Study of the Performance of the Cobalt Based Catalyst on Different Supports for Fischer-Tropsch Synthesis

Abstract

With cobalt-based catalyst loaded by Al2O3, TiO2 and ZrO2 as research objectives, in this paper, the performance of these cobalt-based catalysts in Fischer-Tropsch synthesis is discussed. Besides, BET, XRD, FTIR, TPR superficial characteristics and evaluation experiments have been carried out for these catalysts respectively, and the result shows that, the catalyst loaded by ZrO2 has the highest catalytic activity, while the catalyst loaded by Al2O3 has the lowest catalytic activity. The catalyst with higher CO adsorption and dissolving capacity has higher activity; meanwhile, the higher reducibility the catalyst has, the higher the activity of the catalyst will be. In addition, catalyst methane selectivity loaded by Al2O3 is the highest, while catalyst methane selectivity loaded by TiO2 is the lowest, which shows that the large pore structure of catalyst is good for heavy hydrocarbon production, meanwhile, formate species generated on the surface of catalyst implies that the formate species is involved in the generation of methane. Keywords.Carrier; cobalt-based catalyst; Fischer-Tropsch synthesis; performance