Catalyst for dehydrocyclization of paraffins

Details Catalyst for dehydrocyclization of paraffins Catalyst for dehydrocyclization of paraffins

1974-08-22

1976-04-27

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2906

Patent

active

039533654

ABSTRACT:
Process of dehydrocyclizing C.sub.6 -C.sub.10 paraffins using a sodium zeolite X or sodium zeolite Y, which zeolite has been ion exchanged with from 0.10 to 1.2 weight percent platinum, the catalyst calcined and the platinum then reduced with hydrogen to the free metal. Said catalyst is characterized by its rather high platinum dispersion. In an especially preferred aspect of the invention, the catalyst is given a final ion exchange with a sodium salt such as sodium bicarbonate. The dehydrocyclization reaction is carried out at from 500.degree. to 560.degree.C and preferably from 510.degree. to 555.degree.C using a partial pressure of hydrogen of from 10 to 300 p.s.i.g. and preferably 50 to 200 p.s.i.g. to form benzene and alkylbenzenes.

REFERENCES:
patent: 3376215 (1968-04-01), Bertolacini et al.
patent: 3437586 (1969-04-01), Weisz
patent: 3527836 (1970-09-01), Turner et al.

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