(583dx) Enhancment of Fischer-Tropsch Products Over Iron-Based Catalyst By Using Different Preparation Method

Fazlollahi, F., Brigham Young University
Baxter, L. L., Brigham Young University
Sarkari, M., Department of Chemical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, P.O. Box 98164-161, Zahedan, Iran

In  the  GTL  process, Fischer–Tropsch  synthesis  (FTS)  plays  an  important  role  for  converting  synthesis gas (mixture of CO and H2) in  the  production  of  ultra-clean  transportation  fuels,  chemicals,  and  other  hydrocarbon  products. The development of an effective catalyst and reactor system is the most competitive issue in FTS. Three Fe-Mn/Al2O3 catalysts were prepared by three different preparation techniques, i.e. co-precipitation; sol-gel and impregnation, and their Fischer–Tropsch Synthesis (FTS) activity and selectivity behavior were investigated and compared using a fixed-bed reactor. It was observed that the impregnated catalyst had the lowest initial activity but was more stable than the other catalysts. The co-precipitated and sol-gel catalysts showed enhanced light olefin production as compared with the impregnated. Methane selectivity decreased with TOS for both the impregnated and co-precipitated catalysts while it increased for the sol-gel. The impregnated catalyst showed the lowest WGS activity, the highest hydrocarbon selectivity and the highest chain growth probability.



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