The Open Catalysis Journal

2010, 3 : 62-69
Published online 2010 September 16. DOI: 10.2174/1876214X01003010062
Publisher ID: TOCATJ-3-62

Selective Formation of Light Olefins from CO+H2 Over Silica Supported Co/CeO2 Prepared by Fusion Method: Preparation, Characterization and Operational Conditions Effects

A. Beigbabaei , A.A. Mirzaei , M. Galavy and A. Youssefi
Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan 98135-674, Iran.

ABSTRACT

The catalyst containing 80%Co/20%Ce/15wt%SiO2 was prepared using fusion procedure and studied for the conversion of synthesis gas to light olefins. The effect of a range of operating variables such as the pressure, temperature and H2/CO molar feed ratio on the catalytic performance of fused catalyst was investigated. It was found that the best operating conditions are H2/CO=2/1, T=350°C and P=2 bar. The results are interpreted in terms of the structure of active catalyst. Characterization of both precursor and calcined catalysts was carried out using Powder X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and BET surface area measurements.

Keywords:

Co-Ce/SiO2 catalyst, fusion method, characterization.