Preparation of mixed vanadium phosphorus oxide catalysts

Details Preparation of mixed vanadium phosphorus oxide catalysts Preparation of mixed vanadium phosphorus oxide catalysts

1984-08-14

1986-01-07

Doll, John

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

Catalyst or precursor therefor

Phosphorus or compound containing same

502210, 502211, 502212, 502213, B01J 27198, B01J 27188, B01J 2719, B01J 27192

Patent

active

045634394

ABSTRACT:
Vanadium phosphorus mixed oxide containing catalysts are prepared by sequentially forming an alpha-VOPO.sub.4 catalyst precursor in aqueous media, and thereafter partially reducing a portion of the vanadium to a valence state of +4 in an organic liquid reducing media, in the absence of corrosive reducing agents. The catalysts exhibit excellent activity for the production of maleic anhydride from 4 carbon atom hydrocarbons such as n-butane.

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patent: 4416802 (1983-11-01), Udovich et al.

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