Preparation and properties of Ni/KIT-6 catalysts modified with different metals for methanation of CO<sub>2</sub>

FU Chang-liang; WANG Li-ping; WANG Shao-peng; WANG Dong-jiao; ZHAO Ya-wen; MEI Meng-di

Volume 48 Issue 4

Apr. 2020

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Article Navigation > Journal of Fuel Chemistry and Technology > 2020 > 48(4): 476-482

FU Chang-liang, WANG Li-ping, WANG Shao-peng, WANG Dong-jiao, ZHAO Ya-wen, MEI Meng-di. Preparation and properties of Ni/KIT-6 catalysts modified with different metals for methanation of CO2[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 476-482.

Citation:

FU Chang-liang, WANG Li-ping, WANG Shao-peng, WANG Dong-jiao, ZHAO Ya-wen, MEI Meng-di. Preparation and properties of Ni/KIT-6 catalysts modified with different metals for methanation of CO₂[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 476-482.

Citation:

FU Chang-liang, WANG Li-ping, WANG Shao-peng, WANG Dong-jiao, ZHAO Ya-wen, MEI Meng-di. Preparation and properties of Ni/KIT-6 catalysts modified with different metals for methanation of CO₂[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 476-482.

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Preparation and properties of Ni/KIT-6 catalysts modified with different metals for methanation of CO₂

1.
School of Chemical Engineering and Food Science, Zhengzhou Institute of Technology, Zhengzhou 450044, China
2.
Zhengzhou Key Laboratory of Applied Chemical Industry, Zhengzhou 450044, China

Funds:

the Henan Science and Technology Open Cooperation Project 172106000067

the Funding Scheme for Young Key Teachers in Colleges and Universities of Henan Province 2013GGJS-297

More Information

Corresponding author: FU Chang-liang, E-mail: fuchangliang@163.com
Received Date: 2020-01-07
Rev Recd Date: 2020-02-27

Available Online: 2021-01-23

Publish Date: 2020-04-10

Abstract

Abstract

Ni/KIT-6 catalysts modified by Mg, Ce, V and La for CO₂ methanation were prepared by co-impregnation method.The catalysts were characterized by N₂ absorption-desorption, XRD, H₂-TPD and TEM.The effects of different promoters on structure and properties of Ni/KIT-6 catalysts were investigated. The results show that the dispersity of Ni and promoters are very high. The dispersion of Ni particles depends primarily on the confinement effect of the well-ordered mesoporous structure of KIT-6, and is not affected by the addition of metal promoters. The addition of promoters does not affect the surface morphology of Ni/KIT-6 catalyst, but has effects on the difficulty and reduction degree of Ni reduction. Among the metal promoters studied, V addition makes the reduction of NiO in the catalyst easily and results in a high reduction degree. The oxide of V can change the reaction mechanism of CO₂ methanation, resulting in the best methanation performance. Compared with the unmodified catalyst, the catalyst modified by V makes the conversion of CO₂ and the selectivity of CH₄ increase by 3.7% and 11.6% respectively. The selectivity of CH₄ is 100%.
- Ni catalyst,
- KIT-6 carrier,
- carbon dioxide,
- methanation

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References(20)

References

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