Optimizing the performance of catalytic traps for hydrocarbon abatement during the cold-start of a gasoline engine

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Título: Optimizing the performance of catalytic traps for hydrocarbon abatement during the cold-start of a gasoline engine
Autor/es: Puértolas Lacambra, Begoña | Navlani-García, Miriam | García Martínez, Tomás | Navarro, María Victoria | Lozano-Castello, Dolores | Cazorla-Amorós, Diego
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: Catalytic traps | Factorial design | Cold-start emissions | Cu-ZSM-5
Área/s de conocimiento: Química Inorgánica
Fecha de publicación: 30-ago-2014
Editor: Elsevier
Cita bibliográfica: Journal of Hazardous Materials. 2014, 279: 527-536. doi:10.1016/j.jhazmat.2014.07.042
Resumen: A key target to reduce current hydrocarbon emissions from vehicular exhaust is to improve their abatement under cold-start conditions. Herein, we demonstrate the potential of factorial analysis to design a highly efficient catalytic trap. The impact of the synthesis conditions on the preparation of copper-loaded ZSM-5 is clearly revealed by XRD, N2 sorption, FTIR, NH3-TPD, SEM and TEM. A high concentration of copper nitrate precursor in the synthesis improves the removal of hydrocarbons, providing both strong adsorption sites for hydrocarbon retention at low temperature and copper oxide nanoparticles for full hydrocarbon catalytic combustion at high temperature. The use of copper acetate precursor leads to a more homogeneous dispersion of copper oxide nanoparticles also providing enough catalytic sites for the total oxidation of hydrocarbons released from the adsorption sites, although lower copper loadings are achieved. Thus, synthesis conditions leading to high copper loadings jointly with highly dispersed copper oxide nanoparticles would result in an exceptional catalytic trap able to reach superior hydrocarbon abatement under highly demanding operational conditions.
Patrocinador/es: The authors would like to thank MINECO and FEDER (CTQ2012/31762 and CTQ2012-37984-C02-01) for financial support. B.P. thanks the Spanish Ministry of Education (FPU studentship AP2009-3544). M.N.G. thanks the University of Alicante for the PhD studentship.
URI: http://hdl.handle.net/10045/44752
ISSN: 0304-3894 (Print) | 1873-3336 (Online)
DOI: 10.1016/j.jhazmat.2014.07.042
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2014 Elsevier B.V.
Revisión científica: si
Versión del editor: http://dx.doi.org/10.1016/j.jhazmat.2014.07.042
Aparece en las colecciones:INV - MCMA - Artículos de Revistas

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