Active crystal face of vanadyl pyrophosphate for selective oxidation of n-butane

Abstract

The crystal faces of (VO) 2 P 2 O 7 have different reactivities for butane oxidation to maleic anhydride (MA). The (100) face is selective for formation of MA, and the side faces, such as (001) are active for non selective oxidation to CO and CO 2 . The addition of H 3 PO 4 to vanadyl pyrophosphate enhances the selectivity to MA at high conversion levels, while the activities decreases