Process for preparation of high-silica faujasite type zeolite

Details Process for preparation of high-silica faujasite type zeolite Process for preparation of high-silica faujasite type zeolite

B - Operations, Transporting

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B01J 29/08 (2006.01) C01B 33/28 (1985.01)

Patent

CA 1215349

PROCESS FOR PREPARATION OF HIGH-SILICA FAUJASITE TYPE ZEOLITE ABSTRACT OF THE DISCLOSURE A faujasite type zeolite having a high SiO2/Al2O3 ratio is prepared by simultaneously and continuously supplying an aqueous solution of an alkali metal silicate and an aqueous solution of an aluminum-containing compound whereby the alkali metal silicate is continu- ously reacted with the aluminum-containing compound to prepare a homogeneous phase compound of a granular amorphous aluminosilicate containing aluminum in an amount of 10 to 16% by weight, as Al2O3 and based on the anhydride; and then, crystallizing the granular homogeneous phase amorphous aluminosilicate in an aqueous alkali metal hydroxide solution having a concentration of 4 to 10% by weight.

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