Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Cordierite Powder Preparation from Alkoxides without Using Organic Solvents

유기용매의 사용없이 알콕사이드로부터 코디어라이트 분말제조

  • Ryu, S.C. (Dept. of Inorganic Materials Engineering, Pusan National University) ;
  • Kim, H.R. (Nam Hae Ceramics Co.,Ltd.) ;
  • Kim, K. (Dept. of Inorganic Materials Engineering, Pusan National University) ;
  • Park, H.C. (Dept. of Inorganic Materials Engineering, Pusan National University)
  • 류수착 (부산대학교 무기재료공학과) ;
  • 김호룡 (남해요업(주)) ;
  • 김겸 (부산대학교 무기재료공학과) ;
  • 박희찬 (부산대학교 무기재료공학과)
  • Published : 1994.03.01
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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.

Keywords

References

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