M. karimi - ۱Department of Chemical Engineering, University of Sistan and Baluchestan
H Ateshy - Department of Chemical Engineering, University of Sistan and Baluchestan,
A.A Mirzaei - Department of Chemistry, University of Sistan and Baluchestan
R Akhavan - Department of Chemical Engineering, University of Sistan and Baluchestan

In this research work, our purpose is to prepare and optimize Co/Al2O3 catalyst for production of lower olefins at high selectivities from synthesis gas (CO+H2). To achieve this aim, this catalyst was prepared by co-precipitation procedure at various ageing times and by applying moderate pressures. A fixed-bed steely micro-reactor and a coupled GC-MS apparatus were used to test and analyze the various products resulting from made catalysts, in different temperatures and inlet H2: CO ratios to optimize the reactor conditions of Co/Al2O3 catalyst. We have found that Co/Al2O3 catalysts are of considerable industrial interest owing to their activity for CO hydrogenation. Therefore, we optimized the best operational conditions for producing Co/Al2O3 catalysts so as to convert synthesis gas into lower olefins and to determine other conditions such as ageing time, pH and temperature of deposition as well as Co: Al molar ratio to enhance the olefins selectivity.

Fischer-Tropsch-Synthesis, Synthesis gas, Olefins, Cobalt catalysts