Aromatic carboxylic anhydride catalyst

Details Aromatic carboxylic anhydride catalyst Aromatic carboxylic anhydride catalyst

1989-05-17

1990-06-05

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549245, 549248, 549253, 549258, C07D30789, C07D49304

Patent

active

049315722

ABSTRACT:
In accordance with the process of this invention, an improved titanium dioxide rutile-based catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the rutile form a discontinuous monolayer amount of at least one source of a Group IA metal oxide; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the Group IA metal oxide source into the corresponding Group IA metal oxide; (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating; and (d) calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

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