WO2012063086A1 - Mixed metal oxide - Google Patents

Mixed metal oxide Download PDF

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Publication number
WO2012063086A1
WO2012063086A1 PCT/GB2011/052213 GB2011052213W WO2012063086A1 WO 2012063086 A1 WO2012063086 A1 WO 2012063086A1 GB 2011052213 W GB2011052213 W GB 2011052213W WO 2012063086 A1 WO2012063086 A1 WO 2012063086A1
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WIPO (PCT)
Prior art keywords
metal oxide
mixed metal
perovskite
range
denotes
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PCT/GB2011/052213
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English (en)
French (fr)
Inventor
Matthew Rosseinsky
John Claridge
Antoine Demont
Ruth Sayers
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University of Liverpool
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University of Liverpool
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Priority to US13/884,692 priority Critical patent/US20130337369A1/en
Priority to JP2013538279A priority patent/JP2013543835A/ja
Priority to EP11785774.8A priority patent/EP2637984A1/en
Publication of WO2012063086A1 publication Critical patent/WO2012063086A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Definitions

  • Transition metal oxides are of importance due to their wide array of functional behaviour.
  • the ABO3 perovskite has a pronounced structural flexibility that allows considerable compositional diversity. This results in a rich array of accessible and chemically tuneable properties.
  • A-site cation and oxygen vacancy ordering are directly linked to the transition metal environment and oxidation state and have a dramatic influence on the targeted behaviour of the compound. Control of these features can be therefore of crucial importance for the generation of interesting new properties.
  • Ba is typically located preferentially (eg substantially exclusively) on a twelve coordinate site.
  • the twelve coordinate site is occupied predominantly by Ba.
  • 90% or more of the occupied twelve coordinate sites may be occupied by Ba.
  • the eight coordinate site is occupied by Z (eg yttrium) and X (eg calcium), preferably predominantly by Z.
  • Z eg yttrium
  • X eg calcium
  • the mixed metal oxide has a structural unit of formula:
  • ⁇ denotes optional oxygen non-stoichiometry
  • the metal dopant may be a twelve coordinate A-site metal dopant.
  • the metal dopant may be a nine coordinate A-site metal dopant.
  • the metal dopant may be an eight coordinate A-site metal dopant.
  • X is Ca
  • X' is preferably Sr
  • the mixed metal oxide may be present in a substantially monophasic or multiple phase composition (eg a binary or ternary phase composition).
  • the mixed metal oxide is present in a substantially monophasic composition.
  • the composition consists essentially of the mixed metal oxide.
  • the mixed metal oxide may be present in the composition in an amount of 50wt% or more (eg in the range 50 to 99wt%), preferably 75wt% or more, particularly preferably 90wt% or more, more preferably 95wt% or more.
  • the composition may comprise one or more non-perovskite phases.
  • the non- perovskite phases may be mixed metal oxide phases of two or more (eg three) of Ba, X, Z or T. Examples include BaT 2 0 4 , X 2 T 2 0 5 (eg Ca 2 Fe 2 0 5 ) and Z 2 0 3 (eg Y 2 0 3 ).
  • the amount of non-perovskite phases present in the composition may be such that the phases are non-discernible in an X-ray diffraction pattern.
  • the amount of non- perovskite phases present in the composition may be a trace amount.
  • Preferably b is in the range 2.0 to 2.6, particularly preferably 2.3 to 2.5 (eg about 2.4).
  • c' is in the range 2.0 to 2.5;

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  • Chemical & Material Sciences (AREA)
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  • Structural Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inert Electrodes (AREA)
  • Compounds Of Iron (AREA)
PCT/GB2011/052213 2010-11-12 2011-11-14 Mixed metal oxide Ceased WO2012063086A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/884,692 US20130337369A1 (en) 2010-11-12 2011-11-14 Mixed metal oxide
JP2013538279A JP2013543835A (ja) 2010-11-12 2011-11-14 混合金属酸化物
EP11785774.8A EP2637984A1 (en) 2010-11-12 2011-11-14 Mixed metal oxide

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GBGB1019156.7A GB201019156D0 (en) 2010-11-12 2010-11-12 Mixed metal oxide
GB1019156.7 2010-11-12

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WO2012063086A1 true WO2012063086A1 (en) 2012-05-18

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US (1) US20130337369A1 (enExample)
EP (1) EP2637984A1 (enExample)
JP (1) JP2013543835A (enExample)
GB (1) GB201019156D0 (enExample)
WO (1) WO2012063086A1 (enExample)

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CN107290221B (zh) * 2017-06-02 2023-08-04 中国工程物理研究院核物理与化学研究所 用于原位中子衍射的高温高压加载装置
JP6858992B2 (ja) * 2017-09-29 2021-04-14 学校法人神奈川大学 メリライト型複合酸化物
JP6987383B2 (ja) * 2017-09-29 2021-12-22 学校法人神奈川大学 金属空気電池用正極触媒及び金属空気電池
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