THE ROLE OF MORPHOLOGY IN THE METHANOL ELECTROOXIDATION REACTION

被引：70

作者：

CHRISTENSEN, PA

HAMNETT, A

TROUGHTON, GL

机构：

[1] Department of Chemistry, The University of Newcastle, Newcastle, NE1 7RU, Bedson Building

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1993年 / 362卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(93)80023-B

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical kinetics for the oxidation of methanol to CO2 in the low overpotential region on platinum have been measured, whilst simultaneously monitoring the coverage of the electrode with adsorbed CO, Attack on adsorbed CO by water appears to be the rate-limiting process for smooth polished platinum, whereas migration of the CO to active sites limits the reaction rate for electrochemically roughened platinum. It is clear that adsorbed CO helps to stabilize the roughened platinum surface, allowing oxidation of methanol to take place at significantly lower overpotentials.

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页码：207 / 218

页数：12

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