Molybdovanadophosphoric heteropoly compounds are sorts of replaced heteropoly compounds. A series of (NH_4)_(n+3)PMo_(12-n)V_nO_(40) were synthesized and characterized, the catalytic behavior of the heteropoly compounds was studied.

• 钼钒磷酸铵(NH_4)_(n+3)PMO_(12-n)V_nO_(40)是一系列取代型杂多化合物。