γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO2 Methanation - Modern Research in Catalysis

MRC > Vol.6 No.4, October 2017

γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO₂ Methanation ()

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DOI: 10.4236/mrc.2017.64010 1,464 Downloads 3,210 Views Citations

Author(s)

Lu Yao^1,2, Ye Wang³, Maria Elena Galvez^1*, Changwei Hu^2,3, Patrick da Costa¹

Affiliation(s)

¹Sorbonne Universités, UPMC, Univ. Paris 6, Institut Jean Le Rond d’Alembert, Paris, France.
²Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China.
³College of Chemical Engineering, Sichuan University, Chengdu, China.

ABSTRACT

CO₂ methanation with Hydrogen to form CH₄ offers a solution for off-peak renewable energy storage. γ-alumina-supported Mo and Ni-Mo catalysts were used in CO₂ methanation, either in their reduced or in their carburized form. The presence of Ni improved the carburization extent of Mo-species, resulting in increased catalytic activity and selectivity for the catalytic CO₂ methanation reaction. Carburization generally enhances the basicity of the materials and thus CO₂ absorption on their surface. At 300°C, the conversions of CO₂ for the reduced Ni-Mo/Al₂O₃ catalyst and Ni-Mo₂C/Al₂O₃ catalysts were 5.3% and 13.8% respectively with a corresponding selectivity in CH₄ of 10.0% and 98.1%, respectively.

KEYWORDS

CO₂ Methanation, Carbide Catalysts, Nickel, Molybdenum

Share and Cite:

Yao, L. , Wang, Y. , Galvez, M. , Hu, C. and da Costa, P. (2017) γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO₂ Methanation. Modern Research in Catalysis, 6, 135-145. doi: 10.4236/mrc.2017.64010.

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