Conversion of Ethane to Ethylene in the Presence of Carbon Dioxide over Cr-K/TiO2-ZrO2 Nanocatalyst

Abstract:TiO2-ZrO2 combined support with composition of 25wt% ZrO2 and 75wt% TiO2 was prepared bycoprecipitation method and impregnated with 5 wt% of Cr2O3 and 3 wt% of K2O. The synthesized samples werecharacterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energydispersive X-ray (EDX), and Brunauer-Emmett-Teller (BET) surface area. All characterization studies revealed that thedeposition of Cr2O3 and K2O on the TiO2-ZrO2 combined support had obvious effect on the crystal structure, texturecharacteristic, and catalytic activity in the oxidative dehydrogenation of ethane to ethylene by carbon dioxide as a softoxidant.Cr-K/TiO2-ZrO2 catalyst exhibited high performance towards the selective conversion of ethane to ethylene inthe presence of CO2, wherein Cr2O3 improved the conversion of ethane as a redox active phase and K2O enhance theselectivity of ethylene acting as a basic promoter.Keywords:Cr-K/TiO2-ZrO2; Dehydrogenation; Ethane; Ethylen

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NEPCM-slurry ، Microheat sink ، Thermal conductivity ، Heat flux