RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: BNPS00
SCM Type: CDM - (CD-)MUSIC
Ligand: PMA<4-> - pyromellitate
Site Type: »Fe-singly
Equation: 2 »Fe-singly-OH<-0.5> + PMA<4-> + 2 H<1+>  ⇔  (»Fe-singly-OH2)2-PMA<3->
LogK: 20.88 ± 0.06         LogK°I=0 (Conversion to I = 0):   22.81         LogK2.31 nm−2 (SSD-normalized):   21.03
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 10.8 g/L
pH Range: 3-9
Ligand Concentration Range: 0.56E-3. 1.12E-3. 1.11E-3. 2.24E-3. 4.48E-3 mol/L
Fit Method: FITEQL
Comment: {110} plane; equation 2H<+> + 2[=FeOH<-0.5>]{110} + PMA<4-> = [(=FeOH2<+0.5>)2PMA<4->]{110}; for adsorption experiments: C1=1.6 F/m^2, C2=3.05 F/m^2
 
1 data sets were retrieved