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O tolueno e um composto orgânico muito toxico utilizado para a preparacao de muitos outros compostos. A fotoxidacao do tolueno em fase liquida foi realizada utilizando-se amostras policristalinas do TiO 2 dopado com oxidos de metais de transicao, contendo diferentes fases de dioxido de titânio conhecidas como anatase, rutilo e a mistura de anatase e rutilo. O objetivo principal desse estudo foi investigar a conversao de tolueno a acido benzoico e como cada fase modificada do TiO 2 afeta a velocidade da reacao. As diferentes fases foram caracterizadas com base em difracao de Raios X. Outros metodos, tais como, analises quimicas, medidas de area de superficies e calculo do tamanho do cristal tambem foram utilizados para a caracterizacao das amostras. A fase da anatase dopada com metais de transicao gerou maior rendimento do que a do rutilo dopado. A mistura de anatase e rutilo nao apresentou efeito significativo. Toluene is a very noxious organic compound used for the preparation of many compounds. Liquid phase photo-oxidation of toluene was carried out using poly crystalline samples of transition metal oxide doped TiO 2 containing different phases of titania, namely anatase, rutile and mixture of anatase and rutile. The main objective was to find out the conversion of toluene to benzoic acid and how the phase modification of doped TiO 2 affects the reaction rate. The different phases of TiO 2 were determined using powder X-ray diffraction. Other methods such as chemical analysis, Surface area measurements and Crystallite size calculation were also used for the characterization of the samples. Anatase doped with transition metal oxides gives higher yield than doped rutile. Mixture of anatase and rutile has no significant effect.

Liquid phase photooxidation of toluene in the presence of transition metal oxide doped titania