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

1982-06-11

1984-02-14

Schor, Kenneth M.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 55, 210679, 210691, 210673, C13D 312

Patent

active

044314566

ABSTRACT:
An 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 a zeolite 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 zeolite to dissolve in the aqueous system. The improvement to the process comprises the impregnation of the zeolite with a binder material comprising a water permeable organic polymer which substantially reduces the undesirable dissolution. The adsorbent is manufactured by mixing together powder of the zeolite, powders of the organic polymer binder, and a liquid organic solvent, extruding the mixture into an extrudate and drying the extrudate.

REFERENCES:
patent: 3262890 (1966-07-01), Mitchell et al.
patent: 3951859 (1976-04-01), Inaba et al.
patent: 4014711 (1977-03-01), Odawara et al.
patent: 4238243 (1980-12-01), Tu et al.

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