Oxidative dehydrogenation of ethane over alumina-supported Pd catalysts. Effect of alumina overlayer

► Forty-five-layer alumina overcoat greatly suppressed coke formation. ► Pd/Al2O3 with overcoat exhibited high ethene selectivity at 675 °C in ethane OXD. ► Pd metal is effective for selective dehydrogenation of ethane at high temperatures.