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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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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: Schools > School of Computing, Science and Engineering
Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
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: 30 Nov 2015 23:57

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