Oxidative dehydrogenation of isobutane on supported chromia catalysts Original Research Article

Oxidative dehydrogenation, ODH, of isobutane has been performed on chromia supported on SiO2, Al2O3, TiO2, ZrO2 and MgO. The potassium promoted (K/Cr= 0.1) catalysts have also been examined. The supported chromia has been found active in the ODH of isobutane at relatively low temperatures 200–400°C, the total activity and selectivity to isobutene depending on the nature of the support and the potassium presence. The highest selectivities to isobutene (ca. 70% at 5% conversion) and the isobutene yields of ca. 9% have been obtained for Cr/OxTiO2 and K-promoted CrOx/Al2O3 preparations.