Electro-oxidation of ethanol and acetaldehyde on platinum single-crystal electrodes.
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.
Lai
Stanley C S
SC
Leiden Institute of Chemistry, Leiden University, PO Box 9502, RA Leiden 2300, The Netherlands.
Koper
Marc T M
MT
D000079:Acetaldehyde / Q000737:chemistry*; D002384:Catalysis; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D004579:Electron Transport; D000431:Ethanol / Q000737:chemistry*; D008956:Models, Chemical; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
D000431:Ethanol; D010984:Platinum; D000079:Acetaldehyde; D010100:Oxygen