Method for producing highly siliceous zeolites

Details Method for producing highly siliceous zeolites Method for producing highly siliceous zeolites

1987-04-20

1990-05-08

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423329, C01B 3328

Patent

active

049236903

ABSTRACT:
Large pore size zeolites produced with organic cations in the synthesis mixture are synthesized with high silica:alumina ratios by terminating the crystallization when the product is partly crystalline, preferably 30% to 90 % crystalline by X-ray diffraction measurement. The method is particularly useful with zeolite beta to produce a partly crystalline product with higher silica:alumina ratio by direct synthesis.

REFERENCES:
patent: 3308069 (1967-03-01), Wadlinger et al.
patent: 4570027 (1986-02-01), Boucher et al.
Nature, 289 (1981), 782-783, von Ballmoos et al.

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