Extraction of americium and europium with functionalized thiacalix[4]arenes from alkaline solutions

被引：8

作者：

Smirnov I.V. ^{[1
,2
,3
]}

Karavan M.D. ^{[1
,3
]}

Stepanova E.S. ^{[1
,2
]}

Kal’chenko V.I. ^{[4
]}

机构：

[1] Khlopin Radium Institute, 2-i Murinskii pr. 28, St. Petersburg

[2] Ozersk Institute of Technology, Branch of Moscow Engineering Physics Institute, National Research Nuclear University, pr. Pobedy 48, Ozersk, Chelyabinsk oblast

[3] St. Petersburg State University, Universitetskaya nab. 7–9, St. Petersburg

[4] Institute of Organic Chemistry, National Academy of Sciences of Ukraine, vul. Murmans’ka 5, Kyiv

来源：

Radiochemistry | 2016年 / 58卷 / 06期

关键词：

alkaline solutions; americium; europium; extraction; functionalized thiacalix[4]arenes;

D O I：

10.1134/S1066362216060084

中图分类号：

学科分类号：

摘要：

The extraction of 241Am and 152Eu from alkaline carbonate solutions with solutions of functionalized thiacalix[4]arenes in m-nitrobenzotrifluoride was studied. The dependence of the radionuclide distribution ratios and separation factors on pH of the aqueous phase in the interval from 10 to 13.5, kind of the organic diluent, and position and electronic characteristics of functional groups in the thiacalixarene platform was examined. The composition of the extractable solvates of Am and Eu with functionalized thiacalix[4]arenes was determined by slope analysis. The hydrolytic stability of tert-butylthiacalix[4]arene in alkaline and acid solutions was evaluated. Thiacalix[4]arenes efficiently extract Am from alkaline solutions. The bromine-substituted thiacalix[4]arene exhibits the maximal selectivity, with the Am/Eu separation factor in extraction with this agent exceeding 30. © 2016, Pleiades Publishing, Inc.

引用

页码：617 / 624

页数：7

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