Catalyst for oxidation reactions and process for its production

Details Catalyst for oxidation reactions and process for its production Catalyst for oxidation reactions and process for its production

1977-05-23

1980-01-01

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252437, 252411R, B01J 2714, B01D 1506

Patent

active

041816285

ABSTRACT:
Activated catalyst for oxidation reactions on the basis of mixed oxides of vanadium and phosphorus, characterized in that the vanadium has an average valence of less than +3.9. The activated catalyst is produced using a process wherein a mixed oxide, in which the vanadium has an average valence of +3.9 to more than +4, is activated at temperatures of 300.degree. to 500.degree. C. by passing over it a gaseous hydrocarbon component having 2 to 6 carbon atoms with the exclusion of molecular oxygen. The activated catalyst is used for the production of maleic anhydride from straight-chain C.sub.4 -hydrocarbons in the gaseous phase.

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