Phillips Petroleum Company

Other

Roger N McGinnis

Lewis E Drehman

Emory W Pitzer

Floyd E Farha, Jr

Lloyd E Gardner

Platinum or other platinum-group metals can be deposited substantially on the surface only of pellets of a refractory catalyst support by impregnation with an aqueous solution of such as hexammonium platinum tetrasulfite. The resulting catalysts contain relatively small total amounts of platinum-group metal positioned primarily at the surface, yet are as highly active as catalysts uniformly impregnated throughout the body of the pellet and containing much larger amounts of platinum-group metal. The catalyst further can contain rhenium.

Dehydrogenation process

Platinum or other platinum-group metals can be deposited substantially on the surface only of pellets of a refractory catalyst support by impregnation with an aqueous solution of such as hexammonium platinum tetrasulfite. The resulting catalysts contain relatively small total amounts of platinum-group metal positioned primarily at the surface, yet are as highly active as catalysts uniformly impregnated throughout the body of the pellet and containing much larger amounts of platinum-group metal. The catalyst further can contain thenium.

Platinum group metal catalyst on the surface of a support and a process

Polynuclear aromatic reactants are selectively hydrogenated in the presence of hydrogen gas with a zinc titanate catalyst.

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Bartlesville, OK, United States of America

Roger N McGinnis