Activated zeolite beta and its use for hydrocarbon conversion

Details Activated zeolite beta and its use for hydrocarbon conversion Activated zeolite beta and its use for hydrocarbon conversion

1993-07-26

1995-02-28

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 60, 502 85, B01J 2906, B01J 3708

Patent

active

053937180

ABSTRACT:
The present invention relates to a zeolite beta catalyst characterized by critical limits of weak and strong acid species and exceptionally high catalytic activity. The catalyst is activated at a temperature effective to substantially reduce the concentration of strong acid species, i.e., hydronium cations, without substantially reducing the concentration of weak acid species, i.e., hydroxoaluminum cations, preferably following a calcining step wherein a synthesized zeolite beta catalyst containing a templating agent is calcined at a temperature in the range of from about 200.degree. to 1000.degree. C. in order to remove a substantial portion of the catalyst templating agent and an ion-exchanging step wherein the calcined catalyst is ion-exchanged with a salt solution containing at least one hydrogen forming cation selected from NH.sub.4.sup.+ and quaternary ammonium. Conversion processes utilizing the catalyst of the invention also are disclosed.

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