Process for producing a vanadium-phosphorus oxide catalyst precu

Details Process for producing a vanadium-phosphorus oxide catalyst precu Process for producing a vanadium-phosphorus oxide catalyst precu

1995-06-07

1997-01-07

Pal, Asok

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549262, B01J 27198

Patent

active

055918700

ABSTRACT:
A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.

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patent: 5021384 (1991-06-01), Hatano et al.
patent: 5128299 (1992-07-01), Hatano et al.
patent: 5496787 (1996-03-01), Hatano et al.
patent: 5498731 (1996-03-01), Tsurita et al.

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