화학공학소재연구정보센터
Journal of Electroanalytical Chemistry, Vol.404, No.1, 153-159, 1996
Electrooxidation of C1 Molecules at Pt-Based Catalysts Highly Dispersed into a Polymer Matrix - Effect of the Method of Preparation
The electro-oxidation of oxygenated molecules containing one carbon atom (methanol, formaldehyde and formic acid) was systematically studied at highly dispersed Pt-based electrodes. The method of preparation appeared to be a key point, particularly for Pt-Sn catalysts. An important decrease of the poisoning phenomena was systematically found, mainly with this latter electrode, but also with Pt-Ru and Pt-Ru-Sn electrodes. In the case of methanol oxidation, ruthenium-modified Pt electrodes are the best electrocatalysts, displaying the weakest poisoning. Conversely, for formic acid and formaldehyde oxidation, Pt-Sn alloys give the most interesting results, better than those obtained with Pt-Ru.