Method of producing zeolite y

Details Method of producing zeolite y Method of producing zeolite y

1996-08-26

1999-03-09

Lewis, Michael

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

Zeolite or clay, including gallium analogs

Faujasite type

502 85, 423713, 423714, B01J 2908

Patent

active

058800530

ABSTRACT:
Y zeolites with an SiO.sub.2 /Al.sub.2 O.sub.3 ratio in the framework of>100 with a high hydrothermal stability and resistance to aqueous, alkaline solutions are produced by treating a Y zeolite with a SiO.sub.2 /Al.sub.2 O.sub.3 ratio between 8 and 50, partially dealuminized according to known methods from NaY zeolite by treatment with silicon tetrachloride, with water vapor at temperatures between 500.degree. C. and 1000.degree. C.

REFERENCES:
patent: 4840930 (1989-06-01), LaPierre et al.
patent: 5534135 (1996-07-01), Dai et al.
Scherzer; "Dealuminated Faujasite-Type Structures with SiO.sub.2 l Al.sub.2 O.sub.3 Ratios over 100"; Journal of Catalyris: 285-288, 1978.
G. J. Ray et al., Zeolites (1988) vol. 8, pp. 458-462.

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