Mössbauer study of CO-precipitated Fischer-Tropsch iron catalysts

K. R P M Rao, Frank E. Huggins, Vikram Mahajan, Gerald P. Huffman, D. B. Bukur, V. U S Rao

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Mössbauer spectroscopy studies of precipitated Fischer-Tropsch (FT) iron catalysts, viz. 100 Fe/5 Cu/4.2 K/x SiO2, where x=0,8, 16, 24, 25, 40, or 100, have shown that reduction of the oxide precursor in CO gives rise to χ-carbide Fe5C2 whose amount decreases with an increase of SiO2 content. The χ-carbide is converted into magnetite Fe3O4 while catalyzing the FT synthesis reaction. A correlation between FT activity and the content of χ-carbide in the catalysts was found, which indicated that χ-carbide is active for FT synthesis reaction.

Original languageEnglish
Pages (from-to)1751-1754
Number of pages4
JournalHyperfine Interactions
Volume93
Issue number1
DOIs
Publication statusPublished - Dec 1994
Externally publishedYes

Fingerprint

Carbon Monoxide
carbides
Carbides
Iron
iron
catalysts
Fischer-Tropsch synthesis
Catalysts
Ferrosoferric Oxide
Magnetite
synthesis
magnetite
Oxides
Spectroscopy
oxides
spectroscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

Rao, K. R. P. M., Huggins, F. E., Mahajan, V., Huffman, G. P., Bukur, D. B., & Rao, V. U. S. (1994). Mössbauer study of CO-precipitated Fischer-Tropsch iron catalysts. Hyperfine Interactions, 93(1), 1751-1754. https://doi.org/10.1007/BF02072940

Mössbauer study of CO-precipitated Fischer-Tropsch iron catalysts. / Rao, K. R P M; Huggins, Frank E.; Mahajan, Vikram; Huffman, Gerald P.; Bukur, D. B.; Rao, V. U S.

In: Hyperfine Interactions, Vol. 93, No. 1, 12.1994, p. 1751-1754.

Research output: Contribution to journalArticle

Rao, KRPM, Huggins, FE, Mahajan, V, Huffman, GP, Bukur, DB & Rao, VUS 1994, 'Mössbauer study of CO-precipitated Fischer-Tropsch iron catalysts', Hyperfine Interactions, vol. 93, no. 1, pp. 1751-1754. https://doi.org/10.1007/BF02072940
Rao, K. R P M ; Huggins, Frank E. ; Mahajan, Vikram ; Huffman, Gerald P. ; Bukur, D. B. ; Rao, V. U S. / Mössbauer study of CO-precipitated Fischer-Tropsch iron catalysts. In: Hyperfine Interactions. 1994 ; Vol. 93, No. 1. pp. 1751-1754.
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