Vanadium-phosphorus-tin-mordenite oxidation catalysts

摘要

Oxidation catalysts having large surface areas and which are suitable for converting C4 to C10 hydrocarbons to maleic anhydride are disclosed, comprising the oxides of vanadium, phosphorus and tin in combination with hydrogen mordenite having a surface area between 100 M2/g to 450 M2/g and wherein the vanadium has an average valence in the range of from 3.5 to 4.95.