Structural investigation of the promotional effect of hydrogen during the selective catalytic reduction of NOx with hydrocarbons over Ag/Al2O3 catalysts

被引：110

作者：

Breen, JP ^{[1
]}

Burch, R ^{[1
]}

Hardacre, C ^{[1
]}

Hill, CJ ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Chem, CenTACat, Belfast BT9 5AG, Antrim, North Ireland

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 11期

关键词：

D O I：

10.1021/jp050253k

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：

In situ EXAFS has been used to examine the hydrogen effect on the selective catalytic reduction of NOx over silver/alumina catalysts. For all SCR conditions used, with or without co-reductant (H-2 or CO), the catalyst structure remained the same. Significant changes in the catalyst were only found under reducing conditions. The enhanced activity found in the presence of hydrogen is thought to be due to a chemical effect and not the result of a change in the structure of the active site.

引用

页码：4805 / 4807

页数：3

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