Solvent extraction of some lanthanides from chloride and nitrate solutions by binary extractants
作者： V.V. Belova , A.A. Voshkin , A.I. Kholkin , A.K. Payrtman
DOI: 10.1016/J.HYDROMET.2009.03.004
关键词: Hydrometallurgy 、 Aqueous solution 、 Salt (chemistry) 、 Inorganic chemistry 、 Lanthanum 、 Lanthanide 、 Extraction (chemistry) 、 Chloride 、 Chemistry 、 Aqueous two-phase system
摘要: Abstract The solvent extraction of some rare earth metals (REM) from chloride and nitrate solutions by binary extractants, such as salts trioctylmethylammonium with dialkylphosphinic, dialkylmonothiophosphinic, dialkyldithiophosphinic acids in toluene, a function the compositions aqueous organic phases has been studied. isotherms bis(2,4,4-trimethylpentyl)phosphinate system were examined. effect extractant concentration phase salt present (NaCl, NaNO3) was also investigated. ratio Cex:CLn(org) found for REM chlorides close to 3, whereas that nitrates 1 case loaded phase. Extraction efficiency extractants towards lanthanum well decreases series: dialkylphosphinate > dialkylmonothiophosphinate >> dialkyldithiophosphinate quaternary ammonium base (QAB). separation factors metal pairs lanthanides calculated using experimental data obtained. Effective systems involving found.
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