Process for the preparation of high-level ion-exchanged forms of

Details Process for the preparation of high-level ion-exchanged forms of Process for the preparation of high-level ion-exchanged forms of

1983-10-19

1985-12-03

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423331, 423332, 502 85, 502 86, C01C 300

Patent

active

045565503

ABSTRACT:
A process is provided for achieving a high degree of exchange for zeolites, e.g., Zeolites F and W. After preparation of the ammonium form, the zeolite is contacted with a solution containing the desired metal cation while simultaneously maintaining the pH at between about 9.0 and 12.0 to provide a final product zeolite wherein the desired metal cation will correspond to at least about 0.5 of the total zeolitic cations.

REFERENCES:
patent: 2996358 (1961-08-01), Milton
patent: 3012853 (1961-12-01), Milton
patent: 3503901 (1970-03-01), Rickert
patent: 3723308 (1973-03-01), Breck
patent: 3732326 (1973-05-01), Chen
patent: 3985859 (1976-10-01), Blaine
patent: 4122007 (1978-10-01), Yamamoto et al.
patent: 4344851 (1982-08-01), Sherman et al.

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