Method for preparing high silica faujacitic zeolites

Details Method for preparing high silica faujacitic zeolites Method for preparing high silica faujacitic zeolites

1998-03-17

2000-04-25

Koslow, C. Melissa

Chemistry of inorganic compounds

Zeolite

Isomorphic metal substitution

423714, 423715, 423DIG21, 502 79, 502 85, 502 86, C01B 3920

Patent

active

06054113&

ABSTRACT:
A method for preparing novel zeolitic catalyst compositions having a high Si/Al ratio and a crystallinity of at least about 70%. The method involves cation exchanging an as synthesized faujasite material having an Si/Al greater than about 4 with a component selected from the group consisting of ammonium ions and mineral acids, then steam calcining said cation exchanged faujasite in a single steam calcination step at a temperature from about 900.degree. F. to about 1 500.degree. F.

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