Different series of iron supported catalysts containing 10wt.% of iron, as oxide, on TiO2 and Al2O3 have been prepared by the sol gel method and the traditional method based on the impregnation of the support with the metal precursor on commercial and sol-gel supports. The calcined solids were characterised by evaluating the specific surface area and porosity by nitrogen adsorption at 77 K, TPR, TPD of ammonia, X-ray diffraction, evaluation of band gap and isolelectric point by electrophoretic migration. Fe3+ ions in two situations were found, highly dispersed in which Fe3+ ions were placed in the network of the support and large Fe2O3 Crystals were located on the surface catalysts. The catalytic activity of the prepared catalysts was measured in a batch reactor using ozone/UV as oxidizing agent. The catalysts displayed significant differences in initial reaction rate being the iron titania systems more active, specially when a higher extent of surface iron oxide species is present. After two hours on stream the conversion levels are similar in all the studied systems.
CITATION STYLE
Pecchi, G., Reyes, P., & Villaseñor, J. (2003). Phenol Degradation and Photodegradation Using O3/UV by Fe2O3 Supported on A12O3 and TiO2 prepared by Sol-Gel Method. In Emerging Fields in Sol-Gel Science and Technology (pp. 49–58). Springer US. https://doi.org/10.1007/978-1-4615-0449-8_5
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