Marked difference in activity of alumina catalysts for selective catalytic reduction of nitrogen monoxide by ethene in excess oxygen

被引:20
|
作者
Okazaki, N [1 ]
Shiina, Y
Itoh, H
Tada, A
Iwamoto, M
机构
[1] Kitami Inst Technol, Dept Appl & Environm Chem, Kitami, Hokkaido 090, Japan
[2] Kitami Inst Technol, Dept Mat Sci, Kitami, Hokkaido 090, Japan
[3] Hokkaido Univ, Ctr Catalysis Res, Sapporo, Hokkaido 060, Japan
关键词
selective catalytic reduction; nitrogen oxide; nitrogen dioxide; hydrocarbons; Al2O3; oxidation of nitrogen oxide to nitrogen dioxide;
D O I
10.1023/A:1019030027115
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
Alumina is well-known as an effective catalyst for the title reaction. The present study revealed that the activity of an alumina catalyst for the reaction largely depended on its type. A critical factor affecting the activity of an alumina was neither the surface area nor pore structure, but the purity; the higher the purity, the higher the activity. Active alumina catalysts showed high activity for both the oxidation of NO to NO2 and the reduction of NO2 by ethene.
引用
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页码:169 / 174
页数:6
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