Metal oxides nanoparticles on SBA-15: Efficient catalyst for methane combustion |
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Authors: | G Laugel J Arichi M Molire A Kiennemann F Garin B Louis |
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Affiliation: | aLaboratoire des Matériaux, Surfaces et Procédés pour la Catalyse, UMR 7515 du CNRS, 25 Rue Becquerel, 67087 Strasbourg, France;bGE Energy Products-Europe (GEEPE), 20 Avenue du Maréchal Juin, 9007 Belfort Cedex, France |
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Abstract: | Catalysts based on crystalline nanoparticles of Mn and Co metal oxides supported on mesoporous silica SBA-15 have been developed. These materials were characterized by XRD, BET and transmission electron microscopy (TEM) techniques. SBA-15 mesoporous silica was synthesized by a conventional sol–gel method using a tri-block copolymer as surfactant. Supported Mn3O4 and Co3O4 nanoparticles were obtained after calcination of as-impregnated SBA-15 by a metal salt precursor. The catalytic activity was evaluated in the combustion of methane at low concentration.Co3O4/SBA-15 (7 wt.%) exhibits the highest performance among the different oxides. Furthermore, this novel generation of catalysts appeared as active as conventional LaCoO3 perovskite, usually taken as reference for this reaction. Thanks to its organized meso-structures, SBA-15 material creates peculiar diffusion conditions for reactants and/or products. |
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Keywords: | Safety detector Methane combustion SBA-15 Co3O4 Mn3O4 Nanoparticles |
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