Process of preparing carboxylic anhydride

Details Process of preparing carboxylic anhydride Process of preparing carboxylic anhydride

1988-04-11

1989-05-16

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549235, 549236, 549248, 549256, 549257, 549258, C07D30789

Patent

active

048311642

ABSTRACT:
In accordance with the process of this invention, an improved catalyst for molecular oxidation of hydrocarbons to form the corresponding carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide catalyst solids in the anatase form a continuous monolayer amount of at least one source of titanium oxide, calcining the thus-formed catalyst percursor under conditions sufficient to convert the titanium oxide source into the oxide form, depositing upon the calcined catalyst precursor a continuous monolayer amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

REFERENCES:
patent: 3464930 (1969-09-01), Friedrichsen et al.
patent: 3509179 (1970-04-01), Friedrichsen et al.
patent: 3894971 (1975-07-01), Reuter et al.
patent: 4582911 (1986-04-01), Wachs et al.
patent: 4582912 (1986-04-01), Wachs et al.
patent: 4728744 (1988-03-01), Saleh et al.
Matsuda et al., Applied Catalysts, vol. 8, (1983), pp. 149-165.

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