Fischer-Tropsch synthesis: Water effects on Co supported on narrow and wide-pore silica

被引：52

作者：

Dalai, AK ^{[1
]}

Das, TK ^{[1
]}

Chaudhari, KV ^{[1
]}

Jacobs, G ^{[1
]}

Davis, BH ^{[1
]}

机构：

[1] Univ Kentucky, Ctr Appl Energy Res, Lexington, KY 40511 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2005年 / 289卷 / 02期

关键词：

Fischer-Tropsch synthesis; wide-pore silica; cobalt catalyst; water; effect on FTS; silica; pore size effect;

D O I：

10.1016/j.apcata.2005.04.045

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 effect of water on the performance of narrow and wide-pore silica-supported cobalt catalysts was investigated during Fischer-Tropsch synthesis in a continuously stirred tank reactor (CSTR). In these studies the added water replaced an equivalent amount of inert gas so that all other reaction conditions remained the same before, during and after water addition. A low cobalt loading of 12.4 wt.% on wide-pore silica exhibited a beneficial effect on CO conversion with the addition of water up to 25 vol.% of the total feed. In contrast, the addition of up to 20 vol.% water to a 20 wt. % Co on narrow- or wide-pore silica did not significantly alter the CO conversion. It appears that the CO conversion mainly increases when cobalt clusters are small enough to fit inside the silica pores. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：135 / 142

页数：8

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