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2006 Fiscal Year Final Research Report Summary

Direct Synthesis of hydrogen peroxide solution by the membrane reactor

Research Project

Project/Area Number 16360400
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Catalyst/Resource chemical process
Research InstitutionTokyo Institute of Technology

Principal Investigator

YAMANAKA Ichiro  Tokyo Institute of Technology, Department of Applied Chemistry, Associate Professor, 理工学研究科, 助教授 (90240051)

Project Period (FY) 2004 – 2006
KeywordsHydrogen Peroxide / Fuel Cell / Membrane Reactor / Electrocatalysis / Reduction of O_2 / Mn Porphyrin / Gas Diffusion Electrode / Carbon
Research Abstract

Hydrogen peroxide is expected a major oxidant for Green Sustainable Chemistry. Price of H_2O_2 is expensive to use for chemical process. Most of all H_2O_2 is manufactured by the anthraquinone process through multi-steps operation with a large amount of energy consumption. Therefore, it has been desired for development of new direct catalytic synthesis method of H_2O_2.
We have found the effective H_2/O_2 fuel cell method for H_2O_2 synthesis. Reduction of O_2 to H_2O_2 at the three-phase boundary (gaseous O_2, aqueous electrolyte, and solid cathode) is the character of the fuel cell method. O_2 gas is directly supplied to the active site at the three-phase boundary. Therefore, the reduction of O_2 to H_2O_2 is accelerated to compare with the successive reduction of H_2O_2. We have performed the efficient production of H_2O_2 of 7 wt % with a 94% current efficiency by using the [VGCF+XC72+PTFE] cathode and NaOH electrolyte (2 mol L^<-1>). When we chose acid electrolyte (0.5 mol L^<-1> H_2SO_4) and the [AC+VGCF+PTFE] cathode, the maximum concentration of H_2O_2 was 1.1 wt %. Electrocatalysts prepared from Fe- and Co-porphyrin or phthalocyanine on carbon by heat-treatment in inert gas have been expected as none-precious metal electrocatalyst for four-electrons reduction of O_2 to H_2O for PEMFC. Our idea was that un-effective metal-porphyrin derivatives would be candidate for the H_2O_2 formation by our fuel cell method. Mn-porphyrin supported on active carbon, which was activated by heat-treatment in Ar, electrochemically catalyzed reduction of O_2 to H_2O_2 by the H_2/O_2 fuel cell method. The electrocatalytic activities were strongly dependent on the heat-treatment temperatures. The maximum H2O2 concentration of 3.5 wt % with 47% current efficiency was obtained for the catalyst treated at 450℃ and a TON (Mn) for the H_2O_2 formation was over 1000 h^<-1>.

  • Research Products

    (13 results)

All 2007 2006

All Journal Article (12 results) Book (1 results)

  • [Journal Article] Simple Vanadium(V) Catalyst for Oxidation of Alkane with O_2 under Mild Conditions2007

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Chemistry Letters 36・1

      Pages: 114-115

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Simple Vanadium(V) Catalyst for Oxidation of Alkane with O_2 under Mild Conditions.2007

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Chemistry Letters 36

      Pages: 114-115

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electrocatalysis of Heat-treated Mn-Porphyrin/Carbon Cathode for Synthesis of H_2O_2 Acid Solutions by H_2/O_2 Fuel Cell Method2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Chemistry Letters 35・12

      Pages: 1330-1331

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Direct Oxidation of Dry Methane by Pd-Ni Synergy Catalyst Supported on Lanthanum Chromaite Based Anode2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Advance in Science and Technology 45

      Pages: 2067-2076

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] High Efficient Electrochemical Carbonylation of Methanol to Dimethyl Carbonate by Br_2/Br^- Mediator System over Pd/C Anode2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Journal of Electrochemical Society 153

      Pages: D68-D73

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Active Control of Catalysis and Products Selectivity by a Fuel Cell System2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Research on Chemical Intermediates 32

      Pages: 373-385

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 燃料電池型電解法による過酸化水素製造法と酸化反応2006

    • Author(s)
      山中 一郎
    • Journal Title

      ファインケミカル 36・3

      Pages: 5-12

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Electrocatalysis of Heat-treated Mn-Porphyrin/Carbon Cathode for Synthesis of H_2O_2 Acid Solutions by H_2/O_2 Fuel Cell Method.2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Chemistry Letters 12

      Pages: 1330-1331

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Direct Oxidation of Dry Methane by Pd-Ni Synergy Catalyst Supported on Lanthanum Chromaite Based Anode.2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Advance in Science and Technology 45

      Pages: 2067-2076

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] High Efficient Electrochemical Carbonylation of Methanol to Dimethyl Carbonate by Br_2/Br^- Mediator System over Pd/C Anode.2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Journal of Electrochemical Society 153

      Pages: D68-D73

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Active Control of Catalysis and Products Selectivity by a Fuel Cell System.2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Research on Chemical Intermediates 32

      Pages: 373-385

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electrochemical Synthesis of H_2O_2 and Oxidation by fuel cell reactor.2006

    • Author(s)
      Ichiro Yamanaka
    • Journal Title

      Fine Chemical 36

      Pages: 5-12

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 化学工学の進歩40進化する反応工学-持続可能社会に向けて2006

    • Author(s)
      山 中 一 郎
    • Total Pages
      191
    • Publisher
      槇書店
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2008-05-27  

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