| Mineral: |
amorphous Silica |
| Reference: |
S06c |
| SCM Type: |
TL - Triple Layer
(C1: 0.95 F/m2) |
| Ionic Strength: |
NaCl
|
| Site Type: |
»Si-OH |
| PZC: |
2.8 |
| pK1: |
-1.4 |
|
pK12.31 nm−2 (normalized): |
-0.76 |
| pK2: |
7.0 |
|
pK22.31 nm−2 (normalized): |
6.36 |
| Site Density in nm-2: |
10.0000 |
| Original Site Density: |
10.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
|
| Temperature in K: |
298.15 |
| Method for Site Density: |
| Method for Protolysis: | Literature |
| Fit Method: | graphic extrapolation |
| Comment: |
pK1 and pK2 were calculated from the values pH(ZPC) and deltapKn(0); equilibrium constants in this study refer to site-occupancy standard state with hypothtical 1.0 M ionic strength (K°) and values for N' = 10 * 10^18 m^-2 and A' = 10 m²/g using the equation: K = K°(Ns * As/N' * A'), where Ns represents the SSD = 4.6 sites/nm² from [K94d] and As the SSA = 388 m²/g from [K94d]; parameters predicted from equations in [S05]; pH(ZPC): theoretically predicted value [S05] |
| |
