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AgY zeolite as catalyst for the selective catalytic oxidation of NH3

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AgY zeolite as catalyst for the selective catalytic oxidation of NH3

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dc.contributor.author Martinez-Ortigosa, Joaquin es_ES
dc.contributor.author Lopes, Christian W. es_ES
dc.contributor.author Agostini, Giovanni es_ES
dc.contributor.author Palomares Gimeno, Antonio Eduardo es_ES
dc.contributor.author Blasco Lanzuela, Teresa es_ES
dc.contributor.author Rey Garcia, Fernando es_ES
dc.date.accessioned 2022-10-20T18:03:45Z
dc.date.available 2022-10-20T18:03:45Z
dc.date.issued 2021-08 es_ES
dc.identifier.issn 1387-1811 es_ES
dc.identifier.uri http://hdl.handle.net/10251/188452
dc.description.abstract [EN] Ag-exchanged Y zeolites (Si/Al = 2.5; Ag/Al = 0.30-0.95) have been tested in the NH3-SCO reaction, the most promising method for the elimination of ammonia emissions, and deeply characterized before and after reaction by using a variety of techniques (XRD, TEM, UV-Vis, Ag-109 NMR, XAS spectroscopies). The most active centres for the NH3-SCO reaction are Ag-0 nanoparticles (NPs) formed under reduction conditions and both activity and selectivity to N-2 increase with the silver loading. The Ag-0 NPs are dramatically modified under reaction conditions, being most of them dispersed resulting in small clusters and even atomically Ag+ cations, the latter accounting for around half silver atoms. The presence of water into the reaction feed promotes the dispersion and oxidation of silver nanoparticles, but the catalyst performance is only slightly affected. The results are fully consistent with the previously proposed i-SCR mechanism for NH3-SCO reaction on silver catalysts. es_ES
dc.description.sponsorship Financial support by the Ministerio de Ciencia e Innovacion (MICINN) of Spain through the Severo Ochoa (SEV-2016-0683) , RTI2018-101784-B-I00, RTI2018-09639-A-I00 and InnovaXN-26-2019 projects is gratefully acknowledged. The authors also thank the Microscopy Service of the Universitat Politecnica de Valencia for its assistance in microscopy characterization (TEM and FESEM equipment preparation) . C. W. Lopes (Science without Borders Process no. 13191/13-6) thanks CAPES for a predoctoral fellowship and J. Martinez-Ortigosa (SEV-2012-0267-02) is grateful to Severo Ochoa Program for a predoctoral fellowship. The authors also want to thank the ALBA synchrotron and CL AE SS beamline staff for providing beamtime (proposal 2017092477) and for setting the beamline up to perform these studies. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation info:eu-repo/grantAgreement/CAPES//13191%2F13-6/ es_ES
dc.relation info:eu-repo/grantAgreement/MCIU//SEV-2016-0683/ es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//SEV-2012-0267-02/ es_ES
dc.relation info:eu-repo/grantAgreement/AEI//RTI2018-096399-A-I00//CLUSTERES MULTIMETALICOS Y SUBNANOMETRICOS SOPORTADOS: SINTESIS, ESTRUCTURA Y DINAMISMO ATOMICO, Y EMPLEO COMO CATALIZADORES EN LA VALORIZACION DE METANO Y ALCANOS LIGEROS/ es_ES
dc.relation.ispartof Microporous and Mesoporous Materials es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Ag-containing zeolites es_ES
dc.subject Selective ammonia oxidation es_ES
dc.subject In situ XAS es_ES
dc.subject Ag-109 solid-state NMR es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title AgY zeolite as catalyst for the selective catalytic oxidation of NH3 es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.micromeso.2021.111230 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-101784-B-I00/ES/NUEVOS MATERIALES ZEOLITICOS PARA PROCESOS DE SEPARACION SELECTIVA DE GASES, APLICACIONES MEDIOAMBIENTALES Y CONSERVACION DE ALIMENTOS/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/847439/EU es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.description.bibliographicCitation Martinez-Ortigosa, J.; Lopes, CW.; Agostini, G.; Palomares Gimeno, AE.; Blasco Lanzuela, T.; Rey Garcia, F. (2021). AgY zeolite as catalyst for the selective catalytic oxidation of NH3. Microporous and Mesoporous Materials. 323:1-14. https://doi.org/10.1016/j.micromeso.2021.111230 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.micromeso.2021.111230 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 14 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 323 es_ES
dc.relation.pasarela S\463903 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Ministerio de Ciencia, Innovación y Universidades es_ES
dc.contributor.funder Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior, Brasil es_ES


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