Selective oxidation of isobutane over Mo-V-Te mixed oxide catalysts with different tellurium contents

A series of MoV 0.3 Te x ( x = 0−0.3) mixed oxides were prepared and investigated for the selective oxidation of isobutane. Among them, MoV 0.3 Te 0.23 showed the best methacrolein and methacrylic acid selectivity (as high as 17% and 16%, respectively), and the yield to methacrolein and methacrylic acid reached 3.6% and 3.5%, respectively, at 21.3% isobutane conversion at 440°C.