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Design of superhydrophobic organosilica structure and thin layer fabrication of highly selective alcohol permeable membrane

Research Project

Project/Area Number 20K21112
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 27:Chemical engineering and related fields
Research InstitutionHiroshima University

Principal Investigator

Kanezashi Masakoto  広島大学, 先進理工系科学研究科(工), 教授 (10467764)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsオルガノシリカ / 薄膜 / 超撥水性 / 吸着ブロッキング / 浸透気化特性 / 細孔構造制御
Outline of Research at the Start

本研究では,分子サイズが大きい分子が選択的に多孔膜を透過する分子選択性を付加した機能性高選択透過膜を創製し,バイオエタノール製造プロセスにおけるアルコール濃縮への応用を目指す。水よりも分子サイズが大きいアルコールを多孔膜では優先透過させることはできないため,吸着親和性とネットワークサイズを考慮したアモルファス材料の膜構造設計を提案する。サブナノ細孔における透過モデルで,液体透過性とネットワークサイズを評価し,ネットワーク構造の化学的・物理的性質とアルコール/水透過性を定量化する。

Outline of Final Research Achievements

In the present study, we investigated the effects of pore size and hydrophobicity of organosilica membranes on alcohol selective permeation property using pendant-type organosilica. The pendant-type organosilica structure was too small for alcohol molecules with molecular size of about 0.4-0.5 nm, so that these membranes showed H2O selective permeation properties.
F-doping was evaluated to control the loose network structure. F-doping into pendant-type organosilica greatly improved hydrophobicity, but the tendency for the pore size to increase with doped F concentration, which was observed with conventional F-doped bridged organosilica, was not observed.

Academic Significance and Societal Importance of the Research Achievements

地球レベルでの環境負荷が問題となる現在では,持続可能な社会を構築するために新規機能性材料や効率の良い生産方式の開発が極めて重要になる。膜分離工学は,国連が定めた,Sustainable Development Goals(SDGs,持続可能な開発目標)への貢献が大きい学問である。本研究では,薄膜化が可能で有機基の導入やアニオンドープにより親疎水性,細孔径制御が可能なアモルファスシリカを膜材料として用い,分子サイズが大きいアルコール分子が選択的に多孔膜を透過する分子選択性を付加した機能性高選択透過膜の創製について検討した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Effect of fluorine doping on the network pore structure of non-porous organosilica bis(triethoxysilyl)propane (BTESP) membranes for use in molecular separation2022

    • Author(s)
      Rana Ikram、Nagasawa Hiroki、Yamamoto Kazuki、Gunji Takahiro、Tsuru Toshinori、Kanezashi Masakoto
    • Journal Title

      Journal of Membrane Science

      Volume: 644 Pages: 120083-120083

    • DOI

      10.1016/j.memsci.2021.120083

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Effect of C/Si Ratio and Fluorine Doping on the Gas Permeation Properties of Pendant-Type and Bridged-Type Organosilica Membranes2022

    • Author(s)
      Rana Ikram、Nagaoka Takahiro、Nagasawa Hiroki、Tsuru Toshinori、Kanezashi Masakoto
    • Journal Title

      Membranes

      Volume: 12 Issue: 10 Pages: 991-991

    • DOI

      10.3390/membranes12100991

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improved performance of organosilica membranes for steam recovery at moderate-to-high temperatures via the use of a hydrothermally stable intermediate layer2021

    • Author(s)
      Moriyama Norihiro、Nagasawa Hiroki、Kanezashi Masakoto、Tsuru Toshinori
    • Journal Title

      Journal of Membrane Science

      Volume: 620 Pages: 118895-118895

    • DOI

      10.1016/j.memsci.2020.118895

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Steam recovery via nanoporous and subnanoporous organosilica membranes: The effects of pore structure and operating conditions2021

    • Author(s)
      Moriyama Norihiro、Nagasawa Hiroki、Kanezashi Masakoto、Tsuru Toshinori
    • Journal Title

      Separation and Purification Technology

      Volume: 275 Pages: 119191-119191

    • DOI

      10.1016/j.seppur.2021.119191

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Microporous Nickel-Coordinated Aminosilica Membranes for Improved Pervaporation Performance of Methanol/Toluene Separation2021

    • Author(s)
      Anggarini Ufafa、Yu Liang、Nagasawa Hiroki、Kanezashi Masakoto、Tsuru Toshinori
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 13 Issue: 19 Pages: 23247-23259

    • DOI

      10.1021/acsami.1c05012

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hydrocarbon permeation properties through microporous fluorine-doped organosilica membranes with controlled pore sizes2021

    • Author(s)
      Takenaka Mari、Nagasawa Hiroki、Tsuru Toshinori、Kanezashi Masakoto
    • Journal Title

      Journal of Membrane Science

      Volume: 619 Pages: 118787-118787

    • DOI

      10.1016/j.memsci.2020.118787

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Molecular-level Engineering of Hybrid Inorganic-Organic Membrane via Utilization of Unsaturated Precursors2022

    • Author(s)
      M. Kanezashi
    • Organizer
      13th Conference of Aseanian Membrane Society (AMS13)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 側鎖型オルガノシリカによる細孔径制御と透過特性評価2021

    • Author(s)
      長岡 嵩大, 金指 正言, 長澤 寛規, 都留 稔了
    • Organizer
      化学工学会第52回秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Microstructure engineering of ligand-modified ceramic membranes derived from network-forming precursors2021

    • Author(s)
      M. Kanezashi
    • Organizer
      14th Pacific Rim Conference of Ceramic Societies (PACRIM14)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 疎水性シリカ膜の作製と透過特性評価2020

    • Author(s)
      長岡 嵩大, 金指 正言, 長澤 寛規, 都留 稔了
    • Organizer
      日本膜学会第42年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Fドープによる側鎖型オルガノシリカ膜の細孔径制御と透過特性評価2020

    • Author(s)
      長岡 嵩大, 金指 正言, 長澤 寛規, 都留 稔了
    • Organizer
      膜シンポジウム2020
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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