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Dual-Phase Oxygen Transport Membranes for Stable Operation in Environments Containing Carbon Dioxide and Sulfur Dioxide

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Dual-Phase Oxygen Transport Membranes for Stable Operation in Environments Containing Carbon Dioxide and Sulfur Dioxide

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dc.contributor.author García Fayos, Julio es_ES
dc.contributor.author Balaguer Ramírez, María es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2016-10-13T07:45:39Z
dc.date.issued 2015-12-21
dc.identifier.issn 1864-5631
dc.identifier.uri http://hdl.handle.net/10251/71686
dc.description.abstract [EN] Dual-phase membranes are appealing candidates for oxygen transport membranes owing to their unique combination of ambipolar electron-ion transport and endurance. However, O-2 separation in industrial environments demands very high stability and effectiveness in the presence of CO2- and SO2-bearing process gases. Here, the composition of dual-phase membranes based on NiFe2O4-Ce0.8Tb0.2O2-delta (NFO-CTO) was optimized and the effective performance of catalytically-activated membranes was assessed in presence of CO2 and SO2. Further insight into the limiting mechanisms in the permeation was gained through electrical conductivity studies, permeation testing in several conditions and impedance spectroscopy analysis. The dual-phase membranes were prepared by one-pot sol-gel method and their permeability increases with increasing fluorite content. An O-2 flux of 0.25 (ml min(-1) cm(-2)) mm at 1000 degrees C was obtained for a thick self-standing membrane with 40:60 NFO/CTO composition. An in-depth study mimicking typical harsh conditions encountered in oxyfuel flue gases was performed on a 50:50 NFO/CTO membrane. CO2 content as well as SO2 presence in the sweep gas stream were evaluated in terms of O-2 permeation. O-2 fluxes of 0.13 and 0.09 mL min(-1) cm(-) 2 at 850 degrees C were obtained for a 0.59 mm thick membrane under CO2 and 250 ppm SO2 in CO2 sweep conditions, respectively. Extended periods at work under CO2- and SO2-containing atmospheres revealed good permeation stability over time. Additionally, XRD, backscattered electrons detector (BSD)-SEM, and energy-dispersive X-ray spectroscopy (EDS) analysis of the spent membrane confirmed material stability upon prolonged exposure to SO2. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry for Science and Innovation (ENE2011-24761 and SEV-2012-0267 Grants) and by the EU through FP7 GREEN-CC Project (Grant Agreement Number: 608524) is gratefully acknowledged. The authors would like to express their gratitude to Dr. Cecilia Solis for Scanning Electron Microscopy analysis. en_EN
dc.language Inglés es_ES
dc.publisher Wiley-VCH Verlag es_ES
dc.relation MICINN/ENE2011-24761 es_ES
dc.relation MICINN/SEV-2012-0267 es_ES
dc.relation.ispartof ChemSusChem es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ceramic membrane es_ES
dc.subject CO2 es_ES
dc.subject fluorite es_ES
dc.subject Oxygen permeation es_ES
dc.subject SO2 es_ES
dc.subject Spinel es_ES
dc.title Dual-Phase Oxygen Transport Membranes for Stable Operation in Environments Containing Carbon Dioxide and Sulfur Dioxide es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1002/cssc.201500951
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/608524/EU/Graded Membranes for Energy Efficient New Generation Carbon Capture Process/ 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 Fayos, J.; Balaguer Ramírez, M.; Serra Alfaro, JM. (2015). Dual-Phase Oxygen Transport Membranes for Stable Operation in Environments Containing Carbon Dioxide and Sulfur Dioxide. ChemSusChem. 8(24):4242-4249. https://doi.org/10.1002/cssc.201500951 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1002/cssc.201500951 es_ES
dc.description.upvformatpinicio 4242 es_ES
dc.description.upvformatpfin 4249 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 8 es_ES
dc.description.issue 24 es_ES
dc.relation.senia 300493 es_ES
dc.contributor.funder European Commission
dc.contributor.funder Ministerio de Ciencia e Innovación


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