GB1446179A - Electrolytic preparation of glyoxylic acid - Google Patents
Electrolytic preparation of glyoxylic acidInfo
- Publication number
- GB1446179A GB1446179A GB5571973A GB5571973A GB1446179A GB 1446179 A GB1446179 A GB 1446179A GB 5571973 A GB5571973 A GB 5571973A GB 5571973 A GB5571973 A GB 5571973A GB 1446179 A GB1446179 A GB 1446179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- diaphragm
- catholyte
- atoms
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1446179 Preparing glyoxylic acid electrolytically RHONE-POULENC SA 30 Nov 1973 [1 Dec 1972] 55719/73 Addition to 1364939 Heading C7B [Also in Division C2] Glyoxylic acid is prepared by reduction of oxalic acid in a diaphragm cell in which a catholyte comprises an aqueous solution of oxalic acid and 0.00005 to 1% of an adjurant chosen from: (a) tertiary amines having less than 40 C atoms, (b) ditertiary diamines having between 6 and 40 C atoms. (c) quaternary ammonium salts either of Formula NR 4 <SP>+</SP>. <SP>1</SP>/ y A<SP>y-</SP> or NR 4 <SP>+-</SP>R<SP>-</SP>NR 3 . <SP>2</SP>/ y A<SP>y-</SP>having between 15 and 40 or between 8 and 40 C atoms respectively all containing (aryl) aliphatic radicals (y being 1, 2 or 3, and A being hydroxy or anion of inorganic or organic acid.) Many examples are specified, e.g. tribenzylamine, (dimethylamino) -ethyl ether dimethyl or diethyl-benzyl-dodecyl- (or tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl) ammonium hydroxides and salts. The cathode may be of Cd, Pb, Hg or amalgam or alloy thereof e.g. with Ag, Sb or Sn; the anode may be of Pt, platinized Ti, graphite, Pb or its alloy e.g. with Ag, Sb or Sn. The diaphragm is preferably a cation exchange membrane reinforced with a screen. The anolyte may be an aqueous solution of sulphuric or phosphoric acid. Woven fabric or grid spacers may be located between the electrodes and diaphragm in a filter press type cell. Catholyte and anolyte may be circulated, oxalic acid being added and catholyte withdrawn continuously. Reference has been directed by the Comptroller Specification 1364761
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7242836A FR2208876B2 (en) | 1972-12-01 | 1972-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1446179A true GB1446179A (en) | 1976-08-18 |
Family
ID=9108075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5571973A Expired GB1446179A (en) | 1972-12-01 | 1973-11-30 | Electrolytic preparation of glyoxylic acid |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3929613A (en) |
| JP (1) | JPS5046624A (en) |
| AT (1) | AT331774B (en) |
| BE (1) | BE808087A (en) |
| BR (1) | BR7309344D0 (en) |
| CA (1) | CA1022496A (en) |
| CH (1) | CH590815A5 (en) |
| DD (1) | DD108265A5 (en) |
| FR (1) | FR2208876B2 (en) |
| GB (1) | GB1446179A (en) |
| IT (1) | IT1002168B (en) |
| NL (1) | NL7316069A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381229A (en) * | 1980-10-27 | 1983-04-26 | Standard Oil Company (Indiana) | Process for electrochemical reduction of terephthalic acid |
| US4402805A (en) * | 1982-03-15 | 1983-09-06 | Standard Oil Company Indiana | Electrochemical process to prepare p-hydroxymethylbenzoic acid with a low level of 4-CBA |
| US4560450A (en) * | 1985-04-18 | 1985-12-24 | Texaco, Inc. | Means and method for reducing oxalic acid to a product |
| FR2587039B1 (en) * | 1985-09-10 | 1990-06-08 | Hoechst France | PROCESS FOR THE MANUFACTURE OF GLYOXYL OXIDE BY ELECTROCHEMICAL REDUCTION OF OXALIC ACID |
| DE4217338C2 (en) * | 1992-05-26 | 1994-09-01 | Hoechst Ag | Electrochemical process for the reduction of oxalic acid to glyoxylic acid |
| CN100363538C (en) * | 2005-08-05 | 2008-01-23 | 山东建筑工程学院材料科学研究所 | Treating process for electrode activation in preparing glyoxalic acid by electrolytically reducing oxalic acid |
| EP2751308B1 (en) * | 2011-09-01 | 2017-03-22 | Johannes Gutenberg-Universität Mainz | Process for cathodic deoxygenation of amides and esters |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US815548A (en) * | 1904-11-02 | 1906-03-20 | Charles Mettler | Process of producing aromatic alcohols and their derivatives. |
| DE1263768B (en) * | 1965-07-09 | 1968-03-21 | Basf Ag | Device for carrying out electrochemical reactions of organic compounds with flowing electrolytes |
| FR2114195A5 (en) * | 1970-11-19 | 1972-06-30 | Rhone Poulenc Sa | |
| BE787771A (en) * | 1971-08-20 | 1973-02-19 | Rhone Poulenc Sa | PREPARATION OF GLYOXYLIC ACID |
| JPS6031960B2 (en) * | 1976-08-10 | 1985-07-25 | 株式会社新菱製作所 | Drain collection method and device |
-
1972
- 1972-12-01 FR FR7242836A patent/FR2208876B2/fr not_active Expired
-
1973
- 1973-11-23 NL NL7316069A patent/NL7316069A/xx not_active Application Discontinuation
- 1973-11-28 BR BR9344/73A patent/BR7309344D0/en unknown
- 1973-11-29 JP JP48134014A patent/JPS5046624A/ja active Pending
- 1973-11-30 GB GB5571973A patent/GB1446179A/en not_active Expired
- 1973-11-30 BE BE138410A patent/BE808087A/en unknown
- 1973-11-30 IT IT31994/73A patent/IT1002168B/en active
- 1973-11-30 AT AT1005273A patent/AT331774B/en active
- 1973-11-30 US US420576A patent/US3929613A/en not_active Expired - Lifetime
- 1973-11-30 CH CH1687173A patent/CH590815A5/xx not_active IP Right Cessation
- 1973-11-30 CA CA187,122A patent/CA1022496A/en not_active Expired
- 1973-12-03 DD DD175054A patent/DD108265A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7309344D0 (en) | 1974-08-29 |
| IT1002168B (en) | 1976-05-20 |
| BE808087A (en) | 1974-05-30 |
| US3929613A (en) | 1975-12-30 |
| CA1022496A (en) | 1977-12-13 |
| JPS5046624A (en) | 1975-04-25 |
| FR2208876B2 (en) | 1976-06-04 |
| DD108265A5 (en) | 1974-09-12 |
| FR2208876A2 (en) | 1974-06-28 |
| AT331774B (en) | 1976-08-25 |
| DE2359863A1 (en) | 1974-06-27 |
| CH590815A5 (en) | 1977-08-31 |
| DE2359863B2 (en) | 1976-07-15 |
| NL7316069A (en) | 1974-06-05 |
| ATA1005273A (en) | 1975-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] |