| 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 |
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| ABSTRACT |
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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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