Catalytic properties of Fe/SiO2 catalysts prepared using microemulsion for CO hydrogenation

Hiroki Hayashi, Li Zhe Chen, Teruoki Tago, Masahiro Kishida, Katsuhiko Wakabayashi

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Abstract

The Fe/SiO2 catalysts prepared using water-in-oil (w/o) microemulsions exhibited more than two-fold CO conversions as compared to the impregnated catalysts in CO hydrogenation. The catalysts produced the C2+ oxygenates with an extremely high selectivity of <40 C mol%, while the impregnated catalysts produced mainly hydrocarbons. The TPR results showed that Fe particles in the catalysts prepared using w/o microemulsion were difficult to reduce and that a considerable amount of FeO remained in the catalyst even after the reduction with H2 at 873 K for 10 h. The superior activity of the catalysts for the C2+ oxygenates synthesis was attributed to the existence of the stable Fe oxide species under the reaction condition.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalApplied Catalysis A: General
Volume231
Issue number1-2
DOIs
Publication statusPublished - May 10 2002

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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