SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (12): 2953-2959.DOI: 10.1016/j.cjche.2019.04.009

• Catalysis, kinetics and reaction engineering • Previous Articles     Next Articles

Synthesis, characterization and catalytic methanation performance of modified kaolin-supported Ni-based catalysts

Jiao Liu1, Chuanyue Zheng2, Junrong Yue1, Guangwen Xu1,3   

  1. 1 State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2 China University of Mining and Technology, Xuzhou 221116, China;
    3 Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
  • Received:2019-01-15 Revised:2019-03-27 Online:2020-03-17 Published:2019-12-28
  • Contact: Jiao Liu
  • Supported by:
    Supported by the National Natural Science Foundation of China (21161140329) and the National High Technology Research and Development Program of China (2015AA050502).

Synthesis, characterization and catalytic methanation performance of modified kaolin-supported Ni-based catalysts

Jiao Liu1, Chuanyue Zheng2, Junrong Yue1, Guangwen Xu1,3   

  1. 1 State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2 China University of Mining and Technology, Xuzhou 221116, China;
    3 Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
  • 通讯作者: Jiao Liu
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21161140329) and the National High Technology Research and Development Program of China (2015AA050502).

Abstract: Kaolin as a raw material for mesoporous support was firstly modified by calcination, acid treatment, and then was used to prepare nickel catalysts. The amount of alumina which was activated in kaolin during thermal treatment and then leached out in the acid was different. XRD pattern of the kaolin calcined at 600℃ or 900℃ exhibited only the diffraction peaks for amorphous silica and quartz while that calcined at 1100℃ showed obvious peaks for γ-Al2O3. Therefore, the nickel-based catalysts exhibited different physic-chemical properties. Atmospheric syngas methanation over the catalysts clarified an activity order of CA-1100 > CA-900 > CA-1400 > CA-600 > KA ≈ 0 at temperatures of 350-650℃ and a space velocity of 120 L·g-1·h-1. Metallic nickel with small diameter which has medium interaction with the modified kaolin and is well dispersed on the support would have reasonably good activity and carbon-resistance for syngas methanation.

Key words: Methanation, Kaolin, Catalyst, Catalyst support, Leaching

摘要: Kaolin as a raw material for mesoporous support was firstly modified by calcination, acid treatment, and then was used to prepare nickel catalysts. The amount of alumina which was activated in kaolin during thermal treatment and then leached out in the acid was different. XRD pattern of the kaolin calcined at 600℃ or 900℃ exhibited only the diffraction peaks for amorphous silica and quartz while that calcined at 1100℃ showed obvious peaks for γ-Al2O3. Therefore, the nickel-based catalysts exhibited different physic-chemical properties. Atmospheric syngas methanation over the catalysts clarified an activity order of CA-1100 > CA-900 > CA-1400 > CA-600 > KA ≈ 0 at temperatures of 350-650℃ and a space velocity of 120 L·g-1·h-1. Metallic nickel with small diameter which has medium interaction with the modified kaolin and is well dispersed on the support would have reasonably good activity and carbon-resistance for syngas methanation.

关键词: Methanation, Kaolin, Catalyst, Catalyst support, Leaching