AT87314B - Process for the electrolytic preparation of sodium perborate. - Google Patents

Process for the electrolytic preparation of sodium perborate.

Info

Publication number
AT87314B
AT87314B AT87314DA AT87314B AT 87314 B AT87314 B AT 87314B AT 87314D A AT87314D A AT 87314DA AT 87314 B AT87314 B AT 87314B
Authority
AT
Austria
Prior art keywords
nickel
sodium perborate
electrolytic preparation
air
electrolyte liquid
Prior art date
Application number
Other languages
German (de)
Original Assignee
Degussa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Degussa filed Critical Degussa
Application granted granted Critical
Publication of AT87314B publication Critical patent/AT87314B/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/12Peroxyhydrates; Peroxyacids or salts thereof containing boron
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/28Per-compounds
    • C25B1/32Perborates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur elektrolytischen Darstellung von Natriumperborat. 



   Bei der   elekttolytischen   Darstellung von Natriumperborat hat es sich als zweckmässig herausgestellt, die Stromzuführung zu den Kathoden, soweit sie aus der Elektrolytflüssigkeit herausragen, gegen die Einwirkung von Flüssigkeit und Luft, die sich besonders an-der Grenze beider bemerkbar macht, zu schützen. 



   Zu diesem Zwecke kann man die Kathodenteile an der Eintauchstelle z. B. mit einem die
Luft abhaltenden und gegen die   Elektrolylflüssigkeit   widerstandsfähigen Schutzüberzug ver- sehen. Hierzu kann man z. B. ein jenen Einflüssen widerstehendes Metall, z. B. Platin, verwenden oder man kann die betreffenden Stellen mit einem widerstandsfähigen Anstrich versehen, oder man kann, wenn die Form es gestattet, einen   Gummischlauch   über die zu schützende Stelle ziehen. Schliesslich kann man die Kathode auch so anordnen, dass sie mit Luft überhaupt nicht in Berührung kommt, beispielsweise daduich, dass man die stromleitenden Teile unterhalb der
Elektrolytflüssigkeit in das Elektrolysiergefäss einführt. 



   Weitere Untersuchungen haben ergeben, dass als Schutzstoff ganz besonders Nickel geeignet ist, denn es wurde gefunden, dass Nickel unter allen als Kathodenmaterial für die elektrolytische Natriumperboratdarstellung in Betracht kommenden Stoffen, wie Kupfer, Eisen usw., insofern eine Ausnahmestellung einnimmt, als dasselbe auch an der Berührungszone von Elektrolytflüssigkeit und Luft nicht angegriffen wird. Auf Grund dieser Erkenntnis ist man in der Lage, aus anderen Stoffen als Nickel bestehende Elektroden bzw. ihre der Stromzuführung dienenden Teile an der Eintauchstelle durch Nickel zu schützen. Man kann z. B. Elektroden aus Eisen, Kupfer o. dgl. an den bedrohten Stellen aus Nickel ausbilden oder mit Nickelüberzügen versehen. 



   Natürlich kann man auch der ganzen Kathode einen Nickelüberzug geben oder sie vollständig aus Nickel herstellen. 



   Die Verwendbarkeit des Nickels zu diesem Zwecke war um so weniger vorauszusehen, als, wie bereits angegeben, alle übrigen für die Herstellung der Kathoden in Betracht kommenden unedlen Metalle bei gleichzeitiger Einwirkung von Elektrolytflüssigkeit und Luft angegriffen werden. 



   PATENT-ANSPRÜCHE : i. Verfahren zur elektrolytischen Darstellung von Natriumperborat, dadurch gekennzeichnet, dass die mit Elektrolytflüssigkeit in Berührung kommenden Teile der Kathode gegen Einwirkung von Luft geschützt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the electrolytic preparation of sodium perborate.



   In the electrolytic preparation of sodium perborate, it has been found to be useful to protect the power supply to the cathodes, insofar as they protrude from the electrolyte liquid, against the action of liquid and air, which is particularly noticeable at the boundary between the two.



   For this purpose, you can the cathode parts at the immersion z. B. with a die
Provide air-blocking and electrolyte-resistant protective coating. For this you can z. B. a metal resistant to those influences, e.g. B. platinum, or you can paint the areas concerned with a resistant paint, or you can, if the shape allows, pull a rubber hose over the area to be protected. Finally, the cathode can also be arranged so that it does not come into contact with air at all, for example by placing the electrically conductive parts underneath the
Introduces electrolyte liquid into the electrolysis vessel.



   Further investigations have shown that nickel is particularly suitable as a protective substance, because it has been found that among all substances that can be used as cathode material for the electrolytic preparation of sodium perborate, such as copper, iron, etc., nickel occupies an exceptional position as the same the contact zone between electrolyte liquid and air is not attacked. On the basis of this knowledge, it is possible to protect electrodes made of substances other than nickel or their parts used to supply current at the immersion point with nickel. You can z. B. Electrodes made of iron, copper or the like. Form nickel at the endangered areas or provided with nickel coatings.



   Of course, the entire cathode can also be coated with nickel or made entirely of nickel.



   The usefulness of nickel for this purpose was all the less foreseeable since, as already stated, all other base metals which can be used for the manufacture of cathodes are attacked by simultaneous exposure to electrolyte liquid and air.



   PATENT CLAIMS: i. Process for the electrolytic preparation of sodium perborate, characterized in that the parts of the cathode which come into contact with the electrolyte liquid are protected against the effects of air.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Ausführungsform des Verfahrens nach Anspruch I, dadurch gekennzeichnet, dass die Kathoden bzw. die stromzuführenden Teile an den Stellen, an welchen sie der Einwirkung von Elektrolytflüssigkeit und Luft ausgesetzt sind, aus Nickel ausgebildet oder durch Nickelüberzüge geschützt sind. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Embodiment of the method according to claim I, characterized in that the cathodes or the current-supplying parts are made of nickel or are protected by nickel coatings at the points at which they are exposed to the action of electrolyte liquid and air. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT87314D 1915-03-10 1916-02-07 Process for the electrolytic preparation of sodium perborate. AT87314B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE512575X 1915-03-10

Publications (1)

Publication Number Publication Date
AT87314B true AT87314B (en) 1922-02-10

Family

ID=6548160

Family Applications (2)

Application Number Title Priority Date Filing Date
AT88161D AT88161B (en) 1915-03-10 1915-09-24 Process for the preparation of sodium perborate.
AT87314D AT87314B (en) 1915-03-10 1916-02-07 Process for the electrolytic preparation of sodium perborate.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT88161D AT88161B (en) 1915-03-10 1915-09-24 Process for the preparation of sodium perborate.

Country Status (4)

Country Link
AT (2) AT88161B (en)
DK (1) DK23114C (en)
FR (1) FR512575A (en)
GB (1) GB100153A (en)

Also Published As

Publication number Publication date
DK23114C (en) 1918-05-27
AT88161B (en) 1922-04-25
FR512575A (en) 1921-01-26
GB100153A (en) 1916-11-30

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