NANOSIZED Al2O3-TiO2 OXIDE POWDER WITH ENHANCED POROSITY OBTAINED BY SOL-GEL METHOD

作者：Dascalescu Tiberiu; Todan Ligia^*; Rusu Adriana; Preda Silviu; Andronescu Cristian; Culita Daniela C; Munteanu Cornel; Zaharescu Maria

来源：Romanian Journal of Chemistry, 2014, 59(2): 125-134.

• Al2O3-TiO2 nanopowders
• sol-gel preparation
• microstructure
• specific surface area
• pore size distribution

Sol-gel process allows the synthesis of powders with a more elaborate structure and morphology, improving thus the reactivity of the synthesized material. Binary Oxide nanoparticles can have properties superior to those of the pure components. Oxides nanopowders in the Al2O3-TiO2 system have been mainly used as raw materials for advanced polycrystalline Al2TiO5 ceramics synthesis. However, Al2TiO5 based powders have also other applications as for example in petroleum hydro-treatments or as potential adsorbents in the decontamination of chemical warfare agents. In the present work Al2O3-TiO2 oxides were obtained by a sol-gel process and were characterized by thermogravimetric/differential thermal analysis, scanning electron microscopy, infrared spectroscopy, X-ray diffraction, BET specific surface area and porosity analysis. The obtained results were discussed comparatively with those obtained for the monocomponent oxides in order to establish new and better potential for their applications.

• 出版日期2014-2