Process for the production of aluminum silicates

Details Process for the production of aluminum silicates Process for the production of aluminum silicates

1976-03-15

1980-09-16

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

252 891, 252131, 423328, C01B 3328

Patent

active

042229952

ABSTRACT:
Alkali aluminum silicates, particularly a zeolitic molecular sieve powder with an average particle diameter of less than 10.mu. and having the portion of particles with a particle size above 45.mu. being less than 1 weight % are prepared by hydrothermal crystallization of an alkali aluminate-silicate mixture, separating the crystallization product from the mother liquor and drying with the proviso that the aqueous medium surrounding the crystallization product is adjusted to a pH value between 8.5 and 11 prior to the drying. The product is used as an ion exchanger, e.g., in dehardening water, particularly as a phosphate substitute in washing, rinsing and cleansing agents.

REFERENCES:
patent: 2882243 (1959-04-01), Milton
patent: 3310373 (1967-03-01), Johnson
patent: 3789107 (1974-01-01), Elliott
patent: 3864282 (1975-02-01), Young
patent: 3985669 (1976-10-01), Krummel et al.

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