RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: CSSFZ93
SCM Type: CC - Constant Capacitance
Ligand: Al<3+> - aluminum
Site Type: »X-OH
Equation: »X-OH + Al<3+> + 2 H2O  ⇔  »X-O-Al(OH)2 + 3 H<1+>
LogK: -11.37         LogK2.31 nm−2 (SSD-normalized):   -11.56
Experiment: Potentiometric Titration
Ionic Strength: KCl
Temperature: 298.15 K
pH Range: 3-6
Ligand Concentration Range: 1E-5 - 1.132E-4 mol/L
Fit Method: GRFIT
Comment: original equation: p»X-OH + qAl<3+> + rH<1+> = (»X-OH)p-Alq-Hr<(3q+r)+> with p q r = 1 1 -3; conc. of aluminum: 1.12E-5; 1.58E-5; 1.6E-5; 3.07E-5; 3.25E-5; 4.136E-5; 1.055E-4; 1.132E-4; S/L ratio: 1.86, 1.95, 2.03 g/L; ionic strength: 0.03, 0.1, 1 M KCl
 
1 data sets were retrieved