Coated catalysts containing high loading of active phase,...

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

B - Operations, Transporting

01

J

252/95, 260/365.

B01J 27/18 (2006.01) C07D 307/60 (2006.01)

Patent

CA 1160207

COATED CATALYSTS CONTAINING HIGH LOADING OF ACTIVE PHASE, PARTICULARLY USEFUL IN THE PREPARATION OF MALEIC ANHYDRIDE 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, catalyti- cally 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.

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