Preparación y caracterización de óxidos mixtos nanoestructurados soportados sobre MgO

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...

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Bibliographic Details
Published in:Avances en Química
Main Authors: Jairo Rondón, Edder Garcia, Claudio Lugo, Héctor Del Castillo, Patricia Pérez, Hildemaro Melendez
Format: Article
Language:English
Published: Universidad de Los Andes 2010-05-01
Subjects:
nanoparticles
oxides mixed
MgO
Online Access:http://www.saber.ula.ve/bitstream/123456789/31056/1/articulo4.pdf
Description
Summary: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.
ISSN:1856-5301

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