Novel MnOx-CeO2 nanosphere catalyst for low-temperature NH3-SCR

被引：51
作者：
Li, Lulu [1 ]
Sun, Bowen [1 ]
Sun, Jingfang [1 ,2 ]
Yu, Shuohan [1 ]
Ge, Chengyan [3 ]
Tang, Changjin [1 ]
Dong, Lin [1 ,2 ]
机构：
[1] Nanjing Univ, Key Lab Mesoscop Chem, MOE, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Jiangsu Key Lab Vehicle Emiss Control, Ctr Modern Anal, Nanjing 210093, Jiangsu, Peoples R China
[3] Jiangsu YanCheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2017年 / 100卷
基金：
中国国家自然科学基金;
关键词：
Selective catalytic reduction; Low-temperature SCR activity; SO2 resistance and stability; MnOx-CeO2; nanosphere; NO REDUCTION; MIXED-OXIDE; NH3; PERFORMANCE; CEO2;
D O I：
10.1016/j.catcom.2017.06.019
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 novel MnOx-CeO2 nanosphere catalyst with assembled structure from tiny particles was prepared and tested towards low-temperature NH3-SCR. A superior deNO(x) performance compared to that obtained over the catalyst composed of MnOx supported on CeO2 was obtained. A good resistance to high space velocity and SO2 present in the feed and an excellent stability (no deactivation was observed during 100-h of testing at 150 degrees C) were obtained. The characterization results suggested that the higher specific surface area, better redox behavior and larger concentration of surface active oxygen species were responsible for the above mentioned excellent performance. The results of the present study suggest that control of catalyst morphology can be an effective strategy to upgrade low-temperature NH3-SCR performance.
引用
收藏
页码：98 / 102
页数：5
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