Effect of pore structure and surface chemistry of virgin activated carbons on removal of hydrogen sulfide

被引：207

作者：

Bandosz, TJ ^{[1
]}

机构：

[1] CUNY City Coll, Dept Chem, New York, NY 10031 USA

来源：

CARBON | 1999年 / 37卷 / 03期

关键词：

activated carbon; adsorption; surface properties; porosity;

D O I：

10.1016/S0008-6223(98)00217-6

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：

Three activated carbons of various origins were tested as H2S adsorbents, chosen to differ significantly in surface area, pore structure and surface chemistry. The carbons were characterized by sorption of nitrogen and water vapor, potentiometric titration, Boehm titration, and thermal analysis. The results showed that a heterogeneous carbon (having micro- and mesopores) with chemical surface functionality performs better than apparently neutral, predominantly microporous materials with high surface areas. This is thought to be due to the adsorption of water on surface groups which enhances the oxidation of H2S to sulfur or ultimately to sulfuric acid. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：483 / 491

页数：9

共 34 条

[1] The determination of surface changes in active carbons by potentiometric titration and water vapour adsorption [J].