| 초록 |
Alumina (γ-Al2O3) and silica(SiO2) have been widely used as adsorbents or catalysts/catalyst supports for dehydrogenation and desulfurization because of their high surface area, high thermal and chemical stability. In this study, SiO2/γ-Al2O3 composite particles were synthesized by spray pyrolysis combined with sol-gel process. The spray pyrolysis method has advantages of synthesizing spherical nano- or micron-sized particles in one step and controlling the size and morphology of the product particles. Also, mass production is possible with this method as it is a continuous reaction process. In order to control specific surface area and pore structures, the particles were prepared in various SiO2/γ-Al2O3 compositions after adding CTAB. The product particles were analyzed by BET, XRD, FE-SEM, and TGA. |
