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Investigation of water adsorption on metal oxide surfaces under conditions representative of PuO2 storage containers

Murphy, Pat and Boxall, Colin and Taylor, Robin J. (2012) Investigation of water adsorption on metal oxide surfaces under conditions representative of PuO2 storage containers. Materials Research Society Symposium Proceedings, 1383.

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    Abstract

    We have developed a QCM (Quartz Crystal Microbalance) based method for direct gravimetric determination of water adsorption on PuO2 surrogate surfaces, especially CeO2, under conditions representative of those in a typical PuO2 storage can. In this application, the method of transduction of the QCM relies upon the linear relationship between the resonant frequency of piezoelectrically active quartz crystals and the mass adsorbed on the crystal surface. The spurious effect of high temperatures on the resonant frequency of coated QCM crystals has been compensated for by modeling the temperature dependence of the frequency response of the surrogate coated-QCM crystal in the absence of water. Preliminary results indicate that water is readily adsorbed from the vapor phase into porous metal oxide structures by capillary condensation, an observation that may have important ramifications for water uptake within the packed powder beds that may obtain in PuO2 storage cans.

    Item Type: Article
    Journal or Publication Title: Materials Research Society Symposium Proceedings
    Uncontrolled Keywords: nuclear ; plutonium dioxide ; water adsorption ; QCM ; cerium oxide
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Departments: Faculty of Science and Technology > Engineering
    ID Code: 60075
    Deposited By: ep_importer_pure
    Deposited On: 19 Nov 2012 08:59
    Refereed?: Yes
    Published?: Published
    Last Modified: 10 Apr 2014 00:20
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/60075

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