Electronic interaction between supports and ruthenium catalysts for the hydrogenation of carbon monoxide

Tatsumi Ishihara, Kazuaki Harada, Koichi Eguchi, Hiromichi Arai

研究成果: Contribution to journalArticle

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The effect of oxide supports in hydrogenation of CO was investigated using Ru supported on metal oxides as catalysts. Activity for CO hydrogenation and product distribution depended on the electron affinity of the oxide supports. A support effect was also recognized in the adsorption state of hydrogen and carbon monoxide from temperature-programmed desorption (TPD) experiments. The support effect observed in this study seems to result from electronic interaction between Ru and support oxide, since the binding energy of Ru 3d 5 2 XPS peaks and the IR absorption frequency of linear-type NO depended on the electron affinity of the oxide support. The extent of charge transfer was represented by the electronegativity of support oxide in this study. The activity and the chain growth probability in CO hydrogenation are enhanced by using Ru on support oxides with high electronegativity because the deficient electron density of Ru weakened the CO adsorption and enhanced the concentration of hydrogen on catalyst surface.

元の言語英語
ページ(範囲)161-169
ページ数9
ジャーナルJournal of Catalysis
136
発行部数1
DOI
出版物ステータス出版済み - 7 1992

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

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