Selective oxidation of isobutane over HxFe0.12Mo11VPAs0.3Oy heteropoly compound catalyst

H4PMo11VO40-based heteropoly catalysts modified with transition metals were synthesized and applied in the selective oxidation of isobutane. A conversion of 23.9% and desirable selectivity to MAA of 69.9% can be obtained under optimal conditions over the catalyst HxFe0.12Mo11VPAs0.3Oy. The Fe modification resulted in the improvements in both conversion and selectivity to MAA. In addition, the modification with As makes for the enhancement of selectivity to MAA, while the addition of K or Cs causes a negative effect on the catalytic property.