Influence of surface properties and iron addition on the SO2 adsorption capacity of activated carbons

被引：33

作者：

Davini, P ^{[1
]}

机构：

[1] Univ Pisa, Dept Chem Engn, I-56126 Pisa, Italy

来源：

CARBON | 2002年 / 40卷 / 05期

关键词：

activated carbons; adsorption; catalytic properties;

D O I：

10.1016/S0008-6223(01)00161-0

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：

When iron derivatives are added to low ash activated carbons having basic surface characteristics (obtained by suitable oxidation at 800degreesC with 2% of O-2 in N-2), certain materials are obtained showing high SO2 sorbent properties from gaseous mixtures having a composition close to that of the flue gases. This behaviour seems to be related to the simultaneous presence of both basic surface sites promoting the initial adsorption of SO2 and iron promoting the transformation of the adsorbed SO2 into other, more stable forms. The sorbent properties of these activated carbons are more stable, following consecutive cycles, in the processes of adsorption and desorption of SO2, than those shown by similar carbons with different surface characteristics. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：729 / 734

页数：6

共 21 条

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