ON THE ROLE OF NITROGEN-DIOXIDE IN THE MECHANISM OF THE SELECTIVE REDUCTION OF NOX OVER CU-ZSM-5 ZEOLITE

被引：158

作者：

PETUNCHI, JO ^{[1
]}

HALL, WK ^{[1
]}

机构：

[1] UNIV PITTSBURGH,DEPT CHEM,PITTSBURGH,PA 15260

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1993年 / 2卷 / 2-3期

关键词：

COPPER; NITROGEN DIOXIDE; NITROGEN OXIDES; ZEOLITES; ZSM-5;

D O I：

10.1016/0926-3373(93)80043-D

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 selective reduction of nitrogen dioxide over a Cu-ZSM-5 preparation has been studied and compared with the same reaction with nitric oxide. Nitrogen dioxide appears to play a critical role in the overall reaction mechanism in both cases. Excess oxygen is required to produce nitrogen dioxide to oxidize the hydrocarbon, to keep the catalyst clean and to prevent excessive reduction of the Cu2+ cations.

引用

页码：L17 / L26

页数：10

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