THE ROLE OF MICROPOROUS SURFACE-AREA IN THE GASIFICATION OF CHARS FROM A SUB-BITUMINOUS COAL

被引：107

作者：

HURT, RH ^{[1
]}

SAROFIM, AF ^{[1
]}

LONGWELL, JP ^{[1
]}

机构：

[1] MIT,DEPT CHEM ENGN,CAMBRIDGE,MA 02139

来源：

FUEL | 1991年 / 70卷 / 09期

基金：

美国国家科学基金会;

关键词：

SURFACE AREA; GASIFICATION; SUB-BITUMINOUS COAL;

D O I：

10.1016/0016-2361(91)90263-A

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The role of microporous surface area in the CO2 gasification of chars from a sub-bituminous coal was investigated. There is evidence that the reaction primarily takes place outside the microporous network on the surfaces of larger pores. The rate of gasification is insensitive to large changes in total surface area occurring during heat treatment or reaction. This behaviour is consistent with the occurrence of reaction on active sites lying preferentially outside the micropores. Mechanisms which can lead to an enhancement of the active site concentration on large pore surfaces are discussed.

引用

页码：1079 / 1082

页数：4