RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Kaolinite
Reference: AJW98
SCM Type: CC - Constant Capacitance
Ligand: Co<2+> - cobalt(II)
Site Type: »Al-OH
Equation: 2 »Al-OH + Co<2+>  ⇔  (»Al-O)2-Co + 2 H<1+>
LogK: -8.03        LogK°I=0 (Conversion to I = 0):   -7.96         LogK2.31 nm−2 (SSD-normalized):   -11.24
Experiment: Potentiometric Titration
Ionic Strength: 0.005 mol/L KNO3
Temperature: 283.15 K
Solid/Liquid Ratio: 6.38 g/L
pH Range: 3.5-9
Ligand Concentration Range: 5E-5 mol/L
Fit Method: FITEQL
Comment: hydroxyl sites SOH probably aluminol groups at crystal edges; inner sphere complex; other logK for 25, 40, 55, 70°C; solid concentration 94m^2/L=6.38g/L
 
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