Original scientific paper
Using Different Preparation Methods to Enhance Fischer-Tropsch Products over Iron-based Catalyst
M. Sarkari
; South Pars Gas Complex Company, Asalooyeh, Iran; bChemical Engineering Department, Brigham Young University, Provo, UT 84602, USA
F. Fazlollahi
; Chemical Engineering Department, Brigham Young University, Provo, UT 84602, USA
H. Atashi
; Department of Chemical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, P.O. Box 98164–161, Zahedan, Iran
A. A. Mirzaei
; Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P.O. Box 98135–674, Zahedan, Iran
W. C. Hecker
; Chemical Engineering Department, Brigham Young University, Provo, UT 84602, USA
Abstract
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 fixedbed
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 time on stream 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.
Keywords
Fischer–Tropsch Synthesis; Fe-Mn/Al2O3 catalyst; co-precipitation; sol-gel; impregnation
Hrčak ID:
108936
URI
Publication date:
30.9.2013.
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