CuH-ZSM-5 as Hydrocarbon Trap under Cold Start Conditions
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Título: | CuH-ZSM-5 as Hydrocarbon Trap under Cold Start Conditions |
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Autor/es: | Navlani-García, Miriam | Puértolas Lacambra, Begoña | Lozano-Castello, Dolores | Cazorla-Amorós, Diego | Navarro, María Victoria | García Martínez, Tomás |
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: | CuH-ZSM-5 | Hydrocarbon trap | Cold start conditions |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 1-may-2013 |
Editor: | American Chemical Society |
Cita bibliográfica: | Environmental Science & Technology. 2013, 47(11): 5851-5857. doi:10.1021/es304880b |
Resumen: | Cold start tests are carried out to evaluate the performance of copper-exchanged zeolites as hydrocarbon traps under simulated gasoline car exhaust gases, paying special attention to the role of copper in the performance of these zeolites. It is concluded that the partial substitution of the protons in the parent H-ZSM-5 zeolite is highly beneficial for hydrocarbon trapping due to the formation of selective adsorption sites with specific affinity for the different exhaust components. However, it is also observed that uncontrolled exchanging process conditions could lead to the presence of CuO nanoparticles in the zeolite surface, which seem to block the pore structure of the zeolite, decreasing the hydrocarbon trap efficiency. Among all the zeolites studied, the results point out that a CuH-ZSM-5 with a partial substitution of extra-framework protons by copper cations and without any detectable surface CuO nanoparticles is the zeolite that showed the best performance under simulated cold start conditions due to both the high stability and the hydrocarbon retaining capacity of this sample during the consecutive cycles. |
URI: | http://hdl.handle.net/10045/40177 |
ISSN: | 0013-936X (Print) | 1520-5851 (Online) |
DOI: | 10.1021/es304880b |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2013 American Chemical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1021/es304880b |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2013_Navlani_etal_ES&T_final.pdf | Versión final (acceso restringido) | 1,05 MB | Adobe PDF | Abrir Solicitar una copia |
2013_Navlani_etal_ES&T.pdf | Versión revisada (acceso abierto) | 648,09 kB | Adobe PDF | Abrir Vista previa |
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