| Mineral: |
Vernadite |
| Reference: |
CL86 |
| SCM Type: |
TL - Triple Layer
(C1: 2.4 F/m2, C2: 0.2 F/m2) |
| Ionic Strength: |
0.0 mol/L of
NaNO3
|
| Site Type: |
»Mn-OH |
| PZC: |
2.3 |
| pK1: |
-1.6 |
pK1°I=0 (Conversion to I = 0): |
-1.60 |
pK12.31 nm−2 (normalized): |
-0.71 |
| pK2: |
6.2 |
pK2°I=0 (Conversion to I = 0): |
6.20 |
pK22.31 nm−2 (normalized): |
5.31 |
| Site Density in nm-2: |
18.0000 |
| Original Site Density: |
18.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | graphic extrapolation |
| Comment: |
data measured at different ionic strengths (1E-1 to 1E-3 M), extrapolated to conditions of I = 0 and zero fractional surface ionization, set of constants were prepared for freshly precipitated d-MnO2, PZC=2.3+-0.2 based on interpretation of potentiometric titration curves, calcium adsorption, sodium adsorption, and microelectrophoresis data |
| |
