Developing a heating procedure to optimise hydrogen permeance through Pd-Ag membranes of thickness less than 2.2 μm

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dc.contributor.authorKeuler J.N.
dc.contributor.authorLorenzen L.
dc.date.accessioned2011-05-15T15:59:41Z
dc.date.available2011-05-15T15:59:41Z
dc.date.issued2002
dc.description.abstractThe Pd-Ag films, with a total thickness of <2.2 μm, were deposited by electroless plating on the inside of α-alumina membranes from SCT. The H2 permeances through separated Pd-Ag layers were poor and heating conditions were investigated to improve the H2 permeances through the metal films. The heating temperature, heating time and heating environment all had a significant effect on the H2 permeance and the H2 to N2 selectivity of the Pd-Ag films. The films were oxidised at 310°C for 1 h after heat treatment in Ar at 550°C, and then reduced in H2. This additional surface modification step more than doubled the H2 permeance through the film and only created a moderate amount of membrane defects as indicated by the increase in the N2 permeance. After the heating process, the membranes were characterised from 250 to 410°C using both a sweep gas and a positive pressure difference. © 2002 Elsevier Science B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationJournal of Membrane Science
dc.identifier.citation195
dc.identifier.citation2
dc.identifier.issn3767388
dc.identifier.other10.1016/S0376-7388(01)00562-2
dc.identifier.urihttp://hdl.handle.net/10019.1/11313
dc.subjectElectroless plating
dc.subjectHeating
dc.subjectHydrogen
dc.subjectMembranes
dc.subjectHydrogen permeance
dc.subjectMetallic films
dc.subjectaluminum oxide
dc.subjecthydrogen
dc.subjectmetal
dc.subjectnitrogen
dc.subjectpalladium
dc.subjectsilver
dc.subjectgas separation
dc.subjectheat
dc.subjectmembrane
dc.subjectpermeability
dc.subjectarticle
dc.subjectfilm
dc.subjectgas
dc.subjectheating
dc.subjectmembrane
dc.subjectmembrane permeability
dc.subjectpriority journal
dc.subjectreduction
dc.subjecttemperature
dc.subjectthickness
dc.titleDeveloping a heating procedure to optimise hydrogen permeance through Pd-Ag membranes of thickness less than 2.2 μm
dc.typeArticle
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