ES2020475A6 - Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid - Google Patents

Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid

Info

Publication number
ES2020475A6
ES2020475A6 ES9001621A ES9001621A ES2020475A6 ES 2020475 A6 ES2020475 A6 ES 2020475A6 ES 9001621 A ES9001621 A ES 9001621A ES 9001621 A ES9001621 A ES 9001621A ES 2020475 A6 ES2020475 A6 ES 2020475A6
Authority
ES
Spain
Prior art keywords
acid
cathodic
electroreduction
reactivation
oxalic acid
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 - Lifetime
Application number
ES9001621A
Other languages
Spanish (es)
Inventor
Gomez Jose Ramon Ochoa
Diego Zori Asuncion De
Frutos Jose Maria Garrido
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.)
Ercros SA
Original Assignee
Ercros 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 Ercros SA filed Critical Ercros SA
Priority to ES9001621A priority Critical patent/ES2020475A6/en
Priority to AU79652/91A priority patent/AU7965291A/en
Priority to PCT/ES1991/000035 priority patent/WO1991019832A1/en
Publication of ES2020475A6 publication Critical patent/ES2020475A6/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B3/00—Electrolytic production of organic compounds
    • C25B3/20—Processes
    • C25B3/25—Reduction

Abstract

Method for producing glyoxylic acid by electroreduction, with cathodic reactivation, of oxalic acid in a divided eletrolytic cell comprised of an anodic compartment formed of an anode and an aqueous solution of a strong mineral acid as anolite and of a cathodic compartment formed of a lead cathod and an aqueous solution saturated with oxalic acid, the two compartments being separated by a cationic exchange membrane. The method comprises the addition of Pb(II) salts to the catholite or to the anolite in order to keep at high and constant levels throughout the operation both the current efficiency and the selectivity of the process. The effect of Pb (II) salts may be potentiated by washing the cathode with nitric acid. The glyoxylic acid is an intermediary in the industrial synthesis of p-hydroxyphenylglycine and vanillin, inter alia.
ES9001621A 1990-06-12 1990-06-12 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid Expired - Lifetime ES2020475A6 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES9001621A ES2020475A6 (en) 1990-06-12 1990-06-12 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid
AU79652/91A AU7965291A (en) 1990-06-12 1991-06-11 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid
PCT/ES1991/000035 WO1991019832A1 (en) 1990-06-12 1991-06-11 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9001621A ES2020475A6 (en) 1990-06-12 1990-06-12 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid

Publications (1)

Publication Number Publication Date
ES2020475A6 true ES2020475A6 (en) 1991-08-01

Family

ID=8267720

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9001621A Expired - Lifetime ES2020475A6 (en) 1990-06-12 1990-06-12 Method for producing glyoxylic acid by electroreduction with cathodic reactivation of oxalic acid

Country Status (3)

Country Link
AU (1) AU7965291A (en)
ES (1) ES2020475A6 (en)
WO (1) WO1991019832A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627020B1 (en) * 1992-02-22 1996-05-22 Hoechst Aktiengesellschaft Electrochemical process for preparing glyoxylic acid
DE4217338C2 (en) * 1992-05-26 1994-09-01 Hoechst Ag Electrochemical process for the reduction of oxalic acid to glyoxylic acid

Also Published As

Publication number Publication date
WO1991019832A1 (en) 1991-12-26
AU7965291A (en) 1992-01-07

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