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Reaction Kinetics and Catalysis Letters

, Volume 49, Issue 1, pp 29–37 | Cite as

Formation and decomposition of thin rhodium oxide films

  • A. N. Salanov
  • V. I. Savchenko
Article

Abstract

Interaction of O2 with Rh (poly) and Rh (100) has been studied by Auger Electron Spectroscopy and thermal desorption method at O2 pressures of 10−5–103 Pa and at 400–1600 K. At P(O2)<10−5 Pa chemisorption of O2 occurs, at P(O2)=10−5–10−1 Pa surface oxides are formed, at P(O2)>1.0 Pa a bulk Rh2O3 oxide starts to grow. The growth of rhodium oxide film proceeds via the Cabrera-Mott mechanism. Its decomposition occurs via a mechanism including electron transfer across the oxide film, O2 desorption from the surface layer and rearrangement of the oxide layer.

Keywords

Oxide Spectroscopy Catalysis Surface Layer Electron Transfer 
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

© Akadémiai Kiadó 1993

Authors and Affiliations

  • A. N. Salanov
    • 1
  • V. I. Savchenko
    • 1
  1. 1.Boreskov Institute of catalysisNovosibirskRussia

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