Reforming with multimetallic catalysts

Details Reforming with multimetallic catalysts Reforming with multimetallic catalysts

1978-01-30

1979-08-28

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252434, 208139, B01J 2702, B01J 2700

Patent

active

041660463

ABSTRACT:
A catalyst composition, and process, useful in reforming a hydrocarbon feed at reforming conditions without excessive hydrogenolysis, a phenomenon which is normally particularly acute during the startup of a reactor. The catalyst is constituted of a composite which includes a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, iridium, and selenium. Hydrogenolysis is suppressed, and significantly greater yields of higher octane C.sub.5 + liquid product are obtained by contact of the selenium promoted iridium-containing catalyst with oxygen prior to contact of the catalyst with a hydrocarbon fraction at reforming conditions. Suitably, the oxygen pretreatment is conducted by contact of the catalyst with an oxygen containing gas at elevated temperatures.

REFERENCES:
patent: 2851399 (1958-09-01), Brennan et al.
patent: 3554902 (1971-01-01), Buss
patent: 3649704 (1972-03-01), Hayes
patent: 3660271 (1972-05-01), Keith et al.
patent: 3761426 (1973-09-01), Wilhelm
patent: 3790473 (1974-02-01), Rausch
patent: 3884799 (1975-05-01), Mahoney et al.
patent: 3936369 (1976-02-01), Hayes
patent: 3968053 (1976-07-01), Rausch

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