DE205068C - - Google Patents
Info
- Publication number
- DE205068C DE205068C DE1907205068D DE205068DD DE205068C DE 205068 C DE205068 C DE 205068C DE 1907205068 D DE1907205068 D DE 1907205068D DE 205068D D DE205068D D DE 205068DD DE 205068 C DE205068 C DE 205068C
- Authority
- DE
- Germany
- Prior art keywords
- salts
- cyan
- sodium
- cyanamide
- 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)
- Water Treatment By Electricity Or Magnetism (AREA)
- Paper (AREA)
Description
VEREINIGTE CHEMISCHE WERKE, AKT.-GES. in CHARLOTTENBURG.UNITED CHEMICAL WORKS, AKT.-GES. in CHARLOTTENBURG.
Zusatz zum Patente 205067 vom 14. April 1907.Addendum to patent 205067 of April 14, 1907.
Patentiert im Deutschen Reiche vom 11. Mai 1907 ab. Längste Dauer: 13. April 1922.Patented in the German Empire on May 11, 1907. Longest duration: April 13, 1922.
In dem Patent 205067 ist ein Verfahren zur Herstellung von Persulfaten durch Elektrolyse von Bisulfaten beschrieben worden, dessen Kennzeichen der Zusatz von Cyansalzen ist, und zwar können einfache oder zusammengesetzte Cyanide benutzt werden. Nach der Beschreibung werden Verbindungen benutzt, welche als eigentliche Verbindungen bzw. komplexe Cyansalze aufzufassen sind, z.B. Cyankalium, Kalium - Ferrocyanid usw. Es hat sich nunmehr gezeigt, daß auch Verbindungen, welche nicht die Cyangruppe in derartiger Bindung wie Cyansalze oder Doppelcyanide enthalten, zu dem gleichen Zwecke verwendet werden können. Es haben sich Rhodansalze, Cyanate sowie die Salze des Cyanamids als geeignet erwiesen. Es handelt sich bei diesen Verbindungen um Stoffe,-' bei denen der Stickstoff noch mit anderen EIementen verbunden ist. Die Anwendung der Verbindungen erfolgt in gleicher Weise wie bei dem Verfahren des Hauptpatents.In the patent 205067 there is a process for the production of persulfates by electrolysis of bisulfates have been described, the characteristic of which is the addition of cyan salts, and can either simple or compound cyanides can be used. According to the description there will be connections used, which are to be understood as actual compounds or complex cyan salts, e.g. potassium cyanide, potassium ferrocyanide etc. It has now been shown that compounds which do not have the cyano group in such a bond as cyan salts or double cyanides can be used for the same purpose. There are rhodan salts, cyanates and the salts of Cyanamide proved suitable. These compounds are substances - 'at which nitrogen is still connected to other elements. The application of the Connections are made in the same way as in the process of the main patent.
i. Eine gesättigte Natriumbisulfatlösung wird zwischen Platinelektroden mit einer anodischen Stromdichte von 0,1 bis 0,3 Ampere und einer kathodischen Stromdichte von 1 bis 3 Ampere auf den Quadratzentimeter derartig elektrolysiert, daß während der Elektrolyse eine gesättigte Lösung von Rhodannatrium langsam zutropft. Dieser Zufluß wird so geregelt, daß stets ganz geringe Mengen Cyan im Elektrolyten nachweisbar sind. Der Elektrolyt wird während der Operation kühl gehalten.i. A saturated sodium bisulfate solution is between platinum electrodes with an anodic current density of 0.1 to 0.3 amps and a cathodic current density of 1 to 3 amps per square centimeter such that electrolyzed during electrolysis a saturated solution of sodium rhodium slowly drips in. This inflow is regulated in such a way that very small amounts of cyan can always be detected in the electrolyte. Of the Electrolyte is kept cool during the operation.
Man erhält so dauernd eine anodische Stromausbeute von 80 Prozent und darüber.In this way, an anodic current yield of 80 percent and above is continuously obtained.
2. In gleicher Weise wie bei Beispiel 1 wird Natriumbisulfat elektrolysiert unter Zufließenlassen einer Lösung von Natriumcyanamid, wobei eine anodische Stromausbeute von 55 Prozent und darüber erzielt wird.2. In the same way as in Example 1, sodium bisulfate is electrolyzed while flowing in a solution of sodium cyanamide, with an anodic current efficiency of 55 percent and above being achieved.
Das so dargestellte Natriumpersulfat ist rein weiß, selbst wenn stark eisenhaltiges Natriumbisulfat zur Verwendung gelangt.The sodium persulfate thus represented is pure white, even if it contains a lot of iron Sodium bisulfate is used.
Patent-Α nspruch :Patent claim:
Das durch Patent 205067 geschützte Verfahren zur Darstellung von Persulfaten durch Elektrolyse von Bisulfaten dahin abgeändert, daß dem Elektrolyten Salze der Cyansäure, Rhodanwasserstoffsäure oder des Cyanamids zugesetzt werden.The process for the preparation of persulfates protected by patent 205067 modified by the electrolysis of bisulfates so that the electrolyte salts of cyanic acid, hydrofluoric acid or of the cyanamide can be added.
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE205068T | 1907-04-14 | ||
| DE205067T | 1907-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE205068C true DE205068C (en) | 1908-12-14 |
Family
ID=32509321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1907205068D Expired DE205068C (en) | 1907-04-14 | 1907-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE205068C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639659A1 (en) * | 1993-08-07 | 1995-02-22 | BASF Aktiengesellschaft | Process and prepation of peroxydisulfuric and peroxymonosulfuric acids |
-
1907
- 1907-04-14 DE DE1907205068D patent/DE205068C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639659A1 (en) * | 1993-08-07 | 1995-02-22 | BASF Aktiengesellschaft | Process and prepation of peroxydisulfuric and peroxymonosulfuric acids |
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