GB988040A - Improved method of hydrogenolysis of sugars - Google Patents
Improved method of hydrogenolysis of sugarsInfo
- Publication number
- GB988040A GB988040A GB28419/63D GB2841963D GB988040A GB 988040 A GB988040 A GB 988040A GB 28419/63 D GB28419/63 D GB 28419/63D GB 2841963 D GB2841963 D GB 2841963D GB 988040 A GB988040 A GB 988040A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sugars
- hydrogenation catalyst
- hydrogenolysis
- preferred
- cracking
- 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
- C07C31/205—1,3-Propanediol; 1,2-Propanediol
-
- 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
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by elimination of -OH groups, e.g. by dehydration
-
- 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
- C07C31/22—Trihydroxylic alcohols, e.g. glycerol
- C07C31/225—Glycerol
-
- 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)
Abstract
Reducible sugars are subjected to continuous hydrogenolysis to give a product containing a high percentage of glycerol by reacting an intimate mixture of the sugar and hydrogen continuously in the presence of a hydrogenation catalyst and a cracking additive at a temperature between 190 DEG C. and 230 DEG C. The reducible sugars may be hexoses, such as glucose or fructose; pentoses such as arabinose or xylose; or related carbohydrates such as, for example, starch hydrolysates, particularly those having a dextrose equivalent of at least 70. The feed solution is preferably used in aqueous solution. The preferred hydrogenation catalyst is a supported nickel catalyst promoted, for example, with iron or copper. The preferred cracking additives are the oxides, hydroxides and salts of the alkaline earth metals. The process is preferably carried out at a pressure of 1500-2000 p.s.i. Specification 721,260 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21118362A | 1962-07-20 | 1962-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB988040A true GB988040A (en) | 1965-03-31 |
Family
ID=22785875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28419/63D Expired GB988040A (en) | 1962-07-20 | 1963-07-18 | Improved method of hydrogenolysis of sugars |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB988040A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4400560A (en) * | 1980-03-14 | 1983-08-23 | Bayer Aktiengesellschaft | Process for the preparation of a mixture of low-molecular weight polyhoric alcohols |
-
1963
- 1963-07-18 GB GB28419/63D patent/GB988040A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4400560A (en) * | 1980-03-14 | 1983-08-23 | Bayer Aktiengesellschaft | Process for the preparation of a mixture of low-molecular weight polyhoric alcohols |
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