GB1365643A - Process for the production of hydroquinone - Google Patents
Process for the production of hydroquinoneInfo
- Publication number
- GB1365643A GB1365643A GB833272A GB833272A GB1365643A GB 1365643 A GB1365643 A GB 1365643A GB 833272 A GB833272 A GB 833272A GB 833272 A GB833272 A GB 833272A GB 1365643 A GB1365643 A GB 1365643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- recycle stream
- hydroquinone
- quinone
- benzene
- anode
- 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
-
- 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
- C25B3/23—Oxidation
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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1365643 Hydroquinone UNION RHEINISCHE BRAUNKOHLEN KRAFTSTOFF AG 23 Feb 1972 [24 Feb 1971] 8332/72 Heading C2C A process for the production of hydroquinone by the electrochemical oxidation of benzene to quinone and the electrochemical reduction of quinone to hydroquinone comprises passing a finely dispersed recycle stream of benzene, dilute sulphuric acid and quinone, the quinone content of which is no higher than 2% related to the benzene through the anode compartment of an electrolysis cell at a speed sufficient to produce turbulence and passing a finely dispersed recycle stream of benzene dilute sulphuric acid and hydroquinone, substantially free of quinone through the cathode compartment at a speed sufficient to produce turbulence, adding fresh benzene to the anode recycle stream before it is introduced into the anode compartment, removing a corresponding proportion of the anode recycle stream after the anode compartment, separating the sulphuric acid from this component stream and returning it to the anode recycle stream, adding the residual benzenequinone mixture containing no more than about 2% of quinone to the cathode recycle stream before it is introduced into the cathode compartment, removing a corresponding proportion of the cathode recycle stream after the cathode compartment, separating the benzene from this component stream and returning it to the anode recycle stream, separating the hydroquinone from the residual hydroquinone sulphuric acid mixture and returning the sulphuric acid to the cathode recycle stream before it is introduced into the cathode compartment. The process is described with reference to a flow chart (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2108623A DE2108623C3 (en) | 1971-02-24 | 1971-02-24 | Process for the production of hydroquinone by electrochemical conversion of benzene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1365643A true GB1365643A (en) | 1974-09-04 |
Family
ID=5799606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB833272A Expired GB1365643A (en) | 1971-02-24 | 1972-02-23 | Process for the production of hydroquinone |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3721615A (en) |
| JP (1) | JPS5644153B1 (en) |
| AT (1) | AT314502B (en) |
| BE (1) | BE778521A (en) |
| CA (1) | CA943902A (en) |
| CH (1) | CH573376A5 (en) |
| DE (1) | DE2108623C3 (en) |
| FR (1) | FR2126195B1 (en) |
| GB (1) | GB1365643A (en) |
| IT (1) | IT948679B (en) |
| NL (1) | NL7201196A (en) |
| NO (1) | NO136836C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3884776A (en) * | 1973-05-15 | 1975-05-20 | Du Pont | Preparation of hydroquinone |
| DE2329153C2 (en) * | 1973-06-07 | 1975-02-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Running wave tube with a helical delay line and method of manufacturing the running wave tube |
| US3909376A (en) * | 1974-12-04 | 1975-09-30 | Basf Ag | Electrolytic manufacture of alkyl-substituted hydroquinones |
| US4071429A (en) * | 1976-12-29 | 1978-01-31 | Monsanto Company | Electrolytic flow-cell apparatus and process for effecting sequential electrochemical reaction |
| US4464236A (en) * | 1982-05-10 | 1984-08-07 | The Dow Chemical Company | Selective electrochemical oxidation of organic compounds |
| JPS5973983A (en) * | 1982-10-21 | 1984-04-26 | Mitsubishi Electric Corp | Printer apparatus |
| US4689124A (en) * | 1985-09-13 | 1987-08-25 | The Dow Chemical Company | Flow-through electrolytic cell |
| IT1233936B (en) * | 1988-03-24 | 1992-04-22 | Mini Ricerca Scient Tecnolog | ELECTROCHEMISTRY SYNTHESIS OF 2 ARYL HYDROKINONES. |
-
1971
- 1971-02-24 DE DE2108623A patent/DE2108623C3/en not_active Expired
- 1971-12-28 NO NO4894/71A patent/NO136836C/en unknown
-
1972
- 1972-01-26 BE BE778521A patent/BE778521A/en unknown
- 1972-01-28 NL NL7201196A patent/NL7201196A/xx not_active Application Discontinuation
- 1972-01-31 FR FR7203200A patent/FR2126195B1/fr not_active Expired
- 1972-02-11 CA CA134,504A patent/CA943902A/en not_active Expired
- 1972-02-14 US US00226124A patent/US3721615A/en not_active Expired - Lifetime
- 1972-02-22 AT AT142172A patent/AT314502B/en not_active IP Right Cessation
- 1972-02-22 IT IT48472/72A patent/IT948679B/en active
- 1972-02-23 JP JP1816072A patent/JPS5644153B1/ja active Pending
- 1972-02-23 GB GB833272A patent/GB1365643A/en not_active Expired
- 1972-02-24 CH CH264572A patent/CH573376A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2126195A1 (en) | 1972-10-06 |
| DE2108623B2 (en) | 1978-11-16 |
| JPS5644153B1 (en) | 1981-10-17 |
| FR2126195B1 (en) | 1975-10-24 |
| NL7201196A (en) | 1972-08-28 |
| CA943902A (en) | 1974-03-19 |
| CH573376A5 (en) | 1976-03-15 |
| BE778521A (en) | 1972-05-16 |
| DE2108623A1 (en) | 1972-08-31 |
| DE2108623C3 (en) | 1979-07-19 |
| US3721615A (en) | 1973-03-20 |
| AT314502B (en) | 1974-04-10 |
| IT948679B (en) | 1973-06-11 |
| NO136836B (en) | 1977-08-08 |
| NO136836C (en) | 1977-11-16 |
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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 |