MUROMACHI Sanehiro

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Associate Professor

Research Fields, Keywords

Crystal structure analysis, Semiclathrate hydrate, Methane hydrate, Gas hydrate, ガス分離プロセス , Thermophysical property of fluid


ORCID  https://orcid.org/0000-0001-6121-4780

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Education 【 display / non-display 】

  • 2011.4
    -
    2013.3

    Keio University   Doctor Course   Completed

  • 2008.4
    -
    2010.3

    Keio University   Master Course   Completed

  • 2004.4
    -
    2008.3

    Keio University   Graduated

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Degree 【 display / non-display 】

  • Doctor of Engineering - Keio University

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Campus Career 【 display / non-display 】

  • 2024.4
    　
    　

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Associate Professor  

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Academic Society Affiliations 【 display / non-display 】

  • 2023.8
    　
    　
     

    The Japan Society of Mechanical Engineers

  • 2015.9
    　
    　
     

    The Society of Chemical Engineers, Japan

  • 2013.10
    　
    　
     

    Japan Society of Thermophysical Properties

  • 2013
    -
    2018
     

    Japan Institute of Energy

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Research Areas 【 display / non-display 】

  • Nanotechnology/Materials / Inorganic materials and properties

  • Nanotechnology/Materials / Crystal engineering

  • Nanotechnology/Materials / Fundamental physical chemistry

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Papers 【 display / non-display 】

  • Microstructural investigation of morphology and kinetics of methane hydrate in the presence of tetrabutylammonium bromide: Insights for preservation and inhibition

    Satoshi Takeya, Sanehiro Muromachi, Michihiro Muraoka, Kiyofumi Suzuki, Norio Tenma, Keiichi Hirano … Show more authors

    The Journal of Chemical Physics   2024.4  [Reviewed]

    DOI

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

  • Discovery of the final primitive Frank-Kasper phase of clathrate hydrates

    Sanehiro Muromachi,Satoshi Takeya

    2024.3

    DOI

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    Language：English   Publishing type：Research paper (other science council materials etc.)   Joint Work  

  • Discovery of the final primitive Frank-Kasper phase of clathrate hydrates

    Sanehiro Muromachi,Satoshi Takeya

    2024.3

    DOI

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    Language：English   Publishing type：Research paper (other science council materials etc.)   Joint Work  

  • Biogas separation by semiclathrate hydrates formed with tetra-n-butylammonium and tetra-n-butylphosphonium salts

    Sanehiro Muromachi,Kosuke Ikeda,Kazuki Maesaka,Hiroyuki Miyamoto

    Energy   290   130176 - 130176   2024.3  [Reviewed]

    DOI

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV   Joint Work  

  • Guest size effects on a robust structure of semiclathrate hydrates and their thermophysical properties

    Sanehiro Muromachi,Satoshi Takeya

    Physical Chemistry Chemical Physics   2023.12  [Reviewed]

    DOI

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

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Review Papers 【 display / non-display 】

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Industrial Property Rights 【 display / non-display 】

  • 口腔摂取用CO2ハイドレートまたは該CO2ハイドレートを含む口腔摂取用複合物、及びそれらの製造方法

    辻 愛, 阿野 紀子, 神辺須 雅子, 江口 敬宏, 山本 佳孝, 室町 実大, 水谷 太郎, 山崎 裕一朗, 井上 貴昭, 下條 信威, 榎本 有希

    J-GLOBAL

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    Applicant：日本液炭株式会社, 国立大学法人 筑波大学

    Application no：JP2017041049  Date applied：2017.11.15

    Publication no：WO2018-096996  Date published：2018.5.31

    Patent/Registration no：特許第7058011号  Date registered：2022.4.13 

    Country of applicant：Domestic   Country of acquisition：Domestic

  • 支持部材

    加藤 永護 , 増田 佳文 , 谷村 将也 , 室町 実大

    J-GLOBAL

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    Applicant：三菱重工業株式会社

    Application no：特願2011-058785  Date applied：2011.3.17

    Announcement no：特開2012-193806  Date announced：2012.10.11

    Country of applicant：Domestic   Country of acquisition：Domestic

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Awards 【 display / non-display 】

  • Research Promotion Award for Young Researcher

    2015.5   Japan Society of Thermophysical Properties  

    Individual or group name of awards：Sanehiro Muromachi

  • Best Presenter and Promotion Award

    2015.2   Japan Institute of Energy  

    Individual or group name of awards：Sanehiro Muromachi

  • President Award

    2014.1   National Institute of Advanced Industrial Science and Technology (AIST)  

    Individual or group name of awards：Hideo Narita,Takao Ebinuma,Jiro Nagao,Yusuke Jin,Masato Kida,Yoshihiro Konno,Hideki Minagawa,Kosuke Egawa,Jun Yoneda,Yoshitaka Yamamoto,Sanehiro Muromachi,Akiko Ono

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • 非対称なイオン性ゲストから生成する準包接水和物のガス分離特性の解明

    Grant number：23K03723  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  Grant-in-Aid for Scientific Research(C)

    Investigator(s)：室町 実大

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    Authorship：Principal investigator  Grant type：Competitive

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

    Grant number：18K13710  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

    Investigator(s)：Muromachi Sanehiro

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    Authorship：Principal investigator  Grant type：Competitive

    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.

  • Thermodynamic properties and gas capacities of ionic clathrate hydrates for industrial application

    Grant number：26820069  2014.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists(B)

    Investigator(s)：Muromachi Sanehiro

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    Authorship：Principal investigator  Grant type：Competitive

    "Ionic clathrate hydrates (ICHs) are crystalline compounds which can form at around room temperature. They also incorporate small gases under their gas pressure. Based on these properties, industrial applications for air conditioning and gas separation are suggested. To form ICHs, ionic guest substances are necessary. There is potential to control the functional properties by designing the ionic guests. In this study, ICHs were formed by the tetra-n-butylammonium cation with various organic acid anions, and their properties were characterized.
    New ICHs were formed with hydroxycarboxylic anions. ICHs with the carboxylic anions were also formed under a gas pressure to incorporate it. Their formation conditions with CH4 or CO2 gas were measured, and the hydrate phases were identified by X-ray diffraction. Gas separation experiments were also implemented with a CH4 + CO2 mixed gas. From the results, knowledge for controlling the functional properties of ICHs was obtained."

  • オゾンをゲスト物質とするクラスレートハイドレートに関する研究

    Grant number：11J56572  2011 - 2012

    日本学術振興会  科学研究費助成事業  Grant-in-Aid for JSPS Fellows

    Investigator(s)：室町 実大

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    Authorship：Principal investigator  Grant type：Competitive

    "オゾンは通常、オゾン分子同士で反応し酸素へと分解してしまうため、従来その保存は困難であった。私は、この性質を用いてオゾン分子を一分子ずつ隔離し、長期間かつ高濃度でのオゾンの保存ができることを示し、クラスレートハイドレートを用いたオゾンの保存技術を実用化すべく研究を進めてきた。昨年度までにオゾンハイドレートの生成条件の測定を行い、実用的な温度圧力範囲におけるデータを報告した。本年度は生成条件を予測するための理論モデルの構築を中心に取り組んだ。ハイドレートが生成する際には、原料ガスの組成とハイドレート中に取り込まれるガスの組成は一致しない。そのため、定まった組成を持つ原料ガスから連続的にハイドレートを生成するプロセスにおいては、ガス相およびハイドレート相の組成は時々刻々と変化する。産業利用を目的とした際には、このような組成の変化は品質、効率などに極めて大きく影響するため、組成変化の理論的な予測はハイドレートの産業利用のためには必要不可欠となっている。オゾンハイドレートについても、オゾン、酸素、二酸化炭素からなる混合ガスを用いて生成する必要があるため、理論モデルの構築が求められる。
    理論モデルは、実験的に得られた生成条件を良く再現するように分子種に固有の分子間カパラメータを調整することで最適化される。昨年度に報告したオゾンハイドレートの生成条件データを用いてモデルの最適化を行った結果、実験値を良好に再現するモデルを開発することができた。今後、理論モデルによりオゾンハイドレートの生産プロセスについて具体的な検討がなされると期待される。本研究成果は近日中に国際誌に投稿する予定である。"

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Other external funds procured 【 display / non-display 】

  • Development of rapid themal analysis method under high gas pressure

    2021.6 - 2022.4

    Private Foundations  The Precise Measurement Technology Promotion Foundation

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    Authorship：Principal investigator 

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Presentations 【 display / non-display 】

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Committee Memberships 【 display / non-display 】

  • 9th international symposium on Molecular Thermodynamics and Molecular Simulation (MTMS '21) Organizing Committee

    2021.7 - 2021.9  Committee member

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    Committee type：Academic society 

  • Society of Chemical Engineers, Japan

    2018.4  Fundamental Thermophysical Properties Committee Member

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    Committee type：Academic society 

  • 8th international symposium on Molecular Thermodynamics and Molecular Simulation (MTMS '21) Organaizing Committee

    2017.11 - 2018.9  Committee member

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    Committee type：Academic society 

  • Japan Society of Thermophysical Properties

    2017.1 - 2018.12  Trustee

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    Committee type：Academic society 

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