Preparation and Characterization of CoMn/TiO۲ Catalysts for Production of Light Olefins

A series of x(Co, Mn)/TiO۲ catalysts (x=۲–۱۲wt.%) containing ۲۵%Co and ۷۵%Mn were prepared by the co-impregnation method. All prepared catalysts have been tested in Fischer-Tropsch synthesis for production of C۲-C۴ olefins. It was found that the catalyst containing ۸wt.%(Co,Mn)/TiO۲ is an optimal catalyst for production of C۲-C۴ olefins. The effect of operation conditions such as the H۲/CO molar feed ratios, temperature, Gas Hourly Space Velocity (GHSV) 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).

کلیدواژه ها:

Co-impregnation ، Fischer-Tropsch synthesis ، Operation Conditions ، Catalytic performance