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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(5) [September 2004] >
| Title: | Zeolite supported iron catalyst for nitric oxide reduction by ammonia in the presence of oxygen |
| Authors: | Salker, A V |
| Keywords: | NOx reduction
ammonia
Fe/ZSM-5
H-ZSM-5
Zeolite
iron catalyst |
| Issue Date: | Sep-2004 |
| Publisher: | CSIR |
| IPC Code: | C01 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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