BETA Zeolite Thin Films Supported on Honeycomb Monoliths with Tunable Properties as Hydrocarbon Traps under Cold-Start Conditions

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Title: BETA Zeolite Thin Films Supported on Honeycomb Monoliths with Tunable Properties as Hydrocarbon Traps under Cold-Start Conditions
Authors: Navlani-García, Miriam | Varela Gandía, Francisco José | Bueno López, Agustín | Cazorla-Amorós, Diego | Puértolas Lacambra, Begoña | López, José Manuel | García Martínez, Tomás | Lozano-Castello, Dolores
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: Cold start conditions | Honeycomb monoliths | Hydrocarbons | Thin films | Zeolites
Knowledge Area: Química Inorgánica
Issue Date: Aug-2013
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Citation: ChemSusChem. 2013, 6(8): 1467-1477. doi:10.1002/cssc.201300215
Abstract: A high percentage of hydrocarbon (HC) emissions from gasoline vehicles occur during the cold-start period. Among the alternatives proposed to reduce these HC emissions, the use of zeolites before the three-way catalyst (TWC) is thought to be very effective. Zeolites are the preferred adsorbents for this application; however, to avoid high pressure drops, supported zeolites are needed. In this work, two coating methods (dip-coating and in situ crystallization) are optimized to prepare BETA zeolite thin films supported on honeycomb monoliths with tunable properties. The important effect of the density of the thin film in the final performance as a HC trap is demonstrated. A highly effective HC trap is prepared showing 100 % toluene retention, accomplishing the desired performance as a HC trap, desorbing propene at temperatures close to 300 °C, and remaining stable after cycling. The use of this material before the TWC is very promising, and works towards achieving the sustainability and environmental protection goals.
Sponsor: The authors would like to thank the Ministerio de Economía y Competitividad and FEDER (CTQ2012/31762) as well as Generalitat Valenciana and FEDER (PROMETEO/2009/047) for financial support. M.N.G. and F.J.V.G. thank the University of Alicante for the PhD studentship. B.P. thanks the Ministry of Education of Spain for the PhD fellowship (grant no. AP2009-3544), and J.M.L. thanks the MICYT for his “Ramón y Cajal” contract (ref. RYC-2009-04483).
ISSN: 1864-5631 (Print) | 1864-564X (Online)
DOI: 10.1002/cssc.201300215
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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