US 4,287,001 AGranted

Esterified aluminosilicate adsorbent as for resolution of sugar components

AssigneeUop LLC

InventorsSanti Kulprathipanja, Richard W. Neuzil

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Abstract

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 which the mixture is contacted with an adsorbent comprising a crystalline aluminosilicate bound with an inorganic oxide binder material 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 process comprises the esterification of the crystalline aluminosilicate and/or the binder material with an alcohol at esterification reaction conditions which substantially reduces the undesirable dissolution.

Claims10

Dependent claims

In a process for the separation of a component from a feed mixture comprising an aqueous solution of a mixture of components by contacting said solution with an adsorbent comprising a crystalline aluminosilicate exhibiting an adsorptive selectivity towards said component bound with an inorganic oxide binder material, thereby selectively adsorbing said component from said mixture, and thereafter recovering said adsorbed component, the silicon constituent of said crystalline aluminosilicate or said binder material tending to dissolve in said solution resulting in the undesirable disintegration of said crystalline aluminosilicate or said binder material, the improvement which comprises contacting said adsorbent, prior to said contacting with said aqueous solution, with an alcohol at esterification reaction conditions, thereby effecting an esterification reaction between said crystalline aluminosilicate or said binder material and said alcohol which substantially reduces the extent of dissolution of said silicon constituent and the extent of said disintegration of said crystalline aluminosilicate or said binder material.

Dependencies are inferred from the claim text.