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.
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References
R. Parsons and T. Vandernoot, J. Electroanal. Chem. 257 (1988) 9.
K. Machida and M. Enyo, J. Electrochem. Soc. 134 (1987) 1472.
J.O'M. Bockris and S.U.M. Khan, ‘Surface Electrochemistry, a Molecular Level Approach’ (Plenum, New York, 1993), p. 268.
F.A. Lewis, ‘The Palladium Hydrogen System’ (Academic Press, London, 1967).
M.W. Breiter, J. Electroanal. Chem. 109 (1980) 243, 253.
M.W. Breiter, J. Electroanal. Chem. 180 (1984) 25.
A. Czerwinski, S. Zamponi and R. Marassi, J. Electroanal. Chem. 304 (1991) 233.
A. Czerwinski, J. Electroanal. Chem. 379 (1994) 487.
A. Bewick, J. Electroanal. Chem. 150 (1983) 481.
K. Kunimatsu, J. Phys. Chem. 88 (1984) 2195.
Y. Ikezawa, H. Saito, M. Yamazaki and G. Toda, J. Electroanal. Chem. 245 (1988) 245.
K. Yoshioka, F. Kitamura, M. Takeda, M. Takahashi and M. Ito, Surf. Sci. 227 (1990) 90.
L.-W.H. Leung and M.J. Weaver, J. Am. Chem. Soc. 109 (1987) 5113.
L.-W.H. Leung and M.J. Weaver, Langmuir 6 (1990) 323.
J.A. Caram and C. Gutirrez, J. Electroanal. Chem. 344 (1993) 313.
W. Ayers, US Patent 4 547 273 (1985).
W.M. Ayers and M. Farley, ACS Symp. Ser. 363 (1988) 147.
H. Yoshitake, K. Takahashi and K. Ota, J. Chem. Soc., Faraday Trans. 90 (1994) 155.
K. Ohkawa, K. Hashimoto, A. Fujishima, Y. Noguchi y S. Nakayama, J. Electroanal. Chem. 345 (1993) 445.
S.C. Chang and M.J. Weaver, J. Chem. Phys. 92 (1990) 4582.
D.S. Corrigan and M.J. Weaver, J. Electroanal. Chem. 241 (1988) 143.
D.S. Corrigan and M.J. Weaver, J. Phys. Chem. 90 (1986) 5300.
L-W.H. Leung, A. Wieckowski, M.J. Weaver, J. Phys. Chem. 92 (1988) 6985.
R.R. Adzic, M.D. Spasojevic and A.R. Despic, J. Electroanal. Chem. 92 (1978) 31.
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.
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.
B. Scharifker, O. Yepez, J.C. De Jesus and M.M. Ramirez de Agudelo, US Patent 5 051 156 (1991).
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.
J.O'M. Bockris and S.U.M. Khan, ‘Surface Electrochemistry, A Molecular Level Approach’ (Plenum, New York, 1993), pp. 609–610.
I. Villegas and M.J. Weaver, J. Chem. Phys. 101 (1994) 1648.
M.A.V. Devanathan and Z. Stachurski, Proc. Roy. Soc. 270 (1962) 90.
J. McBreen, J. Electroanal. Chem. 287 (1990) 279.
O. Yépez and B.R. Scharifker, manuscript in preparation.
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YÉPEZ, O., Scharifker, B. Oxidation of CO on hydrogen-loaded palladium. Journal of Applied Electrochemistry 29, 1185–1190 (1999). https://doi.org/10.1023/A:1003699223762
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DOI: https://doi.org/10.1023/A:1003699223762