Počet záznamů: 1

Anionic alkyl diglycoldiamides with covalently bonded cobalt bis(dicarbollide)(1-) ions for lanthanide and actinide extractions

  1. 1.
    0354861 - UACH-T 2011 RIV CH eng J - Článek v odborném periodiku
    Grüner, Bohumír - Kvíčalová, Magdalena - Selucký, P. - Lučaníková, M.
    Anionic alkyl diglycoldiamides with covalently bonded cobalt bis(dicarbollide)(1-) ions for lanthanide and actinide extractions.
    Journal of Organometallic Chemistry. Roč. 695, č. 9 (2010), s. 1261-1264 ISSN 0022-328X
    Grant CEP: GA MŠk LC523; GA ČR GA104/09/0668
    Grant ostatní: European Commision(XE) F16W-CT-2003-508854
    Výzkumný záměr: CEZ:AV0Z40320502
    Klíčová slova: carboranes * metallaboranes * dicarbollides * TODGA
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 2.205, rok: 2010

    Ionic diamides composed of a N,N'-dialkyl diglycolyl complexing group and two cobalt bis(dicarbollide)(1-) anions were synthesized with the aim to develop efficient extraction agents for liquid-liquid extraction of polyvalent cations, i.e. lanthanides and actinides from high-level activity nuclear waste. The study resulted in the observation that the compounds are significantly (2-3 orders in magnitude) more efficient extractants for Eu(III) and Am(III) than synergic mixtures of organic N, N'-tetra n-octyl diglycolic acid diamide (TODGA) and chlorinated cobalt bis(dicarbollide) at the same concentrations of both groups. Low polar mixtures of n-dodecane (D) and hexyl methyl ketone (HMK) can be applied as an auxiliary solvent for extraction, replacing thus the polar and less environmentally friendly nitro-, fluoro- and chloro-solvents used in the current dicarbollide liquid-liquid extraction process.
    Trvalý link: http://hdl.handle.net/11104/0193769