A CeO2-MnOx core-shell catalyst for low-temperature NH3-SCR of NO

被引：80
|
作者：
Li, Shihui [1 ]
Huang, Bichun [1 ,2 ,3 ]
Yu, Chenglong [1 ]
机构：
[1] South China Univ Technol, Sch Environm & Energy, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
[2] South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China
[3] South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Key Lab Pollut Control & Ecosyst Restorat Ind Clu, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2017年 / 98卷
基金：
中国国家自然科学基金;
关键词：
NH3-SCR; CeO2-MnOx; SO2-tolerance; Core-shell structure; SCR; REDUCTION; CEO2; NANOPARTICLES; REMOVAL; TITANIA; OXIDES; OXYGEN;
D O I：
10.1016/j.catcom.2017.04.046
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A CeO2-MnOx catalyst with a core-shell structure was prepared by a chemical deposition method and tested towards the low-temperature selective catalytic reduction of NO by NH3. The catalyst with a molar ratio of CeO2/MnOx = 0.6, exhibited a relatively high conversion values of NO in the 110-220 degrees C range and good resistance to SO2 and H2O at the space velocity of 40,000 h(-1). The excellent catalytic performance could be attributed to the presence of high crystalline alpha-MnO2, as well as high concentrations of Mn4+ and Ce3+. Notably, CeO2-MnOx catalyst showed relatively good resistance to SO2 due to its core-shell structure.
引用
收藏
页码：47 / 51
页数：5
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