Topics in Catalysis

, Volume 44, Issue 3, pp 355–360 | Cite as

Electrochemical modification of the catalytic activity of TiO2/YSZ supported rhodium films

  • E. A. Baranova
  • G. Fóti
  • H. Jotterand
  • Ch. Comninellis

The electrochemical activation of ethylene oxidation was studied over rhodium catalysts of different thickness (40, 100 and 160 nm) sputtered on top of a thin layer of TiO2 deposited on YSZ. The strong relationship between catalytic activity and oxidation state of rhodium was confirmed. Under open-circuit operation the catalyst potential appears as a suitable indicator of the surface oxidation state of rhodium allowing a prediction of the catalytic behavior from solid electrolyte potentiometric measurements. Under closed-circuit conditions the catalyst potential was used as a tool to tune the catalytic activity of rhodium which showed increasing promotional efficiency with decreasing catalyst film thickness.


electrochemical promotion ethylene oxidation rhodium catalyst catalyst film thickness catalyst potential 


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • E. A. Baranova
    • 1
  • G. Fóti
    • 1
  • H. Jotterand
    • 2
  • Ch. Comninellis
    • 1
  1. 1.Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneLausanneSwitzerland
  2. 2.Institute of Physics of the Complex MatterEcole Polytechnique Fédérale de LausanneLausanneSwitzerland

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