Author/Authors :
Mirzaei، Ali Reza نويسنده Department of Technology Management, Allameh Tabataba’ee University Tehran, Iran , , Arsalanfar، Maryam نويسنده Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan 98135-674 , , Ebrahimzadeh، Faza نويسنده Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan 98135-674 , , Atashi، Hossein نويسنده , , Moghaddam، Sayed Hadi Mirhoseini نويسنده Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran ,
Abstract :
The kinetic of Fischer-Tropsch synthesis over a co-precipitated Fe-Ce catalyst was investigated in a fixed bed micro reactor. Experimental
conditions were varied as follow: reaction pressure 1-15 bar, H2/CO feed ratio of 1-3 and space velocity of 3600-5400 h-1 at the temperature range
of 270-310 °C. Four models according to the Langmuir-Hinshelwood-Hougen-Watson (LHHW) type rate equation were derived on the basis of
detailed set of possible reaction mechanisms. The reaction rate of this study is fitted fairly well by one kinetic expression based on LHHW
mechanism. The kinetic parameters were estimated via non-linear regression method and the MARR% values for all proposed models were
obtained. The activation energy was 72 kJ mol-1 for optimum kinetic model. This model had the lower MARR% value than those of the other
proposed models.
