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


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.


Oxide Spectroscopy Catalysis Surface Layer Electron Transfer 
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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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