能源化学(英文版)

能源化学(英文) ›› 2011, Vol. 20 ›› Issue (6): 659-663.DOI: 10.1016/S1003-9953(10)60243-5

• Articles • 上一篇    下一篇

Development of niobium-promoted cobalt catalysts on carbon nanotubes for Fischer-Tropsch synthesis

Sardar Ali1, Noor Asmawati Mohd Zabidi2*, Duvvuri Subbarao1   

  1. 1. Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia; 2. Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia
  • 收稿日期:2011-03-03 修回日期:2011-05-25 出版日期:2011-11-20 发布日期:2011-11-18
  • 通讯作者: Noor Asmawati Mohd Zabidi
  • 基金资助:

    Specialized Research Fund for the Doctoral Program of Higher Education of China;Specialized Research Fund for the Doctoral Program of Higher Education of China;Specialized Research Fund for the Doctoral Program of Higher Education of China

Development of niobium-promoted cobalt catalysts on carbon nanotubes for Fischer-Tropsch synthesis

Sardar Ali1, Noor Asmawati Mohd Zabidi2*, Duvvuri Subbarao1   

  1. 1. Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia; 2. Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia
  • Received:2011-03-03 Revised:2011-05-25 Online:2011-11-20 Published:2011-11-18
  • Contact: Noor AsmawatiMohd Zabidi

摘要： Cobalt-based catalysts were prepared by a wet impregnation method on carbon nanotubes (CNTs) support and promoted with niobium. Samples were characterized by nitrogen adsorption, TEM, XRD, TPR, TPO and H2-TPD. Addition of niobium increased the dispersion of cobalt but decreased the catalyst’s reducibility. Fischer-Tropsch synthesis (FTS) was carried out in a fixed-bed microreactor at 543 K, 1 atm and H2/CO = 2 for 5 h. Addition of niobium enhanced the C5+ hydrocarbons selectivity by 39% and reduced methane selectivity by 59%. These effects were more pronounced for 0.04%Nb/Co/CNTs catalyst, compared with those observed for other niobium compositions.

关键词: CNTs, cobalt, niobium, Fischer-Tropsch synthesis

Abstract: Cobalt-based catalysts were prepared by a wet impregnation method on carbon nanotubes (CNTs) support and promoted with niobium. Samples were characterized by nitrogen adsorption, TEM, XRD, TPR, TPO and H2-TPD. Addition of niobium increased the dispersion of cobalt but decreased the catalyst’s reducibility. Fischer-Tropsch synthesis (FTS) was carried out in a fixed-bed microreactor at 543 K, 1 atm and H2/CO = 2 for 5 h. Addition of niobium enhanced the C5+ hydrocarbons selectivity by 39% and reduced methane selectivity by 59%. These effects were more pronounced for 0.04%Nb/Co/CNTs catalyst, compared with those observed for other niobium compositions.

Key words: CNTs, cobalt, niobium, Fischer-Tropsch synthesis