over that in feed stream was achieved to 60 %, when TGE solutions of approximately 1 ppm was fed to a porous titanium dioxide membrane, that is, the photocatalytic membrane reactor, under blacklight irradiation. On the other hand, no difference in concentration between feed and permeate was observed without the irradiation. Enhanced reactivity with membrane filtration was confirmed in a total recycle system, compared with reaction without filtration.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Encouragement of Young Scientists (A), Grant-in-Aid for Encouragement of Young Scientists (A), Hiroshima University, 2000 - 2001計算機支援によるガス分離用多孔性セラミック膜のin-situ細孔径評価法の開発1.透過相互作用エネルギーの評価 本研究では,細孔壁ポテンシャル場によりボルツマン分布則に従ってバルク気相とは密度が異なるガス状分子の細孔内ガス透過モデルを提案した.昨年度の研究により,その妥当性が示された微細孔内ガス透過モデルを用いて,多孔性シリカ膜における数種類のガスの透過速度の温度依存性より透過に有効な細孔表面と透過ガス分子との間に働く引力相互作用を算出すると,二酸化炭素分子の場合で数千から十数J/mol,窒素,アルゴン,酸素分子の場合で数百から数千J/molという値が得られた.膜材料として用いたシリカコロイドから作成した粉体試料において,二酸化炭素および窒素の吸着量を測定すると,同一平衡圧力下において,二酸化炭素の吸着量の方が窒素の吸着量に較べて数倍程度大きく,多孔性シリカ膜におけるガス透過実験から得られた相互作用との定性的傾向の一致が見られた.また,分子動力学法を用いた微細孔内のガス透過シミュレーションにおいても,透過速度から得られた細孔内ポテンシャル場の深さと,実際に設定したポテンシャルパラメータから算出されるポテンシャル場の大きさが定量的に一致し,透過モデルによる相互作用エネルギー評価法の妥当性が示された. 2.平均有効膜細孔径評価法の妥当性の検討 分子種と細孔径に依存する相互作用エネルギーの大きさから細孔径を直接的に評価することは困難であった.しかし,膜細孔内ポテンシャル場を考慮したガス透過モデル式は,細孔構造に由来するパラメータC_pを含み,その値と透過ガス分子径との間に相関関係があることが見いだされた.即ち,ガス透過速度の温度依存性に透過モデル式をフィッティングすることにより得られたC_pの値と透過分子径の関係より,透過に有効な平均細孔径の値を具体的に求めることができた.その結果を,既存の細孔径評価法である,分子プローブ法やナノパームポロメトリによる評価値と比較すると,5〜15Åの平均細孔径を有する複数の膜において良好な一致が見られた.これより,ガス分離に有効と考えられるミクロ孔を有する多孔性シリカ膜において,ガス透過に有効な平均細孔径を,ガス透過実験によりin-situでかつ簡便に評価可能であることが示された.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Hiroshima University, 1998 - 1999Permeation and separation of organic solvents by porous inorganic membranesThe purpose of the present study is to prepare porous ceramic membranes having various size of pore diameters and investigate the permeation performance of ceramic membranes. Ceramic membranes, which were prepared by sl-gel procedure, We have successfully prepared porous ceramic membranes from silica-zirconia composite colloidal sol solutions We have found that the transport mechanism of liquids through ceramic membrane having relatively large pores (larger than 70 nm) obeys the viscous flow mechanism, while the transport mechanism deviated from the viscous flow mechanism for membranes having smaller pore sizes. The reason was speculated that the affinity between permeating molecules and membrane surface and size plays an important role in determining permeation mechanism. Reverse osmosis experiments were carried out for several types of solutes in ethanol solutions. Solutes sued were n-hexane (CィイD26ィエD2HィイD214ィエD2, molecular weight 86), n-decane (CィイD210ィエD2HィイD222ィエD2, MW 142), and n-teradecane (CィイD214ィエD2HィイD230ィエD2, MW 142) as alkane solutes, and n-hexanol (CィイD26ィエD2HィイD213ィエD2OH, MW 102), n-octanol (CィイD28ィエD2HィイD217ィエD2OH, MW 130), n-decanol (CィイD210ィエD2HィイD221ィエD2OH, MW 1258) and alcohols. Solutes were rejected by porous membranes having pore size smaller than 1 nm. Rejection at 3 MPa and 60℃ ranges from 0.4 to 0.8, depending on the type of molecular weights. We have found that separation of organic molecular mixtures cane be separated by porous ceramic membrane in reverse osmosis. Analysis of transport mechanism suggested that diffusivity in pores was significantly affected by viscosity of solvents in pores.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), HIROSHIMA UNIVERSITY, 1996 - 1997Methane steam reforming by membrane reactor combined with hydrogen separation membranes at high temperatureThe purpose of the present study is preparation of hydrogen semi-permeable membranes by sol-gel method and the application of the membranes for methane steam reformig (CH_4=CO+3H_2, CO+H_2O=CO_2+H_2. Methane steam reforming is a reaction governed by the thermodynamic equilibrium where removing one of the products (H_2 or CO,CO_2) could shift the equilibrium conversion. Ceramic ultramicroporous membranes which have permselectivity towards hydrogen were found to be prepared by colloidal routes of silica-zirconia and silica, and found to have excellent stability at high temperature up to 550 ゚C ; however, the membrane permselectivity decreased with time in steam atmosphere because of further sintering of the separation layr. We have found that firing the coated membranes in steam atmosphere was effective to improve the stability at high temperature (500-570 ゚C) even in steam atmohsphere. Afterwards, the hydrogen semipermeable membranes were coated with nickel nitrate having catalytic activity for steam reforming to be converted to so-called catalytic membranes, and applied for the methane steam reforming. Without removing hydrogen in the permeate stream, that is, in conventional reaction system, the reaction conversion was 45 %, which was below the equilibrium conversion (65%) at 450 ゚C.By removing hydrogen from the permeate stream, the conversion increased up to 75%, which clearly shows that catalytic membrane system was effective to shif the apparent equilibrium of the conversion and improve the productivity of the reaction.
- 日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 広島大学, 1996 - 1996無機ナノフィルトレーション膜の開発と有機溶媒中の溶質分離への応用ゾル-ゲル法により逆浸透膜と限外濾過膜の中間の分画分子量を有する無機ナノ濾過膜(分画分子量200〜1000)を開発し,無機材料の耐溶剤性を生かした有機溶媒中の低・中分子量物質のナノ濾過分離を行うことを研究目的とする。 まず,シリカ-ジルコニアコロイドゾルの調整条件の検討を行い,5〜100nmの範囲で粒径のそろったゾルの調整方法を確立した。多孔質α-アルミナ管(孔径1μm)を支持管とし,種々の粒径のコロイドゾルを段階的にホットコーティングし,乾燥・焼成することで分離機能性を有するセラミック薄膜の製膜を行なった。 溶媒として種々の分子サイズのアルコール(メタノール,エタノール,プロパノール,ブタノール)を選定し,種々の細孔径(1, 2, 3, 8, 70nm)のシリカ-ジルコニア膜の溶媒単成分の透過実験を20〜60℃の範囲で行った。細孔径70nmの膜の透過流速は,粘度の逆数に対して直線となる粘性流れを示したのに対して,1〜8nmの膜は直線とはならず,粘性流れに従わないことを明らかとした。また,溶媒分子径が大きなほど,細孔径が小さくなるなど,溶媒透過の活性化エネルギーは増加したが,これは細孔との相互作用(分子ふるい性,吸着など)に依存していると考えられる。 低・中分子量物質のモデル溶質として,分子量200〜2000のポリエチレングリコールを用い,メタノール溶媒中での透過実験を行った。細孔径1, 2, 3nmの膜の分画分子量は300, 600, 1000であり,有機溶媒ナノ濾過膜の開発に成功した。また,2nmの膜を用い,エタノールおよびメタノール中での溶質阻止性を検討した結果,大きくは阻止率は変わらないものの,溶媒種に依存していることが示唆された。
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas, Grant-in-Aid for Scientific Research on Priority Areas, Hiroshima University, 1996 - 1996高温水素混合ガス分離用多孔性セラミック膜の開発本研究の目的は,高温下で安定な水素分離膜を作製し,水の熱化学分解反応を利用した水素製造プロセスであるUT3サイクルへの応用することである。UT3サイクルでは,反応物であるH_2-H_2-HBr混合系から,生成物である水素を300-500℃で効率的に分離精製する必要がある。したがって,分離対象には大量の水蒸気および酸であるHBrが存在するため,耐酸性に優れると考えられるシリカを膜材料として選定した。 種々のシリカ膜を用いてH_2-H_2O-HBr(モル比H_2=70-75%,HBr=1-2%)混合蒸気の分離実験を500℃で行った。H_2が優先透過し,H_2/HBrの分離係数は約100-500を示し,H_2/H_2Oは3-25程度の値を示した。透過係数の順序は,ヘリウム>水素>水>窒素>臭化水素であり,分子サイズに基づく分子ふるいによる分離性が示唆される。温度依存性を検討したところ,ヘリウム,水素単成分は活性化拡散を示し,単成分水素の透過係数は,H_2-H_2O-HBr混合気体での透過係数とよく一致した。水蒸気,および,臭化水素の透過係数の温度依存性は小さかった。また,混合蒸気の分離実験後に純成分気体の透過係数の測定を行ったところ,混合蒸気透過実験前後とほとんど変化しておらず,シリカ膜は酸に対して安定していることが示唆される。 水素/臭化水素透過係数比は水素/窒素透過係数比と強く相関しており,水素/水蒸気透過係数比はヘリウム/水素透過係数比と比較的よい相関を示していた。動的分子径がH_2=2.89,H_2O=2.65,HBr=3.5,N_2=3.64Åであり,HBrとN_2の分子サイズは比較的近接していることから,分離挙動は良い相関を示したと考えられる。臭化水素と窒素は,膜に残存する比較的大きな細孔やピンホール透過し,水蒸気,水素,ヘリウムは微細孔を膜透過していると考えられる。従って,より高選択の水素分離膜を開発するためには,ピンホールの少ない,微細な細孔とする必要があることが明らかとした。
- 多孔性無機膜における分子透過・分離機構に関する研究Competitive research funding