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

[1]

ADZIC RR, 1979, ISR J CHEM, V18, P166

[2] ELECTROCATALYTIC OXIDATION OF METHANOL ON PLATINUM-BASED BINARY ELECTRODES [J].

BEDEN, B ;

KADIRGAN, F ;

LAMY, C ;

LEGER, JM .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1981, 127 (1-3) :75-85

[3] PLATINUM CRYSTALLITE SIZE CONSIDERATIONS FOR ELECTROCATALYTIC OXYGEN REDUCTION .1. [J].

BETT, J ;

LUNDQUIST, J .

ELECTROCHIMICA ACTA, 1973, 18 (05) :343-348

[4] ELECTROOXIDATION OF METHANOL AND RELATED COMPOUNDS AT RUTHENIUM DIOXIDE-COATED ELECTRODES [J].

BURKE, LD ;

MURPHY, OJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1979, 101 (03) :351-361

[5] EFFECT OF SUPPORT PRETREATMENTS ON CARBON-SUPPORTED FE PARTICLES [J].

CHEN, AA ;

VANNICE, MA ;

PHILLIPS, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (24) :6257-6269

[6] THE SYNTHESIS OF PLATINUM METAL-ALLOYS BY A PRECIPITATION METHOD [J].

CHOWDHURY, AJS ;

CHEETHAM, AK ;

CAIRNS, JA .

JOURNAL OF CATALYSIS, 1985, 95 (02) :353-360

[7] MOSSBAUER-EFFECT STUDIES OF SUPPORTED RUTHENIUM CATALYSTS [J].

CLAUSEN, CA ;

GOOD, ML .

JOURNAL OF CATALYSIS, 1975, 38 (1-3) :92-100

[8] MOSSBAUER STUDY OF AUTOMOTIVE EMISSION CONTROL CATALYSTS [J].

CLAUSEN, CA ;

GOOD, ML .

JOURNAL OF CATALYSIS, 1977, 46 (01) :58-64

[9]

CLAUSEN CA, 1976, MOSSBAUER EFFECT MET, V10, P93

[10]

DEBATTISTI A, 1985, J ELECTROANAL CHEM, V200, P93

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