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Improvement of transport properties and hydrogen permeation of chemically-stable proton conducting oxides bases on the system BaZr1-x-yYxMyO3-δ

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Improvement of transport properties and hydrogen permeation of chemically-stable proton conducting oxides bases on the system BaZr1-x-yYxMyO3-δ

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dc.contributor.author Escolástico Rozalén, Sonia es_ES
dc.contributor.author Ivanova, Mariya es_ES
dc.contributor.author Solis Díaz, Cecilia es_ES
dc.contributor.author Roitsch, Stefan es_ES
dc.contributor.author Meulenberg, Wilhem Albert es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2017-05-24T06:59:27Z
dc.date.available 2017-05-24T06:59:27Z
dc.date.issued 2012
dc.identifier.issn 2046-2069
dc.identifier.uri http://hdl.handle.net/10251/81702
dc.description.abstract [EN] The structural and transport properties as well as the chemical stability of a series of proton-conducting oxides based on yttrium-doped barium zirconate were investigated. Specifically, Pr-, Fe- and Mn-doped BaZr1-x-yYxMyO3-delta compounds were prepared by solid state reaction. The compound exhibiting the highest total and protonic conductivity at elevated temperatures under reducing atmospheres was BaZr0.8Y0.15Mn0.05O3-delta. Temperature-programmed reduction experiments revealed a particular redox behavior related to the Mn-species under selected conditions. The hydrogen permeation was thoroughly studied as a function of the temperature, hydrogen concentration and the humidification degree in the sweep gas. Moreover, the transient processes induced by alternate step changes in the humidification degree of the sweep gas were analysed. The highest steady hydrogen evolution flow exceeded 0.03 ml min(-1) cm(-2) (0.9 mm-thick membrane) at 1000 degrees C for the humidified sweep gas. The stability of BaZr0.8Y0.15M0.05O3-delta under operation-relevant atmospheres (CO2-rich reducing atmosphere at high temperature) was tested using different techniques ( X-ray diffraction (XRD), Raman, SEM, TEM and TG) and the results showed that this material is stable even when exposed to 115 ppm H2S. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry for Economics and Competitiveness (JAE-Pre 08-0058, ENE2008-06302 and ENE2011-24761 grants) and the Helmholtz Association of German Research Centers through the Helmholtz Alliance MEM-BRAIN (Initiative and Networking Fund) is kindly acknowledged. Dr M. Ivanova thanks the Northern European Innovative Energy Research Program N-INNER (grant no. 09- 064274) and the German Federal Ministry of Education and Research (BMBF) for supporting the N-INNER Project ‘‘Novel High Temperature Proton and Mixed-Proton Electron Conductors for Fuel Cells and H2-separation membranes’’ (Contract 03SF0330).
dc.language Inglés es_ES
dc.publisher Royal Society of Chemistry es_ES
dc.relation MINECO/JAE-Pre 08-0058 es_ES
dc.relation MINECO/ENE2008-06302 es_ES
dc.relation MINECO/ENE2011-24761
dc.relation N-INNER/09-064274
dc.relation BMBF/03SF0330
dc.relation.ispartof RSC Advances es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Doped barium zirconate es_ES
dc.subject Stronium cerate es_ES
dc.subject Thin-fims es_ES
dc.subject Membranes es_ES
dc.subject Perovskites es_ES
dc.subject Separation es_ES
dc.subject Permeability es_ES
dc.subject Stability es_ES
dc.title Improvement of transport properties and hydrogen permeation of chemically-stable proton conducting oxides bases on the system BaZr1-x-yYxMyO3-δ es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/C2RA20214J
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.description.bibliographicCitation Escolástico Rozalén, S.; Ivanova, M.; Solis Díaz, C.; Roitsch, S.; Meulenberg, WA.; Serra Alfaro, JM. (2012). Improvement of transport properties and hydrogen permeation of chemically-stable proton conducting oxides bases on the system BaZr1-x-yYxMyO3-δ. RSC Advances. 2(11):4932-4943. doi:10.1039/C2RA20214J es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://doi.org/10.1039/c2ra20214j es_ES
dc.description.upvformatpinicio 4932 es_ES
dc.description.upvformatpfin 4943 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 222705 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad
dc.contributor.funder Bundesministerium für Bildung und Forschung, Alemania
dc.contributor.funder Northern European Innovative Energy Research Program


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