AT67163B - Process for producing an electrolyte for depositing metals. - Google Patents

Process for producing an electrolyte for depositing metals.

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Publication number
AT67163B
AT67163B AT67163DA AT67163B AT 67163 B AT67163 B AT 67163B AT 67163D A AT67163D A AT 67163DA AT 67163 B AT67163 B AT 67163B
Authority
AT
Austria
Prior art keywords
electrolyte
producing
depositing metals
solution
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Pascal Marino
Original Assignee
Pascal Marino
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 Pascal Marino filed Critical Pascal Marino
Application granted granted Critical
Publication of AT67163B publication Critical patent/AT67163B/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions

Landscapes

  • Chemical & Material Sciences (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)
  • Secondary Cells (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung eines Elektrolyten zum Niederschlagen von Metallen. 



   Es ist bekannt, dass durch Zusatz eines Reduktionsmittels zu   galvanischen   Bädern die Dissoziation der darin gelösten   Metallsalze befördert, und   die Niederschlagung des Metalles durch den Strom wesentlich erleichtert wird. Aus solchen stark dissoziierten Bädern können ohne 
 EMI1.1 
 von Zinn und Kupfer (Bronze), denen eine grosse wirtschaftliche und technische Bedeutung zukommt, niedergeschlagen werden. 



   Um einen beständigen Elektrolyten zu erhalten, ist es notwendig, dass als Reduktionsmittel eine Verbindung einer organischen Säure mit einer nicht flüchtigen Base angewendet wird. Da die galvanischen Bäder beim Ansetzen erwärmt werden, so muss überdies das Reduktionsmittel derart beschaffen sein, dass die Lösung nicht in   nachteiliger Weise beeinflusst wird. Es   wurde gefunden, dass unter den organischen Reduktionsmitteln das   borzitronensaure   M   le. sium   diesen Anforderungen entspricht und die günstigsten Ergebnisse liefert. 



   Zur Bereitung der galvanischen Bäder nach vorliegendem Verfahren wird die mit hor- 
 EMI1.2 
 zu verringern und so gewisse Affinitäten aufzuheben, was bei gewöhnlicher Temperatur nicht eintritt. Nach dem Erkalten kann der Lösung eine weitere Menge eines ande'enReduktions-. mittels, z. B.   Glykozitronensäure oder Glykoweinaäure zugefügt werden, um die Dissoziation   zu vervollständigen. 



   Das zur Verwendung gelangende Metallsalz muss im   Elektrolyten vollständi iöstich sein   und einen rein metallischen Niederschlag liefern. Im folgenden sind als Beispiel eirige Metallsalze   angeführt, welche   sich zur Bereitung derartiger Bäder eignen. 



   Zur Niederschlagung von Gold, Silber. Nickel oder Kupfer bzw. von Legierungen dieser Metalle werden die entsprechenden Alkalidoppelzyanide genommen. Iridium wird als Chlorid, 
 EMI1.3 
   welche sich beim Eintropfenlassen   einer alkalischen   Wolframatiösung   in verdünnte Salpetersäure bildet, in weinsaurem   Ammonium,   welches mit Kalium-oder Natriumphosphat versetzt ist, auflöst. Um Magnesium niederzuschlagen, wird eine mit Magnesium versetzte Lösung von trockenem Magnesiumsulfat in oxalsaurem Ammon benutzt. Für Aluminium nimmt man eine Lösung 
 EMI1.4 
   empfiehlt   sich die Anwendung von   Chromsulfat,   das in   Kalium-oder Aluminiumnsulfat gelöst   ist; bei Molybdän phosphormolybdänsaures Ammonium, das in Kaliumhydroxyd gelöst ist. 



     Galvanische Bäder   zur   Niederschlagung-einer Legierung werden bereitet, indem man ent-   weder die   Lösung   des   Metallsalzgemisches nach   der erwähnten Methode behandelt oder aber die Lösungen der einzelnen Metalle gesondert behandelt und dann zusammenmischt. Da die 
 EMI1.5 
 

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



   <Desc / Clms Page number 1>
 



  Process for producing an electrolyte for depositing metals.



   It is known that the addition of a reducing agent to galvanic baths promotes the dissociation of the metal salts dissolved therein, and the deposition of the metal by the current is considerably facilitated. Such strongly dissociated baths can be used without
 EMI1.1
 of tin and copper (bronze), which are of great economic and technical importance.



   In order to obtain a stable electrolyte, it is necessary that a compound of an organic acid with a non-volatile base is used as a reducing agent. Since the galvanic baths are heated during preparation, the reducing agent must also be of such a nature that the solution is not adversely affected. It has been found that among the organic reducing agents the boron citric acid M le. sium meets these requirements and delivers the most favorable results.



   To prepare the galvanic baths according to the present process, the
 EMI1.2
 to reduce and so cancel certain affinities, which does not occur at ordinary temperature. After cooling, the solution can be given a further amount of another reducing agent. by means of, e.g. B. glycocitric acid or glycovaric acid can be added to complete the dissociation.



   The metal salt used must be completely dissolved in the electrolyte and produce a purely metallic deposit. In the following, iron metal salts are given as examples, which are suitable for preparing such baths.



   For the crushing of gold, silver. Nickel or copper or from alloys of these metals the corresponding alkali double cyanides are used. Iridium is used as chloride,
 EMI1.3
   which is formed when an alkaline tungstate solution is dropped into dilute nitric acid, dissolves in tartaric ammonium, which is mixed with potassium or sodium phosphate. To precipitate magnesium, a magnesium-mixed solution of dry magnesium sulfate in oxalic acid ammonium is used. A solution is used for aluminum
 EMI1.4
   the use of chromium sulphate, which is dissolved in potassium or aluminum sulphate, is recommended; in the case of molybdenum phosphomolybdic acid ammonium, which is dissolved in potassium hydroxide.



     Galvanic baths for the precipitation of an alloy are prepared by either treating the solution of the metal salt mixture according to the method mentioned or treating the solutions of the individual metals separately and then mixing them together. Since the
 EMI1.5
 

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

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT67163D 1911-11-04 1912-10-24 Process for producing an electrolyte for depositing metals. AT67163B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191124562T 1911-11-04

Publications (1)

Publication Number Publication Date
AT67163B true AT67163B (en) 1914-12-10

Family

ID=32568281

Family Applications (1)

Application Number Title Priority Date Filing Date
AT67163D AT67163B (en) 1911-11-04 1912-10-24 Process for producing an electrolyte for depositing metals.

Country Status (4)

Country Link
AT (1) AT67163B (en)
FR (1) FR449822A (en)
GB (1) GB191124562A (en)
NL (1) NL610C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11103878B2 (en) 2017-04-03 2021-08-31 Yale University Electrochemical separation and recovery of metals
CA3283158A1 (en) 2021-06-01 2025-10-14 Nth Cycle, Inc. Electrochemical metal deposition system and method

Also Published As

Publication number Publication date
FR449822A (en) 1913-03-08
NL610C (en) 1915-04-01
GB191124562A (en) 1912-12-04

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