Preparation of Porous Cordierite by Using Water-Vapour Treatment

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J. Korean Ceram. Soc. > Volume 34(9); 1997 > Article

Journal of the Korean Ceramic Society 1997;34(9): 986.

수증기처리공정에 의한 다공성 코디어라이트의 제조

문교태, 서신석¹, 노재성, 조득희², 김동표

충남대학교 공과대학 정밀공업화학과
¹한일시멘트 중앙연구소
²한국화학연구소 촉매연구팀

Preparation of Porous Cordierite by Using Water-Vapour Treatment

ABSTRACT

Cordierite ceramic was prepared by sol-gel method. It was analyzed by Infrared spectroscopy and X-ray diffraction patterns that the ceramic was chemically mixed in molecular level and transformed to $alpha$-cordierite at 125$0^{circ}C$. Water vapour treatments for aging and drying process were conducted to get porous cordierite with thermally stable pore structure. It resulted in 220-410 $m^2$/g BET surface area and mesoporous structure with mean pore diameter, 40$AA$. Compared to naturally dried ceramic, the ceramic showed superior thermal stability of surface area up to $700^{circ}C$. Surfaces of porous cordierite ceramics were observed by SEM.

Key words: Porous cordierite, Sol-gel method, Water-vapour treatment