Catalytic hydrogenation process and a catalyst for use in the pr

Details Catalytic hydrogenation process and a catalyst for use in the pr Catalytic hydrogenation process and a catalyst for use in the pr

1995-06-06

1997-07-15

McGinty, Douglas J.

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Hydrocarbon is contaminant in desired hydrocarbon

585259, 502328, 502330, 502333, 502439, C07C 509, B01J 2104, B01J 2358, B01J 2344

Patent

active

056485760

ABSTRACT:
A process for the selective hydrogenation in the gas phase of acetylene compounds containing 2 or 3 carbon atoms to the corresponding ethylene compounds in the presence of a catalyst in the form of spherules or extradates containing an alumina support, 0.01-0.5% by weight palladium, 0.001 to 0.5% by weight of at least one group IB metal, preferably silver, and optionally at least one alkaline or alkaline-earth metal, the weight ratio of the group IB metal to palladium being 0.05:1 to 0.25:1, in which catalyst at least 80% of the palladium and at least 80% of the group IB element are present in a volume at a periphery of the catalyst defined between a spherical or cylindrical surface of radius r.sub.1 corresponding to the average spherule or extradate diameter and a spherical or cylindrical surface of radius r.sub.2 at least equal to 0.8r.sub.1.

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