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1991 Fiscal Year Final Research Report Summary

Development of the system of selective alcohol production from carbon dioxide

Research Project

Project/Area Number 02805107
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Synthetic chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

HASHIMOTO Kazuhito  The University of Tokyo, Fac. Engineer., Associate Professor, 工学部, 助教授 (00172859)

Co-Investigator(Kenkyū-buntansha) KATO Takashi  The University of Tokyo, Inst. of Ind. Sci., Assistant Professor, 生産技術研究所, 講師 (70214377)
Project Period (FY) 1990 – 1991
Keywordscarbon dioxide / Alcohol / Compound Semiconductor / Hydrogen absorbing electrode / Surface design
Research Abstract

The photoelectrochemical reduction of CO_2 has been examined on the amorphous p-SiC thin film electrode, prepared by Mercury sensitized Photo-CVD, in aqueous electrolytes at room temperature. Although 80% of the photocurrent was used for reduction of proton(hydrogen production), Methanol was selectively obtained as the CO_2 reduction product with a current efficiency of up to 18% at -1.5V vs SCE. Small quantities of CO and CH_4 were also obtained.
The electrochemical Carbon dioxide reduction was also c. -)ne using one of the hydrogen-storing materials, Pd. The faradaic efficiencies for CO and HCOOH production increased after hydrogen was absorbed into the Pd electrode. This was due to the increase of the electivity for CO_2 reduction resulting from suppression of hydrogen production and/or the increase of actual reaction rates for CO and HCOOH production.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] J.Luo: "Photoelectrochemical Reduction of Carbon Dioxide at Illuminated p-type Copper Oxide Electrode" Ber.Bunsenges.Phys.Chem.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Hashimoto: "Methanol Production from Carbon Dioxide at Illuminated p-type Amorphous SiC Film Electrode" J.Electroanal.Chem.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 橋本 和仁: "半導体光電極の設計:アルコ-ルへの選択的炭酸ガス還元の試み" 光化学. 15. 26-32 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Palladium Electrodes:The Effect of Hydrogen Absorption on Electrochemical Activity" J.Electroanal.Chem.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Luo: " "Photoelectrochemical reduction of carbon dioxide at illuminated p-type copper oxide electrode"" Ber. Bunseriges. Plys. Chem.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Hashimoto: " "Methanol production from carbon dioxide at illuminated p-type umorphous sic film electrode"" J. Electroanal. Chem.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Hashimoto: " "Photoelectro chemical CO_2 Reduction"" Photochemistry. 15. 26-32 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ohkawa: " "Electrochemical Reduction of Carbon dioxide on Pd electrode : The effect of hydrogen absorption on electrochemical activity"" J. Eleetroanal. Chem.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-16  

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