THE FORMATION OF COBALT SILICATES ON CO/SIO2 UNDER HYDROTHERMAL CONDITIONS

被引：101

作者：

KOGELBAUER, A ^{[1
]}

WEBER, JC ^{[1
]}

GOODWIN, JG ^{[1
]}

机构：

[1] UNIV PITTSBURGH,DEPT CHEM & PETR ENGN,PITTSBURGH,PA 15261

来源：

CATALYSIS LETTERS | 1995年 / 34卷 / 3-4期

关键词：

COBALT; SILICA; SILICATE; FISCHER-TROPSCH; HYDROTHERMAL;

D O I：

10.1007/BF00806875

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：

A Co/SiO2 catalyst recovered after both gas and liquid phase Fischer-Tropsch synthesis exhibited significant decreases in the amount of reducible metal. Hydrothermal conditions similar to those occurring during Fischer-Tropsch synthesis were simulated in order to study compound formation in this Co/SiO2 catalyst. Hydrothermal treatment at 220 degrees C led to a catalyst with lower reducibility, attributable to the formation of both reducible and nonreducible (<900 degrees C) Co silicates. The formation of these compounds occurred only when metallic Co was present, was more pronounced in the presence of hydrogen, and was inhibited by air.

引用

页码：259 / 267

页数：9

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