• P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

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    Electrochemical Reduction of High Pressure Carbon Dioxide on Metal Electrodes and Gas Diffusion Electrodes

    Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
    1995, v.8 no.4, pp.683-689
    Hara, Kohjiro
    Sakata, Tadayoshi
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    Abstract

    Electrochemical reduction of carbon dioxide under high pressure on Fe electrodes and a gas diffusion electrode containing Pt catalyst (Pt-GDE) had been investigated. Formic acid was formed on Fe electrode with a faradaic efficiency of 60% at a current density of <TEX>$120mA\;cm^{-2}$</TEX> under 30 atm of <TEX>$CO_2$</TEX>. Hydrocarbons such as <TEX>$CH_4$</TEX>, <TEX>$C_2H_6$</TEX>, <TEX>$C_3H_6$</TEX>, <TEX>$1-C_4H_8$</TEX>, and <TEX>$n-C_5H_{12}$</TEX> are also formed. The distribution of hydrocarbons followed well the Schultz-Flory distribution. <TEX>$CH_4$</TEX> was formed efficiently as the main reduction product on Pt-GDE.

    keywords
    High pressure carbon dioxide, Electrochemical reduction, Gas diffusion electrode


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