CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
congresos y reuniones científicas
Preparation of functionalized Clays as supports of polyoxomolybdates and their application in diphenylsulfide selective oxidation
BEN TAYEB, KARIMA; MUÑOZ, MERCEDES; CABELLO, CARMEN I.; ROMANELLI, GUSTAVO; BOTTO, IRMA L.; VAZQUEZ, PATRICIA; CAPRON, MICKAEL; LAMONIER, CAROLE; PAYEN, EDMOND
Congreso; 6th World Congress on Oxidation Catalysis. Lille, Francia; 2009
Unité de Catalyse et Chimie du Solide (UCCS) UMR CNRS 8181, Université des Sciences et Technologies
Clays were modified chemically to obtain pillared, PILCs and porous heterostructured clays, PCHs. These species were functionalized with aminosiliceous agents in order to produce surfaces for the adsorption of polyoxomolybdates. Several catalysts were prepared by impregnation in equilibrium of modified clays with [Mo7O24]6- and [AlMo6O24H6]3- (12-13 mg Mo/ml). Functionalized and impregnated species present 13-14% of adsorbed Mo, while materials without treatment present only 1% of Moad. Materials were studied in a clean selective oxidation of diphenylsulfide to sulfone in batch. Mo-rich systems were the most active catalysts with conversions of 100% and sulfone selectivities higher than 90%.