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J. Korean Ceram. Soc. > Volume 24(5); 1987 > Article
Journal of the Korean Ceramic Society 1987;24(5): 500.
Ethyl Silicate의 가수분해에 의한 단분산 Silica 미립자의 합성(1)
오일환, 박금철1
대구공업전문대학 요업과
1한양대학교 공과대학 무기재료공학과
Synthesis of Monodispersed Silica Fine Particle by Hydrolysis of Ethyl Silicate(1)
In order to synthesize monodispersed spherical silica fine particles, we investigated the reaction of hydrolysis of 0.05∼4.0 mole Si(OC2H5)4-0.01∼7.60mole NH3 -0.24∼38.40 mole H2O-2.62∼16.88mole C2H5OH systems. The range of the composition of solution which spherical silica particles were formed was enlarged according to an increase in concentration of Si(OC2H5)4. Larger particles were obtained at higher molar ratios of Si(OC2H5)4/C2H5OH, NH3/H2O and H2O/Si(OC2H5)4 and at a lower reaction temperature.
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