Significantly Enhanced Catalytic Performance of Fe2(SO4)3/CeO2 Catalyst for the Selective Catalytic Reduction of NOx by NH3

被引：23
作者：
Zhou, Zizheng [1 ]
Li, Weihua [1 ]
Liu, Zhiming [1 ,2 ,3 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Beijing Ctr Pollut Control & Resource Recovery, Beijing 100029, Peoples R China
[3] Beijing Univ Chem Technol, Beijing Key Lab Energy Environm Catalysis, Beijing 100029, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2021年 / 60卷 / 43期
基金：
中国国家自然科学基金;
关键词：
V2O5/TIO2; CATALYST; SUPERIOR CATALYST; ALKALI RESISTANCE; MN/TIO2; CE/TIO2; OXIDE CATALYSTS; SCR REACTION; CE-TI; FE; MECHANISM;
D O I：
10.1021/acs.iecr.1c02977
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A series of Fe-2(SO4)(3)/CeO2 composite oxide catalysts were fabricated for the selective catalytic reduction of NOx by NH3 (NH3-SCR). Compared with CeO2 and Fe-2(SO4)(3 )catalysts, Fe-2(SO4)(3)/CeO2 exhibited much higher activity and enhanced N-2 selectivity. On the basis of the results of characterization, it can be seen that both the reducibility and the surface acidity of Fe-2(SO4)(3)/CeO2 have been enhanced remarkably, which is ascribed to the synergetic effect among Fe, Ce, and SO42-. In-situ DRIFTS research demonstrated that over Fe-2(SO4)(3)/CeO2, the generation of inactive nitrate was suppressed. Meanwhile, the adsorption and activation of NH3 was remarkably enhanced. Consequently, superior NH3-SCR catalytic performance was achieved over Fe-2(SO4)(3)/CeO2 catalyst.
引用
收藏
页码：15472 / 15478
页数：7
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