GB842743A - A process for obtaining glycols from dilute sugar solution - Google Patents
A process for obtaining glycols from dilute sugar solutionInfo
- Publication number
- GB842743A GB842743A GB28545/57A GB2854557A GB842743A GB 842743 A GB842743 A GB 842743A GB 28545/57 A GB28545/57 A GB 28545/57A GB 2854557 A GB2854557 A GB 2854557A GB 842743 A GB842743 A GB 842743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- hexitol
- pentitol
- displace
- aqueous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/20—Dihydroxylic alcohols
- C07C31/202—Ethylene glycol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/20—Dihydroxylic alcohols
- C07C31/205—1,3-Propanediol; 1,2-Propanediol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/26—Hexahydroxylic alcohols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
In a process for obtaining glycols from a dilute wood solution obtained by the hydrolysis of wood by sulphuric acid, the solution is clarified, freed from acid and catalytically hydrogenated; the resulting hexitol-pentitol solution is concentrated by adsorption on an anion exchanger impregnated with boric acid or borax and the adsorbed hexitol-pentitol mixtures displaced from the anion exchanger by an aqueous neutral liquid the weight of which is less than the weight of the solvent in the adsorption solution; the concentrated hexitol:pentitol solution is subjected to catalytic hydrogenative cracking and the products in the solution are adsorbed individually or in common on anion exchangers impregnated with boric acid or borax from which they are displaced by means of aqueous neutral liquids, the weights of which are together less than the weight of the solvent in the solution obtained by cracking the hexitol-pentitol solution. Suitable aqueous neutral liquids are, for example, an aqueous solution of a salt such as sodium sulphate, which can be used for displacing hexitols, an aqueous hexitol solution, which can be used for displacing glycerin, and water, which can be used for displacing 1,3-propylene glycol. In the example, a wood sugar solution obtained by the Scholler process is treated as described above to produce a hexitol-pentitol solution which is adsorbed on an anion exchanger previously treated with borax; the hexitols and pentitols are displaced by treating the ion exchanger with sodium sulphate or ammonium sulphate solution; the concentrated hexitol-pentitol solution is catalytically hydrogenated and the resulting solution treated with various anion exchangers which are treated respectively with sodium sulphate solution to displace the sorbitol, aqueous hexitol solution, to displace glycerol, water to displace 1,2-propylene glycol, water to displace ethylene glycol and water to displace 1,3-propylene glycol. Specification 838,501 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH842743X | 1956-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB842743A true GB842743A (en) | 1960-07-27 |
Family
ID=4541447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28545/57A Expired GB842743A (en) | 1956-10-19 | 1957-09-10 | A process for obtaining glycols from dilute sugar solution |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB842743A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980719A (en) * | 1970-02-09 | 1976-09-14 | Sud-Chemie Ag | Process for obtaining xylitol from natural products containing xylan |
| US9073841B2 (en) | 2012-11-05 | 2015-07-07 | Segetis, Inc. | Process to prepare levulinic acid |
| US10618864B2 (en) | 2011-11-23 | 2020-04-14 | Gfbiochemicals Ip Assets B.V. | Process to prepare levulinic acid |
-
1957
- 1957-09-10 GB GB28545/57A patent/GB842743A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980719A (en) * | 1970-02-09 | 1976-09-14 | Sud-Chemie Ag | Process for obtaining xylitol from natural products containing xylan |
| US10618864B2 (en) | 2011-11-23 | 2020-04-14 | Gfbiochemicals Ip Assets B.V. | Process to prepare levulinic acid |
| US9073841B2 (en) | 2012-11-05 | 2015-07-07 | Segetis, Inc. | Process to prepare levulinic acid |
| US9598341B2 (en) | 2012-11-05 | 2017-03-21 | Gfbiochemicals Limited | Process to prepare levulinic acid |
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