The radiolytic behavior and mechanism of calixarene crown ether under γ-irradiation

作     者：AO YinYong PENG Jing ZHANG YouWei YUAN LiYong YU ChuHong LI JiuQiang ZHAI MaoLin 

作者机构：Beijing National Laboratory for Molecular Sciences (BNLMS) Department of Applied Chemistry College of Chemistry and Molecular Engineering Peking University Institute of High Energy Physics Chinese Academy of Sciences 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2013年第58卷第14期

页      面：1663-1669页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (91126014, 11079007, 21073008) Research Fund for the Doctoral Program of Higher Education of China (20100001110021) 

主　　题：行为 冠醚 机制 杯芳烃 异丙氧基 辐射稳定性 烷基化反应 酚羟基 

摘      要：Bis(2-propyloxy)calix[4]crown-6 (BPC6) is an effective separation agent for cesium removing from spent nuclear fuel. The study on radiolytic behavior of BPC6 itself under γ-irradiation was required for evaluating its feasibility of practical application. It was found that BPC6 exhibited excellent radiation stability at dose less than 100 kGy. However, the isopropyl groups in BPC6 under- went oxidation and dealkylation to form carbonyl groups and phenolic hydroxyl groups at dose above 300 kGy, respectively. When the dose was more than 1000 kGy, the ring opening of crown ether structure of BPC6 resulted in the formation of phenolic hydroxyl groups as well. The formation of radiolytic products containing phenolic hydroxyl groups during the irradiation of BPC was confirmed by using FeCl 3 as a probe. Combining with the radiolytic behavior of two model chemicals (1-isopropoxybenzene and benzo-18-crown-6 ether), the radiolytic behavior and mechanism of BPC6 under -irradiation was testified further.