| Mineral: |
Gibbsite |
| Reference: |
MG96b |
| SCM Type: |
CC - Constant Capacitance
(C1: 1.06 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaCl
|
| Site Type: |
»Al-OH |
| PZC: |
9.8 |
| pK1: |
9.1 |
pK1°I=0 (Conversion to I = 0): |
8.99 |
pK12.31 nm−2 (normalized): |
9.10 |
| pK2: |
10.5 |
pK2°I=0 (Conversion to I = 0): |
10.39 |
pK22.31 nm−2 (normalized): |
10.50 |
| Site Density in nm-2: |
2.3125 |
| Original Site Density: |
0.000432 mol / L solution
|
| Solid/Liquid Ratio in g/L: |
2.5 |
| pH Range: |
2.5-10 |
| Temperature in K: |
296.15 |
| Method for Site Density: |
Literature |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
C was fixed at 1.06 F/m^2 [WH80]; SSD 2.31 sites/nm^2 [DK90] = 3.84E-6 mol/m^2 = 4.32E-4 mol/L; pK were used as adjustable parameters in the one-site approach (monodentate only) but were constrained to agree with the PZC as measured by electrophoretic mobility according to PZC=1/2(pK1+pK2) |
| |
