スラリー法による塩素含有マグネタイト触媒上での一酸化炭素水素化における添加物効果

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タイトル別名
  • Effects of additives on CO hydrogenation over chlorine-containing magnetite catalysts in slurry phase.

抄録

Effects of metal oxide addition on hydrogenation of carbon monoxide were investigated over chlorinecontaining magnetite (Cl/Fe3O4) catalysts in the slurry phases at 325°C, under 10atm, and with H2/CO=1. By addition of various metal oxides, the crystal size of magnetite and the XPS binding energy of the surface Fe decreased. A linear relationship between methane selectivity, or the ratio (P/O) of paraffin to olefin in the C2-C4 products, and electronegativity of M in the additives (MOx) was obtained. These results suggest that the added acidic oxides keep Fe of the catalysts in a low oxidation state and increase the hydrogenation activity of the catalysts. Thus, the role of chlorine in such catalysts with low P/O ratios was not explained in terms of its acidity, but in terms of its oxidative effect, maintaining the high oxidation state of Fe in the catalyst.

収録刊行物

  • 石油学会誌

    石油学会誌 33 (3), 147-151, 1990

    公益社団法人 石油学会

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