Process for preparing aromatic carboxylic anhydride

Details Process for preparing aromatic carboxylic anhydride Process for preparing aromatic carboxylic anhydride

1988-06-30

1989-09-05

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549236, 549245, 549248, 549253, 549259, 549258, C07D30789

Patent

active

048640360

ABSTRACT:
In accordance with the process of this invention, an improved 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 anatase form a discontinuous monolayer amount of at least one source of a Group VIB metal oxide; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the Group VIB metal oxide source into the corresponding group VIB metal oxide; (c) depositing upon amount of at least one vanadium oxide source which is calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

REFERENCES:
patent: 4582911 (1986-04-01), Wachs et al.
patent: 4582912 (1986-04-01), Saleh et al.
patent: 4728744 (1988-03-01), Saleh et al.

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