Water soluble Na〔Nb(O2)3〕・2H2O as a new molecular precursor for synthesis of sodium niobate

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  • DEY Deepa
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • PETRYKIN Valery
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • SASAKI Satoshi
    Materials and Structures Laboratory, Tokyo Institute of Technology
  • KAKIHANA Masato
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

書誌事項

タイトル別名
  • Water Soluble Na[Nb(O<sub>2</sub>)<sub>3</sub>]•2H<sub>2</sub>O as a New Molecular Precursor for Synthesis of Sodium Niobate
  • Water soluble Na Nb O2 3 2H2O as a new molecular precursor for synthesis of sodium niobate
  • Water Soluble Na[Nb(O<sub>2</sub>)<sub>3</sub>]&bull;2H<sub>2</sub>O as a New Molecular Precursor for Synthesis of Sodium Niobate

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抄録

A water-soluble tetraperoxo niobate [Nb(O2)4]3- was prepared by reaction of niobic acid with H2O2 at pH=11 in aqueous ammonia solution. The corresponding ammonium salt, (NH4)3[Nb(O2)4], was grown as a single crystal, and its crystal structure was solved. A white precipitate has been obtained from the solution containing (NH4)3[Nb(O2)4] and Na2CO3. Based on the elemental, TG, redox titration and Raman spectroscopic analyses, we have concluded that the obtained compound was Na[Nb(O2)3]•2H2O. This compound has been demonstrated to be a convenient precursor for synthesis of NaNbO3 by simple calcinations in air at the reduced temperature of 400-500°C.<br>

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