enhanced by manipulating the activity of transition metaloxides from strength to weakness, the conversion decreasedconcurrently as a result of suppressed adsorption andactivation of alkanes, thereby limiting the yield of olefins. Itshould be feasible to achieve a high yield by regulating theactivation of intrinsically selective catalysts for alkanes fromweakness to strength, which is a less studied topic andchallenging in the selective oxidation.