Details Sample Characterization
| Mineral: |
Montmorillonite |
| Reference: |
GLMTB11 |
| Supplier: |
Clay Minerals Society Source Clays Repository |
| Trade Name: |
SWy-2 (Na-rich Montmorillonite, Crook County, Wyoming, USA) |
| Preparation: |
In each Nalgene centrifuge tube, 2 g of SWy2 and 50 mL of a 1 M CaCl2 solution were mixed on a SRT1 Stuart Scientific roller mixer for 24 h, and the mixture was centrifuged. The supernatant chloride
solution was then discarded, and the tube was refilled with 50 mL of 1 M CaCl2 solution. This exchange procedure was repeated five times. The sample was then introduced into dialysis membrane tubing and placed in deionized water to remove excess sodium and chloride. The water was changed daily until chloride was not detected by an AgNO3 precipitation test. This Ca-saturated clay sample was dispersed in deionized water and the fine fraction (<2 µm) isolated by sedimentation, by applying Stokes’ law. The <2 µm Ca-saturated clay fraction was dried and finely hand ground in an agate mortar. |
| CEC: |
85.1 ± 0.1 meq/100g |
| |
1 data sets were retrieved
|
