Technique to reduce the zeolite molecular sieve solubility in an

Details Technique to reduce the zeolite molecular sieve solubility in an Technique to reduce the zeolite molecular sieve solubility in an

1979-06-15

1981-02-03

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455Z, 127 46R, 127 46B, B01J 2018, B01J 2022

Patent

active

042487374

ABSTRACT:
An improved adsorbent comprising a crystalline aluminosilicate, method of manufacture of the adsorbent and improved process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides. In the process the mixture is contacted with the adsorbent, which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the adsorbent and process comprises the incorporation of a binder material in the adsorbent comprising a water permeable organic polymer which substantially reduces the undesirable dissolution. The adsorbent is manufactured by mixing together powder of the crystalline aluminosilicate, powders of the organic polymer binder, and a liquid organic solvent, extruding the mixture into an extrudate and drying the extrudate.

REFERENCES:
patent: 3228877 (1966-01-01), Mahon
patent: 3262890 (1966-07-01), Mitchell et al.
patent: 3951859 (1976-04-01), Inaba et al.
patent: 4014711 (1977-03-01), Odawara et al.

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