Table 1 Thermodynamic parameters for the complexation of glutarimidedioxime with Mn2+ and UO22+.
From: Complexation of Manganese with Glutarimidedioxime: Implication for Extraction Uranium from Seawater
Reaction | logβ | ∆H kJ∙mol−1 | ∆S J∙mol−1∙K−1 | ref |
|---|---|---|---|---|
H+ + A2− = HA− | 12.27 ± 0.03 | −36.1 ± 0.5 | 110 ± 2 | |
2 H+ + A2− = H2A | 23.15 ± 0.12 | −69.7 ± 0.9 | 202 ± 3 | |
3 H+ + A2− = H3A+ | 25.67 ± 0.12 | −77.0 ± 6.0 | 218 ± 14 | |
Mn2+ + H++ A2− = MnHA+ | 16.67 ± 0.12 | −44.5 ± 0.6 | 170 ± 4 | This work |
Mn2+ + 2A2− = MnA22− | 12.78 ± 0.12 | −44.6 ± 1.2 | 95 ± 6 | This work |
UO22+ + H++ A2− = UO2HA+ | 22.7 ± 1.3 | −71.0 ± 6.0 | 197 ± 14 | |
UO22+ + 2A2− = UO2A22− | 27.5 ± 2.3 | −101 ± 10 | 188 ± 24 |
