Catalysts for the gaseous phase oxidation of olefins into .alpha

Details Catalysts for the gaseous phase oxidation of olefins into .alpha Catalysts for the gaseous phase oxidation of olefins into .alpha

1991-12-20

1993-07-06

Shine, W. J.

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

Catalyst or precursor therefor

Boron or compound containing same

502212, 568480, B01J 27185, B01J 27188, B01J 27192

Patent

active

052253899

ABSTRACT:
Catalyst compositions well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, comprise a particulate support substrate uniformly coated with 15% to 33% by weight of an adherent layer of a catalytically active phase, such support substrate comprising inert and solid spheres having a diameter ranging from 0.5 to 6 mm, such catalytically active phase comprising a catalytically effective amount of bismuth and iron molybdate, dopant amounts of phosphorus and potassium and, optionally, at least one other catalytically active metal or non-metal, and the phosphorus and the potassium each being present in such catalytically active phase in an atomic quantity ranging from 0.005 to 0.06 per 12 atoms of molybdenum, or of molybdenum plus any tungsten therein.

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