RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Anatase
Reference: JA98
SCM Type: TL - Triple Layer
Ligand: Cl<1-> - chloride
Site Type: »Ti-OH
Equation: »Ti-OH + Cl<1-> + H<1+>  ⇔  »Ti-OH2-Cl
LogK: 4.0        LogK°I=0 (Conversion to I = 0):   4.21         LogK2.31 nm−2 (SSD-normalized):   4.34
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaCl
Solid/Liquid Ratio: 10.0 g/L
pH Range: 2.5-12
Ligand Concentration Range: 0.1 mol/L
Fit Method: FITEQL
Comment: citation of value from [S89b] for alumina !!, there ionic strength varied between 0.0001 and 1.0 M NaCl or CsCl; [S89b]: from log K=7.5 with pK1=6 follows for eq. 2 logKint=1.5 , pKint -1.5 reference for background electrolyte (used for anatase!) (error in table 1 with pH=1.5)! »Ti-OH2<1+> + Cl<1-> = »Ti-OH2-Cl logK = 1.5 »Ti-OH + H<1+> = »Ti-OH2<1+> -pK1 = logK = 3.5 sum »Ti-OH + Cl<1->+ H<1+> = »Ti-OH2-Cl logK= 1.5+3.5 = 4.0
 
1 data sets were retrieved