Zeolite octane additive-cracking process

Details Zeolite octane additive-cracking process Zeolite octane additive-cracking process

1993-12-16

1995-01-17

Dees, Carl F.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

C10G 1105

Patent

active

053823516

ABSTRACT:
When a zeolite additive composition of a medium-pore zeolite with a Constraint Index from about 1 to about 12 and a silica to alumina mole ratio greater than about 12 is added to a conventional cracking catalyst dispersed in an inorganic matrix, the octane will be improved, but there will be a yield loss in the amount of gasoline produced. An improvement in that catalyst system is obtained by partially exchanging the medium-pore zeolite additive with cations from one or more elements of Group IA, Group IIA or Group IIIA excluding rare earths of the Periodic Table. The octane number of the gasoline-range product of an FCC process is still improved while the amount of the gasoline yield loss typically observed for such octane-enhancing additives is reduced.

REFERENCES:
patent: 3758402 (1973-09-01), Oleck et al.
patent: 3758403 (1973-09-01), Rosinski et al.
patent: 5318696 (1994-06-01), Kowalski

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