Catalyst preparative method

Details Catalyst preparative method Catalyst preparative method

1975-02-07

1977-04-05

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252435, 2603468R, B01J 2718

Patent

active

040161056

ABSTRACT:
C.sub.4 vanadium - phosphorus oxidation catalysts for producing maleic acid are prepared in an aqueous phosphoric acid solution using a reducing agent comprising an organic acid or aldehyde and a secondary alcohol such as oxalic acid and ethanol in a mole of 1:1 to 3 respectively, in which an inorganic vanadium compound such as V.sub.2 O.sub.5 is dissolved and reduced to vanadium of 5.sup.+ valency or less.

REFERENCES:
patent: 3156707 (1964-11-01), Kerr
patent: 3433823 (1969-03-01), McMahon
patent: 3864280 (1975-02-01), Schneider

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