| Mineral: |
Kaolinite |
| Reference: |
MDCF95 |
| SCM Type: |
CC - Constant Capacitance
(C1: 1.2 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaNO3
|
| Site Type: |
»Si-OH |
| PZC: |
|
| pK1: |
|
pK1°I=0 (Conversion to I = 0): |
|
|
| pK2: |
7.62 |
pK2°I=0 (Conversion to I = 0): |
7.51 |
pK22.31 nm−2 (normalized): |
7.82 |
| Site Density in nm-2: |
1.4500 |
| Original Site Density: |
1.45 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
2.0 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: |
| Comment: |
site concentration for kaolinite 1.3E-4 mol/L, assumption: at the kaolinite surface equal number of aluminol sites and silanol sites; calculated acidity constants for alumina [MDCF94] and silica are used for the calculation of the kaolinite titration curve |
| |
| Mineral: |
Kaolinite |
| Reference: |
MDCF95 |
| SCM Type: |
CC - Constant Capacitance
(C1: 1.2 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaNO3
|
| Site Type: |
»Al-OH |
| PZC: |
|
| pK1: |
7.9 |
pK1°I=0 (Conversion to I = 0): |
7.79 |
pK12.31 nm−2 (normalized): |
7.70 |
| pK2: |
9.22 |
pK2°I=0 (Conversion to I = 0): |
9.11 |
pK22.31 nm−2 (normalized): |
9.42 |
| Site Density in nm-2: |
1.4500 |
| Original Site Density: |
1.45 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
2.0 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: |
| Comment: |
site concentration for kaolinite 1.3E-4 mol/L, assumption: at the kaolinite surface equal number of aluminol sites and silanol sites; calculated acidity constants for alumina [MDCF94] and silica are used for the calculation of the kaolinite titration curve |
| |
