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

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

doi:10.1016/S0926-860X(01)00948-6

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

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

Molecular and Biochemical Systems Engineering

Research output: Contribution to journal › Article › peer-review

62 Citations (Scopus)

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 language	English
Pages (from-to)	81-89
Number of pages	9
Journal	Applied Catalysis A: General
Volume	231
Issue number	1-2
DOIs	https://doi.org/10.1016/S0926-860X(01)00948-6
Publication status	Published - May 10 2002

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology

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title = "Catalytic properties of Fe/SiO2 catalysts prepared using microemulsion for CO hydrogenation",

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.",

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AU - Hayashi, Hiroki

AU - Chen, Li Zhe

AU - Tago, Teruoki

AU - Kishida, Masahiro

AU - Wakabayashi, Katsuhiko

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N2 - 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.

AB - 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.

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