Improvement of Sb-Modified Mn-Ce/TiO2 Catalyst for SO2 and H2O Resistance at Low-Temperature SCR

被引：7

作者：

Yan, Dongjie ^{[1
]}

Zhao, Jiaxuan ^{[1
]}

Li, Juan ^{[1
]}

Abbas, Ghulam ^{[2
]}

Chen, Zhaohui ^{[1
]}

Guo, Tong ^{[1
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Peoples R China

[2] Univ Gujrat, Dept Chem Engn & Technol, Gujrat 50700, Pakistan

来源：

CATALYSIS LETTERS | 2023年 / 153卷 / 09期

关键词：

NH3-SCR; SO2; resistance; Antimony; Mn-Ce/TiO2; catalyst; MANGANESE OXIDES; NO REDUCTION; NITRIC-OXIDE; NH3; TOLERANCE; NH3-SCR; PROMOTION; DEACTIVATION; PERFORMANCE; AMMONIA;

D O I：

10.1007/s10562-022-04212-y

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：

Mn/TiO2, Mn-Ce/TiO2, and Sb-modified Mn-Ce-Sb-x/TiO2 catalysts were prepared by the impregnation method. The catalysts were characterized by BET, XRD, XPS, SEM, NH3-TPD, FTIR, TG-DSC, H-2-TPR, and the SCR (Selective Catalytic Reduction) activity, and investigated by SO2, and H2O resistance between 90 degrees C and 220 degrees C. Results showed that the molar ratio of Sb/Mn is 0.2, the catalytic activity of Mn-Ce-Sb-0.2/TiO2 can reach 94% of NO conversion rate at 120 degrees C. Meanwhile, Mn-Ce-Sb-0.2/TiO2 has the best SO2 and H2O resistance. Characterization results demonstrated that the modification of Sb can decrease the crystallinity of the Mn element, while Sb can inhibit the formation of sulfate and reduce the poisonous effect of SO2 on the catalyst. [GRAPHICS] .

引用

页码：2838 / 2852

页数：15

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