CO-INDUCED CHANGES IN STRUCTURE OF SUPPORTED RHENIUM

被引：36

作者：

SOLYMOSI, F ^{[1
]}

BANSAGI, T ^{[1
]}

机构：

[1] ATTILA JOZSEF UNIV,CTR CATALYSIS SURFACE & MAT SCI,INST SOLID STATE & RADIOCHEM,H-6701 SZEGED,HUNGARY

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 03期

关键词：

D O I：

10.1021/j100182a061

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 with highly reduced Re/Al2O3 was investigated at 100-673 K by means of infrared spectroscopy. The adsorption of CO at 100 K produced absorption bands characteristic of linearly and bridge bonded CO. At 200-300 K well-observable spectral changes were experienced, their extent depending on the temperature and adsorption time. The absorption bands formed suggest the occurrence of CO-induced structural changes in the Re crystallites and the formation of Re carbonyls with higher CO/Re ratio, most probably Re2(CO)10. Further spectral changes occurred at 373-473 K, indicating the transformation of the more complex Re carbonyl into Re tricarbonyl. This transformation was promoted by H2O. The formation of Re tricarbonyl from Re(x)-CO species was found to be very limited.

引用

页码：1349 / 1355

页数：7

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