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WO2008006909A3 - Chlor-alkali electrolyser equipped with oxygen-diffusion cathode - Google Patents

Chlor-alkali electrolyser equipped with oxygen-diffusion cathode Download PDF

Info

Publication number
WO2008006909A3
WO2008006909A3 PCT/EP2007/057279 EP2007057279W WO2008006909A3 WO 2008006909 A3 WO2008006909 A3 WO 2008006909A3 EP 2007057279 W EP2007057279 W EP 2007057279W WO 2008006909 A3 WO2008006909 A3 WO 2008006909A3
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
diffusion cathode
membrane
chlor
alkali
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.)
Ceased
Application number
PCT/EP2007/057279
Other languages
French (fr)
Other versions
WO2008006909A2 (en
Inventor
Giuseppe Faita
Angelo Ottaviani
Fulvio Federico
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.)
Thyssenkrupp Nucera Italy SRL
Original Assignee
Uhdenora SpA
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 Uhdenora SpA filed Critical Uhdenora SpA
Priority to JP2009518905A priority Critical patent/JP5160542B2/en
Publication of WO2008006909A2 publication Critical patent/WO2008006909A2/en
Publication of WO2008006909A3 publication Critical patent/WO2008006909A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm 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
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
    • C25B11/031—Porous electrodes
    • 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
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms

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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

The invention relates to an electrolytic cell (1) subdivided into two compartments by a cation-exchange membrane (2), the cathodic compartment (3) containing an oxygen- diffusion cathode (5) contacting the membrane through a catalysed hydrophilic porous layer and the anodic compartment (4) comprising one anode (6) provided with a catalytic coating for chlorine evolution spaced apart from the membrane (8). The cell of the invention produces chlorine having a reduced oxygen content and a caustic product of suitable concentration with no need of diluting the brine feed or humidifying the oxygen flow.
PCT/EP2007/057279 2006-07-14 2007-07-13 Chlor-alkali electrolyser equipped with oxygen-diffusion cathode Ceased WO2008006909A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009518905A JP5160542B2 (en) 2006-07-14 2007-07-13 Chloro-alkaline electrolytic cell with oxygen diffusion cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2006A001374 2006-07-14
IT001374A ITMI20061374A1 (en) 2006-07-14 2006-07-14 CHLORINE-SODA ELECTROLYZER EQUIPPED WITH OXYGEN DIFFUSION CATHODE

Publications (2)

Publication Number Publication Date
WO2008006909A2 WO2008006909A2 (en) 2008-01-17
WO2008006909A3 true WO2008006909A3 (en) 2008-11-27

Family

ID=38792406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057279 Ceased WO2008006909A2 (en) 2006-07-14 2007-07-13 Chlor-alkali electrolyser equipped with oxygen-diffusion cathode

Country Status (3)

Country Link
JP (1) JP5160542B2 (en)
IT (1) ITMI20061374A1 (en)
WO (1) WO2008006909A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024053A1 (en) 2010-06-16 2011-12-22 Bayer Materialscience Ag Oxygenating electrode and process for its preparation
CN103025920B (en) 2010-07-13 2015-08-26 氯工程公司 For the preparation of chlorine sodium hydroxide electrolyzer and prepare the method for chlorine sodium hydroxide
DE102010039846A1 (en) 2010-08-26 2012-03-01 Bayer Materialscience Aktiengesellschaft Oxygenating electrode and process for its preparation
DE102010042729A1 (en) 2010-10-21 2012-04-26 Bayer Materialscience Aktiengesellschaft Oxygenated cathode and process for its preparation
DE102011005133A1 (en) 2011-03-04 2012-09-06 Bayer Materialscience Aktiengesellschaft Method for operating an oxygen-consuming electrode
US9273405B1 (en) * 2014-11-20 2016-03-01 University Of Delaware Electrolysis device for chlorine production
AT527727B1 (en) * 2023-12-14 2025-06-15 Enerox Gmbh Electrochemical cell

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200652A (en) * 1986-12-19 1988-08-10 Olin Corp Electrolytic cell
WO2004005583A1 (en) * 2002-07-05 2004-01-15 Akzo Nobel N.V. Process for producing alkali metal chlorate
WO2004013379A1 (en) * 2002-07-31 2004-02-12 Bayer Materialscience Ag Electrochemical cell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200652A (en) * 1986-12-19 1988-08-10 Olin Corp Electrolytic cell
WO2004005583A1 (en) * 2002-07-05 2004-01-15 Akzo Nobel N.V. Process for producing alkali metal chlorate
WO2004013379A1 (en) * 2002-07-31 2004-02-12 Bayer Materialscience Ag Electrochemical cell

Also Published As

Publication number Publication date
ITMI20061374A1 (en) 2008-01-15
JP5160542B2 (en) 2013-03-13
WO2008006909A2 (en) 2008-01-17
JP2009543945A (en) 2009-12-10

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