Preparation and Characterization of CoMn/TiO2 Catalysts for Production of Light Olefins

Abstract

<em>A series of x(Co, Mn)/TiO₂ catalysts (x</em><em>=</em><em>2–12wt.%) containing 25%Co and 75%Mn were prepared by the co-impregnation method. All prepared catalysts have been tested in Fischer-Tropsch synthesis for production of C₂-C₄ olefins. It was found that the catalyst containing 8wt.%(Co,Mn)/TiO₂ is an optimal catalyst for production of C₂-C₄ olefins. The effect of operation conditions such as the H₂/CO molar feed ratios, temperature,</em> <em>Gas Hourly Space Velocity (GHSV)</em> <em>and total reaction pressure on the catalytic performance of optimal catalyst was investigated. Characterizations of both precursors and catalysts were carried out using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET) specific surface area measurement, Thermal Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC).</em>