Influence of calcination conditions on the performance of Ni-Al<sub>2</sub>O<sub>3</sub> catalyst for CO methanation in slurry-bed reactor

MO Wen-long; XIAO Yan; MA Feng-yun; ZHONG Mei; LIU Jing-mei; Aisha·nulahong

Volume 46 Issue 1

Jan. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(1): 84-91

MO Wen-long, XIAO Yan, MA Feng-yun, ZHONG Mei, LIU Jing-mei, Aisha·nulahong. Influence of calcination conditions on the performance of Ni-Al2O3 catalyst for CO methanation in slurry-bed reactor[J]. Journal of Fuel Chemistry and Technology, 2018, 46(1): 84-91.

Citation:

MO Wen-long, XIAO Yan, MA Feng-yun, ZHONG Mei, LIU Jing-mei, Aisha·nulahong. Influence of calcination conditions on the performance of Ni-Al₂O₃ catalyst for CO methanation in slurry-bed reactor[J]. Journal of Fuel Chemistry and Technology, 2018, 46(1): 84-91.

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Influence of calcination conditions on the performance of Ni-Al₂O₃ catalyst for CO methanation in slurry-bed reactor

Key Laboratory of Coal Clean Conversion & Chemical Engineering Process(Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China

Funds:

the National High Technology Research and Development Program of China 863 Program

the National High Technology Research and Development Program of China 2015AA050502

Natural Science Foundation of Xinjiang University BS160221

More Information

Corresponding author: MA Feng-yun, E-mail: ma_fy@126.com
Received Date: 2017-08-25
Rev Recd Date: 2017-11-24

Available Online: 2021-01-23

Publish Date: 2018-01-10

Abstract

Abstract

Effects of calcination temperature and calcination time on the crystal structure, reduction characteristics, pore structure and CO methanation performance of Ni-Al₂O₃ catalyst were investigated by using a mechanical-chemical method to prepare Ni-Al₂O₃ catalyst. The catalysts were characterized by XRD, H₂-TPR, BET, XPS and TPH. The results showed that the calcination temperature increased from 350℃ to 700℃, NiO was still well dispersed on the surface of the carrier, and the reduction peak temperature decreased to high temperature. The specific surface area of the cat-450 sample obtained by calcination at 450℃ was 350 m²/g. The results showed that with the calcination temperature increased from 350℃ to 700℃, CO conversion, CH₄ selectivity and yield were increased first and then decreased, reaching the maximum at 450℃, with 97.8%, 88.2% and 86.2%, respectively. In addition, the calcination time has little effect on the reduction performance of the catalyst, and has small influence on the crystal structure of the carrier Al₂O₃. With the increase of calcination time, CO conversion decreased slightly and then increased with the better calcination time of 4 h.
- methanation,
- Ni-Al₂O₃,
- mechanical-chemical method,
- slurry-bed reactor,
- calcination conditions

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References(17)

References

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