Solvent Extraction of Thorium(IV) by Didodecylphoric Acid
2003 ◽
Vol 8
(2)
◽
pp. 107
Keyword(s):
Solvent extraction of Thorium (VI) ion from perchlorate solution using didodecylphosphoric acid, DDPA, in chloroform diluent was studied. The effects of stripping hydrochloric acid concentration, stripping time, extraction time, DDPA concentration, pH, ionic strength, supporting electrolyte and temperature on the extraction processes have been studied. From the distribution coefficient values at different temperatures,the enthalpy, the free energy and the entropy changes associated with the extraction processes were determined. The composition of the complex formed was established to be Th(ClO4)4-nRn(HR)5-n where, n=1 or 2 and (HR)2 represents the dimer of DDPA.
1999 ◽
Vol 4
◽
pp. 15
◽
2013 ◽
Vol 734-737
◽
pp. 1033-1036
2020 ◽
Vol 441
◽
pp. 012152
Keyword(s):
2020 ◽
Vol 441
◽
pp. 012142
2018 ◽
Vol 299
◽
pp. 012092
◽
Extraction of Sm(III)and Nd(III) with N,N,N’,N’-tetrabutyl-3-oxy-diglycolamidefrom hydrochloric acid
2013 ◽
Vol 78
(1)
◽
pp. 93-100
◽