STUDY OF THE CO-CEO2 INTERACTION IN PRESENCE OF HIGHLY DISPERSED RHODIUM

被引：15

作者：

LAACHIR, A

PERRICHON, V

BERNAL, S

CALVINO, JJ

CIFREDO, GA

机构：

[1] INST RECH CATALYSE,F-69626 VILLEURBANNE,FRANCE

[2] UNIV CADIZ,FAC CIENCIAS,DEPT QUIM INORGAN,E-11510 CADIZ,SPAIN

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1994年 / 89卷 / 03期

关键词：

CERIA; CO ADSORPTION; MAGNETIC SUSCEPTIBILITY; RHODIUM;

D O I：

10.1016/0304-5102(93)E0330-J

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：

The interaction of CO at room temperature with a ceria supported rhodium catalyst was investigated using TPD-MS and a magnetic balance. The results have shown important differences in comparison with the H-2-Rh/CeO2 system. In the presence of rhodium, the treatment with CO resulted in a much smaller degree of reduction of CeO2 than with hydrogen. When, after CO adsorption at 294 K, the catalyst was heated at 773 K under vacuum, the reduction extent increased. In the case of hydrogen, the thermodesorption at 773 K almost completely reoxidized the ceria surface.

引用

收藏

页码：391 / 396

页数：6

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