RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: TOS14
SCM Type: NE - Non-electrostatic
Ligand: NpO2<1+> - neptunyl(V)
Site Type: »X-OH
Equation: »X-OH + NpO2<1+> + H2O  ⇔  »X-O-NpO2(OH)<1-> + 2 H<1+>
LogK: -14.5        LogK°I=0 (Conversion to I = 0):   -14.61         LogK2.31 nm−2 (SSD-normalized):   -11.82
Experiment: Mean of Different Sources
Ionic Strength: 0.1 mol/L
pH Range: 3-11
Fit Method: FITEQL
Comment: "The equilibrium constants derived from individual optimization runs using a total of six data-sets from [G94b] and [TPB98a] were averaged".
Ion exchange reaction: ZNa + NpO2<1+> = ZNpO2 + Na<1+> with log K = -0.26
 
1 data sets were retrieved