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Hydrogen separation in La5.5WO11.25-delta membranes

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Hydrogen separation in La5.5WO11.25-delta membranes

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dc.contributor.author Escolástico Rozalén, Sonia es_ES
dc.contributor.author Solis Díaz, Cecilia es_ES
dc.contributor.author Scherb, Tobias es_ES
dc.contributor.author Schumacher, Gerhard es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2017-01-11T11:10:36Z
dc.date.available 2017-01-11T11:10:36Z
dc.date.issued 2013-10-01
dc.identifier.issn 0376-7388
dc.identifier.uri http://hdl.handle.net/10251/76636
dc.description.abstract Tungstates Ln(6)WO(12) are proton conducting crystalline materials which show significant mixed protonic and electronic conductivity and stability in moist CO2 environments. These materials are promising candidates for hydrogen separation membranes at temperatures above 700 degrees C, especially when integrated in intensified processes as catalytic membrane reactors. From this family of compounds, La6-x WOy (0.4 < x < 0.7) presents the highest protonic conductivity and hydrogen permeability. This contribution presents the preparation, hydrogen permeation and stability study of La5.5WO11.25-delta membranes. Hydrogen separation properties of La5.5WO11.25-delta were systematically analyzed, i.e. the influence of the H-2 concentration in feed stream, humidification degree and operating temperature were investigated. The integrity of the La5.5WO11.25-delta after the hydrogen permeation experiments was confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. The stability of La5.5WO11.25-delta, permeation when CO2 containing atmosphere was used as sweep gas was evaluated. Furthermore, the stability of this compound in CO2-rich and sulfur-containing environments was confirmed by XRD. (C) 2013 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship Financial support by the Spanish Government (Grants JAE-Pre 08-0058, ENE2011-24761, CSD-2009-0050 and SEV-2012-0267) and the Helmholtz Association of German Research Centers through the portfolio topic MEM-BRAIN is kindly acknowledged. The authors are indebted to S. Jimenez for sample preparation. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Government JAE-Pre 08-0058 es_ES
dc.relation Spanish Government ENE2011-24761 es_ES
dc.relation Spanish Government CSD-2009-0050 es_ES
dc.relation Spanish Government SEV-2012-0267 es_ES
dc.relation Helmholtz Association of German Research Centers through the portfolio topic MEM-BRAIN es_ES
dc.relation.ispartof Journal of Membrane Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Hydrogen membrane es_ES
dc.subject Proton conductor es_ES
dc.subject Lanthanum tungstate es_ES
dc.subject CO2 stable es_ES
dc.subject Mixed conductor es_ES
dc.title Hydrogen separation in La5.5WO11.25-delta membranes es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.memsci.2013.05.005
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 Escolástico Rozalén, S.; Solis Díaz, C.; Scherb, T.; Schumacher, G.; Serra Alfaro, JM. (2013). Hydrogen separation in La5.5WO11.25-delta membranes. Journal of Membrane Science. 444:276-284. doi:10.1016/j.memsci.2013.05.005 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.memsci.2013.05.005 es_ES
dc.description.upvformatpinicio 276 es_ES
dc.description.upvformatpfin 284 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 444 es_ES
dc.relation.senia 245905 es_ES


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