FR2434784A1 - Procede de production en milieu alcalin de composes stoechiometriques de plomb et bismuth a structure de pyrochlore - Google Patents

Procede de production en milieu alcalin de composes stoechiometriques de plomb et bismuth a structure de pyrochlore

Info

Publication number
FR2434784A1
FR2434784A1 FR7921775A FR7921775A FR2434784A1 FR 2434784 A1 FR2434784 A1 FR 2434784A1 FR 7921775 A FR7921775 A FR 7921775A FR 7921775 A FR7921775 A FR 7921775A FR 2434784 A1 FR2434784 A1 FR 2434784A1
Authority
FR
France
Prior art keywords
bismuth
lead
alkaline medium
compounds
production
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.)
Granted
Application number
FR7921775A
Other languages
English (en)
Other versions
FR2434784B1 (fr
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering 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
Priority claimed from US05/938,374 external-priority patent/US4176094A/en
Application filed by Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of FR2434784A1 publication Critical patent/FR2434784A1/fr
Application granted granted Critical
Publication of FR2434784B1 publication Critical patent/FR2434784B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G55/00—Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M12/00—Hybrid cells; Manufacture thereof
    • H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
    • H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Inert Electrodes (AREA)
  • Hybrid Cells (AREA)

Abstract

L'invention concerne un procédé de production en milieu alcalin de composés stoechiométriques de plomb et bismuth à structure de pyrochlore. Le procédé en solution liquide permet d'obtenir des composés de formule : A2 B2 O7-y dans laquelle A est le plomb ou le bismuth ou leurs mélanges, B est le ruthénium ou l'iridium ou leurs mélanges et y est supérieur ou égal à 0 et inférieur ou égal à 1. Il applique la réaction de canons A et B pour former un oxyde à structure de pyrochlore par précipitation des cations A et B dans une solution aqueuse source de ces cations dans un milieu alcalin liquide de pH au moins égal à environ 13,5 en présence d'une source d'oxygène suffisante pour satisfaire la stoechiométrie désirée, à une température inférieure à environ 200 degrés C pendant une période suffisante pour que la réaction ait lieu. Les pyrochlores de l'invention peuvent être utilisés par exemple comme électrodes à oxygène dans des dispositifs électrochimiques.
FR7921775A 1978-08-31 1979-08-30 Procede de production en milieu alcalin de composes stoechiometriques de plomb et bismuth a structure de pyrochlore Granted FR2434784A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/938,374 US4176094A (en) 1977-12-02 1978-08-31 Method of making stoichiometric lead and bismuth pyrochlore compounds using an alkaline medium

Publications (2)

Publication Number Publication Date
FR2434784A1 true FR2434784A1 (fr) 1980-03-28
FR2434784B1 FR2434784B1 (fr) 1984-02-24

Family

ID=25471324

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921775A Granted FR2434784A1 (fr) 1978-08-31 1979-08-30 Procede de production en milieu alcalin de composes stoechiometriques de plomb et bismuth a structure de pyrochlore

Country Status (6)

Country Link
JP (1) JPS5537479A (fr)
CA (1) CA1105235A (fr)
CH (1) CH639354A5 (fr)
DE (1) DE2915634A1 (fr)
FR (1) FR2434784A1 (fr)
GB (1) GB2029385B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63148695U (fr) * 1987-03-20 1988-09-30
JP4568124B2 (ja) * 2005-01-14 2010-10-27 学校法人同志社 空気極および該空気極を用いた空気二次電池
JP2010170998A (ja) * 2008-12-24 2010-08-05 Mitsubishi Heavy Ind Ltd 燃料電池用電極触媒およびその選定方法
GB201021352D0 (en) 2010-12-16 2011-01-26 Johnson Matthey Plc Catalyst layer
GB201213832D0 (en) * 2012-08-03 2012-09-19 Johnson Matthey Plc Cathode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816105A1 (de) * 1967-12-20 1969-12-11 Du Pont Ternaeres Ruthenium-Wismut-Oxid mit cubischer Kristallstruktur

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816105A1 (de) * 1967-12-20 1969-12-11 Du Pont Ternaeres Ruthenium-Wismut-Oxid mit cubischer Kristallstruktur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/71 *
EXBK/73 *

Also Published As

Publication number Publication date
CH639354A5 (de) 1983-11-15
CA1105235A (fr) 1981-07-21
DE2915634A1 (de) 1980-03-20
GB2029385A (en) 1980-03-19
JPS5537479A (en) 1980-03-15
GB2029385B (en) 1982-10-27
FR2434784B1 (fr) 1984-02-24

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Legal Events

Date Code Title Description
ST Notification of lapse