Coated catalysts containing high loading of active phase, partic

Details Coated catalysts containing high loading of active phase, partic Coated catalysts containing high loading of active phase, partic

1979-12-17

1982-01-26

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

26034675, 252430, B01J 2714, C07D30760, B01J 3102

Patent

active

043127878

ABSTRACT:
Catalysts particularly effective in the oxidation of n-butane, n-butenes, 1,3 butadiene and mixtures thereof with molecular oxygen or an oxygen-containing gas in the vapor phase to produce maleic anhydride are provided which comprise an essentially inert, at least partially porous support to which is adhered on its outer surface, catalytically active mixed oxides of vanadium and phosphorus or of vanadium, phosphorus and uranium in an amount greater than 50% to about 80% by weight of the combined support and active oxide.

REFERENCES:
patent: 3474041 (1969-10-01), Kerr
patent: 3907835 (1975-09-01), Kobylinski et al.
patent: 3980585 (1976-09-01), Kerr et al.
patent: 4043943 (1977-08-01), Schneider
patent: 4056487 (1977-11-01), Kerr
patent: 4077912 (1978-03-01), Dolhyj et al.
patent: 4097501 (1978-06-01), Dolhyj et al.
patent: 4132670 (1979-01-01), Katsumoto et al.
patent: 4165299 (1979-08-01), Pedersen
patent: 4172084 (1979-10-01), Bremer
patent: 4178298 (1979-12-01), Stefani et al.

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