Properties and Uses of Nitrogen and Sulfur Donors Ligands in Actinide Separations
Properties and Uses of Nitrogen and Sulfur Donors Ligands in Actinide Separations
复制标题
氮和硫供体配体在锕系元素分离中的性质和用途
DOI：
10.1021/bk-1980-0117.ch010
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
C. Cuillerdier
中科院分区：
文献类型：
--
作者：
C. Musikas;G. Marois;R. Fitoussi;C. Cuillerdier
Most of the complexing agents used in actini'Je separations are oxygen donor ligands {T_. 2). because of the hard acceptor character of the jF series ions. The aqueous complexes of ligands of which the donor atoms are less electronegative than oxygen (Pauling's electronegativity 3.5 J are wean, because of the competition with water for the coordination sites of the metal. However, unusual actinide separations involving these weak complexes have been performed. For instance, the group of trivalent larttnanide ions has been separated from trivalent actinides by using concentrated aqueous chloride media (electronegativity 3.0) from which trivalent actinide ions ara selectively absorbed in anion exchanga resins (3_) or extracted by organic solutions of tri or tetraalKylamonnium chloride, salts M). 4f-⣠zroup separation is also possible by using arjueous thiocyanate solutions, where the trivalent actinids ion can be selectively extracted in an organic solution of tetra3lkylammonii.. ri thiocyanatt (jâ) cr fixed on an anion exchange resin (£).
