ChemInform Abstract: Solvation and Hydration in Solvent Extraction

Abstract

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

“…Several hydrometallurgical processes based on the use of extractants containing amidic groups have been designed during the last decades for the extraction of trivalent a-emitters. The currently most studied processes are based on malonamides (DIAMEX process) [1][2][3][4][5] or (N,N-dialkyl-carbamoylmethyl)-dialkyl phosphine oxides (CMPO) (TRUEX process) [5][6][7][8][9][10] as the organic ionophores. More recently, another efficient extractant, N,N,N 0 ,N 0 -tetra(n-octyl)-3-oxapentane-1,5-diamide (tetra-n-octyl-diglycolamide, TODGA) [11,12], has appeared among them to attain great attention due to good efficiency and high stability (ARTIST process).…”

Cobalt bis(dicarbollide) ions functionalized by CMPO-like groups attached to boron by short bonds; efficient extraction agents for separation of trivalent f-block elements from highly acidic nuclear waste

“…Assumed possibility is to separate the most harmful radionuclides by hydrometallurgical process, i.e. by liquid-liquid extraction [1][2][3][4][5][6][7][8].…”