| Mineral: |
Kaolinite |
| Reference: |
WWD98 |
| SCM Type: |
DDL - Diffuse Double Layer
|
| Ionic Strength: |
0.1 mol/L of
NaNO3
|
| Site Type: |
»X-OH |
| PZC: |
8.9 |
| pK1: |
|
pK1°I=0 (Conversion to I = 0): |
|
|
| pK2: |
|
pK2°I=0 (Conversion to I = 0): |
|
|
| Site Density in nm-2: |
1.2546 |
| Original Site Density: |
0.0001 mol / L solution
|
| 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: | FITEQL |
| Comment: |
only »Al-OH and »Si-OH sites located at the edges are acrive; crystallographic site density (»Al-OH) from [S84]=2 sites/nm^2, crystallographic site density (»Si-OH) from [R82]=6 sites/nm^2; calculated PZC=1/2(pK1+pK2)=8.42; pK values also estimated for 0.001 (6.68/7.63) and 0.01 N (8.04/9.13) NaNO3; SSD für [»Si-OH]+[»Al-OH]=9.97E-5 mol/L weighted mean SSD 7.7E-5 mil/L; weighted mean pK 7.57/9.23; in publication wrong sign of pK and switched !; CO2 free water |
| |
