Influence of Potassium Doping on the Activity and the Sulfur Poisoning Resistance of Soot Oxidation Catalysts

被引：0
|
作者：
Kirill Tikhomirov
Oliver Kröcher
Alexander Wokaun
机构：
[1] Paul Scherrer Institute,
来源：
Catalysis Letters | 2006年 / 109卷
关键词：
soot oxidation catalyst; sulfur poisoning; potassium doping; manganese cerium mixed oxide;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Soot oxidation on potassium nitrate impregnated cerium oxide and manganese cerium mixed oxide was investigated using TG-FTIR. It was found, that potassium nitrate promotes the soot oxidation by enhancing the contact between the soot and the catalyst, as soot ignition temperature corresponds to the melting point of potassium nitrate for both the individual and the mixed oxide. Since potassium nitrate is easier sulfatized than cerium or manganese, the susceptibility of the catalyst to sulfur poisoning is considerably decreased.
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页码：49 / 53
页数：4
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