Ce-Sn binary oxide catalyst for the selective catalytic reduction of NOx by NH3

被引：105
|
作者：
Liu, Zhiming [1 ,3 ]
Feng, Xu [1 ]
Zhou, Zizheng [1 ]
Feng, Yongjun [1 ]
Li, Junhua [2 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
[3] Beijing Univ Chem Technol, Beijing Key Lab Energy Environm Catalysis, Beijing 100029, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 428卷
基金：
中国国家自然科学基金;
关键词：
Nitrogen oxides; NH3-SCR; Ce-Sn catalyst; LOW-TEMPERATURE SCR; MNOX-CEO2; CATALYST; MIXED OXIDES; MECHANISTIC ASPECTS; ACTIVE-SITES; AMMONIA; SURFACE; PERFORMANCE; FE; CEO2/TIO2;
D O I：
10.1016/j.apsusc.2017.09.175
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：
Ce-Sn binary oxide catalysts prepared by the hydrothermal method have been investigated for the selective catalytic reduction (SCR) of NOx with NH3. Compared with pure CeO2 and SnO2, Ce-Sn binary oxide catalyst showed significantly higher NH3-SCR activity. Moreover, Ce-Sn catalyst showed high resistance against H2O and SO2. The high catalytic performance of Ce-Sn binary oxide is attributed to the synergetic effect between Ce and Sn species, which not only enhances the redox property of the catalyst but also increases the Lewis acidity, thus promoting the adsorption and activation of NH3 species, which contributes to improving the NH3-SCR performance. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：526 / 533
页数：8
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