Advertisement

Journal of Applied Electrochemistry

, Volume 29, Issue 10, pp 1185–1190 | Cite as

Oxidation of CO on hydrogen-loaded palladium

  • O. YÉPEZ
  • B.R. Scharifker
Article

Abstract

The oxidation of CO adsorbed on the surface of palladium electrodes loaded with different amounts of hydrogen was studied by single potential alteration infrared reflectance spectroscopy (SPAIRS). In the absence of hydrogen, only CO2 was detected during anodic oxidation of CO. Adsorption of CO in the presence of hydrogen in palladium led to a more negative onset of its electrooxidation, and the formation of other products, such as ethanol and formaldehyde, as well as CO_2. The results indicate that hydrogen occluded in palladium contributes to the displacement of carbon monoxide from the interface; this may assist in the continual electrooxidation of organic compounds at palladium electrodes.

carbon monoxide hydrogen infrared spectroscopy palladium poisoning 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. Parsons and T. Vandernoot, J. Electroanal. Chem. 257 (1988) 9.Google Scholar
  2. 2.
    K. Machida and M. Enyo, J. Electrochem. Soc. 134 (1987) 1472.Google Scholar
  3. 3.
    J.O'M. Bockris and S.U.M. Khan, ‘Surface Electrochemistry, a Molecular Level Approach’ (Plenum, New York, 1993), p. 268.Google Scholar
  4. 4.
    F.A. Lewis, ‘The Palladium Hydrogen System’ (Academic Press, London, 1967).Google Scholar
  5. 5.
    M.W. Breiter, J. Electroanal. Chem. 109 (1980) 243, 253.Google Scholar
  6. 6.
    M.W. Breiter, J. Electroanal. Chem. 180 (1984) 25.Google Scholar
  7. 7.
    A. Czerwinski, S. Zamponi and R. Marassi, J. Electroanal. Chem. 304 (1991) 233.Google Scholar
  8. 8.
    A. Czerwinski, J. Electroanal. Chem. 379 (1994) 487.Google Scholar
  9. 9.
    A. Bewick, J. Electroanal. Chem. 150 (1983) 481.Google Scholar
  10. 10.
    K. Kunimatsu, J. Phys. Chem. 88 (1984) 2195.Google Scholar
  11. 11.
    Y. Ikezawa, H. Saito, M. Yamazaki and G. Toda, J. Electroanal. Chem. 245 (1988) 245.Google Scholar
  12. 12.
    K. Yoshioka, F. Kitamura, M. Takeda, M. Takahashi and M. Ito, Surf. Sci. 227 (1990) 90.Google Scholar
  13. 13.
    L.-W.H. Leung and M.J. Weaver, J. Am. Chem. Soc. 109 (1987) 5113.Google Scholar
  14. 14.
    L.-W.H. Leung and M.J. Weaver, Langmuir 6 (1990) 323.Google Scholar
  15. 15.
    J.A. Caram and C. Gutirrez, J. Electroanal. Chem. 344 (1993) 313.Google Scholar
  16. 16.
    W. Ayers, US Patent 4 547 273 (1985).Google Scholar
  17. 17.
    W.M. Ayers and M. Farley, ACS Symp. Ser. 363 (1988) 147.Google Scholar
  18. 18.
    H. Yoshitake, K. Takahashi and K. Ota, J. Chem. Soc., Faraday Trans. 90 (1994) 155.Google Scholar
  19. 19.
    K. Ohkawa, K. Hashimoto, A. Fujishima, Y. Noguchi y S. Nakayama, J. Electroanal. Chem. 345 (1993) 445.Google Scholar
  20. 20.
    S.C. Chang and M.J. Weaver, J. Chem. Phys. 92 (1990) 4582.Google Scholar
  21. 21.
    D.S. Corrigan and M.J. Weaver, J. Electroanal. Chem. 241 (1988) 143.Google Scholar
  22. 22.
    D.S. Corrigan and M.J. Weaver, J. Phys. Chem. 90 (1986) 5300.Google Scholar
  23. 23.
    L-W.H. Leung, A. Wieckowski, M.J. Weaver, J. Phys. Chem. 92 (1988) 6985.Google Scholar
  24. 24.
    R.R. Adzic, M.D. Spasojevic and A.R. Despic, J. Electroanal. Chem. 92 (1978) 31.Google Scholar
  25. 25.
    R.R. Griffiths, in ‘Chemical Analysis’, Vol. 43 (edited by P.J. Elvins, J.D. Winefordner and I.M. Kolthoff), (J. Wiley & Sons, New York, 1975), p. 249.Google Scholar
  26. 26.
    R.M. Silverstein, G.C. Bassler and T.C. Morrill, ‘Spectrometric Identification of Organic Compounds’, 4th edn (J. Wiley & Sons, New York, 1981), p. 171.Google Scholar
  27. 27.
    B. Scharifker, O. Yepez, J.C. De Jesus and M.M. Ramirez de Agudelo, US Patent 5 051 156 (1991).Google Scholar
  28. 28.
    R. Eisenberg and D. Hendriksen, in ‘Advances in Catalysis’, Vol. 28</del> (edited by E. Pines and P. Weisz), (Academic Press, New York, 1979) p. 79.Google Scholar
  29. 29.
    J.O'M. Bockris and S.U.M. Khan, ‘Surface Electrochemistry, A Molecular Level Approach’ (Plenum, New York, 1993), pp. 609–610.Google Scholar
  30. 30.
    I. Villegas and M.J. Weaver, J. Chem. Phys. 101 (1994) 1648.Google Scholar
  31. 31.
    M.A.V. Devanathan and Z. Stachurski, Proc. Roy. Soc. 270 (1962) 90.Google Scholar
  32. 32.
    J. McBreen, J. Electroanal. Chem. 287 (1990) 279.Google Scholar
  33. 33.
    O. Yépez and B.R. Scharifker, manuscript in preparation.Google Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • O. YÉPEZ
    • 1
  • B.R. Scharifker
    • 1
  1. 1.Departamento de QuímicaUniversidad Simón BolívarCaracasVenezuela

Personalised recommendations