Preparation of fluidizable vanadium phosphorus oxide catalysts and use thereof in production of maleic anhydride.

摘要

Procedure for the production of maleic anhydride. It consists in oxidizing hydrocarbons of four carbon atoms with molecular oxygen, in a fluidified bed reactor, at a reaction temperature of 250 to 600 degrees and in the presence of a fluidifiable and microsphereidal catalyst, containing mixed vanadium and phosphorus oxides. The catalyst is prepared by introducing at least one pentavalent vanadium compound in an organic liquid capable of reducing at least one portion of vanadium to a state of valencia of b4. (Machine-translation by Google Translate, not legally binding)