Oxidative dehydrogenation (ODH) of ethane is an attractive route for ethylene production. It requires lower energy consumption and minimizes coke formation due to the presence of oxygen in the reaction mixture. Molybdenum-vanadium mixed oxides supported on alumina with a third metal promoter aimed to enhance the catalytic reactivity were studied for oxidative dehydrogenation of ethane to obtain ethylene. Mo0.8V0.2-xMex/g-Al2O3 catalysts, where Me is a third metal with composition (x) varying from 0.05 to 0.2, with the total metal loading fixed at 20% by weight were prepared by using incipient wetness impregnation technique. The prepared catalysts were characterized by several techniques including BET surface area analysis and X-ray diffraction. Their catalytic performance was investigated at temperatures of 400, 450 and 500 degree celsius under atmospheric pressure. The reaction was carried out in a fixed-bed reactor with feed ratio of 20% ethane to 10% oxygen balanced with helium. The contact time, i.e., W/F ratio where W is the catalyst weight and F is the total feed flow rate, was fixed at 0.54 g.s.cm-3. The best catalyst provides relatively high ethylene yield (&gt;20%) at 500 degree celsius. Introduction of third metal into Mo-V/g-Al2O3 system helps improving ethylene selectivity with a slightly modified ethane conversion.

Oxidative dehydrogenation of ethane to ethylene over molybdenum-vanadium based catalysts

254th National Meeting (2017)

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