Alkyl (N,N-dibutylcarbamoylmethyl)methylphosphinates as new reagents for extraction and sorption of f-elements and technetium(VII) from acidic solutions
Alkyl (N,N-dibutylcarbamoylmethyl)methylphosphinates as new reagents for extraction and sorption of f-elements and technetium(VII) from acidic solutions
作者:V. P. Morgalyuk、N. N. Popova、O. I. Artyushin、E. V. Sharova、I. G. Tananaev、E. E. Nifant´ev
DOI:10.1007/s11172-014-0773-6
日期:2014.11
Liquid-phase extraction and sorption (solid-phase extraction) of AmIII, EuIII, UVI, and TcVII with alkyl (N,N-dibutylcarbamoylmethyl)methylphosphinates (ADM) from nitric acid solution were studied. The solvate numbers of extracted UVI, AmIII, EuIII, and TcVII complexes and the separation factors for AmIII/EuIII (f Am/Eu), TcVII/EuIII (f Tc/Eu), and UVI/TcVII (f U/Tc) pairs were determined. It was shown for the extraction of AmIII and sorption of PuIV that various ADM derivatives are most efficient for the extraction and sorption concentration of actinides: the heptyl derivative (C7) is efficient for extraction and the decyl derivative (C10) is most efficient for sorption.
IR and 31P NMR spectroscopic study of complexation of carbamoyl methyl phosphinates with UVI and ThIV in nitric acid solutions
作者:T. A. Mastryukova、O. I. Artyushin、M. P. Pasechnik、E. V. Sharova、I. L. Odinets、V. P. Morgalyuk、I. G. Tananaev、G. V. Myasoedova、B. F. Myasoedov
DOI:10.1007/s11172-006-0152-z
日期:2005.11
composition of complexes formed upon the extraction of UVI and ThIV nitrates with O-n-nonyl(N,N-dibutylcarbamoylmethyl) methyl phosphinate (L) from solutions of nitric acid without additional solvent was determined by 31P NMR spectroscopy. The structures of the complexes formed were studied by IR spectroscopy. Uranium(VI) is extracted from 3 and 5 M solutions of HNO3 as the [UO2(L)2(NO3)2] complex, while thorium(IV)
用 31P NMR 光谱法测定在没有额外溶剂的情况下从硝酸溶液中用壬基(N,N-二丁基氨基甲酰基甲基)甲基次膦酸 (L) 提取 UVI 和 ThIV 硝酸盐时形成的复合物的组成。通过红外光谱研究了形成的配合物的结构。从 3 和 5 M HNO3 溶液中提取铀 (VI) 作为 [UO2(L)2(NO3)2] 络合物,而钍 (IV) 从 5 M HNO3 中提取作为 [Th(L)3(NO3) )3]+·NO3- 络合物。在这两种情况下,配体 L 都具有双齿配位。配体 L 与 3 M 和 5 M 硝酸接触,分别形成加合物 L·HNO3 和 L·(HNO3)2。