Journal
CHINESE JOURNAL OF CATALYSIS
Volume 33, Issue 9, Pages 1448-1454Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(11)60439-7
Keywords
perovskite; bismuth manganite; acidity; selective catalytic reduction; low temperature
Funding
- National Natural Science Foundation of China [21177120]
- National High Technology Research and Development Program of China (863 Program) [2011AA03A406]
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A perovskite was used for selective catalytic reduction of NO with NH3 (NH3-SCR) at low temperature in the presence of excess oxygen. The BiMnO3 perovskite catalyst showed high activity in NH3-SCR at 100-240 degrees C. Experiment and DFT calculation showed that more Lewis acid sites and a high concentration of surface oxygen on BiMnO3 as compared with LaMnO3 were responsible for its better performance. In addition, BiMnO3 was also resistant to water vapor and a mixture of H2O and SO2.
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