Manufacture of synthetic zeolites

Details Manufacture of synthetic zeolites Manufacture of synthetic zeolites

1972-08-30

1977-04-05

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C01B 3328

Patent

active

040162460

ABSTRACT:
The invention provides a method of preparing zeolite Y of high degree of purity and having a silica to alumina molar ratio of from greater than 3 up to about 6.2 which comprises preparing an aluminosilicate reaction mixture having oxide molar ratios of SiO.sub.2 /Al.sub.2 O.sub.3, Na.sub.2 O/SiO.sub.2 and H.sub.2 O/Na.sub.2 O lying within specified ranges, at least part of the siliceous component of the reaction mixture being a particular hydrated sodium metasilicate and then heating the reaction mixture until zeolite Y crystallizes from the reaction mixture, the particular hydrated sodium metasilicate being defined by its ability to form substantially pure zeolite X under specified conditions.

REFERENCES:
patent: 2904607 (1959-09-01), Mattox et al.
patent: 2971903 (1961-02-01), Kimberlin et al.
patent: 3055841 (1962-09-01), Gladrow et al.
patent: 3058805 (1962-10-01), Weber
patent: 3130007 (1964-04-01), Breck
patent: 3310373 (1967-03-01), Johnson

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