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Title: Zeolite supported iron catalyst for nitric oxide reduction by ammonia in the presence of oxygen
Authors: Salker, A V
Keywords: NOx reduction
iron catalyst
Issue Date: Sep-2004
Publisher: CSIR
IPC CodeC01 B 21/24, BOI J 29/064
Abstract: Iron based H-ZSM-5 catalysts were used to study NO reduction with NH3 in the presence of oxygen with and without humid conditions. The iron based H-ZSM-5 was prepared by wet impregnation method and characterized by X-ray diffraction technique, BET surface area and SEM. TPD experiments showed low and high temperature NH3 desorption peaks. FTIR indicated only ammonia adsorbed species. Fe/ZSM-5 showed better NOx reduction with NH3 than H-ZSM-5 which was a poor catalyst for the NOx reduction. The catalytic activity did not show significant difference in the NOx conversion with and without water, but there was significant difference in NH3 conversion. It may be said that the dispersed Fe species and acid sites were the active centers for the reduction of NO with NH3 in the presence of oxygen.
Page(s): 683-687
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.11(5) [September 2004]

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