Cordierite Powder Preparation from Alkoxides without Using Organic Solvents

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J. Korean Ceram. Soc. > Volume 31(3); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(3): 291.

유기용매의 사용없이 알콕사이드로부터 코디어라이트 분말제조

류수착, 김호룡¹, 김겸, 박희찬

부산대학교 무기재료공학과
¹남해요업(주)

Cordierite Powder Preparation from Alkoxides without Using Organic Solvents

ABSTRACT

Cordierite powders were prepared by controlled hydrolysis of metal alkoxides with catalysts in water medium without using organic solvents. Water was adjusted to a certain pH by HC1 and NH4OH. $alpha$-Cordierite powder was prepared from aluminum isopropoxide, tetraethyl orthosilicate and magnesium ethoxide mixed with water adjusted to pH of 3. At water pH of 11, $alpha$-cordierite, mullite and $beta$-quartz phases were coexisted. The powders were freeze dried, calcined and then fired at different temperatures. The characteristics of powders were examined by means of DTA, X-ray diffraction, FT-IR, and electron microscopy. It was found that $alpha$-cordierite could be synthesized at temperature of 120$0^{circ}C$ from the powders prepared by alkoxides with water medium without organic solvents.