%0 Journal Article
%T Oxidaci車n H迆meda de Fenoles con Catalizadores Fe-CeO2, K-MnO2/ CeO2/Paligorsquita y Fe/ Paligorsquita Wet Oxidation of Phenols using Fe-CeO2, K-MnO2/ CeO2/Paligorskite and Fe/ Palygorskite Catalysts
%A Santiago A. F Junior
%A Joˋo F de Sousa
%A Monhad Benachour
%A L. O. A Rojas
%J Informaci車n Tecnol車gica
%D 2011
%I Centro de Informaci車n Tecnol車gica
%X Se ha evaluado el funcionamiento de catalizadores Fe-MnO2/CeO2, K-MnO2/CeO2/Paligorsquita y Fe/Paligorsquita en la degradaci車n oxidativa h迆meda del fenol en un reactor de mezcla. Los experimentos se ejecutaron a: temperatura de 130o C, presi車n de 20.4 atm., concentraci車n m芍sica del catalizador de 5 g/L y concentraci車n inicial del fenol de 0,5 g/L Los par芍metros evaluados fueron: contenido de hierro impregnado (0, 3; 7 y 10%, m/m) y el pH inicial del medio reactivo (3.1; 6.8 y 8.7). Las curvas de degradaci車n del fenol indican que el catalizador Fe+2/Paligorsquita tiene un papel preponderante en la conversi車n de carbono org芍nico total comparado con los dem芍s catalizadores. Se encontr車 tambi谷n que la disminuci車n de la alcalinidad del medio reactivo favorece la conversi車n de fenol y que el soporte paligorsquita parece ser m芍s resistente a la acci車n de los compuestos 芍cidos formados durante la reacci車n. The performance of Fe-MnO2/CeO2, K-MnO2/CeO2/ Palygorskite and Fe/ Palygorskite catalysts during the wet oxidative degradation of phenol in a stirred reactor has been evaluated. The experiments were run at 130∼C, 20.4 atm., and with an initial phenol and catalyst mass concentration of 0.5 g/L and 5 g/L, respectively. The influence of iron loaded on the support (0, 3; 7 and 10%, m/m) and the initial pH of the reactant medium (3.1; 6.8; 8.7) were studied. The phenol degradation curves showed that the Fe+2//Palygorskite catalyst had the best performance toward the organic carbon conversion compared to the other catalysts. It was also found that by lowering the alkalinity of the reacting media favoured the phenol conversion and that the Palygorskite support showed higher resistance to the actions of the acids formed during the reaction.
%K fenol
%K catalizadores de hierro
%K paligorsquita
%K caracterizaci車n
%K oxidaci車n h迆meda
%K phenol
%K iron catalysts
%K palygorskite
%K characterization
%K wet oxidation
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-07642011000300008