Synergistic extraction of Eu(III) with N-phosphorylated bis-ureas and chlorinated cobalt bis(dicarbollide) ion

0392026 - ÚACH 2014 RIV DE eng J - Journal Article
Selucký, P. - Bubeníková, M. - Rais, J. - Grüner, Bohumír - Brusko, V.V.
Synergistic extraction of Eu(III) with N-phosphorylated bis-ureas and chlorinated cobalt bis(dicarbollide) ion.
Radiochimica acta. Roč. 101, č. 1 (2013), s. 27-31. ISSN 0033-8230
R&D Projects: GA ČR GA104/09/0668
Institutional support: RVO:61388980
Keywords : liquid-liquid extraction * lanthanides * actinides * N-phosphorylated bis-ureas * chlorinated cobalt bis(dicarbollide) ion * high level liquid waste
Subject RIV: CA - Inorganic Chemistry
Impact factor: 1.411, year: 2013

Extraction of Eu(111) with a synergistic mixture of polydentate N-phosphorylated bis-ureas with the general formula (i-PrO)(2)P(O)NHC(O)NHXNHC(O)NHP(O)(Oi-Pr)(2) (X = (CH2)(7), (CH2)(2)O(CH2)(2) and (CH2)(2)O(CH2)(2)O(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.
Permanent Link: http://hdl.handle.net/11104/0221015