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Hyperfine Interactions

, Volume 57, Issue 1–4, pp 1801–1808 | Cite as

Mössbauer emission and absorption studies on the reduction behaviour of supported Co, Co−Mo, Fe and Fe−Mo hydrotreating catalysts

  • M. W. J. Crajé
  • R. H. Hadders
  • W. L. T. M. Ramselaar
  • E. Gerkema
  • V. H. J. De Beer
  • A. M. Van Der Kraan
Surface Phenomena, Catalysis, Corrosion

Abstract

In carbon-supported Fe−Mo catalysts an Fe−Mo alloy can be formed during reduction in H2 at 673 K. In carbon-supported Co−Mo catalysts, instead of the formation of a Co−Mo alloy segregation of metallic Co is observed.

In alumina-supported Fe and Fe−Mo catalysts, the interaction between the alumina support and the catalyst particles hinders reduction of the ions to an Fe0 phase. Most probably a surface “Fe(II)-aluminate” is formed.

Keywords

Alumina Thin Film Catalyst Particle Absorption Study Hydrotreating 
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

© J.C. Baltzer A.G. Scientific Publishing Company 1990

Authors and Affiliations

  • M. W. J. Crajé
    • 1
  • R. H. Hadders
    • 1
  • W. L. T. M. Ramselaar
    • 1
  • E. Gerkema
    • 1
  • V. H. J. De Beer
    • 2
  • A. M. Van Der Kraan
    • 1
  1. 1.Interfacultair Reactor InstituutDelft University of TechnologyDelftThe Netherlands
  2. 2.Laboratory for Inorganic Chemistry and CatalysisEindhoven University of TechnologyEindhovenThe Netherlands

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