二叔丁基二环己基-18-冠-6的合成及其对锶的萃取  

Synthesis of Di-Tert-Butyldicyclohexyl-18-Crown-6 and Its Extraction of Strontium

作　　者：王婧 曹世权 朱杉 颜玉芳 晏敏皓 WANG Jing;CAO Shi-quan;ZHU Shan;YAN Yu-fang;YAN Min-hao(State Key Laboratory of Environmentally Friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;School of Materials and Chemical,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan Changyan Technology Co.,Ltd.,Mianyang 621000,China;School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]西南科技大学环境友好能源材料国家重点实验室,四川绵阳621010 [2]西南科技大学材料与化学学院,四川绵阳621010 [3]四川长晏科技有限公司,四川绵阳621000 [4]中国科学技术大学核科学技术学院,安徽合肥230026

出　　处：《核化学与放射化学》2024年第2期158-169,I0006,共13页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金大科学装置联合基金项目(U1932117);四川省科技厅重点研发项目(21ZDYF4034)。

摘　　要：^(90)Sr(T_(1/2)=28.9 a)是一种具有高释热性和强放射性的高毒性核素,高放废液在进行处置之前必须准确测量放射性废液中^(90)Sr的含量,而将^(90)Sr从放射性废液中分离出来是其准确测量的关键。本工作通过改变合成反应路径和优化合成反应参数,解决了二叔丁基二环己基-18-冠-6(DtBuCH18C6)合成反应存在的加氢危险、纯化困难的问题,实现了高纯度产品的合成;而后采用溶剂萃取法,以DtBuCH18C6为萃取剂,分别研究稀释剂种类、萃取剂浓度、硝酸浓度、相比等条件对Sr^(2+)萃取性能的影响,以此来确定Sr^(2+)选择性分离的最佳萃取条件,建立一种有效的快速分离Sr^(2+)的方法,为后续提取^(90)Sr提供了一种可供选择的材料。^(90)Sr(T_(1/2)=28.9 a)is a highly toxic nuclide with high heat release and strong exothermic properties,and the content of^(90)Sr in radioactive waste must be accurately measured before disposal.The separation of^(90)Sr from radioactive waste is the key to accurate measurement.By changing the synthesis reaction path and optimizing the synthesis reaction parameters,this work solves the problems of hydrogenation hazard and purification difficulties in the synthesis reaction of di-tert-butyldicycloh-exyl-18-crown-6(DtBuCH18C6),and achieves the synthesis of high purity products.Using DtBuCH18C6 as the extraction agent,the solvent extraction method was used to study the effects of diluent type,extractant concentration,nitric acid concentration and organic to aqueous phase ratio on the strontium extraction performance,so as to determine the optimal extraction conditions for the selective separation of Sr^(2+),and establish an effective and rapid separation method for Sr^(2+),which laid a foundation for the future extraction of^(90)Sr from the high-level waste liquid.

关 键 词：高放废液 DtBuCH18C6 合成 萃取 ^(90)Sr 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护] O615.11[理学—无机化学]