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Analysis for unique gas separation properties of semiclathrate hydrates and their thermodynamic conditions

Research Project

Project/Area Number 18K13710
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Muromachi Sanehiro  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (50711785)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsイオン性包接水和物 / 相変化 / ガス分離 / CO2 / 結晶 / ハイドレート / CO2回収 / セミクラスレートハイドレート / 相平衡条件 / 準包接水和物 / 相平衡 / CO2分離
Outline of Final Research Achievements

In this study, unique CO2 capture properties of semiclathrate hydrates were investigated by gas separation tests, equilibrium measurements and structure analyses. The experiments were performed on four major ionic substances which form semiclathrate hydrates. Experimental parameters were aqueous compositions of ionic substances, pressure and temperature conditions. Based on the tests under H2 + CO2 and CH4 + CO2 mixed gases, it was clarified that different gas capture properties can be obtained by semiclathrate hydrates formed with an ionic substance for the different mixed gas systems.

Academic Significance and Societal Importance of the Research Achievements

2050年のカーボンニュートラル達成を目指すにあたり、環境適合性の高いガス分離プロセス、CO2回収プロセスが求められている。イオン性包接水和物は常温常圧に近い温度圧力条件で動作するガス分離媒体であり、本研究によって多様なガス分離特性とその拡張可能性が示された。今後さらに研究を発展させることでイオン性包接水和物のガス分離特性を向上させ、経済性や環境負荷の低いガス分離プロセスの開発につながることが期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (3 results)

All 2021 2020 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] CO2 capture properties of semiclathrate hydrates formed with tetra-n-butylammonium and tetra-n-butylphosphonium salts from H2?+ CO2 mixed gas2021

    • Author(s)
      Muromachi Sanehiro
    • Journal Title

      Energy

      Volume: 223 Pages: 120015-120015

    • DOI

      10.1016/j.energy.2021.120015

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] セミクラスレートハイドレートのH2/CO2ガス分離特製2020

    • Author(s)
      室町実大
    • Organizer
      第 4 1 回日本熱物性シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] H2 + CO2 混合ガスのセミクラスレートハイドレ ート生成条件2018

    • Author(s)
      室町実大
    • Organizer
      第39回日本熱物性シンポジウム
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-12-25  

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