Artículo
Synthesis and characterization of Rh/MnO2-CeO2/Al2O3 catalysts for CO-PrOx reaction
Autor/es | Martínez Tejada, Leidy Marcela
Laguna Espitia, Oscar Hernando López Cartes, Carlos Centeno Gallego, Miguel Ángel |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2017 |
Fecha de depósito | 2018-03-22 |
Publicado en |
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Resumen | Rh/MnO2-CeO2/Al2O3 catalysts with different manganese-to-ceria ratios have been synthesized, characterized and tested in CO-PrOx reaction. The physicochemical properties of the solids were studied by XRD, Raman spectroscopy, ... Rh/MnO2-CeO2/Al2O3 catalysts with different manganese-to-ceria ratios have been synthesized, characterized and tested in CO-PrOx reaction. The physicochemical properties of the solids were studied by XRD, Raman spectroscopy, BET surface area, H2-TPR, TGA-DTG and TEM. The differences observed in the textural, structural and redox properties were related to the Mn-to-ceria ratio of the samples. The segregation of Mn species was observed at high Mn-to-Ce ratios. In opposite way, MnO2-CeO2 solid solutions were obtained at low Mn to Ce ones. In this last case, the physicochemical properties of the solids were favored by the intimate Rh-Ce-Mn contact. The effect of the Mn-Ce presence on Rh catalysts which promotes the catalytic behavior towards selective CO oxidation was observed to be better at low temperatures. At higher temperatures, Mn species promote the Reverse Water Gas Shift reaction, whilst ceria promotes the H2 oxidation in the whole range of working temperatures. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Identificador del proyecto | ENE2012- 37431-C03-03
TEP-8196 |
Cita | Martínez Tejada, L.M., Laguna Espitia, O.H., López Cartes, C. y Centeno Gallego, M.Á. (2017). Synthesis and characterization of Rh/MnO2-CeO2/Al2O3 catalysts for CO-PrOx reaction. Molecular Catalysis, 440, 9-18. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Synthesis and charatization 3.pdf | 204.5Kb | [PDF] | Ver/ | |
synthesis and characterization ... | 828.5Kb | [PDF] | Ver/ | |
Synthesis and Characterizatio 1.pdf | 785.3Kb | [PDF] | Ver/ | ``Artículo principal´´, ``tablas´´, ``figuras´´ |