Binary electrocatalysts for organic oxidations |
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Authors: | D.F.A. Koch D.A.J. Rand R. Woods |
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Affiliation: | CSIRO Division of Mineral Chemistry, P.O. Box 124, Port Melbourne, Victoria 3207 (Australia) |
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Abstract: | The electro-oxidation of formaldehyde and methanol has been studied on a number of binary platinum electrocatalysts. These comprised mixed electro-deposits of Pt with Sb, As, Bi, Hg, Re, Te or Sn and a range of homogeneous Pt-Rh alloys of different, known, surface composition. These systems were found to exhibit an enhanced activity over that of platinum alone, and this behaviour was correlated with the ease of adsorption of oxygen on the added metal. The activities for organic oxidation were compared with predictions of a model involving reaction between adsorbed oxygen and organic species on the metal surface. The proposed mechanism accounts for the behaviour of both homogeneous and heterogeneous alloy systems. |
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Keywords: | All correspondence concerning this paper to be addressed to The Chief CSIRO Division of Mineral Chemistry at address given. |
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