GB820662A - Improvements relating to the production of polyhydric alcohols - Google Patents

Improvements relating to the production of polyhydric alcohols

Info

Publication number
GB820662A
GB820662A GB8833/57A GB883357A GB820662A GB 820662 A GB820662 A GB 820662A GB 8833/57 A GB8833/57 A GB 8833/57A GB 883357 A GB883357 A GB 883357A GB 820662 A GB820662 A GB 820662A
Authority
GB
United Kingdom
Prior art keywords
hydrogenation
chromic oxide
temperature
copper
hydrogenated
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
GB8833/57A
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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Publication of GB820662A publication Critical patent/GB820662A/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
    • 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
    • C07C29/17—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
    • C07C29/19—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds in six-membered aromatic rings
    • 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
    • C07C31/20—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

Glycerol is among the products when a mixture of hexitols and pentitols, obtained by the hydrogenation of aqueous solutions of wood sugar, is subjected to catalytic hydrogenation in two stages, the first being carried out at a temperature up to 210 DEG C. and the second at a temperature of 250-300 DEG C. Suitable hydrogenation catalysts are Raney nickel and mixed catalysts containing chromic oxide, such as a silver-copper-chromic oxide catalyst.ALSO:Polyhydric alcohols with less than 5 carbon atoms in the chain are produced by subjecting a mixture of hexitols and pentitols, obtained by the hydrogenation of aqueous solutions of wood sugar, to catalytic hydrogenation in two stages, the first being carried out at a temperature up to 210 DEG C. and the second at a temperature of 250 DEG to 300 DEG C. Suitable hydrogenation catalysts are, for example, Raney nickel and mixed catalysts containing chromic oxide such as a silver-copper-chromic oxide catalyst. The preferred pressure for carrying out the hydrogenation is 100-200 atm. In the examples: wood sugar liquors are hydrogenated in the presence of Raney nickel at 60 DEG C. and 55 atm. and the resulting solution is hydrogenated at 206 DEG C. in the presence of (a) copper chromite and (b) a silver-copper-chromic oxide catalyst and the resulting mixture is distilled; the residue is then hydrogenated at 260 DEG C. and the resulting mixture distilled; from the two distillates there are obtained glycerol, propylene glycol and ethylene glycol.
GB8833/57A 1956-04-12 1957-03-18 Improvements relating to the production of polyhydric alcohols Expired GB820662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH820662X 1956-04-12

Publications (1)

Publication Number Publication Date
GB820662A true GB820662A (en) 1959-09-23

Family

ID=4539407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8833/57A Expired GB820662A (en) 1956-04-12 1957-03-18 Improvements relating to the production of polyhydric alcohols

Country Status (1)

Country Link
GB (1) GB820662A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704917A (en) * 2019-01-28 2019-05-03 华东师范大学 A kind of chemical method maize transformation core furfural dregs are the technique of bio-ethanol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704917A (en) * 2019-01-28 2019-05-03 华东师范大学 A kind of chemical method maize transformation core furfural dregs are the technique of bio-ethanol
CN109704917B (en) * 2019-01-28 2023-09-15 华东师范大学 Process for chemically converting corncob furfural residues into bioethanol

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