Preparation of Bi/Fe molybdate coated catalysts doped with phosp

Details Preparation of Bi/Fe molybdate coated catalysts doped with phosp Preparation of Bi/Fe molybdate coated catalysts doped with phosp

1991-12-20

1993-06-22

Shine, W. J.

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

Catalyst or precursor therefor

Phosphorus or compound containing same

B01J 27185, B01J 27192, B01J 2378, B01J 3728

Patent

active

052216535

ABSTRACT:
Coated catalyst particulates, well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, and the coating layer of which comprising a catalytically active phase including a catalytically effective amount of bismuth and iron molybdate and dopant amounts of phosphorus and potassium, are prepared by providing a calcined and ground catalytically active intermediate composition devoid of phosphorus and potassium values, coating this intermediate composition onto a particulate support substrate comprising rough-surfaced inert and solid spheres, also coating phosphorus and potassium values onto the particulate support substrate, and then calcining the support particulates thus coated.

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