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Synergistic extraction of Eu(III) with N-phosphorylated bis-ureas and chlorinated cobalt bis(dicarbollide) ion
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Published/Copyright:
November 20, 2012
Abstract
Extraction of Eu(III) with a synergistic mixture of polydentate N-phosphorylated bis-ureas with the general formula (i-PrO)2P(O)NHC(O)NHXNHC(O)NHP(O)(Oi-Pr)2 (X = (CH2)7, (CH2)2O(CH2)2 and (CH2)2O(CH2)2O(CH2)2) and chlorinated cobalt bis(dicarbollide) ion (CCD−) with formula closo-[(1,2-C2B9H8Cl3)2-3-Co]− was studied using nitrobenzene as the solvent. Extraction of Eu(III) was very effective up to high concentrations of nitric acid. Eu(III) is most likely extracted into the organic phase as the [EuL2]3+ species whereas the positive charge of extracted complex is compensated by CCD and/or nitrate anions.
Keywords: Liquid-liquid extraction; Lanthanides; Actinides; N-phosphorylated bis-ureas; Chlorinated cobalt bis(dicarbollide) ion
Published Online: 2012-11-20
Published in Print: 2013-01
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Keywords for this article
Liquid-liquid extraction;
Lanthanides;
Actinides;
N-phosphorylated bis-ureas;
Chlorinated cobalt bis(dicarbollide) ion
Articles in the same Issue
- Complex formation of Np(V) with fulvic acid at tracer metal concentration
- Complexation of Tc(IV) with EDTA at varying ionic strength of NaCl
- Application of PEG based aqueous biphasic systems in extraction and separation of no-carrier-added 183Re from bulk tantalum
- Synergistic extraction of Eu(III) with N-phosphorylated bis-ureas and chlorinated cobalt bis(dicarbollide) ion
- One-dimensional Ti–O based nanotubes as ion exchanger: synthesis, characterization and application in radiochemical separation of carrier-free 137mBa from 137Cs
- Production, quality control and biodistribution studies of thulium-170-labeled ethylenediamine (tetramethylene phosphonic acid)
- Soil pollution with trace elements at selected sites in Romania studied by instrumental neutron activation analysis
- Radical intermediates of low temperature radiolysis of di-tert-butylcyclohexano-18-crown-6/1-octanol extractant
- Comparative study on the radioactivity of TE-NORM in different components of oil separator tanks
