Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Calcination Temperature on Cobalt Adsorption Capacity of$ZrO_2$ prepared by Sol-Gel Process

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

  • Published : 1996.04.01
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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.

본 연구는 졸-겔법을 이용하여 알칼리 조건인 pH 10에서 제조한 ZrO2의 하소온도에 따른 분말특성과 코발트 흡착량에 미치는 하소온도의 영향에 대하여 검토하였다. 졸-겔법을 이용하여 ZrO2 분말을 제조하고, 600, 800, 1000, 1200, 140$0^{\circ}C$로 하소한 후, X-선 회절법, SEM, BET 방법, Fourier transform 적외선(FT-IR), 열중량 및 열시차분석법(TG-DTA)등을 이용하여 특성을 분석하였다. 알칼리조건인 pH 10에서 제조한 ZrO2는 하소온도가 $600^{\circ}C$일때 고온수에서 코발트 흡착량이 가장 우수하였으며, 이때 $600^{\circ}C$로 하소한 ZrO2의 비표면적은 24.03m2/g이였으며 25$0^{\circ}C$의 고온수에서 코발트 흡착량은 0.16m-eq/g이였다.

Keywords

References

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