Removal of acetaldehyde vapor with impregnated activated carbons: Effects of steric structure on impregnant and acidity

被引：19

作者：

Hayashi, T

Kumita, M

Otani, Y

机构：

[1] Toyobo Co Ltd, Res Ctr, Otsu, Shiga 5200292, Japan

[2] Kanazawa Univ, Grad Sch Nat Sci & Technol, Dept Chem Engn, Kanazawa, Ishikawa 9201192, Japan

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2005年 / 39卷 / 14期

关键词：

Adsorption; -; Aldehydes; Amines; Catalysts; Chemisorption; Condensation; Impregnation;

D O I：

10.1021/es048514b

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The acetaldehyde adsorption capacities of activated carbons impregnated with various amines were experimentally studied by using fixed beds, It was found that the adsorption capacity of impregnated activated carbons is influenced by the steric structure of impregnants as well as their acidity. For activated carbons impregnated with aromatic amines, ortho and meta substituents on the benzene ring hindered the condensation reaction with acetaldehyde. The activated carbon impregnated with aminobenzenesulfonic acids differed from that impregnated with the other amines in the acetaldehyde adsorption mechanism in that a Doebner-Miller reaction was involved. Also, aminobenzenesulfonic acids were not only the reactant but also the acid catalyst in the removal of acetaldehyde. Since paminobenzenesulfonic acid reacts with acetaldehyde without steric hindrance in the Doebner-Miller reaction, it is the most suitable impregnant for the chemisorption of acetaldehyde.

引用

页码：5436 / 5441

页数：6

共 9 条

[1]

Doebner O., 1883, BER, V16, P2464

[2] Effect of polar groups upon esterification velocities of substituted benzoic acids [J].