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Journal of Materials Science

, Volume 28, Issue 17, pp 4630–4636 | Cite as

Preparation of ultrafine Fe-Si-C powders in a radio-frequency thermal plasma and their catalytic properties

  • T. Kameyama
  • K. Sakanaka
  • H. Arakawa
  • A. Motoe
  • T. Tsunoda
  • K. Fukuda
Papers

Abstract

Ultrafine Fe-Si-C powders were prepared from mixed gases of SiH4-CH4-Fe(CO)5 using a newly developed thermal-plasma apparatus with a dual-radio-frequency-coupled-plasma-torch system. The phases of the powders prepared were classified into two groups; one composed of β-FeSi2 which was prepared by rapid quenching, while the other was composed of α-Fe, Fe3Si, Fe5Si3, FeSi, β-SiC and amorphous Si, which were prepared by slow quenching. The diameters of these powders were in the range 5–50 nm. The catalytic activities of these powders for Fischer-Tropsch synthesis were examined. The ultrafine β-FeSi2 powder was very active for the selective formation of olefin. On the other hand, powders of α-Fe, Fe3Si and Fe5Si3 were low in their selectivity but gave high CO conversion. Relations between the plasma conditions for the preparation of ultrafine Fe-Si-C powders and their catalytic properties are discussed.

Keywords

Polymer Catalytic Activity Catalytic Property Thermal Plasma Plasma Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • T. Kameyama
    • 1
  • K. Sakanaka
    • 1
  • H. Arakawa
    • 1
  • A. Motoe
    • 1
  • T. Tsunoda
    • 1
  • K. Fukuda
    • 1
  1. 1.National Chemical Laboratory for IndustryIbarakiJapan

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