Ce1-xMnxVO4 with Improved Activity for Low-Temperature Catalytic Reduction of NO with NH3

被引：0
作者：
Wang, Li [1 ]
Wang, Jun-bo [2 ]
Cheng, He-ping [3 ]
Xu, Hui [2 ]
Wu, Shi-ni [2 ]
Huang, Fei [2 ]
Chen, Long [2 ]
Ma, Zhen [4 ,5 ]
机构：
[1] Zhejiang Shuren Univ, Coll Biol & Environm Engn, Hangzhou 310015, Peoples R China
[2] Huangshan Univ, Sch Chem & Chem Engn, Key Lab Inorgan Funct Mat, Huangshan 245041, Peoples R China
[3] Huangshan Univ, Sch Informat Engn, Huangshan 245041, Peoples R China
[4] Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China
[5] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
来源：
CHEMISTRY-AN ASIAN JOURNAL | 2025年 / 20卷 / 06期
关键词：
SCR; Nitrogen oxides; CeVO4; Mn doping; DEACTIVATION MECHANISM; NH3-SCR; SO2; PROMOTION; SCR; PERFORMANCE; MORPHOLOGY; FE;
D O I：
10.1002/asia.202401341
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Novel Ce1-xMnxVO4 catalysts prepared via modified hydrothermal synthesis were used in selective catalytic reduction of NO using NH3 (NH3-SCR). The Ce1-xMnxVO4 catalysts displayed optimum NO removal efficiency at 250 degrees C. Physicochemical properties including crystal type, morphology, particle size, elemental composition, BET surface area, chemical bond, and valence state were studied by XRD, TEM, EDS, N-2 adsorption-desorption, Raman spectroscopy, and XPS. Specific properties such as reduction property and acid sites were studied by H-2-TPR and NH3-TPD. The in-situ DRIFTS results revealed that NH3-SCR over Ce0.5Mn0.5VO4 follows the Eley-Rideal mechanism. The experimental results showed that doped manganese replaces the Ce position in CeVO4. The Mn-O-Ce interaction may increase the contents of oxygen defects and Br & oslash;nsted acid sites, thus leading to enhanced activity.
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页数：8
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