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dc.contributor.author | Escolástico Rozalén, Sonia | es_ES |
dc.contributor.author | Solis Díaz, Cecilia | es_ES |
dc.contributor.author | Kjolseth, C. | es_ES |
dc.contributor.author | Serra Alfaro, José Manuel | es_ES |
dc.date.accessioned | 2016-09-28T07:29:55Z | |
dc.date.available | 2016-09-28T07:29:55Z | |
dc.date.issued | 2014-11 | |
dc.identifier.issn | 1754-5692 | |
dc.identifier.uri | http://hdl.handle.net/10251/70543 | |
dc.description.abstract | [EN] Mixed electronic-and protonic-conducting composites made up of physical mixtures of La5.5WO11.25-delta-La0.87Sr0.13CrO3-delta (LWO-LSC) have been evaluated as H-2 separation membranes for operation at temperatures greater than 550 degrees C. The mixture of these two ion-conducting phases led to non-linear synergetic effects; i.e. unexpected enhancement of the total conductivity and well-balanced ambipolar conductivity, resulting in appealing H-2 permeation fluxes through robust ceramic membranes. The preparation, primary characterization, H-2 permeation and stability studies of various composites is presented. Mixing LWO and LSC phases makes it possible (1) to improve the LSC sintering behavior and to achieve very high membrane densities and (2) to obtain compounds with high total conductivity, higher than that shown for LWO and LSC, separately. The highest permeation rate is achieved for the 50 vol%-LWO-LSC membrane, though other composite compositions showed higher total conductivity. Moreover, the influence on the H-2 permeation of the composite composition, the humidification of gas streams, temperature and the use of various catalytic coatings on the membrane surface is evaluated. The nature of the transport mechanism is investigated by the permeation studies using deuterium tracers. The H-2 permeation rates reported in this investigation for a 370 mu m thick 50 vol%-LWO-LSC membrane, e.g. 0.15 mL min(-1) cm(-2) at 700 degrees C, are the highest reported values, up to date, for any bulk mixed protonic-electronic membranes. The H-2 permeation magnitude achieved at moderate temperatures along with the proven stability in CO2-rich atmospheres are firm steps towards the future application of this type of membrane for industrial processes. | es_ES |
dc.description.sponsorship | Financial support by the Spanish government (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. Protia acknowledges financial support from the Research Council of Norway (RCN) under the Gassmaks program ICOR (201418). The authors are indebted to M. Fabuel for sample preparation. The support of the Servicio de Microscopia Electronica of the Universidad Politecnica de Valencia is also acknowledged. | |
dc.language | Inglés | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation.ispartof | Energy and Environmental Science | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Electron Microscopy Service of the UPV | |
dc.title | Outstanding hydrogen permeation through CO2-stable dual phase ceramic membranes | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1039/C4EE02066A | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//ENE2011-24761/ES/DESARROLLO DE NUEVOS DISPOSITIVOS IONICOS PARA LA PRODUCCION EFICIENTE Y SOSTENIBLE DE ENERGIA Y PRODUCTOS QUIMICOS%2FCOMBUSTIBLES/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CSD2009-00050/ES/Desarrollo de catalizadores más eficientes para el diseño de procesos químicos sostenibles y produccion limpia de energia/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN//201418/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//SEV-2012-0267/ | 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 | Escolástico Rozalén, S.; Solis Díaz, C.; Kjolseth, C.; Serra Alfaro, JM. (2014). Outstanding hydrogen permeation through CO2-stable dual phase ceramic membranes. Energy and Environmental Science. 2(11):3736-3746. https://doi.org/10.1039/C4EE02066A | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1039/c4ee02066a | es_ES |
dc.description.upvformatpinicio | 3736 | es_ES |
dc.description.upvformatpfin | 3746 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 2 | es_ES |
dc.description.issue | 11 | es_ES |
dc.relation.senia | 274196 | es_ES |
dc.contributor.funder | Ministerio de Ciencia e Innovación | |
dc.contributor.funder | Research Council of Norway | |
dc.contributor.funder | Ministerio de Economía y Competitividad | es_ES |
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