Alkylation process using dual metal ultrastable Y zeolite

Details Alkylation process using dual metal ultrastable Y zeolite Alkylation process using dual metal ultrastable Y zeolite

1991-05-24

1992-09-08

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 73, B01J 2908

Patent

active

051458179

ABSTRACT:
A process for the alkylation/transalkylation of benzene is improved by the use of a catalyst prepared by exchanging a sodium Y zeolite with an ammonium salt to replace from about 40 percent to about 90 percent of the sodium ions with ammonium ions; calcining the resulting ammonium-sodium zeolite in steam under conditions sufficient to reduce the unit cell size to about 24.48 to 24.60 angstroms; contacting the calcined catalyst with a rare earth salt and an aluminum salt either simultaneously or sequentially; and calcining the catalyst a second time in the absence of steam.

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