SE7602406L - PROCEDURE FOR THE PREPARATION OF PURE GRAPE ACID AND OF MESOVIC ACID - Google Patents

PROCEDURE FOR THE PREPARATION OF PURE GRAPE ACID AND OF MESOVIC ACID

Info

Publication number
SE7602406L
SE7602406L SE7602406A SE7602406A SE7602406L SE 7602406 L SE7602406 L SE 7602406L SE 7602406 A SE7602406 A SE 7602406A SE 7602406 A SE7602406 A SE 7602406A SE 7602406 L SE7602406 L SE 7602406L
Authority
SE
Sweden
Prior art keywords
acid
free
hydrolysis
alkali
tungstic
Prior art date
Application number
SE7602406A
Other languages
Swedish (sv)
Other versions
SE426059B (en
Inventor
G Prescher
G Schreyer
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of SE7602406L publication Critical patent/SE7602406L/en
Publication of SE426059B publication Critical patent/SE426059B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B01J23/92—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D301/00—Preparation of oxiranes
    • C07D301/02—Synthesis of the oxirane ring
    • C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/12—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Epoxy Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The present invention provides a process for producing pure racemic acid and mesotartaric acid by reacting alkali maleates with aqueous hydrogen peroxide in the presence of alkali tungstate, in which the molar ratio of hydrogen peroxide to maleic acid is greater than 1, the alkali salts of the cis-epoxy succinic acid so obtained together with the alkali tungstate are converted into the free epoxy succinic acid and the free tungstate acid by passing them over a strongly acid cation exchanger and the free cis-epoxy succinic acid is hydrolysed to racemic acid and mesotartaric acid in the absence of free tungstic acid which is removed with an anion exchanger prior to hydrolysis in the case of a catalyst-free hydrolysis or in the presence of free tungstic acid which is removed by an anion exchanger after the hydrolysis in the case of a catalyst-containing hydrolysis, the racemic acid is crystallized from the tungstic-acid-free hydrolysis mixture. The mesotartaric acid remaining in the mother liquor is recovered therefrom either by crystallization or by evaporating to dryness and the anion exchanger changed with tungstic acid is regenerated with dilute alkali liquor.
SE7602406A 1975-02-26 1976-02-25 PROCEDURE FOR PREPARING PURE GRAPHIC ACID AND MESOVIC ACID SE426059B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2508228A DE2508228B2 (en) 1975-02-26 1975-02-26 Process for the production of pure grape acid and mesotartaric acid

Publications (2)

Publication Number Publication Date
SE7602406L true SE7602406L (en) 1976-08-27
SE426059B SE426059B (en) 1982-12-06

Family

ID=5939822

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7602406A SE426059B (en) 1975-02-26 1976-02-25 PROCEDURE FOR PREPARING PURE GRAPHIC ACID AND MESOVIC ACID

Country Status (6)

Country Link
AT (1) AT334330B (en)
BE (1) BE827604A (en)
CA (1) CA1058634A (en)
DE (1) DE2508228B2 (en)
SE (1) SE426059B (en)
ZA (1) ZA761030B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG176143A1 (en) * 2009-06-02 2011-12-29 Akzo Nobel Chemicals Int Bv Process for the preparation of a composition comprising meso-tartaric acid
CN101759554B (en) * 2009-12-31 2013-08-14 杭州临安金龙化工有限公司 Method for treating and utilizing potassium hydrogen tartrate mother liquor
CN115253364B (en) * 2022-08-10 2023-10-31 安徽海蓝生物科技有限公司 Centrifugal process and centrifugal equipment for tartaric acid solution
CN115286498A (en) * 2022-08-23 2022-11-04 佳化化学科技发展（上海）有限公司 Preparation method of meso-tartaric acid

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754325A (en) * 1952-05-27 1956-07-10 Shell Dev Oxidation with peroxides
DE1643891A1 (en) * 1967-10-05 1971-05-19 Degussa Process for the production of calcium tartrate
DE2140055C3 (en) * 1971-08-10 1980-10-02 Joh. A. Benckiser Gmbh, 6700 Ludwigshafen Process for the production of grape acid
JPS5136249B2 (en) * 1973-01-13 1976-10-07
DE2542536C3 (en) * 1975-09-24 1982-05-19 Degussa Ag, 6000 Frankfurt Setting retarder for technical gypsum plaster

Also Published As

Publication number Publication date
AT334330B (en) 1976-01-10
DE2508228C3 (en) 1987-01-22
ATA155775A (en) 1976-05-15
DE2508228A1 (en) 1976-09-09
ZA761030B (en) 1977-01-26
DE2508228B2 (en) 1979-12-13
SE426059B (en) 1982-12-06
BE827604A (en) 1975-10-06
CA1058634A (en) 1979-07-17

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