Role of adsorbed species for the anodic methanol oxidation on platinum in acidic electrolytes
- 1 January 1968
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Discussions of the Faraday Society
- Vol. 45, 79-86
- https://doi.org/10.1039/df9684500079
Abstract
The effect of anions on the oxidation of chemisorbed carbonaceous species formed during the anodic oxidation of methanol is attributed to a displacement of the discharge of water molecules to more positive potentials with increasing adsorbability of the anions. The efficiency of CO2 production decreases from about 90% at a methanol bulk concentration of 0·01 M to about 10% at 5 M in 0·5 M H2SO4 at constant potential between 0·5 and 0·7 V. The comparison of the maximum rates of individual reactions with the net rate and the efficiency of CO2 production leads to the conclusion that the CO2 evolution does not occur predominantly by the formation and oxidation of the carbonaceous species.Keywords
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