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Faraday Discuss. 2008;140:399-416; discussion 417-37.

Electro-oxidation of ethanol and acetaldehyde on platinum single-crystal electrodes.

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  • 1Leiden Institute of Chemistry, Leiden University, PO Box 9502, RA Leiden 2300, The Netherlands.


The electrochemical oxidation of ethanol and acetaldehyde in sulfuric acid and perchloric acid were studied at Pt (111), Pt (110), and a number of Pt [n(l11)x(111)] single-crystal electrodes. The oxidation of ethanol shows a marked dependence on the surface structure, roughly increasing as the surface step density increases. The oxidation of acetaldehyde shows a reversed correlation, the activity decreasing with increasing step density. Based on the results obtained here and reported earlier in electrochemical and ultrahigh vacuum literature, a detailed reaction scheme for the ethanol oxidation mechanism is suggested.

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