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J. Korean Ceram. Soc. > Volume 41(3); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(3): 242.
doi: https://doi.org/10.4191/kcers.2004.41.3.242
마이크로에멀전의 화염분무열분해(ESP)에 의한 α-알루미나 나노입자의 제조
이상진, 전병세
경남대학교 신소재공학부
Preparation of α-Al2O3 Nanoparticles by flame Spray Pyrolysis (ESP) of Microemulsion
ABSTRACT
Nano-sized a-alumina with a narrow distribution was prepared by using Flame Spray Pyrolysis (FSP). The microemulsion of water in oil (W/O) was prepared to make ultrafine droplets for FSP process. Kerosene (fuel) as a continuos phase and Al(NO$_3$)$_3$$.$9$H_2O$ (oxidizer) aqueous solution as a dispersed phase were prepared for microemulsification. The microemulsion with dispersion stability was obtained by adjusting the composition of 80 vol% kerosene, 10 vol% aqueous solution, and 10 vol% emulsifying agent. Microemulsion was sprayed onto the flame by using two-fluid nozzle spray gun under the condition of 0.03 ㎫ air pressure. The synthesized products were $alpha$-alumina phase with the size of 20 to 30 nm.
Key words: Microemulsion, Flame Spray Pyrolysis (FSP), Droplets, Nano-sized, $\alpha$-alumina
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