Redispersion of Pd on acidic supports and loss of methane combustion activity during the selective reduction of NO by CH4

被引：29

作者：

Ali, A ^{[1
]}

Chin, YH ^{[1
]}

Resasco, DE ^{[1
]}

机构：

[1] Univ Oklahoma, Sch Chem Engn, Norman, OK 73019 USA

来源：

CATALYSIS LETTERS | 1998年 / 56卷 / 2-3期

关键词：

stabilization; Pd2+ ions; EXAFS; SCR; NOx; acidic supports; H-ZSM-5; H-mordenite; sulfated zirconia;

D O I：

10.1023/A:1019017331001

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：

The CH4 combustion, occurring under selective NO reduction conditions, has been investigated over several Pd catalysts. Ln the presence of NO and support acidity, the combustion activity of Pd is drastically inhibited. Highly dispersed Pd/acidic zeolites compare favorably with other SCR catalysts. At 500 degrees C, a 0.3% Pd/H-ZSM-5 sample exhibited a better performance than a typical Co-ZSM-5 catalyst.

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页码：111 / 117

页数：7

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