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TitlePreparation and high-temperature characterisation of nanostructured alumina ceramic membranes for gas purification
Publication TypeJournal Article
Year of Publication2008
AuthorsKirchner, A., Brown I.W.M., Bowden M.E., Kemmitt T., and Smith G.
JournalCurrent Applied Physics
Pagination451 - 454
Date Published2008
ISSN15671739 (ISSN)
KeywordsAlumina, Ceramic materials, Gas fuel purification, Hydrogen purifying membranes, Membrane fabrication, Nanostructured materials, Palladium, Palladium films, Porous anodic alumina, Robust films, Thermoanalysis, Thin films
AbstractPorous anodic alumina discs supporting palladium films as elements of hydrogen-purifying membranes have been examined for their high-temperature behaviour. The method employed to fabricate the porous alumina support is the so-called 'hard anodising' technique, which offers substantially higher growth rates while producing mechanically robust films. These alumina membranes were found to possess a thermal stability better than commercial Anopore® membranes. Upon long-term exposure at 800 °C they transform into γ-alumina without major deformation. Ultra-thin palladium films deposited across the alumina pores by physical vapour deposition are continuous and stable in reducing atmospheres to at least 700 °C but are oxidised and destroyed by heating in air. © 2007 Elsevier B.V. All rights reserved.

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