Two step process for the preparation of zeolite A by hydrotherma

Details Two step process for the preparation of zeolite A by hydrotherma Two step process for the preparation of zeolite A by hydrotherma

1982-01-28

1983-08-30

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423328, 423329, C01B 3328

Patent

active

044016344

ABSTRACT:
A two step hydrothermal process for the preparation of zeolite A from clinoptilolite by (1) heat treating a mixture of clinoptilolite in an aqueous solution of sodium hydroxide and filtering the mixture followed by (2) reacting the filtrate with at least 75 percent of a stoichiometric amount of sodium aluminate to form and precipitate zeolite A from solution and recovering zeolite A.

REFERENCES:
patent: 3733390 (1973-05-01), Robson
patent: 4247524 (1981-01-01), Leonard
patent: 4310496 (1982-01-01), Achenbach et al.
Robson et al., "Molecular Sieves--II", ACS Symposium Series 40, 1977, pp. 233-243.

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