Highly dispersed FeRu CO-conversion catalysts prepared from H2FeRu3(CO)13 and Fe2Ru(CO)12 bimetallic clusters on silicagel

László Guczi, Zoltán Schay, Károly Lázár, Anna Vizi, László Markó

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29 Citations (Scopus)

Abstract

Temperature programmed decomposition of H2FeRu3(CO)12 and Fe2Ru(CO)12 supported on Cab-O-Sil HS-5 reveals differences in the interaction between the complex and the support. Both in He and in H2 flow CO evolves in several steps and hydrocarbons are formed at higher temperatures. In He flow the amount of hydrocarbons is low, about 20-40% of the carbon remains in the catalyst and stabilizes its dispersion. Mössbauer spectra show that iron is oxidized to Fe2+ and Fe3+ and simultaneously H2 is formed. The final catalyst develops only during the initial hours in the CO + H2 reaction itself. This process results in a drop in the catalytic activity. Catalysts decomposed in He are more active than those decomposed in H2.

Original languageEnglish
Pages (from-to)516-522
Number of pages7
JournalSurface Science
Volume106
Issue number1-3
DOIs
Publication statusPublished - May 1 1981

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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