WO2001057290A1 - Cellule electrolytique avec electrodes a diffusion gazeuse - Google Patents

Cellule electrolytique avec electrodes a diffusion gazeuse Download PDF

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Publication number
WO2001057290A1
WO2001057290A1 PCT/EP2001/001062 EP0101062W WO0157290A1 WO 2001057290 A1 WO2001057290 A1 WO 2001057290A1 EP 0101062 W EP0101062 W EP 0101062W WO 0157290 A1 WO0157290 A1 WO 0157290A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
gas diffusion
diffusion electrode
compartment
membrane
Prior art date
Application number
PCT/EP2001/001062
Other languages
English (en)
Inventor
Giuseppe Faita
Fulvio Federico
Original Assignee
Uhdenora Technologies S.R.L.
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 Technologies S.R.L. filed Critical Uhdenora Technologies S.R.L.
Priority to AU2001233728A priority Critical patent/AU2001233728A1/en
Publication of WO2001057290A1 publication Critical patent/WO2001057290A1/fr

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
    • 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

Definitions

  • chlor-alkali electrolysis for producing chlorine gas
  • polymer containing anionic groups for example sulphonic and/or
  • a chlor-alkali electrolysis cell comprising a cathode fed with an oxygen-
  • thermodynamic as the two cells, the conventional one and that
  • the cell voltage of a conventional cationic membrane cell operated at a current density of 4 kA/m 2 is about 3 Volts, while that of a
  • the oxygen cathode is
  • microporous layer consisting of electrocatalytic particles
  • the layer may comprise a further film, also containing particles
  • conductive but not electrocatalytic preferably conductive but not electrocatalytic, and a binder.
  • the porous support may be made by a mesh, a variously
  • the discharge of the product caustic soda may be effected essentially in two ways, either towards the membrane in the case of a cathode parallel
  • a liquid film about 2-3 mm thick as previously said, is formed and is normally circulated upwards (the electrodes are vertically
  • the gradient may be positive (the caustic soda pressure is higher
  • the gradient may be negative
  • cathode is maintained about 2-3 mm spaced apart from the membrane
  • cathodic liquor in this specific case herein discussed, caustic soda
  • part of the cell may be supplied with a gas reactant, for example oxygen.
  • a gas reactant for example oxygen.
  • oxygen reacts onto the cathodic surface only after diffusion
  • EP 0150018 A1 is directed to solve not the
  • EP 0150018 A1 the fact that the electrodes are completely covered by a
  • the caustic soda released on the oxygen atmosphere side exhibits a
  • the concentration of the product caustic soda is necessarily the one
  • the cell structure of the invention eliminates the problems of the pressure differential, at the same time ensuring an operation stable with time even with cell heights in the
  • the cell of the invention is made of two compartments separated by an ion-
  • an electrolyser which may be of the monopolar or
  • caustic soda taken as a particularly representative example but not
  • the ion-exchange membrane is of the cationic
  • the anode is made, as
  • the oxygen cathode consists of a porous conductive support having
  • electrocatalytic particles stabilised by a binder applied thereto.
  • a layer may optionally be
  • conductive particles and a binder both having hydrophobic characteristics.
  • the porous support may be a carbon cloth or paper, optionally graphitised
  • a metallic layer such as for example a mesh of woven
  • wires a perforated sheet or an expanded and flattened sheet, a foam, a
  • the metal is preferably
  • silver, but also nickel, stainless steels, nickel alloys, are suitable, in particular if coated by a thin layer of silver deposited by a chemical or
  • Silver is preferred due to its high chemical
  • silver oxide is highly protective, there is no release of metal in the form of ions which could poison the membrane.
  • cathode is not made of silver or coated with silver.
  • particles comprise a catalyst suitable for favouring the oxygen reaction to form alkalinity.
  • catalysts are the platinum group metals and above
  • pyrochlores in particular ruthenium, silver or gold pyrochlores.
  • Vulcan XC-72 commercialised by Cabot Corp. under the trademark Vulcan XC-72
  • hydrophobic layer optionally applied to the cathode are made of low surface area carbon at least partially graphitised, such as for example the
  • fluorinated material such as polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymers, perfluoroalcoxypolymers, polyvinylidenfluoride, polychlorofluoroethylene
  • Nafion ® these materials exhibit a lower hydrophobicity due to the presence of ionic groups. Cathodes suitable for consuming oxygen and
  • the electric current is supplied to the oxygen cathode by a current
  • apertures for example a mesh of woven wires, perforated sheet, flattened
  • the current distributor consists of a first rigid
  • the metal is silver or stainless steel or nickel, preferably coated with silver.
  • oxygen cathode and the current distributor may be provided by mechanical
  • the cathode itself are fixed to elastic supports allowing the
  • conductive elastic supports such as springs made of corrosion resistant
  • resilient layer not to be taken as limiting the field of the invention, is a mattress comprising a
  • the compression exerted as above described is comprised between 1 and 2
  • peripheral gaskets well known in the prior art.
  • the oxygen cathode and the current distributor may be obtained by
  • the invention foresees that a planar porous element be inserted between
  • planar element may be any shape of the planar element.
  • the form of the planar element may be any shape of the planar element.
  • suitable materials are foams, preferably with open pores, mattresses made
  • planar meshes of woven wires may consist of one of these elements alone or
  • the oxygen atmosphere is small along the whole length of the cathode
  • differential is small, in particular below 30 cm (of water column), preferably
  • operation may be carried out at a current
  • concentration gradient of only 1.7%. The concentration gradient is
  • Fig. 1 shows the structure of the cell of the invention.
  • Fig. 2 shows a mock-up of the cell of fig. 1
  • Fig. 3 shows a detail of the structure of the porous planar element
  • Fig. 4 shows a porous planar element consisting of a mesh obtained by
  • FIG. 5 shows a porous planar element consisting of a mesh of wires having
  • Cell 1 comprises two shells, anodic 2 and
  • cathodic 7 made of titanium and nickel respectively.
  • the two shells are
  • the cationic membrane used in chlor-alkali, and specifically chlorine- caustic soda electrolysis is made of a perfluorinated polymer on whose
  • peripheral gaskets 8 The
  • anodic shell 2 contains the anode 3, made of a titanium sheet with
  • apertures for example an expanded or perforated sheet, provided with an
  • the anode 3 is fixed to the shell 2 by
  • the cathodic current distributor 11 consisting of a
  • metallic sheet with apertures for example metallic mesh, perforated or
  • expanded sheet made preferably of silver or alternatively nickel, stainless
  • cathode and current distributor may be mechanically provided if the supports 12 of the current distributor are elastic and undergo a deflection
  • the required compression may be obtained by maintaining the pressure inside the anodic shell 2 higher than that of the
  • planar element/oxygen cathode/current distributor assembly whose
  • supports 12 are in this case rigid, thus causing an efficient contact over the
  • the fresh caustic soda solution if fed through the distributor 13, for example a perforated pipe, and flows
  • caustic soda solution consisting of a mixture of fed caustic soda and
  • cathode fed with a gas containing oxygen has been assumed as the preferred type of gas diffusion electrode in the description of the invention and in the following examples, also anodes fed with hydrogen may use the device of the invention comprising the porous planar
  • 17 is made of two shells 18 and 19 made of transparent plastic clamped
  • peripheral sealing is provided by peripheral gaskets 20
  • the shell 19 is
  • planar element 9 of the invention is interposed between shell 18 and
  • the available cross section for the passage of liquid is that of the duct less the encumbrance of
  • the shell 18 is provided with nozzles 21 and 23 for feeding and withdrawing the liquid, having a diameter sufficient for a
  • the two upper and lower chambers 28a and 29a each contain a support element, 28b e 29b respectively, to support the membrane 16 and avoid deformation of the same, preventing the free passage of liquid.
  • the shell 18 is further provided with pressure meters 24 positioned at different levels
  • the table shows also the range of pressure values (coinciding with the pressure differential existing in the cell between the two faces of the
  • planar elements are:
  • Carbon cloth PWB-3 produced by Zoltek/USA, made of fibre bundles
  • Nickel foam with an average porosity of 100 ppi (pores per inch) and
  • planar elements allow for a wide range of flow-rates with overpressure
  • mm are preferred as an upper limit in order to reduce the ohmic drops
  • the resulting flow-rate was 15 l/h, thus showing the laminar nature of the hydraulic regimen which characterises the liquid flow in the planar element
  • EXAMPLE 3 A cell with an available cross section of 20 cm (width) x 120 cm (height),
  • Anode made of a 1 mm thick titanium sheet expanded to form
  • cathodic current distributor fixed to the wall of the cathodic shell by
  • oxygen cathode made of a 80 mesh supporting mesh of nickel wires
  • the cell was fed with a sodium chloride solution at a concentration of about
  • the cathodic shell was fed also with 99% oxygen (nitrogen to
  • Example 3 The test of Example 3 was repeated with a similar cell, with the only
  • the operating voltage of the three cells was 2.15, 2.05, 2.10
  • diffusion electrodes of the monopolar type is capable of withstanding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inert Electrodes (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

Cette invention concerne une cellule électrolytique à membrane comprenant un compartiment anode (2) et un compartiment cathode (7), dans laquelle un au moins des deux compartiments contient une électrode à diffusion gazeuse (10) et dans laquelle un élément poreux plat (9) est monté entre la membrane (16) et l'électrode à diffusion gazeuse (10). De l'électrolyte (13) provenant de l'intérieur de l'electrolyseur traverse l'élément poreux plat par gravité. L'ensemble membrane/élément plat/électrode à diffusion gazeuse est maintenu comprimé par le distributeur de courant de électrode à diffusion gazeuse lorsque le distributeur repose sur des supports souples. Dans ce cas, l'autre électrode de la cellule est rigide. En variante, la pression du compartiment qui renferme électrode à diffusion gazeuse est maintenu à un niveau de pression inférieur à celui de l'autre compartiment. Par suite de ce différentiel de pression, l'élément plat et l'électrode à diffusion gazeuse se trouvent comprimés contre le distributeur de courant, lequel repose dans ce cas sur des supports rigides. Lorsque l'électrode à diffusion gazeuse constitue la cathode et que le gaz renferme de l'oxygène, la cellule convient tout particulièrement bien pour l'électrolyse chlore-alcali.
PCT/EP2001/001062 2000-02-02 2001-02-01 Cellule electrolytique avec electrodes a diffusion gazeuse WO2001057290A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001233728A AU2001233728A1 (en) 2000-02-02 2001-02-01 Electrolysis cell provided with gas diffusion electrodes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MI000150A IT1317753B1 (it) 2000-02-02 2000-02-02 Cella di elettrolisi con elettrodo a diffusione di gas.
ITMI2000A000150 2000-02-02

Publications (1)

Publication Number Publication Date
WO2001057290A1 true WO2001057290A1 (fr) 2001-08-09

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Family Applications (1)

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PCT/EP2001/001062 WO2001057290A1 (fr) 2000-02-02 2001-02-01 Cellule electrolytique avec electrodes a diffusion gazeuse

Country Status (3)

Country Link
AU (1) AU2001233728A1 (fr)
IT (1) IT1317753B1 (fr)
WO (1) WO2001057290A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042430A2 (fr) * 2001-11-12 2003-05-22 Uhdenora Technologies S.R.L. Cellule electrolytique avec electrode de diffusion du gaz
WO2003102271A2 (fr) * 2002-06-04 2003-12-11 De Nora Elettrodi S.P.A Element distribution destine a une cellule electrochimique a percolation electrolytique
WO2005012595A1 (fr) * 2003-07-24 2005-02-10 Bayer Materialscience Ag Cellule electrochimique
WO2007080193A2 (fr) * 2006-01-16 2007-07-19 Uhdenora S.P.A. Distributeur de courant élastique pour cellules de percolation
EP2096102A1 (fr) 2008-03-01 2009-09-02 Bayer MaterialScience AG Procédé de fabrication de méthylène-diphényle-diisocyanates
EP2148942A2 (fr) * 2007-05-14 2010-02-03 GRT, Inc. Procédé de conversion de matières premières d'hydrocarbures avec récupération électrolytique d'halogène
US7972484B2 (en) 2006-04-12 2011-07-05 Industrie De Nora S.P.A. Gas diffusion electrode for electrolyte-percolating cells
EP2397578A2 (fr) 2010-06-16 2011-12-21 Bayer MaterialScience AG Electrode catalytique consommant de l'oxygène et son procédé de fabrication
EP2398101A1 (fr) 2010-06-17 2011-12-21 Bayer MaterialScience AG Electrode de diffusion gazeuse et méthode de fabrication
EP2461402A1 (fr) 2010-12-03 2012-06-06 Bayer MaterialScience AG Electrode catalytique consommant de l'oxygène et son procédé de fabrication
DE102011008163A1 (de) 2011-01-10 2012-07-12 Bayer Material Science Ag Beschichtung für metallische Zellelement-Werkstoffe einer Elektrolysezelle
US8247098B2 (en) 2004-04-17 2012-08-21 Bayer Materialscience Ag Electrochemical cell
WO2012152367A3 (fr) * 2011-05-06 2013-04-25 Thyssenkrupp Uhde Gmbh Pile à combustible dotée d'un joint de cadre pour l'étanchéité contre des fuites de bord de l'électrolyte
EP2639337A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène
EP2639338A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène dans un ensemble de micro-espaces
EP2639339A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène comportant des ouvertures
US8882972B2 (en) 2011-07-19 2014-11-11 Ecolab Usa Inc Support of ion exchange membranes
EP3418429A1 (fr) 2017-06-21 2018-12-26 Covestro Deutschland AG Électrode à diffusion de gaz destinée à réduire l'oxyde d'azote
EP3670706A1 (fr) 2018-12-18 2020-06-24 Covestro Deutschland AG Procédé d'électrolyse à membrane de solutions de chlorure alcalin à l'aide d'une électrode à diffusion gazeuse
AT526359B1 (de) * 2022-10-25 2024-02-15 Univ Linz Dreikammerzelle

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH11124698A (ja) * 1997-10-16 1999-05-11 Permelec Electrode Ltd ガス拡散電極を使用する電解槽
JP2946328B1 (ja) * 1998-08-25 1999-09-06 長一 古屋 食塩電解方法及び電解槽
EP1033419A1 (fr) * 1998-08-25 2000-09-06 Toagosei Co., Ltd. Cellule d'electrolyse a la soude, dotee d'une electrode de diffusion de gaz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11124698A (ja) * 1997-10-16 1999-05-11 Permelec Electrode Ltd ガス拡散電極を使用する電解槽
US6117286A (en) * 1997-10-16 2000-09-12 Permelec Electrode Ltd. Electrolytic cell employing gas diffusion electrode
JP2946328B1 (ja) * 1998-08-25 1999-09-06 長一 古屋 食塩電解方法及び電解槽
EP1033419A1 (fr) * 1998-08-25 2000-09-06 Toagosei Co., Ltd. Cellule d'electrolyse a la soude, dotee d'une electrode de diffusion de gaz

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100939448B1 (ko) * 2001-11-12 2010-01-29 유데노라 에스.피.에이. 가스 확산 전극을 갖는 전해 전지
WO2003042430A3 (fr) * 2001-11-12 2004-03-11 Uhdenora Technologies Srl Cellule electrolytique avec electrode de diffusion du gaz
CN1303255C (zh) * 2001-11-12 2007-03-07 乌德诺拉技术有限责任公司 具有气体扩散电极的电化学池
WO2003042430A2 (fr) * 2001-11-12 2003-05-22 Uhdenora Technologies S.R.L. Cellule electrolytique avec electrode de diffusion du gaz
US7670472B2 (en) 2001-11-12 2010-03-02 Uhdenora Technologies S.R.L. Electrolysis cell with gas diffusion electrode
WO2003102271A2 (fr) * 2002-06-04 2003-12-11 De Nora Elettrodi S.P.A Element distribution destine a une cellule electrochimique a percolation electrolytique
WO2003102271A3 (fr) * 2002-06-04 2004-02-05 Uhdenora Technologies Srl Element distribution destine a une cellule electrochimique a percolation electrolytique
US7828941B2 (en) 2002-06-04 2010-11-09 Industrie De Nora S.P.A. Distributing element for electrolyte percolation electrochemical cell
WO2005012595A1 (fr) * 2003-07-24 2005-02-10 Bayer Materialscience Ag Cellule electrochimique
US8247098B2 (en) 2004-04-17 2012-08-21 Bayer Materialscience Ag Electrochemical cell
WO2007080193A2 (fr) * 2006-01-16 2007-07-19 Uhdenora S.P.A. Distributeur de courant élastique pour cellules de percolation
WO2007080193A3 (fr) * 2006-01-16 2007-11-29 Uhdenora Spa Distributeur de courant élastique pour cellules de percolation
US7972484B2 (en) 2006-04-12 2011-07-05 Industrie De Nora S.P.A. Gas diffusion electrode for electrolyte-percolating cells
EP2148942A4 (fr) * 2007-05-14 2011-11-09 Grt Inc Procédé de conversion de matières premières d'hydrocarbures avec récupération électrolytique d'halogène
EP2148942A2 (fr) * 2007-05-14 2010-02-03 GRT, Inc. Procédé de conversion de matières premières d'hydrocarbures avec récupération électrolytique d'halogène
DE102008012037A1 (de) 2008-03-01 2009-09-03 Bayer Materialscience Ag Verfahren zur Herstellung von Methylen-diphenyl-diisocyanaten
EP2096102A1 (fr) 2008-03-01 2009-09-02 Bayer MaterialScience AG Procédé de fabrication de méthylène-diphényle-diisocyanates
US8318971B2 (en) 2008-03-01 2012-11-27 Bayer Materialscience Ag Process for preparing methylenediphenyl diisocyanates
EP2397578A2 (fr) 2010-06-16 2011-12-21 Bayer MaterialScience AG Electrode catalytique consommant de l'oxygène et son procédé de fabrication
DE102010024053A1 (de) 2010-06-16 2011-12-22 Bayer Materialscience Ag Sauerstoffverzehrelektrode und Verfahren zu ihrer Herstellung
US9243337B2 (en) 2010-06-16 2016-01-26 Covestro Duetschland AG Oxygen-consuming electrode with multilayer catalyst coating and process for the production thereof
EP2398101A1 (fr) 2010-06-17 2011-12-21 Bayer MaterialScience AG Electrode de diffusion gazeuse et méthode de fabrication
US10224552B2 (en) 2010-06-17 2019-03-05 Covestro Ag Gas diffusion electrode and process for production thereof
DE102010030203A1 (de) 2010-06-17 2011-12-22 Bayer Materialscience Ag Gasdiffusionselektrode und Verfahren zu ihrer Herstellung
DE102010062421A1 (de) 2010-12-03 2012-06-06 Bayer Materialscience Aktiengesellschaft Sauerstoffverzehrelektrode und Verfahren zu ihrer Herstellung
EP2461402A1 (fr) 2010-12-03 2012-06-06 Bayer MaterialScience AG Electrode catalytique consommant de l'oxygène et son procédé de fabrication
DE102011008163A1 (de) 2011-01-10 2012-07-12 Bayer Material Science Ag Beschichtung für metallische Zellelement-Werkstoffe einer Elektrolysezelle
WO2012095126A1 (fr) 2011-01-10 2012-07-19 Thyssenkrupp Uhde Gmbh Revêtement pour des matériaux métalliques d'élément de cellule d'une cellule électrolytique
WO2012152367A3 (fr) * 2011-05-06 2013-04-25 Thyssenkrupp Uhde Gmbh Pile à combustible dotée d'un joint de cadre pour l'étanchéité contre des fuites de bord de l'électrolyte
CN103620090A (zh) * 2011-05-06 2014-03-05 乌德诺拉股份公司 具有可替选地密封以防电解质边缘泄漏的框架密封件的电化学电池
JP2014514455A (ja) * 2011-05-06 2014-06-19 ウデノラ・ソチエタ・ペル・アツィオーニ 電解液が縁部に浸出することを防止する封止材の代替物としてのガスケットフレームを備える電気化学セル
US9476131B2 (en) 2011-05-06 2016-10-25 Uhdenora S.P.A. Electrochemical cell having a frame seal for alternative sealing against marginal leakages of the electrolyte
US8882972B2 (en) 2011-07-19 2014-11-11 Ecolab Usa Inc Support of ion exchange membranes
EP2639339A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène comportant des ouvertures
US9150970B2 (en) 2012-03-15 2015-10-06 Bayer Intellectual Property Gmbh Process for electrolysis of alkali metal chlorides with oxygen-consuming electrodes in micro-gap arrangement
DE102012204041A1 (de) 2012-03-15 2013-09-19 Bayer Materialscience Aktiengesellschaft Verfahren zur Elektrolyse von Alkalichloriden mit Sauerstoffverzehrelektroden, die Öffnungen aufweisen
DE102012204042A1 (de) 2012-03-15 2013-09-19 Bayer Materialscience Aktiengesellschaft Verfahren zur Elektrolyse von Alkalichloriden mit Sauerstoffverzehrelektroden in Micro-Gap Anordnung
DE102012204040A1 (de) 2012-03-15 2013-09-19 Bayer Materialscience Aktiengesellschaft Verfahren zur Elektrolyse von Alkalichloriden mit Sauerstoffverzehrelektroden
EP2639337A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène
US9273404B2 (en) 2012-03-15 2016-03-01 Bayer Intellectual Property Gmbh Process for electrolysis of alkali metal chlorides with oxygen-consuming electrodes
EP2639338A2 (fr) 2012-03-15 2013-09-18 Bayer Intellectual Property GmbH Procédé destiné à l'électrolyse de chlorures alcalins avec des électrodes d'alimentation en oxygène dans un ensemble de micro-espaces
WO2018234322A1 (fr) 2017-06-21 2018-12-27 Covestro Deutschland Ag Électrode à diffusion de gaz pour la réduction du dioxyde de carbone
EP3418429A1 (fr) 2017-06-21 2018-12-26 Covestro Deutschland AG Électrode à diffusion de gaz destinée à réduire l'oxyde d'azote
EP3670706A1 (fr) 2018-12-18 2020-06-24 Covestro Deutschland AG Procédé d'électrolyse à membrane de solutions de chlorure alcalin à l'aide d'une électrode à diffusion gazeuse
WO2020127021A2 (fr) 2018-12-18 2020-06-25 Covestro Intellectual Property Gmbh & Co. Kg Procédé d'électrolyse à membrane de solutions de chlorures alcalins en ayant recours à une électrode à diffusion gazeuse
AT526359B1 (de) * 2022-10-25 2024-02-15 Univ Linz Dreikammerzelle
AT526359A4 (de) * 2022-10-25 2024-02-15 Univ Linz Dreikammerzelle

Also Published As

Publication number Publication date
IT1317753B1 (it) 2003-07-15
ITMI20000150A0 (it) 2000-02-02
AU2001233728A1 (en) 2001-08-14
ITMI20000150A1 (it) 2001-08-02

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