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Basic theory of low entropy reaction space based on numerical and experimental investigations

Planned Research

Project AreaHighly organized catalytic reaction chemistry realized by low entropy reaction space
Project/Area Number 21H05083
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (II)
Research InstitutionKyushu University

Principal Investigator

Asano Shusaku  九州大学, 先導物質化学研究所, 助教 (30827522)

Co-Investigator(Kenkyū-buntansha) 工藤 真二  九州大学, 先導物質化学研究所, 准教授 (70588889)
Project Period (FY) 2021-08-23 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥32,760,000 (Direct Cost: ¥25,200,000、Indirect Cost: ¥7,560,000)
Fiscal Year 2023: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Fiscal Year 2022: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Fiscal Year 2021: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Keywords数値流体力学計算 / フローリアクター / 反応装置設計 / 不均一触媒 / 水素化反応 / 速度解析 / 活性化パラメーター / 反応速度解析
Outline of Research at the Start

フラスコや反応窯で行うバッチ式の化学反応に比べ、反応管や触媒充填カラムに原料溶液を送液して行うフロー式の反応では、優れた反応選択性や反応速度が得られることが多い。本研究では、フロー式の反応に関し、反応の活性化エントロピーに着目して、定量的・統一的な理論の構築を試みる。数値流体力学計算で流動と反応の関係を整理し、活性化エントロピー・反応速度・流動状態を関連づけ、フロー式装置の設計論へ展開する。

Outline of Final Research Achievements

We investigated how the ordered structure of the flow state inside a flow reactor affects the rate and selectivity of chemical reactions, and how this can be controlled. First, we focused on the symmetry of the concentration distribution and introduced the viewpoint of mixing mode. Second, we proved that in a fine catalyst packed-bed reactor, liquid is held in a column by capillary forces and can maintain contact with the gas. Furthermore, we discussed what phenomena occur under turbulent flow, which can be described as a high-entropy space, and proposed a method that can reduce undesirable turbulence while taking advantage of the excellent mixing characteristics of turbulence.

Academic Significance and Societal Importance of the Research Achievements

混合時間と高速反応の成績については、線形的な「混合が速いほど、反応成績が向上する」という考え方が既往の研究の大前提にあった。本研究では、この前提を疑い、反応空間の非対称性が反応成績に影響を及ぼしていることを実証した。また、気液固触媒反応器での3相接触を証明した。更に、乱流下のカオス状流れを、流量比をずらすという単純な方法で制御し、混合性能とその安定性を飛躍的に向上させることにも成功した。いずれについても、反応装置内の秩序構造(エントロピー)と化学反応の関連を見出し、工学的な設計につなげたという点で、類を見ない研究であると自負している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (15 results)

All 2024 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (3 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Burapha University(タイ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Assessing mixing uniformity in microreactors via in-line spectroscopy2024

    • Author(s)
      Asano Shusaku、Kudo Shinji、Maki Taisuke、Muranaka Yosuke、Mae Kazuhiro、Hayashi Jun-ichiro
    • Journal Title

      Chinese Journal of Chemical Engineering

      Volume: 66 Pages: 119-124

    • DOI

      10.1016/j.cjche.2023.09.009

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chaotic-flow-driven mixing in T- and V-shaped micromixers2024

    • Author(s)
      Asano Shusaku、Kudo Shinji、Hayashi Jun-ichiro
    • Journal Title

      Chemical Engineering Journal

      Volume: 489 Pages: 151183-151183

    • DOI

      10.1016/j.cej.2024.151183

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanistic origins of accelerated hydrogenation of mixed alkylaromatics by synchronised adsorption over Rh/SiO<sub>2</sub>2023

    • Author(s)
      Cherkasov Nikolay、Asano Shusaku、Tsuji Yuta、Okazawa Kazuki、Yoshizawa Kazunari、Miyamura Hiroyuki、Hayashi Jun-ichiro、Kunitsa Alexander A.、Jackson S. David
    • Journal Title

      Reaction Chemistry &amp; Engineering

      Volume: 8 Issue: 6 Pages: 1341-1348

    • DOI

      10.1039/d3re00032j

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of gas-solid direct contact on gas-liquid-solid reaction performance in a flow reactor2023

    • Author(s)
      Asano Shusaku、Miyamura Hiroyuki、Matsushita Mizuki、Kudo Shinji、Kobayashi Sh?、Hayashi Jun-ichiro
    • Journal Title

      Journal of Flow Chemistry

      Volume: 14 Issue: 1 Pages: 329-335

    • DOI

      10.1007/s41981-023-00295-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Incorporative mixing in microreactors: Influence on reactions and importance of inlet designation2023

    • Author(s)
      Asano Shusaku、Maki Taisuke、Inoue Shogo、Sogo Sumito、Furuta Masashi、Watanabe Satoshi、Muranaka Yosuke、Kudo Shinji、Hayashi Jun-ichiro、Mae Kazuhiro
    • Journal Title

      Chemical Engineering Journal

      Volume: 451 Pages: 138942-138942

    • DOI

      10.1016/j.cej.2022.138942

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kinetic Modeling of an Enzyme Membrane Reactor for the Selective Production of Oligosaccharides2022

    • Author(s)
      Asano Shusaku、Muranaka Yosuke、Maki Taisuke、Ikeda Koki、Mae Kazuhiro
    • Journal Title

      Fermentation

      Volume: 8 Issue: 12 Pages: 701-701

    • DOI

      10.3390/fermentation8120701

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Homogeneous catalyst modifier for alkyne semi-hydrogenation: systematic screening in an automated flow reactor and computational study on mechanisms2022

    • Author(s)
      Asano Shusaku、Adams Samuel J.、Tsuji Yuta、Yoshizawa Kazunari、Tahara Atsushi、Hayashi Jun-ichiro、Cherkasov Nikolay
    • Journal Title

      Reaction Chemistry & Engineering

      Volume: 7 Issue: 8 Pages: 1818-1826

    • DOI

      10.1039/d2re00147k

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Catalytic deep eutectic solvent for levoglucosenone production by pyrolysis of cellulose2022

    • Author(s)
      Saragai Shouya、Kudo Shinji、Sperry Jonathan、Ashik U.P.M.、Asano Shusaku、Hayashi Jun-ichiro
    • Journal Title

      Bioresource Technology

      Volume: 344 Pages: 126323-126323

    • DOI

      10.1016/j.biortech.2021.126323

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Mechanistic Origins of the Accelerated Hydrogenation in Flow2023

    • Author(s)
      Shusaku Asano
    • Organizer
      Flow Chemistry Asia
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Investigation of mixing and reaction in microreactors utilizing computational fluid dynamics2023

    • Author(s)
      Shusaku Asano
    • Organizer
      CES-CHEM 2023 meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Incorporative Mixing in Microreactors: Influence on Reactions and Importance of Inlet Designation2022

    • Author(s)
      Shusaku Asano
    • Organizer
      Flow Chemistry Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] CES-CHEM 2023 Meeting2023

    • Related Report
      2023 Annual Research Report

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Published: 2021-10-22   Modified: 2025-01-30  

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