Preparation of vanadium-phosophorus-oxide catalyst precursor

Details Preparation of vanadium-phosophorus-oxide catalyst precursor Preparation of vanadium-phosophorus-oxide catalyst precursor

1990-12-19

1992-04-28

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Phosphorus or compound containing same

423307, 549259, B01J 27198, C01B 1516, C07D 3734

Patent

active

051089742

ABSTRACT:
Vanadium pentoxide can be reduced to the +4 oxidation state from the +5 state, in the manufacture of vanadium-phosphorus-oxide catalyst precursor, (VO).sub.2 H.sub.4 P.sub.2 O.sub.9, by using phosphoric acid as the reducing agent rather than benzyl alcohol. Use of an alkyl silicate with the phosphoric acid insures the correct crystalline species, (VO).sub.2 H.sub.4 P.sub.2 O.sub.9, as indicated by X-ray diffraction.

REFERENCES:
patent: 4062873 (1977-12-01), Harrison
patent: 4064070 (1977-12-01), Harrison
patent: 4382876 (1983-05-01), Neubold et al.
patent: 4632916 (1986-12-01), Bither, Jr.
patent: 4677084 (1987-06-01), Bergna

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