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
Article

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.

Keywords

electrochemical promotion ethylene oxidation rhodium catalyst catalyst film thickness catalyst potential 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Fóti, G., Bolzonella, I., Bachelin, D., Comninellis, Ch. 2004J. Appl. Electrochem.349CrossRefGoogle Scholar
  2. 2.
    Wagner, C. 1970Adv. Catal.21323CrossRefGoogle Scholar
  3. 3.
    Vayenas, C.G., Lee, B., Michaels, J.N. 1980J. Catal.6637CrossRefGoogle Scholar
  4. 4.
    Vayenas, C.G., Bebelis, S., Pliangos, C., Brosda, S., Tsiplakides, D. 2001Electrochemical activation of catalysis. Promotion, electrochemical promotion and metal-support interactionKluwer Academic/Plenum PublishersNew YorkGoogle Scholar
  5. 5.
    Vayenas, C.G., Bebelis, S., Neophytides, S.G. 1988J. Phys. Chem.925083CrossRefGoogle Scholar
  6. 6.
    Cant, N.W., Hall, W.K. 1970J. Catal.16220CrossRefGoogle Scholar
  7. 7.
    Oh, S.H., Carpenter, J.E. 1983J. Catal.80472CrossRefGoogle Scholar
  8. 8.
    Kellog, G.L. 1986Surface Sci.171359CrossRefGoogle Scholar
  9. 9.
    Fóti, G., Bolzonella, I., Comninellis, Ch. 2003

    Electrochemical promotion of catalysis

    Vayenas, C.G.Conway, B.E.White, R.E.Gamboa-Adelco, M.E. eds. Modern Aspects of ElectrochemistryKluwer Academic/Plenum PublishersNew York191254
    CrossRefGoogle Scholar
  10. 10.
    Fóti, G., Wodiunig, S., Comninellis, Ch. 2000Electrochemical promotion of catalysts for gas phase reactions, in: Current Topics in ElectrochemistryResearch TrendsTrivandrum1Google Scholar
  11. 11.
    Baranova, E.A., Thursfield, A., Brosda, S., Fóti, G., Comninellis, Ch., Vayenas, C.G. 2005J. Electrochem. Soc.152E40CrossRefGoogle Scholar
  12. 12.
    Vayenas, C.G., Bebelis, S., Yentekakis, I.V., Lintz, H.G. 1992Catal. Today11303CrossRefGoogle Scholar
  13. 13.
    Vayenas, C.G., Jaksic, M.M., Bebelis, S.I., Neophytides, S.G. 1996

    The electrochemical activation of catalytic reactions

    Bockris, O’M.Conway, B.E.White, R.E. eds. Modern Aspects of ElectrochemistryPlenum PressNew York57202
    Google Scholar
  14. 14.
    Vayenas, C.G., Brosda, S., Pliangos, C. 2003J. Catal.216487CrossRefGoogle Scholar
  15. 15.
    Fóti, G., Stankovic, V., Bolzonella, I., Comninellis, Ch. 2002J. Electroanal. Chem.532191CrossRefGoogle Scholar
  16. 16.
    Riekert, L., Bunsenges, Ber. 1981Phys. Chem.85297Google Scholar
  17. 17.
    Pliangos, C., Yentekakis, I.V., Verykios, X.E., Vayenas, C.G. 1995J. Catal.154124CrossRefGoogle Scholar
  18. 18.
    Pliangos, C., Yentekakis, I.V., Papadakis, V.G., Vayenas, C.G., Verykios, X.E 1997Appl. Catal. B: Environ.14161CrossRefGoogle Scholar
  19. 19.
    Cavalca, C., Larsen, G., Vayenas, C.G., Haller, G. 1993J. Phys. Chem.976115CrossRefGoogle Scholar
  20. 20.
    Vayenas, C.G., Pitselis, G. 2001I&EC Research404209Google Scholar

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

Personalised recommendations