SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (11): 2361-2367.DOI: 10.1016/j.cjche.2018.03.029

• Special issue of Carbon Capture, Utilisation and Storage • 上一篇    下一篇

Ni/bentonite catalysts prepared by solution combustion method for CO2 methanation

Yuexiu Jiang1, Tongxia Huang1, Lihui Dong1, Zuzeng Qin1, Hongbing Ji1,2   

  1. 1 School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, China;
    2 School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
  • 收稿日期:2017-12-24 修回日期:2018-03-20 出版日期:2018-11-28 发布日期:2018-12-10
  • 通讯作者: Zuzeng Qin, Hongbing Ji
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21566005), the Natural Science Foundation of Guangxi Province (2016GXNSFFA380015).

Ni/bentonite catalysts prepared by solution combustion method for CO2 methanation

Yuexiu Jiang1, Tongxia Huang1, Lihui Dong1, Zuzeng Qin1, Hongbing Ji1,2   

  1. 1 School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, China;
    2 School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2017-12-24 Revised:2018-03-20 Online:2018-11-28 Published:2018-12-10
  • Contact: Zuzeng Qin, Hongbing Ji
  • Supported by:

    Supported by the National Natural Science Foundation of China (21566005), the Natural Science Foundation of Guangxi Province (2016GXNSFFA380015).

摘要: A 20 wt% Ni/bentonite catalyst was prepared by a solution combustion synthesis (SCS), which exhibited higher activity for the CO2 methanation than that of an impregnation method (IPM), and the catalyst prepared by SCS showed a CO2 conversion of 85% and a CH4 selectivity of 100% at 300℃, atmospheric pressure, and 3600 ml·(g cat)-1·h-1, and the catalyst exhibited stable within a 110-h reaction. The results showed higher metallic Ni dispersion, smaller Ni particle size, larger specific surface area and lower reduction temperature in the Ni/bentonite prepared by SCS than that of IPM. And the Ni/bentonite prepared by the SCS moderated the interaction between NiO and bentonite.

关键词: CO2 methanation, Ni/bentonite catalyst, Solution combustion synthesis, Impregnation method

Abstract: A 20 wt% Ni/bentonite catalyst was prepared by a solution combustion synthesis (SCS), which exhibited higher activity for the CO2 methanation than that of an impregnation method (IPM), and the catalyst prepared by SCS showed a CO2 conversion of 85% and a CH4 selectivity of 100% at 300℃, atmospheric pressure, and 3600 ml·(g cat)-1·h-1, and the catalyst exhibited stable within a 110-h reaction. The results showed higher metallic Ni dispersion, smaller Ni particle size, larger specific surface area and lower reduction temperature in the Ni/bentonite prepared by SCS than that of IPM. And the Ni/bentonite prepared by the SCS moderated the interaction between NiO and bentonite.

Key words: CO2 methanation, Ni/bentonite catalyst, Solution combustion synthesis, Impregnation method