CuH-ZSM-5 as Hydrocarbon Trap under Cold Start Conditions

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Title: CuH-ZSM-5 as Hydrocarbon Trap under Cold Start Conditions
Authors: Navlani-García, Miriam | Puértolas Lacambra, Begoña | Lozano-Castello, Dolores | Cazorla-Amorós, Diego | Navarro, María Victoria | García Martínez, Tomás
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: CuH-ZSM-5 | Hydrocarbon trap | Cold start conditions
Knowledge Area: Química Inorgánica
Issue Date: 1-May-2013
Publisher: American Chemical Society
Citation: Environmental Science & Technology. 2013, 47(11): 5851-5857. doi:10.1021/es304880b
Abstract: 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.
ISSN: 0013-936X (Print) | 1520-5851 (Online)
DOI: 10.1021/es304880b
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 American Chemical Society
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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