DE370722C - Process for the electrolytic production of hydrosulphite solutions - Google Patents
Process for the electrolytic production of hydrosulphite solutionsInfo
- Publication number
- DE370722C DE370722C DEA36724D DEA0036724D DE370722C DE 370722 C DE370722 C DE 370722C DE A36724 D DEA36724 D DE A36724D DE A0036724 D DEA0036724 D DE A0036724D DE 370722 C DE370722 C DE 370722C
- Authority
- DE
- Germany
- Prior art keywords
- solutions
- hydrosulphite
- electrolytic production
- percent
- bisulfite
- 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
- C25B1/14—Alkali metal compounds
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)
Description
Verfahren zur elektrolytischen Herstellung von Hydrosulfitlösungen. Es ist allgemein bekannt, Hydrosulfite in der Weise elektrolytisch herzustellen, daß man Bisufitlösungen der kathodischen Reduktion unterwirft. Infolge der leichten Oxydierbarkeit des Hydrosulfits ist es aber hierbei notwendig, den Kathoden- vom Anodenraum durch ein Diaphragma zu trennen.Process for the electrolytic production of hydrosulphite solutions. It is well known that hydrosulphites can be produced electrolytically in such a way that that bisufite solutions are subjected to cathodic reduction. As a result of the easy Oxidizability of the hydrosulfite, however, it is necessary here to remove the cathode from Separate the anode compartment with a diaphragm.
Es wurde nun gefunden, daß man die elektrolytische Reduktion des Bisulfits zu 4ydrosulfit auch ohne Diaphragma durchführen kann, wenn man dafür sorgt, daß im Elektrolyten stets ein genügender Überschuß von Bisulfit oder Sulfit vorhanden ist. Überraschenderweise tritt hierbei die-Erscheinung auf, daß der anodische Sauerstoff nicht das gebildete Hydrosulfit zerstört, vielmehr das überschüssige Bisulfit bzw. Sulfit zu Sulfat oxydiert. Letzteres läßt sich gegebenenfalls leicht durch Auskristallisieren vom Hydrosulfit trennen.It has now been found that the electrolytic reduction of bisulfite can be used to 4ydrosulfit can also be carried out without a diaphragm, if one ensures that A sufficient excess of bisulfite or sulfite is always present in the electrolyte is. Surprisingly, the phenomenon occurs that the anodic oxygen does not destroy the hydrosulfite formed, but rather the excess bisulfite or Sulphite oxidizes to sulphate. The latter can, if necessary, easily be crystallized out separate from hydrosulfite.
Gegenüber den bisher bekannten Verfahren, welche mit einem Diaphragma arbeiten, zeichnet sich vorliegendes Verfahren durch Einfachheit der Apparatur und Bedienungsweise aus. Beispiel i.Compared to the previously known method, which with a diaphragm work, the present process is characterized by the simplicity of the apparatus and Operation mode off. Example i.
Eine Lösung, welche etwa ¢o Prozent Ammoniumbisulfit und etwa 25 Prozent Ammoniumsulfit enthält, wird in einer diaphragmenlosen Zelle in bekannter Weise bei einer Stromkonzentration von etwa 17 Ampere pro 11 und einer Stromdichte von etwa 2 Ampere pro i qdm elektrolysiert. Die Elektroden bestehen aus Blei, doch läßt sich auch ein anderes, geeignetes Material verwenden. Es gelingt auf diese Weise Lösungen zu gewinnen, die über 2o Prozent Hydrosulfit enthalten. Beispiel e.A solution which is about ¢ o percent ammonium bisulfite and about 25 percent Contains ammonium sulfite, is in a diaphragmless cell in a known manner at a current concentration of about 17 amps per 11 and a current density of electrolyzed about 2 amps per i qdm. The electrodes are made of lead, but leaves use another suitable material. It works that way To obtain solutions that contain over 2o percent hydrosulphite. Example e.
.ine Lösung, welche etwa 15 Prozent Naeuinbisulfit und etwa 12 Prozent Natriumsulfit enthält, wird in einer diaphragmenlosen Zelle bei einer Stromkonzentration von etwa 2o@ Ämpere pro 1 1 und einer Stromdichte von etwa 2 Ampere pro i qdm elektrolysiert. Man gewinnt eine etwa 8prozentige Hydrosulfitlauge ohne Störung. Wendet man stärkere Bisulfitlösungen an, so kann man auch zu stärkeren Hydrosulfitlösungen gelangen. Zweckmäßig hält man das angereicherte Natriumsulfat durch Temperaturerhöhung .in Lösung, oder man trennt es von der Lösung durch Auskristallisieren..a solution containing about 15 percent naeuin bisulfite and about 12 percent Containing sodium sulfite, is in a diaphragmless cell at a current concentration of about 20 @ amperes per 1 liter and a current density of about 2 amperes per i qdm. An approximately 8 percent hydrosulfite liquor is obtained without interference. If you turn stronger Bisulphite solutions, you can also get stronger hydrosulphite solutions. It is advisable to keep the enriched sodium sulfate by increasing the temperature Solution, or it is separated from the solution by crystallization.
Das gewonnene Hydrosulfit läßt sich entweder direkt in Lösung verwenden oder in bekannter Weise abscheiden.The hydrosulfite obtained can either be used directly in solution or deposit in a known manner.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA36724D DE370722C (en) | 1921-12-04 | 1921-12-04 | Process for the electrolytic production of hydrosulphite solutions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA36724D DE370722C (en) | 1921-12-04 | 1921-12-04 | Process for the electrolytic production of hydrosulphite solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE370722C true DE370722C (en) | 1923-03-16 |
Family
ID=6929806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA36724D Expired DE370722C (en) | 1921-12-04 | 1921-12-04 | Process for the electrolytic production of hydrosulphite solutions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE370722C (en) |
-
1921
- 1921-12-04 DE DEA36724D patent/DE370722C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0124087B1 (en) | Method of enrichment of sulfuric acid | |
DE370722C (en) | Process for the electrolytic production of hydrosulphite solutions | |
DE653833C (en) | Process for sodium sulfate electrolysis | |
DE1265153B (en) | Process for the production of pure nickel hydroxide | |
DE2510920A1 (en) | Electrochemical prepn of phthalide - from phthalic acid or anhydride, with final acidificn at controlled temp | |
DE666184C (en) | Process for the electrolytic production of hyposulfite | |
DE590230C (en) | Process for the production of ammonium sulfate | |
DE129861C (en) | ||
DE659192C (en) | Process for the production of hyposulfite | |
DE658111C (en) | Process for the production of hyposulfite | |
DE306194C (en) | ||
DE753434C (en) | Process for the purification of solutions used to generate per compounds | |
DE379512C (en) | Process for the production of pure aluminum salts | |
DE3529649A1 (en) | Process for concentrating sulphuric acid | |
DE687388C (en) | on | |
DE765387C (en) | Electrolysis of sodium sulfate solution | |
DE133186C (en) | ||
DE699943C (en) | irhodanid | |
DE752161C (en) | Electrolysis of alkali sulfate solution | |
AT84768B (en) | Process for the production of metal sulfides by electrolytic means. | |
SU59273A1 (en) | Method of electrolytic deposition of manganese | |
DE646421C (en) | Process and device for the electrolytic production of white lead | |
DE576817C (en) | Process for the electrodeposition of chromium | |
AT151956B (en) | Process for the electrolytic production of hyposulfite. | |
DE145602C (en) |