The Structure and Reactivity of Oxide Thin Films Grown on Transition Metal Surfaces

  • W. Weiß
  • A. B. Boffa
  • J. C. Dunphy
  • H. C. Galloway
  • M. B. Salmeron
  • G. A. Somorjai
Part of the Springer Series in Surface Sciences book series (SSSUR, volume 33)

Abstract

Epitaxially grown oxide and sulfide films [FeOx and ZrO2 on Pt(111), V2O3 on Au(111), S on flat and vicinal Mo(100) and Re(0001)] and oxide islands (TiO2, ZrO2, FeO, V2O3 on Rh) were produced on transition metal surfaces. Their structure has been studied by LEED-surface crystallography and by scanning tunneling microscopy. The reactivity of the oxide films is probed by chemisorption and by carrying out catalytic reactions at high pressures using these oxide-metal systems. The ordered FeOx films are unreactive for chemisorption. The sulfur layers order into a large number of complex structures as a function of coverage, thereby inducing restructuring of the metal substrate. The periphery of the oxide islands deposited on metals proved to be very reactive for the hydrogenation of molecules with polar C-O bonds (CO, CO2 and acetone).

Keywords

TiO2 Methane Sulfide Zirconium Acetone 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • W. Weiß
    • 1
  • A. B. Boffa
    • 1
  • J. C. Dunphy
    • 1
  • H. C. Galloway
    • 1
  • M. B. Salmeron
    • 1
  • G. A. Somorjai
    • 1
  1. 1.Department of Chemistry and Lawrence Berkeley LaboratoryUniversity of CaliforniaBerkeleyUSA

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