RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	amorphous Silica
Reference:	S05
SCM Type:	TL - Triple Layer
Ligand:	NH4<+> - ammonium
Site Type:	»Si-OH
Equation:	»SiOH + NH4<+> ⇔ »SiO-NH4 + H<1+>
LogK:	4.5
Experiment:	Literature
Ionic Strength:	1.0 mol/L
Temperature:	298.15 K
Fit Method:	Unknown
Comment:	calculation from literature values with standard SSA and SSD at ionic strength of 1M, log K for Aerosil in brackets for Cabosil content »Si-O<1-> + NH4<1+> = »Si-O-NH4 logK = 11.5(11.1) »Si-OH = »Si-O<1-> + H<1+> pK2 = -logK = 7.0 sum »Si-OH + NH4<1+> = »Si-O-NH4 + H<1+> logK = 11.5(11.1) -7 = 4.5(4.1)

1 data sets were retrieved