PT-RU ANODES FOR METHANOL ELECTROOXIDATION - A RU-99 MOSSBAUER STUDY

被引：40

作者：

HAMNETT, A ^{[1
]}

KENNEDY, BJ ^{[1
]}

WAGNER, FE ^{[1
]}

机构：

[1] TECH UNIV MUNICH,DEPT PHYS E15,W-8046 GARCHING,GERMANY

来源：

JOURNAL OF CATALYSIS | 1990年 / 124卷 / 01期

关键词：

D O I：

10.1016/0021-9517(90)90101-O

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

99Ru Mössbauer spectra have been obtained for a series of PtRu methanol oxidation anodes. For the most catalytically active sample, XPS and Mössbauer data indicate the presence of Ru(IV) species with a small quadrupole splitting. For highly dispersed samples the Mössbauer data indicate that the Ru is present as a mixture of rutile-phase RuO2 and a second Ru(IV) species. Comparison with electrocatalytic results suggests that the second Ru(IV) species is the active catalytic copromoter. The possible identity of this species is discussed. © 1990.

引用

页码：30 / 40

页数：11

共 34 条

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