Dehydrogenation catalyst and process

Details Dehydrogenation catalyst and process Dehydrogenation catalyst and process

1988-12-23

1989-11-14

Pal, Asok

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502327, 502328, 502330, 502349, 502352, 502514, 502523, 502527, 585660, B01J 2104, B01J 2358, B01J 2362

Patent

active

048807648

ABSTRACT:
A novel catalytic composite and a process of its use is disclosed. The catalyst comprises a platinum group metal component, a first modifier component selected from Group IA and IIA elements of the Periodic Table, a second modifier components selected from the group of elements consisting of palladium, iridum, and osmium, and a third modifier component selected from the elements of Group IVA of the Peridoic Table of the Elements. All of the catalytic components are located on a refractory oxide support having a nominal diameter (d) of from 50 to 1000 microns. The catalytic composite is characterized in that the second modifier component is surface-impregnated upon the support in such a manner that the average concentration of the surface-impregnated second modifier component on the outside 0.2d micron catalyst layer is at least 2 times the average concentration of the second modifier component in 0.4d micron diameter center core of the catalyst where d is the nominal diameter, and wherein the first modifier metal component is uniformly impregnated. The catalytic composite has been found to be most useful in the dehydrogenation of dehydrogenatable hydrocarbons.

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patent: 4827072 (1989-05-01), Imai

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