| Mineral: |
Kaolinite |
| Reference: |
XW92 |
| SCM Type: |
DDL - Diffuse Double Layer
|
| Ionic Strength: |
NaNO3
|
| Site Type: |
»Al-OH |
| PZC: |
|
| pK1: |
6.0 |
|
pK12.31 nm−2 (normalized): |
7.54 |
| pK2: |
10.0 |
|
pK22.31 nm−2 (normalized): |
8.46 |
| Site Density in nm-2: |
80.0000 |
| Original Site Density: |
80.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
0.0 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Batch Sorption Experiments |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | graphic extrapolation |
| Comment: |
ionic strength 0.1, 0.01 resp. 0.001M NaNO3; N2-atmosphere; PZC 4-5; SSD calculated from [CW88] based on SSA and NaOH consumption: 160 sites/nm^2; SSD based on crystallographic data 19.8 sites/nm^2 (conclusion, that SSA obtained from BET is to small); assumed that the SSD of Al and Si are proportional to the bulk mineral stoichiometry, that is, NSi = NAl = 0.5 NS |
| |
| Mineral: |
Kaolinite |
| Reference: |
XW92 |
| SCM Type: |
DDL - Diffuse Double Layer
|
| Ionic Strength: |
NaNO3
|
| Site Type: |
»Si-OH |
| PZC: |
|
| pK1: |
-2.0 |
|
pK12.31 nm−2 (normalized): |
-0.46 |
| pK2: |
6.8 |
|
pK22.31 nm−2 (normalized): |
5.26 |
| Site Density in nm-2: |
80.0000 |
| Original Site Density: |
80.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
0.0 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Batch Sorption Experiments |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | graphic extrapolation |
| Comment: |
ionic strength 0.1, 0.01 resp. 0.001M NaNO3; N2-atmosphere; PZC 4-5; SSD calculated from [CW88] based on SSA and NaOH consumption: 160 sites/nm^2; SSD based on crystallographic data 19.8 sites/nm^2 (conclusion, that SSA obtained from BET is to small); assumed that the SSD of Al and Si are proportional to the bulk mineral stoichiometry, that is, NSi = NAl = 0.5 NS |
| |
