| 초록 |
Aluminum tri-isopropoxide (ATI) vapor was thermally decomposed in a 500mL batch reactor at 170-250oC. The conversion was 58% at 250oC. The addition of hydrogen chloride by 10 mol% of the ATI increased the conversion to 96%. The as-produced particles were spherical and distributed in size range 50 to 150 nm, and contained chlorine ~1.0 at%. Upon heating in a thermogravimetric analyzer, the mass decreased to 70% at 1080oC, then rather increased thereafter to 80% of the initial mass at 1200oC. The as-produced particles were amorphous, but turned into α-phase by calcination 1200oC for 2 hours. Investigated were the effects of reaction temperature and the amount of hydrogen chloride on the particle morphology, particle size and chemical composition of produced alumina particles. |
