Evaluation of Pr2Zr2-xCexO7±δ pyrochlores as a potential Cu support catalysts for CO oxidation in simulated GDI conditions
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Título: | Evaluation of Pr2Zr2-xCexO7±δ pyrochlores as a potential Cu support catalysts for CO oxidation in simulated GDI conditions |
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Autor/es: | Veiga, Emerson Luiz dos Santos | Díaz Verde, Álvaro | Illán-Gómez, María José | Beltrán-Mira, Héctor | Cordoncillo, Eloísa |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Pyrochlores | Copper | CO oxidation | Gasoline Direct Injection (GDI) engines |
Fecha de publicación: | 7-oct-2023 |
Editor: | Elsevier |
Cita bibliográfica: | Applied Catalysis B: Environmental. 2023, 342: 123371. https://doi.org/10.1016/j.apcatb.2023.123371 |
Resumen: | This study evaluates the catalytic activity, both as bulk catalysts and as supports for copper catalysts for CO oxidation in a simulated Gasoline Direct Injection Engine (GDI) of two pyrochlores: Pr2Zr2O7 (PZ) and Pr2Zr1.9Ce0.1O7±δ (PZC). These pyrochlores were synthesized by the solvothermal method. XRD, FE-SEM, HR-TEM, XPS, H2-TPR, and O2-TPD characterization techniques were employed to determine the structural, microstructural, and redox properties of the samples. All materials exhibited high catalytic activity for CO oxidation, with Cu-PZC showing the best performance, which is comparable to that of a 1% Pt/Al2O3 commercial catalyst used as a reference. Thus, the synthesized solids could be a promising and cost-effective alternative to noble metal-based catalysts used to control GDI exhaust gas composition. |
Patrocinador/es: | H.B-M, E.C. and E.L.S.V. thank the Spanish Government (Ministerio de Ciencia e Innovación, Project PID2020-116149GB-I00) for the financial support. E.L.S.V thanks the Generalitat Valenciana for the predoctoral contract (GRISOLIA/2019/054) and for the financial support for the international stay (CIBEFP/2021/22). A.D-V and MJ.I-G thank the Spanish Government (Ministerio de Ciencia e Innovación, Project PID2019-105542RB-I00), the European Union (FEDER Funds) and the Regional Government (Generalitat Valenciana, Project CIPROM/2021-070) for the financial support. A.D-V thanks the University of Alicante the financial support for the predoctoral contract. |
URI: | http://hdl.handle.net/10045/137866 |
ISSN: | 0926-3373 (Print) | 1873-3883 (Online) |
DOI: | 10.1016/j.apcatb.2023.123371 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.apcatb.2023.123371 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Veiga_etal_2023_ApplCatalB_accepted.pdf | Embargo 24 meses (acceso abierto: 8 oct. 2025) | 990,2 kB | Adobe PDF | Abrir Solicitar una copia |
Veiga_etal_2023_ApplCatalB_final.pdf | Versión final (acceso restringido) | 14,29 MB | Adobe PDF | Abrir Solicitar una copia |
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