RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Anatase
Reference: BHV01a
SCM Type: CDM - (CD-)MUSIC
Ligand: NH4<+> - ammonium
Site Type: »Ti-doubly
Equation: »Ti-doubly-O<-2/3> + NH4<1+>  ⇔  »Ti-doubly-NH4<+1/3>
LogK: -0.4        LogK°I=0 (Conversion to I = 0):   -0.29         LogK2.31 nm−2 (SSD-normalized):   0.24
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.15 K
pH Range: 4-8
Fit Method: ECOSAT
Comment: same value for singly and doubly coordinated site, valid for low-affinity sites; no CO2; equation: =Ti2O<-2/3> + NH4<1+> = Ti2O<-2/3>-NH4<1+>; solid concentration 20-60 g/L
 
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