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

Daniel J. Bull, Eveline Weidner, Igor L. Shabalin, Mark T.F. Telling, Catherine M. Jewell, Duncan H. Gregory, D. Keith Ross

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

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 Li 3N + 2D2 ↔ Li2ND + LiD + D2 ↔ LiND2 + 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.

本文言語英語
ページ(範囲)2089-2097
ページ数9
ジャーナルPhysical Chemistry Chemical Physics
12
9
DOI
出版ステータス出版済み - 2 26 2010

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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