Process for the preparation of a highly active and selective amm

Details Process for the preparation of a highly active and selective amm Process for the preparation of a highly active and selective amm

1998-03-10

1999-09-14

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502200, 502353, C07D21357, B01J 2724

Patent

active

059525088

ABSTRACT:
This invention relates to a process for the preparation of highly active and selective ammoxidation catalyst of formula (VO).sub.2 P.sub.2 O.sub.7, TiO.sub.2 or (VO).sub.2 P.sub.2 O.sub.7, Al.sub.2 O.sub.3, which process comprises refluxing a vanadium source in the presence of alcohols; adding a source of phosphorous to form vanadyl pyrophosphate hydrate (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 or (VO).sub.2 P.sub.2 O.sub.7.2H.sub.2 O; Physical mixing of (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 with oxides selected from titania or alumina, and heating the resultant mixture in the presence of air at a temperature in the range of 300-600.degree. C. for a period in the range of 1 to 10 hours; and the use of said ammoxidation catalyst in the preparation of heteroaromatic nitrites.

REFERENCES:
patent: 3970659 (1976-07-01), Elion et al.
patent: 4778890 (1988-10-01), Shimizu
patent: 4939260 (1990-07-01), Inoue
patent: 4963687 (1990-10-01), Saito

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