GB801732A - Improvements in or relating to a process for producing polyalcohols by hydrogenationof corresponding sugars - Google Patents

Improvements in or relating to a process for producing polyalcohols by hydrogenationof corresponding sugars

Info

Publication number
GB801732A
GB801732A GB23260/56A GB2326056A GB801732A GB 801732 A GB801732 A GB 801732A GB 23260/56 A GB23260/56 A GB 23260/56A GB 2326056 A GB2326056 A GB 2326056A GB 801732 A GB801732 A GB 801732A
Authority
GB
United Kingdom
Prior art keywords
hydrogenated
mannitol
sorbitol
polyalcohols
mixture
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
GB23260/56A
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.)
Usines de Melle SA
Original Assignee
Usines de Melle SA
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 Usines de Melle SA filed Critical Usines de Melle SA
Publication of GB801732A publication Critical patent/GB801732A/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
    • C07C31/26—Hexahydroxylic alcohols
    • 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
    • C07C29/132—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
    • C07C29/136—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 of >C=O containing groups, e.g. —COOH
    • C07C29/14—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 of >C=O containing groups, e.g. —COOH of a —CHO group
    • C07C29/141—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 of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
    • 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
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • 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
    • 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
    • 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

Abstract

Polyalcohols are produced by hydrogenation of the corresponding sugars under pressure and in the presence of an aqueous solution of one or more aliphatic alcohols having from 1 to 3 carbon atoms, and a nickel catalyst, wherein the concentration of aliphatic alcohols in the aqueous solution is from 70 to 95 per cent by weight, preferably at least 80 per cent by weight. Preferred conditions are a pressure of at least 15 kg./cm.2, more particularly 15-25 kg./cm.2, and a temperature of 50-170 DEG C., more particularly 80-150 DEG C. The hydrogenation is preferably carried out batchwise in a closed vessel, the reacted mixture being allowed to settle, the clear solution withdrawn, and further starting material added for a further operation, or continuously by passing the heated sugar solution through a bed of nickel catalyst maintained under hydrogen pressure. The catalyst may be Raney nickel or nickel deposited on an inert carrier, e.g. kieselguhr. The polyalcohols can generally be crystallized from the reaction mixture merely by cooling. In examples: (1) glucose is hydrogenated to sorbitol, (2) invert sugar is hydrogenated to a mixture of sorbitol and mannitol, (3) laevulose is hydrogenated to mannitol, (4) xylose is hydrogenated to xylitol, and (5) a mixture containing laevulose and glucose is hydrogenated to mannitol and sorbitol.
GB23260/56A 1955-07-29 1956-07-27 Improvements in or relating to a process for producing polyalcohols by hydrogenationof corresponding sugars Expired GB801732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR801732X 1955-07-29

Publications (1)

Publication Number Publication Date
GB801732A true GB801732A (en) 1958-09-17

Family

ID=9244922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23260/56A Expired GB801732A (en) 1955-07-29 1956-07-27 Improvements in or relating to a process for producing polyalcohols by hydrogenationof corresponding sugars

Country Status (1)

Country Link
GB (1) GB801732A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141163A1 (en) * 1981-01-21 1982-08-26 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR CATALYTIC HYDROGENOLYSIS OF ALDITOLS FOR THE PRODUCTION OF GLYCERIN AND POLYOLS
DE3142514A1 (en) * 1981-01-21 1982-09-16 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. CATALYTIC METHOD FOR PRODUCING POLYOLS FROM ALDOSES
DE3141907A1 (en) * 1981-01-21 1982-10-14 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR CATALYTICALLY CONVERTING ALDOSES TO POLYOLS
EP0854148A1 (en) * 1997-01-17 1998-07-22 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Process for the hydrogenation of sugars
EP0854149B1 (en) * 1997-01-17 2002-05-02 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Process for the hydrogenation of sugars using a shell type catalyst

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141163A1 (en) * 1981-01-21 1982-08-26 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR CATALYTIC HYDROGENOLYSIS OF ALDITOLS FOR THE PRODUCTION OF GLYCERIN AND POLYOLS
DE3142514A1 (en) * 1981-01-21 1982-09-16 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. CATALYTIC METHOD FOR PRODUCING POLYOLS FROM ALDOSES
DE3141907A1 (en) * 1981-01-21 1982-10-14 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR CATALYTICALLY CONVERTING ALDOSES TO POLYOLS
EP0854148A1 (en) * 1997-01-17 1998-07-22 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Process for the hydrogenation of sugars
EP0854149B1 (en) * 1997-01-17 2002-05-02 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Process for the hydrogenation of sugars using a shell type catalyst

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