GB1155575A - A method of Electrolysing Aqueous Hydrochloric Acid - Google Patents

A method of Electrolysing Aqueous Hydrochloric Acid

Info

Publication number
GB1155575A
GB1155575A GB41126/66A GB4112666A GB1155575A GB 1155575 A GB1155575 A GB 1155575A GB 41126/66 A GB41126/66 A GB 41126/66A GB 4112666 A GB4112666 A GB 4112666A GB 1155575 A GB1155575 A GB 1155575A
Authority
GB
United Kingdom
Prior art keywords
silver
coating
electrode
potassium
bath
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
Application number
GB41126/66A
Inventor
Guenter Barthel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB1155575A publication Critical patent/GB1155575A/en
Expired legal-status Critical Current

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
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • C25B11/081—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the element being a noble metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

1,155,575. Electrodes for electrolyzing hydrochloric acid. METALLGESELLSCHAFT A.G. Sept. 14, 1966 [Oct.9, 1965], No.41126/66. Heading C7B. In a method of electrolyzing aqueous hydrochloric acid, at least one of the electrodes, preferably the cathode has a coating of silver in a highly activated, finely dispersed state. The electrode body may be formed of graphite or of iron. The silver coating may be formed on a graphite electrode either by impregnating the electrode with a silver salt which is thereafter reduced with a reducing agent, or by electrodepositing thereon a silver-zinc alloy and thereafter dissolving the major part of the zinc in an alkaline immersion bath. An iron electrode may be coated using the latter method and may be given protective coating of silver prior to depositing the silver-zinc alloy coating. The protective coating of silver and the silver-zinc alloy coating may be deposited consecutively in the same electro-plating bath by changing the current density and the degree of agitation of the bath. A suitable bath may contain potassium silver cyanide, potassium zinc cyanide, potassium cyanide and sodium or potassium hydroxide.
GB41126/66A 1965-10-09 1966-09-14 A method of Electrolysing Aqueous Hydrochloric Acid Expired GB1155575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0066896 1965-10-09

Publications (1)

Publication Number Publication Date
GB1155575A true GB1155575A (en) 1969-06-18

Family

ID=7311980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41126/66A Expired GB1155575A (en) 1965-10-09 1966-09-14 A method of Electrolysing Aqueous Hydrochloric Acid

Country Status (3)

Country Link
DE (1) DE1567689A1 (en)
FR (1) FR1496050A (en)
GB (1) GB1155575A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023077A2 (en) * 1979-07-02 1981-01-28 The Dow Chemical Company Electrolytic production of certain trichloropicolinic acids and/or 3,6-dichloropicolinic acid
FR2480795A1 (en) * 1980-04-22 1981-10-23 Johnson Matthey Co Ltd CATHODE FOR ELECTROCHEMICAL REACTIONS AND METHOD OF MANUFACTURE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242183A (en) * 1979-04-13 1980-12-30 The Dow Chemical Company Highly active silver cathode, preparation of same and use to make 2,3,5-trichloropyridine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023077A2 (en) * 1979-07-02 1981-01-28 The Dow Chemical Company Electrolytic production of certain trichloropicolinic acids and/or 3,6-dichloropicolinic acid
EP0023077B1 (en) * 1979-07-02 1984-06-20 The Dow Chemical Company Electrolytic production of certain trichloropicolinic acids and/or 3,6-dichloropicolinic acid
FR2480795A1 (en) * 1980-04-22 1981-10-23 Johnson Matthey Co Ltd CATHODE FOR ELECTROCHEMICAL REACTIONS AND METHOD OF MANUFACTURE

Also Published As

Publication number Publication date
DE1567689A1 (en) 1970-06-11
FR1496050A (en) 1967-09-22

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