BR0112203A - Activation of a cathode - Google Patents

Activation of a cathode

Info

Publication number
BR0112203A
BR0112203A BR0112203-7A BR0112203A BR0112203A BR 0112203 A BR0112203 A BR 0112203A BR 0112203 A BR0112203 A BR 0112203A BR 0112203 A BR0112203 A BR 0112203A
Authority
BR
Brazil
Prior art keywords
cathode
electrocatalytic
cleaned
coated
metal ions
Prior art date
Application number
BR0112203-7A
Other languages
Portuguese (pt)
Other versions
BR0112203B1 (en
Inventor
Lars-Erik Bergman
Erik Zimmerman
Tomas Widenfalk
Bernd Busse
Original Assignee
Akzo Nobel Nv
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 Akzo Nobel Nv filed Critical Akzo Nobel Nv
Publication of BR0112203A publication Critical patent/BR0112203A/en
Publication of BR0112203B1 publication Critical patent/BR0112203B1/en

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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/42—Coating with noble metals
    • 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
    • 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)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Solid Thermionic Cathode (AREA)
  • Secondary Cells (AREA)
  • Chemically Coating (AREA)

Abstract

The present invention relates to a method for activation of a cathode comprising at least a cathode substrate wherein the cathode is cleaned by means of an acid,the cleaned cathode is coated with at least one electrocatalytic coating solution, drying the coated cathode until it is at least substantially dry, and thereafter contacting the cathode with a solvent redissolving precipitated electrocatalytic salts or acids formed on the cathode, originating from the electrocatalytic solution, to form dissolved electrocatalytic metal ions on the cathode surface, so that said electrocatalytic metal ions can precipitate as metals on the cathode. The invention also comprises a cathode obtainable by the method and the use of an activated cathode in an electrolytic cell for producing chlorine and alkali hydroxide.
BRPI0112203-7A 2000-07-06 2001-06-25 process for activating a cathode. BR0112203B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21649100P 2000-07-06 2000-07-06
EP00850124 2000-07-06
PCT/SE2001/001447 WO2002002847A1 (en) 2000-07-06 2001-06-25 Activation of a cathode

Publications (2)

Publication Number Publication Date
BR0112203A true BR0112203A (en) 2003-05-13
BR0112203B1 BR0112203B1 (en) 2012-05-15

Family

ID=27741095

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0112203-7A BR0112203B1 (en) 2000-07-06 2001-06-25 process for activating a cathode.

Country Status (11)

Country Link
EP (1) EP1297200B1 (en)
JP (1) JP3867913B2 (en)
KR (1) KR100546928B1 (en)
CN (1) CN1242099C (en)
AT (1) ATE350513T1 (en)
AU (2) AU2001266502B2 (en)
BR (1) BR0112203B1 (en)
CA (1) CA2415020C (en)
DE (1) DE60125763T2 (en)
WO (1) WO2002002847A1 (en)
ZA (1) ZA200300111B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4771467B2 (en) * 2005-11-17 2011-09-14 東亞合成株式会社 Method for producing high purity alkali metal hydroxide
EP1939182A1 (en) * 2006-12-22 2008-07-02 Speedel Experimenta AG Process for the preparation of (R or S)-2-Alkyl-3-heterocyclyl-1-propanols
US8349165B2 (en) 2008-11-25 2013-01-08 Tokuyama Corporation Process for producing an active cathode for electrolysis
EP3417093B1 (en) * 2016-03-31 2020-04-29 Siemens Aktiengesellschaft A technique for in-situ anode activation by a cathode in an alkaline water electrolytic cell
JP6672211B2 (en) 2017-03-21 2020-03-25 株式会社東芝 Carbon dioxide electrolysis apparatus and carbon dioxide electrolysis method
US11753730B2 (en) 2018-11-30 2023-09-12 Sedo Engineering Sa Leucodye (such as leucoindigo) as dispersing aid
EP3887577B1 (en) 2018-11-30 2022-12-07 Sedo Engineering SA By-products (impurity) removal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2074190B (en) * 1980-04-22 1984-03-14 Johnson Matthey Co Ltd Electrode
US5476688A (en) * 1988-08-29 1995-12-19 Ostolski; Marian J. Process for the preparation of noble metal coated non-noble metal substrates, coated materials produced in accordance therewith and compositions utilizing the coated materials
US5035789A (en) * 1990-05-29 1991-07-30 The Dow Chemical Company Electrocatalytic cathodes and methods of preparation

Also Published As

Publication number Publication date
CA2415020C (en) 2008-06-10
ATE350513T1 (en) 2007-01-15
CN1440467A (en) 2003-09-03
DE60125763D1 (en) 2007-02-15
EP1297200B1 (en) 2007-01-03
AU2001266502B2 (en) 2004-05-20
JP3867913B2 (en) 2007-01-17
KR20030013453A (en) 2003-02-14
BR0112203B1 (en) 2012-05-15
KR100546928B1 (en) 2006-01-26
CN1242099C (en) 2006-02-15
DE60125763T2 (en) 2007-10-18
ZA200300111B (en) 2004-01-21
EP1297200A1 (en) 2003-04-02
WO2002002847A1 (en) 2002-01-10
CA2415020A1 (en) 2002-01-10
AU6650201A (en) 2002-01-14
JP2004502035A (en) 2004-01-22

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Legal Events

Date Code Title Description
FA Application withdrawn
HKFA Application withdrawn (deleted)
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/05/2012, OBSERVADAS AS CONDICOES LEGAIS.

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2260 DE 29/04/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 12A, 13A, 14A, 15A, 16A, 17A, 18A E 19A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2607 DE 22-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.