Electro-oxidation of C1 molecules at Pt-based catalysts highly dispersed into a polymer matrix: Effect of the method of preparation

被引：128
作者：
Napporn, WT [1 ]
Laborde, H [1 ]
Leger, JM [1 ]
Lamy, C [1 ]
机构：
[1] UNIV POITIERS,URA CNRS 350,LAB CHIM 1,F-86022 POITIERS,FRANCE
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1996年 / 404卷 / 01期
关键词：
electro-oxidation; Pt-based catalysts; polyaniline; C1 organic molecules;
D O I：
10.1016/0022-0728(95)04333-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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.
引用
收藏
页码：153 / 159
页数：7
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