Effect of Calcination Temperature on Cobalt Adsorption Capacity of<tex>$ZrO_2$</tex> prepared by Sol-Gel Process

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J. Korean Ceram. Soc. > Volume 33(4); 1996 > Article

Journal of the Korean Ceramic Society 1996;33(4): 432.

졸-겔법으로 제조한 $ZrO_2$ 의 코발트 흡착량에 미치는 하소온도의 영향

김유환, 김용익, 배성렬¹

한국원자력연구소
¹한양대학교 화학공학과

Effect of Calcination Temperature on Cobalt Adsorption Capacity of$ZrO_2$ prepared by Sol-Gel Process

ABSTRACT

ZrO2 gel was prepared under pH 10 alkaline condition by sol-gel process and was investigated as a function of calcination temperature and effect of calcination temperature on cobalt adsorption capacity. The ZrO2 powder prepared by sol-gel process was calcined at 600, 800, 1000, 1200, 140$0^{circ}C$ and analyzed by X-ray diffractometry. SEM specific surface area by BET nitrogen adsorption FT-IR and TG-DTA technique. It was shown that cobalt adsorption capacity of ZrO2 prepared under pH 10 alkaline condition and then calcined at $600^{circ}C$ in high temperature was determined to be larger than that of ZrO2 at various calcination temperature. The specific surface area of ZrO2 calcined at $600^{circ}C$ was 24.03m2/g and cobalt adsorption capacity at 25$0^{circ}C$ high-temperature water was 0.16m-eq/g

Key words: Zirconia, Monoclinc, Tetragonal, Sol-gel, Cobalt adsorption