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J. Korean Ceram. Soc. > Volume 28(9); 1991 > Article
Journal of the Korean Ceramic Society 1991;28(9): 739.
산화칼슘의 수화에 의한 수산화칼슘 미분말의 합성과 형상제어
민경소, 최상흘
한양대학교 무기재료공학과
Synthesis and Shape Control Calcium Hydroxide Fine Powders by Hydration of Calcium Oxide
ABSTRACT
Calcium hydroxide fine powders were synthesized by hydration of calcium oxide, and the shapes of powders obtained were examined for each synthethic condition. When distilled water was used as a solvent, irregular and agglomerated submicron powders were obtained, and it was impossible to control of the shapes. In methanol-added solutions, hexagonal plate-like particles were obtained, but addition of ethanol had no effect. However on the occasion that substituted ethylene glycol for ethanol of 5 vol%, hexagonal plate-like powders were obtained. The shapes of powders synthesized in acetic acid and salicylic acid solutions were hexagonal platelike, and were spherical and very fine in citric acid and oxalic acid solutions, respectively. But in some solutions, calcium salts were precipitated by the reaction between calcium and acid added. And the size of powders were very fine using ultrasonic vibration instead of mechanical agitation.
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