能源化学(英文版)

能源化学(英文) ›› 2013, Vol. 22 ›› Issue (5): 733-739.

• ARTICLES • 上一篇    下一篇

Ni-Co/Mg-Al catalyst derived from hydrotalcite-like compound prepared by plasma for dry reforming of methane

Huali Longa,b, Yan Xub, Xiaoqing Zhangb, Shijing Hub, Shuyong Shangb,c, Yongxiang Yinb, Xiaoyan Daib   

  1. a. School of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, Hubei, China;
    b. School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
    c. School of Chemistry and Chemical Engineering, Yibin University, Yibin 644007, Sichuan, China
  • 收稿日期:2012-11-07 修回日期:2013-01-22 出版日期:2013-09-20 发布日期:2013-09-30
  • 通讯作者: Yongxiang Yin, Shuyong Shang
  • 基金资助:

    This work was supported by the National Natural Science Foundation of China (11075113).

Ni-Co/Mg-Al catalyst derived from hydrotalcite-like compound prepared by plasma for dry reforming of methane

Huali Longa,b, Yan Xub, Xiaoqing Zhangb, Shijing Hub, Shuyong Shangb,c, Yongxiang Yinb, Xiaoyan Daib   

  1. a. School of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, Hubei, China;
    b. School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
    c. School of Chemistry and Chemical Engineering, Yibin University, Yibin 644007, Sichuan, China
  • Received:2012-11-07 Revised:2013-01-22 Online:2013-09-20 Published:2013-09-30
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (11075113).

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摘要： Ni-Co bimetallic catalysts with different Ni/Co content were derived from cold plasma jet decomposition and reduction of hydrotalcite-like compounds containing Ni, Co, Mg and Al, and their catalytic performance was investigated with dry reforming of methane. Experimental results showed that the hydrotalcite-like precursors could be completely decomposed and partly reduced by cold plasma jet, and the Ni-contained catalysts exhibited much higher activity than the catalyst without Ni. Especially, the catalyst with Ni/Co ratio of 8/2 achieved not only the highest conversions of 80.3% and 69.3% for CH4 and CO2, respectively, but also the best stability in 100 h testing. The catalysts were characterized by XRD, XPS, TEM and N2 adsorption techniques, and the results showed that the better performance of the 8Ni2Co bimetallic catalyst was attributed to its higher metal dispersion, smaller metal particle size, as well as the interaction effect between Ni and Co, which were brought by the special catalyst preparation method.

关键词: dry reforming of methane, Ni-Co bimetallic catalyst, cold plasma treatment, hydrotalcite-like compound

Abstract: Ni-Co bimetallic catalysts with different Ni/Co content were derived from cold plasma jet decomposition and reduction of hydrotalcite-like compounds containing Ni, Co, Mg and Al, and their catalytic performance was investigated with dry reforming of methane. Experimental results showed that the hydrotalcite-like precursors could be completely decomposed and partly reduced by cold plasma jet, and the Ni-contained catalysts exhibited much higher activity than the catalyst without Ni. Especially, the catalyst with Ni/Co ratio of 8/2 achieved not only the highest conversions of 80.3% and 69.3% for CH4 and CO2, respectively, but also the best stability in 100 h testing. The catalysts were characterized by XRD, XPS, TEM and N2 adsorption techniques, and the results showed that the better performance of the 8Ni2Co bimetallic catalyst was attributed to its higher metal dispersion, smaller metal particle size, as well as the interaction effect between Ni and Co, which were brought by the special catalyst preparation method.

Key words: dry reforming of methane, Ni-Co bimetallic catalyst, cold plasma treatment, hydrotalcite-like compound