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

被引：0
|
作者：
Chen Zhihang [1 ,2 ]
Li Xuehui [2 ]
Cen Chaoping [1 ]
Gao Xiang [2 ]
Wang Lefu [2 ]
机构：
[1] Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China
[2] South China Univ & Technol, Green Chem Prod Technol, Sch Chem & Chem Engn, Guangdong Provincial Key Lab Green, Guangzhou 510640, Guangdong, Peoples R China
来源：
FUNDAMENTAL OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 233-235卷
关键词：
Cr-Mn mixed oxides; CrMn1.5O4; low-temperature; selective catalytic reduction; NOx; NH3; NH3; H-2;
D O I：
10.4028/www.scientific.net/AMR.233-235.1564
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The solid state reaction method, coprecipitation method and citric acid method were employed for the preparation of Cr-Mn mixed-oxide catalysts. Experimental results showed that this catalytic system has good selective catalytic reduction (SCR) properties of NOx by ammonia in the presence of excess oxygen at low temperature (80-220 degrees C). 97.8% conversion of NOx with 100% selectivity of N-2 had been achieved on Cr-MnOx mixed oxide prepared by the citric acid method at 120 degrees C with the space velocity of 30,000 h(-1). X-ray diffraction, BET were adopted for the characterization of the active phase. The characterization results showed that a new crystal phase CrMn1.5O4 generated in mixed oxides which was the active center of the Cr-Mn catalysts.
引用
收藏
页码：1564 / +
页数：2
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