固相反応法,共沈法による前駆物質の熱分解法または複核錯体の熱分解法により調製されたペロブスカイト型酸化物 LaCoO_3  [in Japanese] Perovskite Oxide LaCoO_3 Prepared by Solid-state Reaction, Pyrolysis of a Co-Precipitated Precursor or Pyrolysis of a Heteronuclear Complex  [in Japanese]

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Abstract

The perovskite oxide LaCoO<sub>3</sub> was synthesized by three different preparative methods <i>i.e.</i>, the calcination of a mixture of La<sub>2</sub>O<sub>3</sub> and CoO (La–Co–O) and pyrolysis of a co-precipitated precursor (La–Co–ox), La<sub>2</sub> (C<sub>2</sub>O<sub>4</sub>)<sub>3</sub> · <i>x</i>H<sub>2</sub>O + CoC<sub>2</sub>O<sub>4</sub> · <i>y</i>H<sub>2</sub>O, and a heteronuclear complex (La–Co–CN), La[Co(CN)<sub>6</sub>] · 5H<sub>2</sub>O. The obtained powders were characterized by thermogravimetric analysis, infrared spectroscopy, powder X-ray diffraction, scanning electron microscopy and specific surface area measurements. The formation of LaCoO<sub>3</sub> single phase is clearly recognized for La–Co–O, La–Co–ox and La–Co–CN at temperatures above 1000, 1200 and 600 °C, respectively. The nano-sized LaCoO<sub>3</sub> powder was obtained at low temperatures by pyrolysis of La–Co–CN. The mean particle diameter of La–Co–CN calcined at 600 °C for 2 h was 72 nm.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 2002(3), 485-488, 2002-03-10

    The Chemical Society of Japan

References:  20

Codes

  • NII Article ID (NAID)
    10008439870
  • NII NACSIS-CAT ID (NCID)
    AN00186595
  • Text Lang
    JPN
  • Article Type
    NOT
  • ISSN
    03694577
  • NDL Article ID
    6155917
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-659
  • Data Source
    CJP  NDL  J-STAGE 
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