SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (2): 322-329.DOI: 10.1016/j.cjche.2017.03.028

• Catalysis, kinetics and reaction engineering • 上一篇    下一篇

Ni nanoparticles supported on carbon as efficient catalysts for steam reforming of toluene (model tar)

Chun Shen1, Wuqing Zhou1, Hao Yu1, Le Du2   

  1. 1 Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    2 The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • 收稿日期:2017-02-13 修回日期:2017-03-10 出版日期:2018-02-28 发布日期:2018-03-16
  • 通讯作者: Le Du
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21606008, 21436002), the National Basic Research Foundation of China (2013CB733600), and the Fundamental Research Funds for the Central Universities (ZY1630, JD1617, buctrc201616, and buctrc201617).

Ni nanoparticles supported on carbon as efficient catalysts for steam reforming of toluene (model tar)

Chun Shen1, Wuqing Zhou1, Hao Yu1, Le Du2   

  1. 1 Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    2 The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2017-02-13 Revised:2017-03-10 Online:2018-02-28 Published:2018-03-16
  • Contact: Le Du
  • Supported by:

    Supported by the National Natural Science Foundation of China (21606008, 21436002), the National Basic Research Foundation of China (2013CB733600), and the Fundamental Research Funds for the Central Universities (ZY1630, JD1617, buctrc201616, and buctrc201617).

摘要: This paper investigated the influences of surface properties of carbon support and nickel precursors (nickel nitrate, nickel chloride and nickel acetate) on Ni nanoparticle sizes and catalytic performances for steam reforming of toluene. Treatment with nitric acid helped to increase the amount of functional groups on the surface and hydrophilic nature of carbon support, leading to a homogeneous distribution of Ni nanoparticles. The thermal decomposition products of nickel precursor also played an important role, Ni nanoparticles supported on carbon treated with acid using nickel nitrate as the precursor exhibited the smallest mean diameter of 4.5 nm. With the loading amount increased from 6 wt% to 18 wt%, the mean particle size of Ni nanoparticles varied from 4.5 nm to 9.1 nm. The as-prepared catalyst showed a high catalytic activity and a good stability for toluene steam reforming:98.1% conversion of toluene was obtained with the Ni content of 12 wt% and the S/C ratio of 3, and the conversion only decreased to 92.0% after 700 min. Because of the high activity, good stability, and low cost, the as-prepared catalyst opens up new opportunities for tar removing.

关键词: Ni nanoparticles, Steam reforming, Tar removing, Catalytic performance

Abstract: This paper investigated the influences of surface properties of carbon support and nickel precursors (nickel nitrate, nickel chloride and nickel acetate) on Ni nanoparticle sizes and catalytic performances for steam reforming of toluene. Treatment with nitric acid helped to increase the amount of functional groups on the surface and hydrophilic nature of carbon support, leading to a homogeneous distribution of Ni nanoparticles. The thermal decomposition products of nickel precursor also played an important role, Ni nanoparticles supported on carbon treated with acid using nickel nitrate as the precursor exhibited the smallest mean diameter of 4.5 nm. With the loading amount increased from 6 wt% to 18 wt%, the mean particle size of Ni nanoparticles varied from 4.5 nm to 9.1 nm. The as-prepared catalyst showed a high catalytic activity and a good stability for toluene steam reforming:98.1% conversion of toluene was obtained with the Ni content of 12 wt% and the S/C ratio of 3, and the conversion only decreased to 92.0% after 700 min. Because of the high activity, good stability, and low cost, the as-prepared catalyst opens up new opportunities for tar removing.

Key words: Ni nanoparticles, Steam reforming, Tar removing, Catalytic performance