%X 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 H 2-TPD. Addition of niobium increased the dispersion of cobalt but decreased the catalysts reducibility. Fischer-Tropsch synthesis (FTS) was carried out in a fixed-bed microreactor at 543 K, 1 atm and H 2/CO = 2 for 5 h. Addition of niobium enhanced the C 5+ hydrocarbons selectivity by 39 and reduced methane selectivity by 59. These effects were more pronounced for 0.04Nb/Co/CNTs catalyst, compared with those observed for other niobium compositions. © 2011 CAS/DICP. All rights reserved.
%K CNTs; Cobalt Catalyst; Cobalt-based catalysts; Fischer Tropsch; Fixed-bed; Micro-reactor; Nitrogen adsorption; Wet impregnation method; XRD, Carbon nanotubes; Catalysts; Cobalt; Gas adsorption; Methane; Niobium, Fischer-Tropsch synthesis
%L scholars1850
%J Journal of Natural Gas Chemistry
%O cited By 5
%N 6
%R 10.1016/S1003-9953(10)60243-5
%D 2011
%V 20
%A S. Ali
%A N.A.M. Zabidi
%A D. Subbarao
%T Development of niobium-promoted cobalt catalysts on carbon nanotubes for Fischer-Tropsch synthesis
%P 659-663