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US 4,392,989 AGranted
Zinc-gallium zeolite
AssigneeMobil Oil Corporation
InventorsYung F. Chu, Arthur W. Chester
Life of this patent
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Abstract
The elution of zinc from zinc-impregnated zeolite catalysts is minimized by incorporating gallium into the catalyst composition. Optionally, palladium may also be included in the composition. The catalyst composition is used to effect the conversion of propane in hydrocarbon streams to aromatic hydrocarbons.
Claims6
A catalyst composition comprising by weight between about 0.1 and about 2 percent of gallium, between about 0.05 and about 8 percent of zinc, and a crystalline zeolite characterized by a constraint index within the approximate range of 1 to 12, and a silica to alumina ratio of at least 12.
Dependencies are inferred from the claim text.