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

Authors
PETUNCHI JO HALL WK
Citation
Jo. Petunchi et Wk. Hall, ON THE ROLE OF NITROGEN-DIOXIDE IN THE MECHANISM OF THE SELECTIVE REDUCTION OF NOX OVER CU-ZSM-5 ZEOLITE, Applied catalysis. B, Environmental, 2(2-3), 1993, pp. 120000017-120000026
Citations number
24
Categorie Soggetti
Chemistry Physical","Environmental Sciences
Journal title
Applied catalysis. B, Environmental → ACNP
ISSN journal
09263373
Volume
2
Issue
2-3
Year of publication
1993
Pages
120000017 - 120000026
Database
ISI
SICI code
0926-3373(1993)2:2-3<120000017:OTRONI>2.0.ZU;2-1
Abstract
The selective reduction of nitrogen dioxide over a Cu-ZSM-5 preparatio n has been studied and compared with the same reaction with nitric oxi de. Nitrogen dioxide appears to play a critical role in the overall re action mechanism in both cases. Excess oxygen is required to produce n itrogen dioxide to oxidize the hydrocarbon, to keep the catalyst clean and to prevent excessive reduction of the Cu2+ cations.