Selective Catalytic Reduction of NOx with NH3 on a Cr-Mn Mixed Oxide at Low Temperature

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (1): 4-6.

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Selective Catalytic Reduction of NOx with NH3 on a Cr-Mn Mixed Oxide at Low Temperature

CHEN Zhihang, LI Xuehui*, GAO Xiang, JIANG Yanbin, L Yangxiao, WANG Furong, WANG Lefu

School of Chemistry and Chemical Engineering, Guangdong Province Laboratory of Green Chemical Technology, South China University of Technology, Guangzhou 510640, Guangdong, China

Received:2009-01-25 Online:2009-01-25 Published:2012-10-17

Abstract

Abstract: A series of Cr-Mn mixed oxide catalysts were prepared by the citric acid met hod. This catalytic system has excellent activity with 98.5% NOx conversi o n and 100% selectivity for N2 on Cr(0.4)-MnOx at 120 ℃ and space velo city of 30000 h-1. The addition of chromium to MnOx can gene rate a CrMn1.5O4 crystal phase, which is the main active center.

Key words: chromium-manganese mixed oxide, low temperature, selective catalytic reduction, nitrogen oxide, ammonia

CHEN Zhihang;LI Xuehui*;GAO Xiang;JIANG Yanbin;L Yangxiao;WANG Furong;WANG Lefu. Selective Catalytic Reduction of NOx with NH3 on a Cr-Mn Mixed Oxide at Low Temperature[J]. Chinese Journal of Catalysis, 2009, 30(1): 4-6.

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Selective Catalytic Reduction of NOx with NH3 on a Cr-Mn Mixed Oxide at Low Temperature

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