GB506213A - Improved manufacture of potassium persulphate - Google Patents
Improved manufacture of potassium persulphateInfo
- Publication number
- GB506213A GB506213A GB8632/38A GB863238A GB506213A GB 506213 A GB506213 A GB 506213A GB 8632/38 A GB8632/38 A GB 8632/38A GB 863238 A GB863238 A GB 863238A GB 506213 A GB506213 A GB 506213A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potassium
- sulphuric acid
- gms
- compressed air
- electrolyte
- 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
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/28—Per-compounds
- C25B1/29—Persulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
506,213. Electrolytic production of persulphates. LAPORTE, Ltd., B. March 21, 1938, No. 8632. Convention date, March 31, 1937. [Class 41] Potassium persulphate is made by electrolysis of an aqueous solution, the composition of which substantially corresponds with that of a saturated solution of potassium sulphate and sulphuric acid in the proportion of three molecules of potassium sulphate and five molecules of sulphuric acid. An electrolyte specified contains 245 gms. sulphuric acid, 261 gms. potassium sulphate, and 730 gms. water, and may be made by starting with substances other than potassium sulphate, e.g. potassium bisulphate, and sulphuric acid, provided the composition is as stated. The persulphate formed.is nearly insoluble in such an electrolyte and may be kept in suspension by an upward flow of electrolyte or by the introduction of compressed air or both. The inflow of compressed air reduces the temperature which should be maintained at about 20-22‹ C. for an anodic current density of 0À5 amps per sq. cm. An arrangement which may be used in the process of the invention comprises a stoneware cell 12, which is shaped internally to form a support 22 for a cathode composed of four thick graphite plates 23, 24, 25 and 26 fastened together to form a rectangle and a graphite current supply rod 27. The anode consists of iridium-platinum wires 28 held vertically in an iron frame composed of longitudinal members 29 and 30 and vertical members 31 and 32 encased in ebonite 33, and having a current supply lead 34. Pipes 35 and 37 having perforations 36 and 38 through which fresh liquor and compressed air respectively are introduced, extend along. the lower part of the cell, and the suspension of potassium persulphate obtained is drawn off through the outflow pipe 13, cooled, filtered, resaturated, and returned to the cell.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR506213X | 1937-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506213A true GB506213A (en) | 1939-05-24 |
Family
ID=8908973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8632/38A Expired GB506213A (en) | 1937-03-31 | 1938-03-21 | Improved manufacture of potassium persulphate |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE427292A (en) |
| GB (1) | GB506213A (en) |
-
0
- BE BE427292D patent/BE427292A/xx unknown
-
1938
- 1938-03-21 GB GB8632/38A patent/GB506213A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE427292A (en) |
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