Technique to reduce the zeolite molecular sieve solubility in an aqueous system

Abstract

Abstract The invention comprises an improved adsorbent comprising a crystalline aluminosilicate and its method of manufacture useful in a 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 comprises the incorporation of a binder material in the absorbent 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 acetic acid solvent, extruding the mixture into an extrudate and drying the extrudate.

Inventors

• 👤 Santi Kulprathipanja

Bibliographic Details