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Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites

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Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites

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dc.contributor.author Liu, Lichen es_ES
dc.contributor.author Lopez-Haro, Miguel es_ES
dc.contributor.author Wittee Lopes, Christian es_ES
dc.contributor.author MEIRA, DEBORA M. es_ES
dc.contributor.author Concepción Heydorn, Patricia es_ES
dc.contributor.author Calvino, José J. es_ES
dc.contributor.author Corma Canós, Avelino es_ES
dc.date.accessioned 2021-04-30T03:31:24Z
dc.date.available 2021-04-30T03:31:24Z
dc.date.issued 2020-11 es_ES
dc.identifier.issn 0021-9517 es_ES
dc.identifier.uri http://hdl.handle.net/10251/165799
dc.description.abstract [EN] To achieve high-loading of stable subnanometric metal clusters on solid carriers is a challenge since those small metal clusters have strong tendency to sinter into larger nanoparticles. Development of facile synthesis methodologies to obtain subnanometric metal catalysts with high metal loading and high stability against sintering at high temperature (>500 degrees C) in reductive atmosphere (such as H-2) is critical for the practical applications. In this work, we will present and discuss the generation of high-loading (similar to 1.4 wt%) subnanometric Pt clusters confined in the sinusoidal channels of MFI zeolite, on the basis of the atomic-level understanding on the evolution of Pt and Sn species during high-temperature oxidation-reduction treatments. It will be shown that the structural evolution of Pt and Sn species is dependent on the post-synthesis treatments. The Pt particles on the external surface can disintegrate into subnanometric Pt species and get stabilized in the zeolite channels during high-temperature calcination in air while Sn species migrate from surface region to internal region during high-temperature reduction treatment at 650 degrees C. The resultant material containing bimetallic PtSn clusters confined in the 10MR sinusoidal channels of the purely siliceous MFI zeolite show excellent catalytic activity and stability, as demonstrated for dehydrogenation of light alkanes at high reaction temperature. (C) 2020 Elsevier Inc. All rights reserved. es_ES
dc.description.sponsorship This work has been supported by the European Union through the European Research Council (grant ERC-AdG-2014-671093, SynCatMatch) and the Spanish government through the "Severo Ochoa Program"(SEV-2016-0683). The authors also thank Microscopy Service of UPV for the TEM and STEM measurements. The XAS measurements were carried out in CLAESS beamline of ALBA synchrotron and BM23 beamline at ESRF synchrotron. The kind supports from the scientific staffs in ALBA and ESRF are greatly appreciated. High-resolution STEM measurements were performed at DME-UCA node of ELECMI in Cadiz University, with financial support from FEDER/MINECO (MAT2017-87579-R and MAT2016-81118-P). C.W.L. thanks CAPES (Science without Frontiers Process no. 13191/13-6) for a predoctoral fellowship. Financial support on this work from ExxonMobil is greatly acknowledged. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation CAPES/13191/13-6 es_ES
dc.relation MCIU/SEV-2016-0683 es_ES
dc.relation MINECO/MAT2017-87579-R es_ES
dc.relation MINECO/MAT2016-81118-P es_ES
dc.relation.ispartof Journal of Catalysis es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Metal clusters es_ES
dc.subject Isolated atoms es_ES
dc.subject Pt es_ES
dc.subject MFI zeolite es_ES
dc.subject Propane dehydrogenation es_ES
dc.subject Structural evolution es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jcat.2020.07.035 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/671093/EU/MATching zeolite SYNthesis with CATalytic activity/ es_ES
dc.rights.accessRights Embargado es_ES
dc.date.embargoEndDate 2022-08-12 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química 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 Liu, L.; Lopez-Haro, M.; Wittee Lopes, C.; Meira, DM.; Concepción Heydorn, P.; Calvino, JJ.; Corma Canós, A. (2020). Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites. Journal of Catalysis. 391:11-24. https://doi.org/10.1016/j.jcat.2020.07.035 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.jcat.2020.07.035 es_ES
dc.description.upvformatpinicio 11 es_ES
dc.description.upvformatpfin 24 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 391 es_ES
dc.relation.pasarela S\433269 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder European Regional Development Fund 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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