Mineral: |
amorphous Silica |
Reference: |
K02b |
SCM Type: |
TL - Triple Layer
(C1: 1.0 F/m2, C2: 0.2 F/m2) |
Ionic Strength: |
0.1 mol/L of
NaNO3
|
Site Type: |
»Si-OH |
PZC: |
3.5 |
pK1: |
-2.3 |
pK1°I=0 (Conversion to I = 0): |
-2.41 |
pK12.31 nm−2 (normalized): |
-2.00 |
pK2: |
7.7 |
pK2°I=0 (Conversion to I = 0): |
7.59 |
pK22.31 nm−2 (normalized): |
7.40 |
Site Density in nm-2: |
4.6000 |
Original Site Density: |
4.6 sites / nm² surface
|
Solid/Liquid Ratio in g/L: |
|
pH Range: |
|
Temperature in K: |
298.15 |
Method for Site Density: |
Mean of Different Sources |
Method for Protolysis: | Not Specified |
Fit Method: | GEM |
Comment: |
SSD from [K02a]; 1 bar pressure (air); pK1: =SiO(0.5)H2<+> = =SiO(0.5)H + H<+>; pK2: =SiO(0.5)H = =SiO(0.5)<-> + H<+>; for bidentate surface complexes SSD=2.3 sites/nm^2 |
|