Applied Catalysis B: Environmental, Vol.58, No.1-2, 19-23, 2005
Low temperature selective catalytic reduction of NOx by ammonia over H-ZSM-5: an IR study
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. © 2004 Elsevier B.V. All rights reserved.
Keywords:catalytic reduction of NOx;IR study;H-ZSM-5 zeolite;low temperature ammonia SCR;SCR;nitrogen oxides