GB997887A - Electrolysis of alkali metal chloride solution - Google Patents

Electrolysis of alkali metal chloride solution

Info

Publication number
GB997887A
GB997887A GB20795/63A GB2079563A GB997887A GB 997887 A GB997887 A GB 997887A GB 20795/63 A GB20795/63 A GB 20795/63A GB 2079563 A GB2079563 A GB 2079563A GB 997887 A GB997887 A GB 997887A
Authority
GB
United Kingdom
Prior art keywords
anode
cell
brine
platinum
glass
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
GB20795/63A
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of GB997887A publication Critical patent/GB997887A/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
    • C25B15/00—Operating or servicing cells
    • 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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

<PICT:0997887/C6-C7/1> Aqueous alkali metal chloride solution is electrolysed at a pH below 5 in an alkali-chlorine cell using as anode having a Pt surface which has been pre-treated by subjecting it to cathodic electrolytic action. Typically a sodium chloride brine heated to a temperature between 20 DEG C. and its boiling point is electrolysed at a pH above 1, e.g. 3.5, using a pre-treated anode or Pt or W, Al, V, Nb, Pd or preferably Ti or Ta coated with a layer of at least 3m inches of Pt, the coating thickness for a Pd base being at least 100m inches. The pre-treatment may be effected in a separate cell and the treated anodes may be stored before use. Alternatively the anode may be connected briefly, e.g. for 10 seconds, as cathode in the brine cell in which it is to be used for alkali-chlorine production. As shown, the brine cell comprises cylindrical glass tanks 1 and 3 connected by a cylinder 2 containing a diaphragm 12 of asbestos, sintered glass, or asbestos impregnated with a polymer of maleic acid or its anhydride with divinyl benzene and/or styrene. The brine is introduced into the anode compartment 1 which contains a platinum-coated anode 4 with a platinum connector rod 5 encased in a glass tube 6 and a heater 13 while compartment 3 contains a platinum or steel cathode and a glass catholyte withdrawal tube 14. If polarity reversal is employed for anode conditioning a voltmeter can be arranged to signal a rise of say 1% in cell voltage and automatically initiate polarity reversal. Specification 917,879 is referred to.
GB20795/63A 1962-05-28 1963-05-24 Electrolysis of alkali metal chloride solution Expired GB997887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US198216A US3250691A (en) 1962-05-28 1962-05-28 Electrolytic process of decomposing an alkali metal chloride

Publications (1)

Publication Number Publication Date
GB997887A true GB997887A (en) 1965-07-14

Family

ID=22732464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20795/63A Expired GB997887A (en) 1962-05-28 1963-05-24 Electrolysis of alkali metal chloride solution

Country Status (6)

Country Link
US (1) US3250691A (en)
CH (1) CH419072A (en)
DE (1) DE1226089B (en)
FR (1) FR1360905A (en)
GB (1) GB997887A (en)
NL (2) NL290793A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485730A (en) * 1967-06-02 1969-12-23 Hooker Chemical Corp On-off operation of chlor-alkali diaphragm cells
FR2327326A1 (en) * 1975-10-08 1977-05-06 Solvay PROCESS FOR THE HANDLING OF AQUEOUS SOLUTIONS OF ALKALINE METAL HYDROXIDES CONCENTRATED IN ALKALINE METAL HALOGENIDES
US4185905A (en) * 1978-04-03 1980-01-29 Polaroid Corporation Dual purpose flash/strobe socket assembly for a photographic camera
US4488947A (en) * 1983-06-08 1984-12-18 Olin Corporation Process of operation of catholyteless membrane electrolytic cell
IT1263899B (en) * 1993-02-12 1996-09-05 Permelec Spa Nora DIAPHRAGM AND RELATED CELL CHLORINE-SODA ELECTROLYSIS PROCESS IMPROVED
DE60036582T2 (en) * 1999-08-06 2008-06-26 Puricore International Ltd. Electrochemical treatment of an aqueous solution
US6267854B1 (en) 1999-10-21 2001-07-31 Orville Lee Maddan Apparatus and method for producing magnesium from seawater
US6372017B1 (en) 2000-02-07 2002-04-16 Orville Lee Maddan Method for producing magnesium
US20070051640A1 (en) * 2000-08-07 2007-03-08 Sterilox Technologies, Inc. Electrochemical treatment of an aqueous solution
BR0213178A (en) * 2001-10-12 2004-09-14 Flexsys Bv Process for improving the purity of quaternary ammonium hydroxides by electrolysis in a two compartment cell
KR100363011B1 (en) * 2002-03-28 2002-11-30 Hanwha Chemical Corp Electrolyte composition for electrolysis of brine and electrolysis method of brine using the same
JP4626428B2 (en) * 2005-07-19 2011-02-09 ソニー株式会社 OFDM demodulator and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823177A (en) * 1954-01-13 1958-02-11 Hooker Electrochemical Co Method and apparatus for lowering the chlorate content of alkali metal hydroxides
US2827426A (en) * 1954-02-12 1958-03-18 Rohm & Haas Cationic permselective membranes and their use in electrolysis
US2929769A (en) * 1955-07-07 1960-03-22 Isaac L Newell Electroplating anode
US2872405A (en) * 1955-12-14 1959-02-03 Pennsalt Chemicals Corp Lead dioxide electrode
US2954333A (en) * 1957-07-11 1960-09-27 Columbia Southern Chem Corp Method of electrolyzing brine
US2987453A (en) * 1959-04-14 1961-06-06 Harshaw Chem Corp Method of electrodepositing chromium
US3096261A (en) * 1959-05-25 1963-07-02 Hooker Chemical Corp Salt bath for electrolytic cleaning of metals

Also Published As

Publication number Publication date
DE1226089B (en) 1966-10-06
FR1360905A (en) 1964-05-15
CH419072A (en) 1966-08-31
NL290793A (en) 1965-06-25
NL126636C (en) 1969-06-16
US3250691A (en) 1966-05-10

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