GB988040A - Improved method of hydrogenolysis of sugars - Google Patents

Improved method of hydrogenolysis of sugars

Info

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
Application number
GB28419/63D
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zeneca Inc
Original Assignee
Atlas Chemical Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlas Chemical Industries Inc filed Critical Atlas Chemical Industries Inc
Publication of GB988040A publication Critical patent/GB988040A/en
Expired legal-status Critical Current

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.
GB28419/63D 1962-07-20 1963-07-18 Improved method of hydrogenolysis of sugars Expired GB988040A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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