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

LAPSE

Living Archive for Process Systems Engineering

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.

Record ID

LAPSE:2023.36130

Keywords

Ni dispersion, Ni/SiO2 catalyst, reverse water-gas shift reaction, stability, urea

Subject

Reaction Engineering

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