Chemistry Letters, Vol.45, No.12, 1385-1387, 2016
Identification of Multiple Cs+ Adsorption Sites in a Hydroxy-interlayered Vermiculite-like Layered Silicate through Cs-133 MAS NMR Analysis
Cs-133 magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy revealed two Cs sites in Cs-adsorbed aluminium-altered phlogopite (Cs Al-Phl), but only one site for Cs-adsorbed magnesium-altered phlogopite (Cs Mg-Phl). Cesium ions in hydroxy-interlayered vermiculite-like layered silicate reside at sites in both mica zones and in interlayer wedge zones of Al-Phl. It is likely that chemical exchange of Cs+ ions occurs between these two zones.