Maleic anhydride process

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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549259, C07D30760

Patent

active

046476733

ABSTRACT:
A process is provided for the preparation of attrition resistant, microspheroidal fluid bed catalysts comprising the mixed oxides of vanadium and phosphorus in which a vanadium phosphorus mixed oxided catalyst precursor is densified, comminuted, formed into fluidizable particles and calcined under fluidization-type conditions. The present invention further provides the attrition resistant fluidizable catalysts prepared by the inventive process, and further provides a process for utilizing such attrition resistant catalysts in the production of maleic anhydride in the vapor phase by the oxidation of 4 carbon atom hydrocarbons.

REFERENCES:
patent: 3625863 (1971-12-01), Heller et al.
patent: 3975300 (1976-08-01), Burress
patent: 4333853 (1982-06-01), Milberger et al.

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