LAPSE:2023.36130
Published Article
LAPSE:2023.36130
Highly Dispersed and Stable Ni/SiO2 Catalysts Prepared by Urea-Assisted Impregnation Method for Reverse Water−Gas Shift Reaction
Ning Liu, Sha Cui, Zheyu Jin, Zhong Cao, Hui Liu, Shuqing Yang, Xianmin Zheng, Luhui Wang
July 4, 2023
The nickel-based catalyst was more active in the reverse water-gas shift reaction, but it is easy to sinter and deactivate in high temperature reaction (≥600 °C). A urea-assisted impregnation method was utilized to create a Ni/SiO2-N catalyst to increase the catalytic stability of Ni-based catalysts. For at least 20 h, the Ni/SiO2-N catalyst in the reverse water-gas shift process at 700 °C remained stable, and in the high temperature RWGS reaction, the conversion rate of CO2 of the catalyst is close to the equilibrium conversion rate. The catalysts were characterized by BET, XRD, H2-TPR, and TEM, and the results demonstrate that the Ni particles had a small particle size and exhibited strong interaction with the SiO2 support in the Ni/SiO2-N catalyst, which led to the catalyst’s good activity and stability. Urea-assisted impregnation is a facile method to prepare stable Ni/SiO2 catalysts with high Ni dispersion.
Keywords
Ni dispersion, Ni/SiO2 catalyst, reverse water-gas shift reaction, stability, urea
Suggested Citation
Liu N, Cui S, Jin Z, Cao Z, Liu H, Yang S, Zheng X, Wang L. Highly Dispersed and Stable Ni/SiO2 Catalysts Prepared by Urea-Assisted Impregnation Method for Reverse Water−Gas Shift Reaction. (2023). LAPSE:2023.36130
Author Affiliations
Liu N: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
Cui S: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
Jin Z: Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, School of Engineering, Troy, NY 12180, USA
Cao Z: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
Liu H: School of Food and Pharmaceutical, Zhejiang Ocean University, Zhoushan 316022, China
Yang S: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
Zheng X: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
Wang L: Department of Chemical Engineering, School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China; Zhejiang Provincial Key Laboratory of Petrochemical Pollution Control, Zhejiang Ocean University, Zhoushan 31 [ORCID]
Journal Name
Processes
Volume
11
Issue
5
First Page
1353
Year
2023
Publication Date
2023-04-28
ISSN
2227-9717
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PII: pr11051353, Publication Type: Journal Article
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LAPSE:2023.36130
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https://doi.org/10.3390/pr11051353
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