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Pressure-dependent deuterium reaction pathways in the Li-N-D system

Bull, DJ, Weidner, E, Shabalin, I, Telling, MTF, Jewell, CM, Gregory, DH and Ross, DK 2010, 'Pressure-dependent deuterium reaction pathways in the Li-N-D system ' , Physical Chemistry Chemical Physics, 12 , pp. 2089-2097.

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    Abstract

    Neutron diffraction data from in situ deuteration and dedeuteration of Li3N are presented under different pressure regimes, whereby reaction pathways differing from the widely reported stoichiometric pathway of Li3N + 2D22Li2ND + LiD + D22LiND2 + 2LiD are observed. At sufficiently high pressures, where the deuterium chemical potential is comparable with the heat of amide formation, the reaction appears to be driven straight to the amide plus deuteride phase mixture. At lower pressures, a cubic phase exhibiting a concentration-dependent variation in lattice parameter is observed. In dedeuteration, two sets of reflections from cubic structures with distinct lattice parameters are observed, both of which exhibit a continual decrease in cell volume. The reaction pathways are discussed in terms of the compositional variation.

    Item Type: Article
    Themes: Subjects / Themes > Q Science
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
    Colleges and Schools > College of Science & Technology
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
    Journal or Publication Title: Physical Chemistry Chemical Physics
    Publisher: Royal Society of Chemistry
    Refereed: Yes
    ISSN: 1463-9076
    Depositing User: Prof D. Keith Ross
    Date Deposited: 25 Nov 2010 18:02
    Last Modified: 04 Jun 2014 08:30
    URI: http://usir.salford.ac.uk/id/eprint/12130

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