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

1980-08-11

1982-02-23

Cintins, Ivars C.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455Z, B01J 2018, B01J 2022

Patent

active

043168191

ABSTRACT:
An improvement to an adsorbent comprising a crystalline aluminosilicate used 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. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The adsorbent has incorporated in it 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 crystalline aluminosilicate, powders of the organic polymer binder, and a liquid organic solvent, forming the mixture into discrete formations, preferably by extruding the mixture into an extrudate, and drying the formations. The improvement comprises spheronizing those formations prior to drying them.

REFERENCES:
patent: 3615187 (1971-10-01), Suzukawa et al.
patent: 4140773 (1979-02-01), Stowell et al.
patent: 4230593 (1980-10-01), Wagner et al.
patent: 4248737 (1981-02-01), Kulprathipanja
Woodruff, C. W. et al., "Effect of Processing Variables on Particles Obtained by Extrusion-Spheronization Processing", Journal of Pharmaceutical Sciences, vol. 61, No. 5, May 1972, pp. 787-790.

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