Citation: LI Zhen-hua, LIU Chen, XIE Chun-fang, WANG Wei-han, WANG Bao-wei, MA Xin-bin. Influence of water on the methanation performance of Mo-based catalyst[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(6): 689-696. shu

Influence of water on the methanation performance of Mo-based catalyst

Key Lab for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Corresponding author: WANG Wei-han, wangwh@tju.edu.cn
Received Date: 3 March 2017
Revised Date: 21 April 2017

Fund Project: the National High-Technology Research and Development Program of China 863 programthe National High-Technology Research and Development Program of China 2015AA050504the National Natural Science Foundation of China 21576203

Figures(8)

The effects of H₂O on the performance of the sulfur-resistant Mo-based methanation catalysts were investigated by adding vapor into the reactant gas at the reaction conditions of 550℃, 5 500 h^-1, 1.2% of H₂S concentration. The results indicate that water caused irreversible deactivation of Mo-based catalyst supported on Al₂O₃, while additive Co and cerium-aluminum composite carrier can enhance the activity and improve the stability of the Mo-based catalyst for methanation of syngas. The promoter Co protects the active phase MoS₂ of Mo-based catalyst, inhibits the irreversible deactivation caused by the addition of water. When the water content in reactant gas is increased, the water gas shift reaction increases and becomes the main reaction on catalysts, and the increase of water leads to further decrease of the catalyst activity and stability.
- sulfur-resistant methanation,
- Mo-based catalyst,
- water,
- water-gas shift,
- deactivation
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