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

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)
Publication Information
Korean Chemical Engineering Research / v.43, no.6, 2005 , pp. 740-744 More about this Journal
Abstract
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.
Keywords
$La_{1-x}Sr_xCo_{1-y}Fe_yO_{3-\delta}$ Sol; Perovskite; Viscosity; Sol-Gel Method;
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