RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: BPS00c
SCM Type: CDM - (CD-)MUSIC
Ligand: PMA<4-> - pyromellitate
Site Type: »Fe-singly
Equation: »Fe-singly-OH<-0.5> + PMA<4-> + 3 H<1+>  ⇔  »Fe-singly-OH2-H2PMA<-1.5>
LogK: 19.83 ± 0.06         LogK°I=0 (Conversion to I = 0):   21.86         LogK2.31 nm−2 (SSD-normalized):   19.90
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 5.0 g/L
pH Range: 3-9
Ligand Concentration Range: 2.24E-3. 3.36E-3. 6.71E-3 mol/L
Fit Method: FITEQL
Comment: {110} plane; equation 3H<+> + 2[=FeOH<-0.5>]{110} + PMA<4-> = [=FeOH2<+0.5>H2PMA<2->]{110}; for adsorption experiments: C1=1.5 F/m^2, C2=1.76 F/m^2
 
1 data sets were retrieved