한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제26권1호
  • /
  • Pages.91-99
  • /
  • 1989
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

옥살레이트 공침전법에 의한 고온 초전도체 YBa2Cu3O7-$\delta$의 합성 I. 분석화학적 측면의 이론적 고찰

Synthesis of High Tc Superconductor YBa2Cu3O7-$\delta$ by Oxalate Coprecipitation Method I. Theoretical Considerations based on Analytical Chemistry

  • 김배환 (서울대학교 자연대학 화학과) ;
  • 김배연 (연세대학교 공과대학 요업공학과) ;
  • 김창은 (연세대학교 공과대학 요업공학과) ;
  • 최진호 (서울대학교 자연대학 화학과)
  • 발행 : 1989.01.01
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초록

The concentrations of hydroxide, carbonate and oxalate for Y(III), Ba(II) and Cu(II) ions in an aqueous solution have been theoretically calcuated with respect to pH and their solubility diagram could be obtained. The optimum pH ofr oxalate coprecipitates at room temperature was estimated as<4, which was not influenced by carbonates and hydroxides in H2O solvent. The yield is dependent on the concentration of added oxalic acid, but the concentration of oxalic acid was fixed as 0.1M in this calculation for simplicity.

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참고문헌

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