Solvent Extraction of Thorium(IV) by Didodecylphoric Acid
| Autor: | Khaled Mousa, Fawwaz I. Khalili, Ehsan I. Soudani |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Solvent extraction
Chloroform Thorium(IV) Supporting electrolyte Inorganic chemistry Thorium chemistry.chemical_element Hydrochloric acid DDPA Diluent Partition coefficient chemistry.chemical_compound Perchlorate Thermodynamics chemistry Ionic strength lcsh:Science (General) lcsh:Q1-390 Nuclear chemistry |
| Zdroj: | Sultan Qaboos University Journal for Science, Vol 8, Iss 2, Pp 107-114 (2003) |
| ISSN: | 2414-536X 1027-524X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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