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Microwave-assisted catalytic process for adsorption/condensation and rapid thermal decomposition of low-concentration pollutants

Research Project

Project/Area Number 21H03635
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64020:Environmental load reduction and remediation-related
Research InstitutionKyushu University

Principal Investigator

Einaga Hisahiro  九州大学, 総合理工学研究院, 教授 (90356593)

Co-Investigator(Kenkyū-buntansha) 宮脇 仁  九州大学, 先導物質化学研究所, 准教授 (40505434)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsマイクロ波 / 複合酸化物 / 揮発性有機化合物 / 吸脱着プロセス / 完全酸化 / 触媒 / 炭素材料 / 吸着 / 触媒酸化 / 複合金属酸化物 / 汚染物質除去
Outline of Research at the Start

工場、事業所から排出される低濃度のVOCの処理の高効率化は環境保全の観点から喫緊の課題である。本研究では、炭素系材料とペロブスカイト型酸化物触媒の高いマイクロ波加熱特性を生かし、低濃度のVOCの吸脱着と濃縮、酸化分解過程を速やかに進行させる高効率VOC分解プロセスを開発し、その有効性について実証する。VOC吸脱着特性とマイクロ波加熱特性に寄与する炭素系材料の物性、マイクロ波加熱下でのVOC分解活性を支配するペロブスカイト型酸化物の物性を制御し、シングルモード、マルチモードマイクロ波リアクタでの機能を精査する。小規模のVOC発生源に対応できるVOC分解プロセスの構築に必要な基盤技術を確立する。

Outline of Final Research Achievements

Microwave-assisted heterogeneous catalytic oxidation of benzene was investigated over Cu-Mn spinel oxides. Microwave absorption by the Cu-Mn oxide is mainly driven by dielectric losses. Cu-Mn oxide exhibited superior activity to single oxides under microwave heating, demonstrating a lower apparent activation energy than that obtained under conventional heating. Microwave irradiation lowered the reaction temperature required for benzene oxidation compared with conventional heating. Transient tests were used to investigate the reactivity of oxygen species in the catalytic reaction, and the high reactivity of Cu-Mn spinel oxides was related to the high reactivity of lattice oxygen on the catalyst surface. The reactivity of the oxygen species was enhanced under microwave heating, leading to an enhanced benzene oxidation reaction. The combination of adsorption and catalytic oxidation processes using Cu-Mn spinel oxides and zeolites efficiently decomposed benzene at low concentrations.

Academic Significance and Societal Importance of the Research Achievements

工場、事業所から排出される低濃度の揮発性有機化合物(VOC)の処理の高効率化は環境保全の観点から喫緊の課題である。本研究では、複合酸化物触媒の高いマイクロ波加熱特性を生かし、VOCの吸脱着と濃縮、酸化分解過程を速やかに進行させる高効率汚染物質処理プロセスを開発し、その有効性について実証した。VOC吸着特性とマイクロ波照射下での昇温特性を両立するプロセスを構築し、高い昇温特性と酸化特性を有する酸化物触媒を開発し、これらの特性を生かすことで高効率VOC分解プロセスを構築した。この成果は、マイクロ波化学分野、触媒化学分野において重要な進歩であるとともに、環境技術への展開が見込まれる。

Report

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

    (21 results)

All 2024 2023 2022 2021 2020

All Journal Article (15 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 15 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Promoted catalytic oxidation of benzene over Mn-Ni solid solutions: Effect of metal oxygen bond parameters2024

    • Author(s)
      Guo Hao、Huang Haibao、Zhu Quan、Shangguan Wenfeng、Einaga Hisahiro、Zhang Yaxin
    • Journal Title

      Applied Catalysis A: General

      Volume: 671 Pages: 119575-119575

    • DOI

      10.1016/j.apcata.2024.119575

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of Cobalt Substitution into Copper-Manganese Oxides on Enhanced Benzene Oxidation Activity2023

    • Author(s)
      S. Ding, C. Zhu, H. Hojo, H. Einaga
    • Journal Title

      Applied Catalysis B: Environmental

      Volume: 323 Pages: 122099-122099

    • DOI

      10.1016/j.apcatb.2022.122099

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent trends in phenol synthesis by photocatalytic oxidation of benzene2023

    • Author(s)
      Wang Ziru、Hisahiro Einaga
    • Journal Title

      Dalton Transactions

      Volume: 52 Issue: 28 Pages: 9525-9540

    • DOI

      10.1039/d3dt01360j

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced Benzene Oxidation of Sintered Pd/γ-Al2O3 Catalysts by SO2 Treatment2023

    • Author(s)
      Shigenobu Saki、Sugiyama Takeharu、Hojo Hajime、Einaga Hisahiro
    • Journal Title

      Catalysis Letters

      Volume: 153 Issue: 11 Pages: 3423-3432

    • DOI

      10.1007/s10562-022-04233-7

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalytic degradation of benzene over non-thermal plasma coupled Co-Ni binary metal oxide nanosheet catalysts2023

    • Author(s)
      Jiang Zhi、Fang Dongxu、Liang Yuting、He Yaoyu、Einaga Hisahiro、Shangguan Wenfeng
    • Journal Title

      Journal of Environmental Sciences

      Volume: 132 Pages: 1-11

    • DOI

      10.1016/j.jes.2022.09.030

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] WO<sub>3</sub>‐based Materials for Photocatalytic and Photoelectrocatalytic Selective Oxidation Reactions2023

    • Author(s)
      Wang Ziru、Einaga Hisahiro
    • Journal Title

      ChemCatChem

      Volume: 15 Issue: 21

    • DOI

      10.1002/cctc.202300723

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microwave-assisted CO oxidation over LaNiO3 and Ce-promoted LaNiO32023

    • Author(s)
      Hamashima Tatsuya、Sugiyama Takeharu、Hojo Hajime、Einaga Hisahiro
    • Journal Title

      Journal of the Taiwan Institute of Chemical Engineers

      Volume: - Pages: 105041-105041

    • DOI

      10.1016/j.jtice.2023.105041

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalytic properties of LaNiO3 and Mn-modified LaNiO3 catalysts for oxidation of CO and benzene2023

    • Author(s)
      Hajime Hojo, Yuka Inohara, Ryo Ichitsubo, Hisahiro Einaga
    • Journal Title

      Catalysis Today

      Volume: 410 Pages: 127-134

    • DOI

      10.1016/j.cattod.2022.07.002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improved and Reduced Performance of Cu- and Ni-Substituted Co3O4Catalysts with Varying CoOh/CoTdand Co3+/Co2+Ratios for the Complete Catalytic Oxidation of VOCs2022

    • Author(s)
      Ying Ma, Lian Wang, Jinzhu Ma, Fudong Liu, Hisahiro Einaga, Hong He
    • Journal Title

      Environmental Science and Technology

      Volume: 56 Issue: 13 Pages: 9751-9761

    • DOI

      10.1021/acs.est.2c02450

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microwave-assisted removal of benzene with high efficiency on cobalt modified copper-manganese spinel oxides2022

    • Author(s)
      S. Ding, H. Hojo, H. Einaga
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 10 Issue: 5 Pages: 108212-108212

    • DOI

      10.1016/j.jece.2022.108212

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalytic Oxidation of CO to CO2 over CeO2-Supported Pd-Cu Catalysts under Dilute O2 Conditions2022

    • Author(s)
      Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Industrial & Engineering Chemistry Research

      Volume: 61 Pages: 15856-15865

    • DOI

      10.1021/acs.iecr.2c02199

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced Catalytic Performance of Spinel-type Cu-Mn Oxides for Benzene Oxidation under Microwave Irradiation2022

    • Author(s)
      S. Ding, C. Zhu, H. Hojo, H. Einaga
    • Journal Title

      Journal of Hazardous Materials

      Volume: 424 Pages: 127523-127523

    • DOI

      10.1016/j.jhazmat.2021.127523

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication and characterization of La-added MgFe2O4 as catalyst support for CO oxidation2021

    • Author(s)
      Akane Doi, Kenji Obata, Shigenori Matsushima, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Ceramics International

      Volume: 47 Issue: 23 Pages: 32786-32793

    • DOI

      10.1016/j.ceramint.2021.08.175

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] LaMnO3ペロブスカイト型酸化物のマイクロ波加熱昇温特性を支配する因子についての考察2021

    • Author(s)
      永長久寛,那須勇作,小田学
    • Journal Title

      日本電磁波エネルギー学会誌

      Volume: 5 Pages: 22-28

    • NAID

      130008128264

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalyst design of Pt/TiO2 microsphere for benzene oxidation under microwave irradiation2020

    • Author(s)
      Xin Liu, Siyu Ding, Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Catalysis Today

      Volume: - Pages: 285-291

    • DOI

      10.1016/j.cattod.2020.05.021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] マイクロ波を利用した触媒酸化反応2023

    • Author(s)
      永長久寛
    • Organizer
      触媒研究懇談会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Comparative Evaluation of Microwave Heating Performance across structurally diverse Tungsten Oxides2023

    • Author(s)
      Ni Zitao、Hojo Hajime、Einaga Hisahiro
    • Organizer
      The 9th Asia-Pacific Congress on Catalysis (APCAT-9)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Manganese oxide-supported catalysts for benzene oxidation by ozone2023

    • Author(s)
      Zheng Xuerui、Hojo Hajime、Einaga Hisahiro
    • Organizer
      The 9th Asia-Pacific Congress on Catalysis (APCAT-9)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マイクロ波照射下におけるLa-Ni-Ce系酸化物触媒の特性解明2023

    • Author(s)
      濱島達也、重信咲季、北條元、永長久寛
    • Organizer
      第132回触媒討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] マイクロ波を援用した低濃度VOCの触媒酸化反応2022

    • Author(s)
      丁思宇、北條 元、 永長久寛
    • Organizer
      第130回触媒討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Catalytic properties of manganese-based mixed metal oxides under microwave heating for air pollution control2021

    • Author(s)
      Hisahiro Einaga, Siyu Ding, Hajime Hojo
    • Organizer
      1st Japan-China Symposium on Catalysis (1stJCSC)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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