US4482761A
Expired / Lapsed
US
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Bulk separation of inositol and sorbitol by selective adsorption on zeolitic molecular sieves
Assignee: Katalistiks International Inc
•
Filing: 1983-01-12
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Granted: 1984-11-13
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Expires: 2003-01-12
Abstract
Abstract A process for the bulk separation of inositol and/or sorbitol is disclosed which comprises the selective adsorption of same on certain types of zeolitic molecular sieves. The process is especially useful for separating inositol from aqueous solutions containing same, using type X and type Y zeolite adsorbents whose cations are Na, Ca or Ba.
Inventors
- 👤 Chien C. Chao
- 👤 John D. Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:34
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07B; C07B2200/00; C07B2200/07; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
A process for the separation of inositol from a solution of a carbohydrate mixture containing inositol and at least one other carbohydrate which comprises contacting said mixture at a pressure sufficient to maintain the system in the liquid phase with an adsorbent composition comprising at least one crystalline aluminosilicate zeolite selected from the group consisting of zeolite type X and zeolite type Y in which the zeolite cations in association with at least about 50% of the AlO 4 tetrahedra of said aluminosilicate are selected from the group consisting of sodium and barium whereby inositol is selectively adsorbed thereon, removing the non-adsorbed portion of said mixture from contact with the zeolite adsorbent and desorbing inositol therefrom by contacting said adsorbent with a desorbing agent and recovering the desorbed inositol.
Claim 2
Dependent Claim
129 words
A process for the separation of inositol from a solution of a carbohydrate mixture containing inositol and at least one other carbohydrate which comprises contacting said mixture at a pressure sufficient to maintain the system in the liquid phase with an adsorbent composition comprising at least one crystalline aluminosilicate zeolite selected from the group consisting of zeolite type X and zeolite type Y in which the zeolite cations in association with at least about 50% of the AlO 4 tetrahedra of said aluminosilicate are selected from the group consisting of sodium and barium whereby inositol is selectively adsorbed thereon, removing the non-adsorbed portion of said mixture from contact with the zeolite adsorbent and desorbing inositol therefrom by contacting said adsorbent with a desorbing agent and recovering the desorbed inositol.
Claim 3
Dependent Claim
19 words
A process in accordance with claim 1 wherein the temperature is from about 0° C. to about 150° C.
Claim 4
Dependent Claim
67 words
A process in accordance with claim 1 wherein the temperature is from about 15° C. to about 100° C. and the crystalline aluminosilicate zeolite is selected from the group consisting of zeolite type X and zeolite type Y in which the zeolitic cations in association with at least 70% of the AlO 4 tetrahedra of said aluminosilicate are selected from the group consisting of sodium and barium.
Claim 5
Dependent Claim
23 words
A process in accordance with claim 1 wherein the desorbent is selected from the group consisting of alcohols, ketones, water and mixtures thereof.
Claim 6
Dependent Claim
12 words
A process in accordance with claim 1 wherein the desorbent is water.
Claim 7
Dependent Claim
22 words
A process in accordance with claim 1 wherein said carbohydrate mixture comprises at least one sugar and at least one sugar alcohol.
Claim 8
Dependent Claim
17 words
A process in accordance with claim 1 wherein said carbohydrate mixture comprises a mixture of sugar alcohols.
Claim 9
Dependent Claim
24 words
Process according to claim 2 wherein the crystalline aluminosilicate zeolite is a type X zeolite in which the cations are predominantly sodium or barium.
Claim 10
Dependent Claim
22 words
Process according to claim 2 wherein the crystalline aluminosilicate zeolite is a type Y zeolite in which the cations are predominately barium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |