| Mineral: |
Montmorillonite |
| Reference: |
SS93a |
| SCM Type: |
CC - Constant Capacitance
|
| Ionic Strength: |
1.0 mol/L of
Ca(ClO4)2
|
| Site Type: |
»Al-OH |
| PZC: |
7.7 |
| pK1: |
8.16 |
|
pK12.31 nm−2 (normalized): |
8.02 |
| pK2: |
8.71 |
|
pK22.31 nm−2 (normalized): |
8.85 |
| Site Density in nm-2: |
1.6600 |
| Original Site Density: |
1.66 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
10.0 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
CEC of Ca-montmorillonite 0.93 meq/g; PZC=PZNPC; C and SSA flexible parameters!; C*SSA=91! (starting value SSA=100m^2/g; C=1F/m^2); SSA(BET)=21.4 m^2/g, SSA (EGME)=661.5 m^2/g); observation that pK1 very close to pK2 suggests that the acting group is >>Al(OH)OH2. SSD for »Al-OH: 0.000598mol/L, for »Si-OH: 0.000355mol/L |
| |
