Catalysts Based on High-Vanadium Solutions of Molybdovanadophosphoric Heteropolyacids: Achievements, Challenges, and Prospects

Abstract

A retrospective review based on the authors’ work is devoted to homogeneous catalytic systems based on aqueous solutions of Mo–V–P heteropolyacids (HPA-x, x is the number of vanadium atoms). These catalytic systems were first proposed for oxidative reactions at Boreskov Institute of Catalysis. The properties of HPA-x solutions, methods for their synthesis, promising processes occurring in their presence, problems related to the use of these solutions, and ways of solving these problems are considered. Prospects for the creation of industrial processes based on modified high-vanadium HPA-x solutions of non-Keggin compositions are shown.