| 초록 |
Transition alumina, γ-, ρ-, η-, χ-Al2O3 etc is an important class of materials as a binder, adsorbent and catalyst. The preparation ρ-Al2O3 from Al(OH)3 is not straightforward because it needs heat treatment in vaccum or flash calcination within 1-10 sec..In this work, the Al(OH)3 with different particle sizes, 8-100 μm was used for the preparation of ρ-Al2O3 using flash calcination at673-973 K.The obatined alumina was characterized with X-ray diffraction method, TGA, BET, scanning elecron microscophy and mercury porosimeter. |
