Citation: WANG Bao-wei, MENG Da-jun, WANG Wei-han, LI Zhen-hua, MA Xin-bin. Effect of citric acid addition on MoO₃/CeO₂-Al₂O₃ catalyst for sulfur-resistant methanation[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(12): 1479-1484. shu

Effect of citric acid addition on MoO₃/CeO₂-Al₂O₃ catalyst for sulfur-resistant methanation

Key Lab for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Corresponding author: WANG Bao-wei, wangbw@tju.edu.cn MA Xin-bin, xbma@tju.edu.cn.
Received Date: 30 July 2016
Revised Date: 29 September 2016

Fund Project: The project was supported by the National High Technology Research and Development Program of China 863计划，2015AA050504

Figures(4)

Citric acid hold great promise to improve the Mo-based catalyst performance for hydrogenation reaction applications. MoO₃/CeO₂-Al₂O₃ catalysts were prepared by impregnation method with adding citric acid into CeO₂-Al₂O₃ composite supports and tested for sulfur resistant methanation. The syngas methanation activity increased with the increase of citric acid additive amount, and CO conversion could reach up 60% when the molar ratio of citric acid to Ce was 3. The prepared catalysts were characterized by BET, H₂-TPR, XRD and XPS. The increased catalytic performance was mainly attributed to the increased amount of Ce species on the surface of catalysts which could decreased the interaction force between MoO₃ and CeO₂-Al₂O₃ supports. Additionally, the increased specific surface of CeO₂-Al₂O₃ composite support was also in favor of catalytic performance.
- synthetic natural gas,
- methanation,
- CeO₂,
- citric acid
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Effect of citric acid addition on MoO₃/CeO₂-Al₂O₃ catalyst for sulfur-resistant methanation