Artículo
Upgrading the PtCu intermetallic compounds: The role of Pt and Cu in the alloy
Autor/es | Castillo, R.
Domínguez García, Elizabeth Santos, José Luis Centeno, Miguel Ángel Romero Sarria, Francisca Daturi, Marco Odriozola Gordón, José Antonio |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2020-10-01 |
Fecha de depósito | 2023-09-18 |
Publicado en |
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Resumen | This work is devoted to the study of the role of both metals in the intermetallic PtxCuy/ γ Al2O3 catalysts commonly employed in CO-PROX reaction. Therefore, monometallic Pt and Cu based catalysts and PtCu intermetallic ... This work is devoted to the study of the role of both metals in the intermetallic PtxCuy/ γ Al2O3 catalysts commonly employed in CO-PROX reaction. Therefore, monometallic Pt and Cu based catalysts and PtCu intermetallic compound with different molar ratios (Pt3Cu1 and Pt1Cu3) supported catalysts were carefully synthesized and deeply characterized. Room temperature CO adsorptions by FTIR spectroscopy were carried out on the mono- and intermetallic catalysts being the monometallic catalyst determinant for the study. From the analysis of the nature of the platinum surface in Pt/ γ Al2O3, we have demonstrated that the role of Pt sites is based in the CO dissociation for the CO2 formation and also how the platinum surface is partially blocked by leftovers from the synthesis. Moreover, the study of the Cu/ γ Al2O3 and the bimetallic catalysts PtxCuy/ γ Al2O3 allowed elucidating the effect of the copper in the metallic site and support interphase as well as the role of copper in the hydrocarbon oxidation. © 2019 Elsevier B.V. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | ENE2013-47880-C3-2-R |
Cita | Castillo, R., Domínguez García, E., Santos, J.L., Centeno, M.Á., Romero Sarria, F., Daturi, M. y Odriozola Gordón, J.A. (2020). Upgrading the PtCu intermetallic compounds: The role of Pt and Cu in the alloy. Catalysis Today, 356, 390-398. https://doi.org/10.1016/j.cattod.2019.11.026. |
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