Citation: LIANG Yan-zheng, WANG Xue-tao, ZHANG Qian-wei, LUO Shao-feng, ZHOU Yu-feng. Study on the preparation and catalytic performance of bimetallic Ce-Mn/ZSM-5 catalyst for selective catalytic reduction of nitric oxide by NH₃[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(2): 205-212. shu

Study on the preparation and catalytic performance of bimetallic Ce-Mn/ZSM-5 catalyst for selective catalytic reduction of nitric oxide by NH₃

Department of Energy and Power Engineering, Henan University of Science and Technology, Luoyang 471003, China

Corresponding author: WANG Xue-tao, wxt7682@163.com
Received Date: 16 December 2019
Revised Date: 13 January 2020

Fund Project: Henan Science and Technology Innovation Talent Program (Outstanding Youth) 114100510010Natural Science Foundation of Henan Province 182300410256The project was supported by the National Natural Science Foundation of China (50806020), Henan Science and Technology Innovation Talent Program (Outstanding Youth) (114100510010) and Natural Science Foundation of Henan Province(182300410256)The project was supported by the National Natural Science Foundation of China 50806020

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A series of Ce-Mn/ZSM-5 catalyst with different mass ratios of Ce and Mn was prepared by impregnation method, and the influence of Ce loading on denitrification performance was investigated in a fixed-bed reactor. XRD, TEM, NH₃-TPD, H₂-TPR, in-situ DRIFTS were used to characterize the catalysts. The results show that the bimetallic Ce-Mn/ZSM-5 have a broad active temperature window. Especially, the catalyst with Ce/Mn mass ratio of 0.4 has the best denitrification efficiency, and the denitrification rate can be higher than 80% between 266 and 465℃, and up to 97.28% at 370℃.Manganese and cerium species can be well dispersed on the surface of the support without changing the crystal structure of ZSM-5.0.4Ce-Mn/ZSM-5 catalyst has abundant acidic sites, good redox performance. There are both E-R mechanism and L-H mechanism in NH₃-SCR reaction.
- denitrification,
- Ce-Mn/ZSM-5,
- NH₃-SCR,
- reaction mechanism,
- catalyst
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on the preparation and catalytic performance of bimetallic Ce-Mn/ZSM-5 catalyst for selective catalytic reduction of nitric oxide by NH3

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通讯作者: 陈斌, bchen63@163.com

Study on the preparation and catalytic performance of bimetallic Ce-Mn/ZSM-5 catalyst for selective catalytic reduction of nitric oxide by NH₃