%0 Journal Article
%T Preparaci¨®n y caracterizaci¨®n de ¨®xidos mixtos nanoestructurados soportados sobre MgO
%A Claudio Lugo
%A Edder Garcia
%A Jairo Rond¨®n
%A Hildemaro Melendez
%J Avances en Qu¨ªmica
%D 2010
%I Universidad de los Andes
%X Mixed oxide catalysts of Co, Ni, Cu and Mn supported on MgO were synthesized using two different methods to obtain nanoparticles: the combustion method with urea and the sol-gel modified with citric acid. Different techniques were used to determine their physicochemical properties. X-ray diffraction (XRD), the N2 physisorption by BET method, the temperature programmed reduction (TPR-H2), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX). The results show particle sizes between 5 and 31nm in diameter for solid preparations. Co and Mn show changes in their oxidation states.
%K nanoparticles
%K oxides mixed
%K MgO
%U http://www.saber.ula.ve/bitstream/123456789/31056/1/articulo4.pdf