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Cu-zeolite catalysts for NOx removal by selective catalytic reduction with NH3 and coupled to NO storage/reduction monolith in diesel engine exhaust aftertreatment systems

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Cu-zeolite catalysts for NOx removal by selective catalytic reduction with NH3 and coupled to NO storage/reduction monolith in diesel engine exhaust aftertreatment systems

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dc.contributor.author De-La-Torre, Unai es_ES
dc.contributor.author Pereda-Ayo, Benat es_ES
dc.contributor.author Moliner Marin, Manuel es_ES
dc.contributor.author González Velasco, Juan Ramón es_ES
dc.contributor.author Corma Canós, Avelino es_ES
dc.date.accessioned 2017-06-13T09:19:57Z
dc.date.available 2017-06-13T09:19:57Z
dc.date.issued 2016-06-15
dc.identifier.issn 0926-3373
dc.identifier.uri http://hdl.handle.net/10251/82714
dc.description.abstract [EN] Coupled NSR-SCR systems comprising a Pt-BaO/Al2O3 NSR monolith and Cu/CHA, Cu/ZSM-5 or Cu/BETA SCR catalysts are prepared and tested for NOx removal from diesel and lean burn engines exhaust gases. The Cu/zeolite catalysts are characterized by ICP-AES, XRD, N-2 adsorption-desorption, NH3-TPD and H-2-TPR. The physico-chemical characteristics of fresh catalysts and aged under 5% steam/Ar at 750 degrees C for 16 h and are compared, resulting in the Cu/CHA with much higher hydrothermal resistance to the loss of textural and structural properties. The single-SCR, single-NSR and coupled NSR-SCR catalytic performance is studied including the conversion of NO and NH3, slip of NH3, and N2O and NO2 yields. Cu/CHA presents the SCR wider temperature window, eventually 100%NO conversion from 220 to 380 degrees C, even maintained after severe aging. For application in the NSR-SCR technology, the NH3 generated in the NSR catalyst during the rich period is able to achieve higher NO conversion reducing significantly the slip of NH3 (negligible at 200 degrees C and above), very few amount of N2O at any temperature, and small production of NO2 only at higher temperatures. This improvement of activity and selectivity is particularly enhanced with the coupled NSR-Cu/CHA system, which is also maintained when the catalyst is deposited on the cordierite monolith substrate, as in the case of real application. (C) 2016 Published by Elsevier B.V. es_ES
dc.description.sponsorship The authors wish to acknowledge the financial support by the Spanish Economy and Competitiveness Ministry [CTQ2012-32899; MAT2012-3716, and "Severo Ochoa" (SEV 2012-0267)], the Basque Government (IT657-013), and the European Union (SynCat-Match project; ERC-AdG-2014-671093). One of the authors (UDLT) acknowledge to the Basque Government for the PhD Research Grant (BFI-2010-330). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Applied Catalysis B: Environmental es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Cu-zeolite es_ES
dc.subject Cu-chabazite es_ES
dc.subject SCR es_ES
dc.subject NSR-SCR es_ES
dc.subject NOx removal es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Cu-zeolite catalysts for NOx removal by selective catalytic reduction with NH3 and coupled to NO storage/reduction monolith in diesel engine exhaust aftertreatment systems es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.apcatb.2016.01.020
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2012-32899/ES/SISTEMAS CATALITICOS COMBINADOS NSR-SCR CON PRODUCCION INTERNA DE AMONIACO PARA LA ELIMINACION SELECTIVA DE NOX A N2 DE LOS GASES DE ESCAPE DE MOTORES DIESEL/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/671093/EU/MATching zeolite SYNthesis with CATalytic activity/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//SEV-2012-0267/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/Eusko Jaurlaritza//IT657-013/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/Eusko Jaurlaritza//BFI-2010-330/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2012-37160/ES/SINTESIS DE NUEVOS MATERIALES MICROPOROSOS BASADOS EN EL USO DE ESPONJAS DE PROTONES COMO AGENTES DIRECTORES DE ESTRUCTURA (ADES)/
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation De-La-Torre, U.; Pereda-Ayo, B.; Moliner Marin, M.; González Velasco, JR.; Corma Canós, A. (2016). Cu-zeolite catalysts for NOx removal by selective catalytic reduction with NH3 and coupled to NO storage/reduction monolith in diesel engine exhaust aftertreatment systems. Applied Catalysis B: Environmental. 187:419-427. https://doi.org/10.1016/j.apcatb.2016.01.020 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.apcatb.2016.01.020 es_ES
dc.description.upvformatpinicio 419 es_ES
dc.description.upvformatpfin 427 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 187 es_ES
dc.relation.senia 328465 es_ES
dc.identifier.eissn 1873-3883
dc.contributor.funder European Commission
dc.contributor.funder Ministerio de Economía y Competitividad
dc.contributor.funder Gobierno Vasco/Eusko Jaurlaritza


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