Korean Chemical Engineering Research

  • 제43권6호
  • /
  • Pages.740-744
  • /
  • 2005
  • /
  • 0304-128X(pISSN)
  • /
  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
권호 표지

Sol-Gel법에 의한 Perovskite-Type Oxide(La1-xSrxCo1-yFeyO3-δ) 코팅용액의 제조

Preparation of Perovskite-Type Oxide (La1-xSrxCo1-yFeyO3-δ) Coating Solution by Sol-Gel Method

  • 박자룡 (건양대학교 화공생명학과) ;
  • 이동일 (건양대학교 화공생명학과) ;
  • 정상혁 (건양대학교 화공생명학과) ;
  • 김태환 (한국에너지기술연구원 에너지시스템연구부) ;
  • 성재석 (한국에너지기술연구원 에너지시스템연구부) ;
  • 송기창 (건양대학교 화공생명학과)
  • Park, Ja-Ryong (Department of Chemical Engineering, Konyang University) ;
  • Lee, Dong-Il (Department of Chemical Engineering, Konyang University) ;
  • Jung, Sang-Hyeok (Department of Chemical Engineering, Konyang University) ;
  • Kim, Tae-Hwan (Energy System Division, Korea Institute of Energy Research) ;
  • Sung, Jae-Suk (Energy System Division, Korea Institute of Energy Research) ;
  • Song, Ki-Chang (Department of Chemical Engineering, Konyang University)
  • 투고 : 2004.12.20
  • 심사 : 2005.10.10
  • 발행 : 2005.12.31
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초록

$La(NO_3)_3{\cdot}xH_2O$, $Sr(NO_3)_2$, $Co(NO_3)_2{\cdot}6H_2O$, $Fe(NO_3)_3{\cdot}9H_2O$를 출발물질로 하고 La와 Sr의 몰비를 변화시켜 perovskite형 산화물인 $La_{1-x}Sr_xCo_{1-y}Fe_yO_{3-{\delta}}$ 졸을 제조하였다. 또한, 여러 조건에서 합성된 졸의 특성을 확인하기 위해 viscometer, FT-IR, TG-DTA, XRD 등을 사용하여 분석을 행하였다. 제조된 perovskite형 산화물 졸은 1.16 cp의 평균점도를 나타내었으며 조성에 관계없이 pH 0.5 정도의 강산성을 나타내었다. 용액 중의 La 함량이 많아질수록 동일 부피에서의 용액의 점도가 낮았고, 점도가 급격하게 증가하는 겔화시간이 증가하였다.

Perovskite-type oxide $La_{1-x}Sr_xCo_{1-y}Fe_yO_{3-{\delta}}$ sols were prepared by sol-gel method using $La(NO_3)_3{\cdot}xH_2O$, $Sr(NO_3)_2$, $Co(NO_3)_2{\cdot}6H_2O$ and $Fe(NO_3)_3{\cdot}9H_2O$ as starting materials. The properties of the perovskite-type oxide sols were investigated by viscometer, FT-IR, TG-DTA and XRD. The prepared sols showed 1.16 cp in average viscosity, and a strong acidic condition of pH 0.5, irrespective of composition of the starting materials. The viscosity of sols at the same volume decreases, but the gelation time of sols, at which the sol viscosity increases rapidly, increases when increasing La concentration in composition of starting materials.

키워드

과제정보

연구 과제 주관 기관 : 과학기술부

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