Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 58, Issue 1-2, Pages 19-23Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2004.11.015
Keywords
catalytic reduction of NOx; IR study; H-ZSM-5 zeolite; low temperature ammonia SCR; SCR; nitrogen oxides
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The IR study of the interaction of NO2 with ammonia-covered H-ZSM-5 zeolite shows a very fast reaction at room temperature between NO2 and adsorbed ammonium ions. An adsorbed NO2 species is also formed. In the presence of NO + NO2 mixture ammonium ions are completely rapidly decomposed at 300-373 K. These data suggest some speculations on the mechanism of the reduction of NOx by ammonia on H-ZSM-5 catalysts. (c) 2004 Elsevier B.V. All rights reserved.
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