Abstract
A range of sodalites of general formula LiNa(AlSiO)Cl have been synthesised by structure conversion and ion exchange reactions. High resolution Si NMR spectra of these compounds demonstrate a single resonance, the frequency of which varies smoothly with lithium content and the geometry of the Si-(OAl) tetrahedron determined by powder neutron diffraction. Incorporation of lithium in the sodalite structure results in contraction of the Si-O-Al bond angle to accommodate the preferred coordination geometry of the smaller cavity species. In partially exchanged materials the chloride ion is displaced away from the cavity centre.
Original language | English |
---|---|
Pages (from-to) | 430-435 |
Journal | Solid State Ionics |
Volume | 32-33 |
Issue number | PART 1 |
DOIs | |
Publication status | Published - 1989 |