Catalytic Activities of Platinum- and Nickel-Doped Magnesium Oxide for Steam Reforming of Ethanol

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  • MORITA Masayuki
    Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi University
  • SATO Akio
    Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi University
  • MATSUDA Yoshiharu
    Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi University

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Other Title
  • 酸化マグネシウム担持白金およびニッケル触媒のエタノール水蒸気改質活性
  • サンカ マグネシウム タンジ ハッキン オヨビ ニッケル ショクバイ ノ エタ

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Description

Catalytic activity and reaction selectivity of platinum- and nickel-doped magnesium oxide (Pt/MgO, Ni/MgO) prepared by a wet method have been investigated for steam reforming of ethanol (EtOH) in connection with fuel cell systems. A fixed-bed flow type tubular reactor was used for the catalytic reaction at the temperature range of 250-500 °C (523-773 K). The steam reforming of ethanol on Pt/Mg0 yielded CH4, CO, and CH8CHO as well as main products, H2 and CO. The effect of Pt loading on the catalytic activity became samll for the catalysts with higher Pt contents (ca.2 wt%), especially at lower reaction temperature (350 °C). A maximum H2 evolution rate was observed when the 1120/Et0H molar ratio in the feed was unity. The reaction on Ni/MgO gave higher selectivity for H2 and CO formation, but the total catalytic activity of Ni/MgO was lower than that of Pt/MgO. The activity loss was caused by deposition of carbon on Ni/MgO during the initial period of the reaction. The formation of CH4 was slightly suppressed by using a mixture of Pt/MgO and Ni/MgO.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1993 (2), 164-169, 1993-02-10

    The Chemical Society of Japan

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