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Oxygen permeation studies in surface Pd-activated asymmetric Ce0.9Gd0.1O1.95 membranes for application in CO2 and CH4 environments

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Oxygen permeation studies in surface Pd-activated asymmetric Ce0.9Gd0.1O1.95 membranes for application in CO2 and CH4 environments

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dc.contributor.author García-Fayos, Julio es_ES
dc.contributor.author Sogaard, Martin es_ES
dc.contributor.author Kaiser, Andreas es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2021-02-03T04:34:15Z
dc.date.available 2021-02-03T04:34:15Z
dc.date.issued 2019-06-01 es_ES
dc.identifier.issn 1383-5866 es_ES
dc.identifier.uri http://hdl.handle.net/10251/160613
dc.description.abstract [EN] Oxygen Transport Membranes (OTMs) present a high potential for being considered in the integration of O-2 supply systems in oxyfuel installations, as well as for the conduction of chemical reactions when operating Catalytic Membrane Reactors (CMRs). Several solutions are being prospected for overcoming the main drawbacks regarding materials stability and membrane performance. A highly stable material such as Ce0.9Gd0.1O1.95(CGO) doped with 2% mol. Co was studied as a 40 mu m-thick CGO supported CGO membrane. This membrane was characterized by studying its performance as oxygen permeation membrane for the production of oxygen under oxyfuel conditions and for the conduction of chemical reactions involving CH4. In order to improve oxygen surface reactions and consequently, the oxygen permeation, the membrane was surface activated with the addition of Pd nanoparticles. A broad characterization consisting of the study of O-2 production under different environments simulating real application conditions was conducted by subjecting the membrane to Ar, CO2 and CH4 environments in the temperature range of 750 to 1000 degrees C. A peak oxygen flux of 7.8 ml.min(-1)cm(-2) was obtained at 1000 degrees C when using a sweep consisting of 75% CH4 in Ar. This flux corresponds to a 16-fold improvement in the O-2 permeation at 1000 degrees C when sweeping with Ar, with an oxygen flux of 0.47 ml.min(-1).cm(-2). An oxygen flux of 1.2 ml.min(-1).cm(-2) was obtained at 1000 degrees C when feeding with pO(2) = 1 atm in feed side. Membrane performance under CO2-containing environments showed a positive effect of CO2 on permeation at 1000-900 degrees C, reaching up to 0.59 ml.min(-1).cm(-2) O-2 at 1000 degrees C. A continuous exposure of CO2 during 48 h at 750 degrees C resulted in a slight J(O-2) increase, with a reversible reduction in performance when returning to clean conditions, thus demonstrating high stability of CGO membranes. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry for Science and Innovation (Project ENE2008-06302) and by the EU through FP7 NASA-OTM Project (NMP3-SL-2009- 228701) is kindly acknowledged. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Separation and Purification Technology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Cerium gadolinium oxide es_ES
dc.subject Supported membrane es_ES
dc.subject Catalyst es_ES
dc.subject Tape casting es_ES
dc.subject MIEC es_ES
dc.subject Syngas es_ES
dc.subject Oxyfuel es_ES
dc.title Oxygen permeation studies in surface Pd-activated asymmetric Ce0.9Gd0.1O1.95 membranes for application in CO2 and CH4 environments es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.seppur.2019.01.068 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/228701/EU/NAnostructured Surface Activated ultra-thin Oxygen Transport Membrane/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//ENE2008-06302/ES/BUSQUEDA DE NUEVOS MATERIALES CONDUCTORES DE OXIGENO E HIDROGENO EN ESTADO SOLIDO MEDIANTE QUIMICA COMBINATORIA/ es_ES
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation García-Fayos, J.; Sogaard, M.; Kaiser, A.; Serra Alfaro, JM. (2019). Oxygen permeation studies in surface Pd-activated asymmetric Ce0.9Gd0.1O1.95 membranes for application in CO2 and CH4 environments. Separation and Purification Technology. 216:58-64. https://doi.org/10.1016/j.seppur.2019.01.068 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.seppur.2019.01.068 es_ES
dc.description.upvformatpinicio 58 es_ES
dc.description.upvformatpfin 64 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 216 es_ES
dc.relation.pasarela S\383774 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Ministerio de Ciencia e Innovación es_ES
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