Study on preparation and denitrification performance of NH<sub>3</sub>-SCR of bimetallic Cu-Ce/SAPO-34 catalyst

LIU Chong-fei; WANG Xue-tao; XING Li-li; CHENG Xing-xing; ZHANG Xing-yu; DING Kun

doi:10.19906/j.cnki.JFCT.2022034

Volume 50 Issue 10

Oct. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(10): 1316-1323

LIU Chong-fei, WANG Xue-tao, XING Li-li, CHENG Xing-xing, ZHANG Xing-yu, DING Kun. Study on preparation and denitrification performance of NH3-SCR of bimetallic Cu-Ce/SAPO-34 catalyst[J]. Journal of Fuel Chemistry and Technology, 2022, 50(10): 1316-1323. doi: 10.19906/j.cnki.JFCT.2022034

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LIU Chong-fei, WANG Xue-tao, XING Li-li, CHENG Xing-xing, ZHANG Xing-yu, DING Kun. Study on preparation and denitrification performance of NH₃-SCR of bimetallic Cu-Ce/SAPO-34 catalyst[J]. Journal of Fuel Chemistry and Technology, 2022, 50(10): 1316-1323. doi: 10.19906/j.cnki.JFCT.2022034

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Study on preparation and denitrification performance of NH₃-SCR of bimetallic Cu-Ce/SAPO-34 catalyst

doi: 10.19906/j.cnki.JFCT.2022034

1.
Department of Energy and Power Engineering, Henan University of Science and Technology, Luoyang 471003, China
2.
National Engineering Laboratory of Coal-fired Pollutant Emission Reduction, Shandong University, Jinan 2500613, China
3.
School of Energy and Power Engineering, Qilu University of Technology, Jinan 250353, China

Funds: The project was supported by National Natural Science Foundation of China (50806020), Henan Science and Technology Innovation Talent Program (Outstanding Youth) (114100510010) and Science and Technology Project of Science and Technology Department of Henan Province(152102210280).

More Information

Corresponding author: E-mail: wxt7682@163.com．
Received Date: 2022-02-09
Accepted Date: 2022-04-14
Rev Recd Date: 2022-04-14

Available Online: 2022-04-29

Publish Date: 2022-10-31

Abstract

Abstract

A series of Cu-Ce/SAPO-34 bimetallic zeolite catalysts were prepared by impregnation method. The performance of the different quality Cu/Ce ratios zeolite catalysts for selective catalytic reduction of NO was investigated in a catalyst evaluation device. XRD, SEM, NH₃-TPD, XPS, and in-situ DRIFTS were used to characterize and analyze the catalysts. The results show that the modified Cu-Ce/SAPO-34 catalyst has good denitration performance and wide activity temperature window. When the content of Cu and Ce is 4%, the zeolite catalyst has the best denitration efficiency; the denitration efficiency is 80% at 325−500 ℃, and the NO conversion rate is more than 99% at 400−500 ℃. The bimetallic oxide species are highly dispersed on the surface of the catalyst, the crystal structure of SAPO-34 is not affected, and the interaction between the active substance and the support is good. 4Cu-4Ce/SAPO-34 has an appropriate amount of acidic sites, and this mixture has positive effects on the denitrification performance and stability of the catalyst. It follows the E-R mechanism in the NH₃-SCR reaction process.
- denitration,
- SAPO-34,
- NH₃-SCR,
- catalyst,
- active temperature

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References(30)

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