Effect of Benzyltriethylammonium Di-2-ethylhexyl Sulfosuccinate on the Extraction of Lanthanides(III) from Nitric Acid Solutions with Bis(diphenylphosphorylmethylcarbonylamino)alkanes
A. N. Turanov, V. K. Karandashev, O. I. Artyushin, E. V. Sharova
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引用次数: 0
Abstract
The efficiency of the lanthanide(III) extraction from nitric acid solutions with bis(diphenylphosphorylmethylcarbonylamino)alkane (bis-CMPO) solutions in organic solvents significantly increases in the presence of an ionic liquid, benzyltriethylammonium di-2-ethylhexyl sulfosuccinate ([N222Bn]SSu), in the organic phase. The lanthanide(III) distribution ratios in the extraction from 3 M HNO3 solution with bis-CMPO solutions in dichloroethane increased by more than two orders of magnitude in the presence of [N222Bn]SSu. Lanthanide(III) ions are extracted with mixtures of bis-CMPO and the ionic liquid in organic solvents via the cation-exchange mechanism. The influence of the structure of bis-carbamoylmethylphosphine oxides, kind of organic diluent, and HNO3 concentration in the aqueous phase on the efficiency of the metal ion extraction into the organic phase containing the ionic liquid is discussed.
在有机溶剂中加入离子液体苄基三乙基铵二-2-乙基己基磺基琥珀酸盐（[n2220亿]SSu）时，用双（二苯基磷酸基甲基羰基氨基）烷烃（双- cmpo）溶液从硝酸溶液中萃取镧系元素（III）的效率显著提高。在[n2220亿]SSu的存在下，用双cmpo溶液从3 M HNO3溶液中萃取出的镧系元素（III）的分布比在二氯乙烷中增加了两个数量级以上。在有机溶剂中，用双cmpo和离子液体的混合物通过阳离子交换机制提取镧系（III）离子。讨论了双氨基甲酰甲基膦氧化物的结构、有机稀释剂的种类和水相中HNO3浓度对金属离子萃取到含离子液体的有机相中效率的影响。
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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