Platinum-palladium catalyst for selective hydrogenation of aromatics and olefins in hydrocarbon fractions
AssigneeAshland Oil, Inc.
InventorsStephen M. Kovach, George D. Wilson
Life of this patent
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Abstract
Hydrocarbon fractions boiling between 180.degree. and 600.degree. F. and containing aromatics, olefins, and sulfur and nitrogen compounds are hydrogenated with a platinum-palladium catalyst to reduce the concentration of aromatics and olefins. The catalyst is prepared by saturating a porous inert carrier, preferably alumina, with an aqueous acid solution of chloroplatinic acid and palladium (ous) chloride in a specified mole ratio of platinum to palladium. The saturated carrier is subsequently dried, calcined and reduced.
Claims6
A hydrogenation catalyst consisting of between about 0.2 and about 1 percent by weight each of platinum and palladium in a mole ratio of platinum to palladium of between about 1 to 2 and about 1 to 6 supported on an inert carrier.
A hydrogenation catalyst consisting of between about 0.2 and about 1.0 percent by weight each of platinum and palladium in a mole ratio of platinum to palladium of between about 1 to about 2 and about 1 to 6 and between about 1.2 to about 2.5 percent by weight of chlorine as chloride.
Dependencies are inferred from the claim text.