The effect of impregnation of activated carbon with SnCl2•2H2O on its porosity, surface composition and CO gas adsorption

被引：21

作者：

Al-Khatib, MF

Iyuke, SE ^{[1
]}

Mohamad, AB

Daud, WRW

Kadhum, AAH

Shariff, AM

Yarmo, MA

机构：

[1] Univ Pertanian Malaysia, Fac Engn, Dept Environm Chem & Engn, Selangor 43400, Darul Ehsan, Malaysia

[2] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Bangi 43600, Darul Ehsan, Malaysia

[3] Univ Teknol Petronas, Dept Chem Engn, Tronoh 31750, Perak, Malaysia

[4] Univ Kebangsaan Malaysia, XPS Lab, Dept Chem, Bangi 43600, Darul Ehsan, Malaysia

来源：

CARBON | 2002年 / 40卷 / 11期

关键词：

activated carbon; impregnation; adsorption; BET surface area; X-ray photoelectron spectroscopy;

D O I：

10.1016/S0008-6223(02)00026-X

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：

Activated carbon was impregnated with different concentrations of SnCl2.2H(2)O. Unimpregnated and impregnated activated carbons were analysed by means of physical adsorption and XPS and were tested for CO gas adsorption in a PSA system. The adsorption isotherms of N-2 at 77 K were measured and showed a Type I isotherm indicating microporous carbon for all the samples. The surface area, pore volume and pore size distribution were reduced with impregnation. XPS analysis showed an increase in the intensity of Sn3d peak with impregnation. The impregnated activated carbon showed a very good adsorption ability of CO gas compared to the unimpregnated sample. The adsorptive species responsible for CO gas adsorption was confirmed to be SnO2 instead of SnO due to the former's comparative thermodynamic stability. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1929 / 1936

页数：8

共 17 条

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