CO2 effect on activity and stability of NOx storage reduction catalysts

被引：3
作者：
Basile, F.
Gambatesa, A.
Fornasari, G.
Livi, M.
Vaccari, A.
机构：
[1] Univ Bologna, Dipartimento Chim Ind & Mat, Alma Mater Studiorium, I-40136 Bologna, Italy
[2] INCA, I-30175 Venice, Italy
来源：
TOPICS IN CATALYSIS | 2007年 / 42-43卷 / 1-4期
关键词：
NOx storage/reduction; alkaline earth metal; Pt; CO2; NH3;
D O I：
10.1007/s11244-007-0172-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A catalyst for NOx storage/reduction was prepared to improve the activity of Ba-Pt/gamma-Al2O3 by replacing Ba with a mixture of Ba and Mg. The catalyst was prepared by impregnating Pt and then co-impregnating Ba and Mg (Mg:Ba molar ratio = 1) on commercial gamma-Al2O3. The tests have been carried out in the presence of CO2 at temperatures between 200 and 400 degrees C in order to understand the role of both the feed and various alkaline-earth metals. The storage capacity of the two catalysts was different like the mechanism in the reduction process.
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页码：165 / 169
页数：5
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