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

Ali, S. and Mohd Zabidi, N. A. and Subbarao, D. (2011) Development of niobium-promoted cobalt catalysts on carbon nanotubes for Fischer-Tropsch synthesis. [Citation Index Journal]

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Abstract

Cobalt-based catalysts were prepared using wet impregnation method on carbon nanotubes (CNTs) support and promoted with niobium. Samples were characterized by nitrogen adsorption, TEM, XRD, TPR, TPO, and TPD. Addition of niobium increased the cobalt dispersion 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 the 0.04%Nb/Co/CNTs catalyst, compared to those observed for other niobium compositions.

Item Type:Citation Index Journal
Impact Factor:1.345
Subjects:Q Science > QD Chemistry
Academic Subject Three:petroleum engineering
Departments / MOR / COE:Mission Oriented Research > Nanotechnology
ID Code:6998
Deposited By: Assoc Prof Dr Noor Asmawati Mohd Zabidi
Deposited On:08 Dec 2011 01:55
Last Modified:20 Mar 2017 01:59

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