Abstract
The cesium ion-exchange behavior of sodium difluorotetrasilicate (Na-TSM) and sodium taeniolite (Na-TAE), which belong to the mica family, in acidic media has been determined. Cs+ uptake in pH 1.0 decreased to about 30% to a neutral condition for Na-TSM. The amount of Cs+ exchange dropped dramatically for Na-TAE at pH 0.3, corresponding to about 0.5 mol dm-3 HNO3. After the ion-exchange reaction, scanning electron microscopy clearly showed that the layered structure was destroyed when the ion-exchange ratio decreased.
