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Oxygen diffusion, surface exchange and oxygen semi-permeation performances of Ln2NiO4+δ membranes (Ln = La, Pr and Nd)

hal.structure.identifierAxe 1 : procédés céramiques
dc.contributor.authorGEFFROY, Pierre-Marie
hal.structure.identifierAxe 1 : procédés céramiques
dc.contributor.authorREICHMANN, Mickaël
hal.structure.identifierAxe 1 : procédés céramiques
dc.contributor.authorCHARTIER, Thierry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
dc.date.issued2014
dc.identifier.issn0376-7388
dc.description.abstractEnIn order to clearly identify the rate determining step (rds) in oxygen semi-permeation of dense Ln2NiO4+δ membranes (with Ln = La, Pr and Nd), a specific setup has been designed, which allowed measuring the oxygen semi-permeation flux as well as the oxygen activity gradient at both membrane surfaces. From the results of the measurements, the coefficients of oxygen diffusion and surface exchange at both membrane surfaces have been determined. Their values have been compared with the values reported in the literature for similar membrane materials. The main conclusion is that the oxygen flux through these membranes is limited by the oxygen surface exchange at the oxygen-lean face, and not, as previously claimed, by oxygen volume diffusion.
dc.language.isoen
dc.publisherElsevier
dc.subject.enOxygen diffusion
dc.subject.enOxygen surface exchange
dc.subject.enOxygensemi-permeation
dc.subject.enLanthanum nickelate
dc.title.enOxygen diffusion, surface exchange and oxygen semi-permeation performances of Ln2NiO4+δ membranes (Ln = La, Pr and Nd)
dc.typeArticle de revue
dc.identifier.doi10.1016/j.memsci.2013.08.035
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Membrane Science
bordeaux.page234-242
bordeaux.volume451
bordeaux.peerReviewedoui
hal.identifierhal-00907657
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00907657v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Membrane%20Science&rft.date=2014&rft.volume=451&rft.spage=234-242&rft.epage=234-242&rft.eissn=0376-7388&rft.issn=0376-7388&rft.au=GEFFROY,%20Pierre-Marie&REICHMANN,%20Micka%C3%ABl&CHARTIER,%20Thierry&BASSAT,%20Jean-Marc.&GRENIER,%20Jean-Claude&rft.genre=article


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