Citation: JING Jie-ying, WANG Shi-dong, ZHANG Xue-wei, LI Qing, LI Wen-ying. Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al₂O₃ catalyst[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(8): 956-962. shu

Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al₂O₃ catalyst

Training Base of State Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: JING Jie-ying, jingjieying@tyut.edu.cn LI Wen-ying, ying@tyut.edu.cn
Received Date: 9 May 2017
Revised Date: 8 June 2017

Fund Project: The project was supported by National Natural Science Foundation of China 21406155Shanxi Scholarship Council of China 2016-028The project was supported by National Natural Science Foundation of China U1361202Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi 164010121-SThe project was supported by National Natural Science Foundation of China (21406155, U1361202), Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi (164010121-S) and Shanxi Scholarship Council of China (2016-028)

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CO₂ enhanced sorption methane steam reforming for hydrogen production is a potential approach to economically provide hydrogen and to reduce CO₂ emission. The key point for this process is to develop a composite catalyst with high catalytic and adsorptive capacity. Considering the tunable structure of hydrotalcite-like compounds, co-precipitation method was employed to synthesize Ni/CaO-Al₂O₃ composite catalysts by varying the molar ratio of Ca to Al. The results show that the specific surface area and Ni dispersion of the as-synthesized composite catalysts are greatly influenced by molar ratio of Ca to Al, which derives from the variable interaction between Ni and the support. When the molar ratio of Ca to Al is 3, the composite catalyst obtains a specific surface area of 12.9 m²/g and Ni dispersion of 1.07%. Catalytic evaluation shows that the composite catalyst possesses a H₂ concentration of 95% and a CH₄ conversion of 88%, and H₂ concentration exceeds 93% even after 10 cyclic runs.
- hydrogen production,
- composite catalyst,
- hydrotalcite-like compounds,
- enhanced CO₂ sorption
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沈阳化工大学材料科学与工程学院沈阳 110142

Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al2O3 catalyst

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通讯作者: 陈斌, bchen63@163.com

Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al₂O₃ catalyst