GB1250991A - - Google Patents
Info
- Publication number
- GB1250991A GB1250991A GB1250991DA GB1250991A GB 1250991 A GB1250991 A GB 1250991A GB 1250991D A GB1250991D A GB 1250991DA GB 1250991 A GB1250991 A GB 1250991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tetraethylammonium
- tetramethylammonium
- electrolyte
- specified
- jan
- 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
- C25B3/29—Coupling reactions
- C25B3/295—Coupling reactions hydrodimerisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
1,250,991. Electrohydrodimerization process. BADISCHE ANILIN- & SODA-FABRIK A.G. 3 Jan., 1969 [5 Jan., 1968], No.551/69. Heading C2C. [Also in Division C7] Adiponitrile is produced by direct electrochemical hydrodimerization of acrylonitrile in an electrolytic cell without a diaphragm in the presence of an aqueous conducting solution containing a mixture of tetramethylammonium and tetraethylammonium cations in the ratio by weight (calculated as (CH 3 ) 4 N<SP>+</SP>: (C 2 H 5 ) 4 N<SP>+</SP> but including any tetramethylammonium and tetraethylammonium groups present in any undissociated compounds thereof) of from 1: 4 to 4:1 at a pH in the range from 7À0 to 9À5 and under relative movement between the electrolyte and electrodes (e.g. the electrolyte and/or electrodes may be vibrated). The pH may be kept within the specified range by the continuous addition of base. Thus, a tetraethyl ammonium salt (or tetramethylammonium salt) may be placed in the cell and the pH value be adjusted with tetramethyl ammonium hydroxide (or tetraethylammonium hydroxide). Current densities, voltages and temperatures may be 10-80 A/dm<SP>2</SP>, 5-12 volts and 20-40 C. The tetraethylammonium and tetramethylammonium salts may be derived from the following sulphonic acids: benzene-, toluene-, cumene-, ethylbenzene-, naphthalene-, methane- and ethane-sulphonic acids or may be derived from methyl- or ethyl-sulphuric acid or may be sulphates, phosphates, perchlorates, fluorides, tetrafluoborates or fluorosulphonates. Solvents which may be added to the electrolyte are acetonitrile, specified ethers, dimethyl formamide, dimethyl sulphoxide, dimethyl sulphone or specified alcohols.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681643732 DE1643732A1 (en) | 1968-01-05 | 1968-01-05 | Process for the electrochemical hydrodimerization of acrylonitrile |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1250991A true GB1250991A (en) | 1971-10-27 |
Family
ID=5684380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1250991D Expired GB1250991A (en) | 1968-01-05 | 1969-01-03 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE726519A (en) |
FR (1) | FR2000035A1 (en) |
GB (1) | GB1250991A (en) |
NL (1) | NL6900121A (en) |
-
1969
- 1969-01-03 GB GB1250991D patent/GB1250991A/en not_active Expired
- 1969-01-03 FR FR6900017A patent/FR2000035A1/fr not_active Withdrawn
- 1969-01-03 NL NL6900121A patent/NL6900121A/xx unknown
- 1969-01-06 BE BE726519D patent/BE726519A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
FR2000035A1 (en) | 1969-08-29 |
NL6900121A (en) | 1969-07-08 |
BE726519A (en) | 1969-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |