IR, TPR and chemisorption study of alumina-supported cobalt catalysts

被引：22

作者：

Todorova, S

Zhelyazkov, V

Kadinov, G

机构：

[1] Institute of Catalysis, Bulgarian Academy of Sciences

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1996年 / 57卷 / 01期

关键词：

alumina-supported cobalt catalysts; infrared spectroscopy; temperature programmed reduction; CO adsorption;

D O I：

10.1007/BF02076127

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：

Decomposition of cobalt nitrate on alumina in air or hydrogen leads to the formation of different cobalt oxide phases. Chemisorption of Hz and IR spectra of adsorbed CO show that for the catalyst pretreated in H-2 the reduction to metallic cobalt occurs at T>573 K and results in lower metal dispersity. Formation of cobalt particles of different surface structures is proposed depending on the pretreatment mode.

引用

页码：105 / 110

页数：6

共 9 条

[1] ADSORPTION OF CO ON DEFINED CO-SIO2 - INFLUENCE OF THE DEGREE OF REDUCTION AND THE NATURE OF SUPPORT STUDIED BY INFRARED-SPECTROSCOPY [J].