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Study of the interaction between components in hybrid CuZnAl/HZSM-5 catalysts and its impact in the syngas-to-DME reaction

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Study of the interaction between components in hybrid CuZnAl/HZSM-5 catalysts and its impact in the syngas-to-DME reaction

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dc.contributor.author García Trenco, Andrés es_ES
dc.contributor.author Vidal Moya, José Alejandro es_ES
dc.contributor.author Martinez Feliu, Agustin es_ES
dc.date.accessioned 2016-09-14T08:15:35Z
dc.date.available 2016-09-14T08:15:35Z
dc.date.issued 2012-01-05
dc.identifier.issn 0920-5861
dc.identifier.uri http://hdl.handle.net/10251/69414
dc.description.abstract [EN] Hybrid CuZnAl(CZA)/HZSM-5 catalysts were prepared by three mixing methods in order to analyze the possible existence of interactions between components and their impact in the STD process, namely: (a) grinding of powders prior to pelletizing (grinding method), (b) slurrying the two solids in water followed by drying and pelletizing (slurry method), and (c) physical mixture of pre-pelletized components. The materials were characterized by ICP-OES, XRD, N-2 physisorption, H-2-TPR, Al-27 MAS NMR, FTIR-pyridine, and EPR spectroscopy. Detrimental interactions producing a drastic reduction in the amount of available zeolitic Bronsted acid sites were observed for the hybrids prepared by slurry and grinding methods. Such interactions involved, on one hand, the partial blockage of micropores by CZA particles and, on the other hand, an inter-cationic exchange of Cu2+ (and possibly also Zn2+) species. The presence of isolated Cu2+ cations occupying exchange positions in the HZSM-5 zeolite was unambiguously evidenced by EPR spectroscopy. The decrease in Bronsted acidity significantly reduced the activity of the zeolite for dehydrating methanol leading to a much lower efficiency of the corresponding hybrids for DME synthesis at typical STD conditions as compared to the catalyst obtained by simple mixture of pre-pelletized components. (C) 2011 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship Financial support by the Comision Interministerial de Ciencia y Tecnologia (CICYT) of Spain through the Project CTQ2010-17988/PPQ is gratefully acknowledged. A. Garcia-Trenco thanks the Ministerio de Ciencia e Innovacion (MICINN) of Spain for a predoctoral (FPI) scholarship.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Catalysis Today es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Synthesis gas es_ES
dc.subject Methanol dehydration es_ES
dc.subject Dimethyl ether es_ES
dc.subject Hybrid catalysts es_ES
dc.subject CuZnAl es_ES
dc.subject ZSM-5 zeolite es_ES
dc.subject Detrimental interactions es_ES
dc.subject EPR spectroscopy es_ES
dc.title Study of the interaction between components in hybrid CuZnAl/HZSM-5 catalysts and its impact in the syngas-to-DME reaction es_ES
dc.type Artículo es_ES
dc.type Comunicación en congreso
dc.identifier.doi 10.1016/j.cattod.2011.06.034
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//CTQ2010-17988/ES/CATALIZADORES AVANZADOS PARA LA CONVERSION DE GAS DE SINTESIS EN COMBUSTIBLES/ es_ES
dc.rights.accessRights Cerrado 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 García Trenco, A.; Vidal Moya, JA.; Martinez Feliu, A. (2012). Study of the interaction between components in hybrid CuZnAl/HZSM-5 catalysts and its impact in the syngas-to-DME reaction. Catalysis Today. 179(1):43-51. https://doi.org/10.1016/j.cattod.2011.06.034 es_ES
dc.description.accrualMethod S es_ES
dc.relation.conferencename 4th Czech-Italian-Spanish (CIS) workshop on Molecular Sieves and Catalysis
dc.relation.conferencedate June 15-18, 2011
dc.relation.conferenceplace Liblice Castle, Czech Republique
dc.relation.publisherversion http://dx.doi.org/10.1016/j.cattod.2011.06.034 es_ES
dc.description.upvformatpinicio 43 es_ES
dc.description.upvformatpfin 51 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 179 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 214918 es_ES
dc.contributor.funder Ministerio de Ciencia e Innovación


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