GB1364761A - Process for the eletrolytic preparation of glyoxylic acid - Google Patents
Process for the eletrolytic preparation of glyoxylic acidInfo
- Publication number
- GB1364761A GB1364761A GB3872472A GB3872472A GB1364761A GB 1364761 A GB1364761 A GB 1364761A GB 3872472 A GB3872472 A GB 3872472A GB 3872472 A GB3872472 A GB 3872472A GB 1364761 A GB1364761 A GB 1364761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- cathode
- catholyte
- oxalic acid
- glyoxylic 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)
Abstract
1364761 Glyoxylic acid RHONE-POULENC SA 18 Aug 1972 [20 Aug 1971] 38724/72 Heading C2C [Also in Division C7] Glyoxylic acid is prepared by cathodic reduction of oxalic acid in an electrolysis cell having cathode and anode compartments separated by a cation exchange membrane diaphragm, e.g. reinforced with a screen, using a solid metallic cathode with a hydrogen overvoltage greater than the potential for reducing oxalic acid to glyoxylic acid, and a catholyte comprising an aqueous solution of oxalic acid free of inorganic acid at 0 to 70 C. and which moves in a closed path by being passed through the cathode compartment over the cathode surface. At least the surface of the cathode may consist of Cd, Pb, solid amalgam of Pb, or an alloy of Pb with Ag, Sb, Sn or Bi. The anode may consist of Pt, platinized Ti, graphite, Pb or its alloy, e.g. with Ag, Sb or Sn. The anolyte may be an aqueous solution of sulphuric or phosphoric acid. Oxalic acid may be added continuously to the catholyte which is withdrawn continuously to extract the glyoxylic acid. Thus cooling the withdrawn catholyte below 8 C. precipitates oxalic acid. The anolyte may circulate in a manner similar to that of the catholyte so that the pressure either side of the diaphragm is the same. At least one of the compartments may contain a woven fabric or grid spacer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7130395A FR2151150A5 (en) | 1971-08-20 | 1971-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1364761A true GB1364761A (en) | 1974-08-29 |
Family
ID=9082084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3872472A Expired GB1364761A (en) | 1971-08-20 | 1972-08-18 | Process for the eletrolytic preparation of glyoxylic acid |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3779876A (en) |
| JP (1) | JPS4829720A (en) |
| AT (1) | AT326624B (en) |
| BE (1) | BE787770A (en) |
| BR (1) | BR7205614D0 (en) |
| CA (1) | CA974477A (en) |
| CH (1) | CH541535A (en) |
| DD (1) | DD98281A5 (en) |
| DE (1) | DE2240731C3 (en) |
| FR (1) | FR2151150A5 (en) |
| GB (1) | GB1364761A (en) |
| IT (1) | IT964101B (en) |
| NL (1) | NL7211021A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560450A (en) * | 1985-04-18 | 1985-12-24 | Texaco, Inc. | Means and method for reducing oxalic acid to a product |
| US4619743A (en) * | 1985-07-16 | 1986-10-28 | Texaco Inc. | Electrolytic 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 |
| JPH0791053B2 (en) * | 1988-02-16 | 1995-10-04 | 旭硝子株式会社 | Method for producing sodium hydrogen carbonate |
| CA2130552A1 (en) * | 1992-02-22 | 1993-08-23 | Steffen Dapperheld | Electrochemical process for preparing glyoxylic acid |
| DE4205423C1 (en) * | 1992-02-22 | 1993-09-30 | Hoechst Ag | Electrochemical process for the production of glyoxylic acid |
| DE4217338C2 (en) * | 1992-05-26 | 1994-09-01 | Hoechst Ag | Electrochemical process for the reduction of oxalic acid to glyoxylic acid |
| FR2926815A1 (en) * | 2008-01-25 | 2009-07-31 | Clariant Specialty Fine Chem | PROCESS FOR SEPARATING GLYOXYLIC ACID FROM AN AQUEOUS REACTIONAL MEDIUM CONTAINING GLYOXYLIC ACID AND HYDROCHLORIC ACID |
| FR2926814B1 (en) * | 2008-01-25 | 2012-08-03 | Clariant Specialty Fine Chem F | PROCESS FOR THE PREPARATION OF AQUEOUS GLYOXYLIC ACID SOLUTION |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE194038C (en) * | 1903-12-05 | |||
| US798920A (en) * | 1904-01-29 | 1905-09-05 | Emil Von Portheim | Method of reducing oxalic acid and its derivatives by electrolysis. |
| US1013502A (en) * | 1911-03-01 | 1912-01-02 | Roessler & Hasslacher Chemical | Process for the manufacture of glycolic acid. |
| BE757106A (en) * | 1969-10-06 | 1971-04-06 | Basf Ag | PROCESS FOR PREPARING GLYOXYL ACID FROM OXALIC ACID |
| JPS589966A (en) | 1981-07-07 | 1983-01-20 | Sumitomo Metal Ind Ltd | Production of one side zinc plated steel plate |
-
0
- BE BE787770D patent/BE787770A/en unknown
-
1971
- 1971-08-20 FR FR7130395A patent/FR2151150A5/fr not_active Expired
-
1972
- 1972-08-11 NL NL7211021A patent/NL7211021A/xx unknown
- 1972-08-17 JP JP47081858A patent/JPS4829720A/ja active Pending
- 1972-08-17 BR BR005614/72A patent/BR7205614D0/en unknown
- 1972-08-18 CA CA149,775A patent/CA974477A/en not_active Expired
- 1972-08-18 GB GB3872472A patent/GB1364761A/en not_active Expired
- 1972-08-18 DE DE2240731A patent/DE2240731C3/en not_active Expired
- 1972-08-18 CH CH1226672A patent/CH541535A/en not_active IP Right Cessation
- 1972-08-18 AT AT716372A patent/AT326624B/en not_active IP Right Cessation
- 1972-08-18 DD DD165131A patent/DD98281A5/xx unknown
- 1972-08-18 US US00281742A patent/US3779876A/en not_active Expired - Lifetime
- 1972-08-19 IT IT28322/72A patent/IT964101B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| US3779876A (en) | 1973-12-18 |
| BR7205614D0 (en) | 1973-08-23 |
| BE787770A (en) | 1973-02-19 |
| DD98281A5 (en) | 1973-06-12 |
| CH541535A (en) | 1973-09-15 |
| CA974477A (en) | 1975-09-16 |
| FR2151150A5 (en) | 1973-04-13 |
| DE2240731A1 (en) | 1973-03-01 |
| DE2240731C3 (en) | 1981-04-02 |
| IT964101B (en) | 1974-01-21 |
| DE2240731B2 (en) | 1974-04-04 |
| ATA716372A (en) | 1975-03-15 |
| JPS4829720A (en) | 1973-04-19 |
| NL7211021A (en) | 1973-02-22 |
| AT326624B (en) | 1975-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |