A polyazamacrocycle extractant for the extraction of americium and europium  

作　　者：Dengfang Pan Cai Jia Xihong He Gang Ye Jing Chen 

机构地区：[1]Institute of Nuclear and New Energy Technology, Tsinghua University [2]Institute of Process Engineering, Chinese Academy of Sciences

出　　处：《Science China Chemistry》2015年第6期986-992,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(91226110);the Program for Changjiang Scholars and Innovative Research Team in University

摘　　要：In recent years, a great deal of interest has been focused on nitrogen-containing extractants for the separation of actinides from lanthanides. In this study, we synthesized a polyazamacrocycle-type C8-cyclen ligand comprising four tertiary alkyl amino groups, for the extraction of Am3+ and Eu3+. The C8-cyclen demonstrated a weak ability to extract and separate Am3+ and Eu3+ that increased with the increasing "softness" of the aqueous anions. The extraction behavior of Am3+ and Eu3+ indicated coordination interactions between the C8-cyclen and the Am3+ and Eu3+ ions. The suppression of Am3+ or Eu3+ extraction by acid depended on the media anions involved.In recent years, a great deal of interest has been focused on nitrogen-containing extractants for the separation of actinides from lanthanides. In this study, we synthesized a polyazamacrocycle-type C8-cyclen ligand comprising four tertiary alkyl amino groups, for the extraction of Am3＋ and Eu3＋. The C8cyclen demonstrated a weak ability to extract and separate Am3＋ and Eu3＋ that increased with the increasing ＂softness＂ of the aqueous anions. The extraction behavior of Am3＋ and Eu3＋ indicated coor- dination interactions between the C8-cyclen and the Am3＋ and Eu3＋ ions. The suppression of Am3＋ or Eu3＋ extraction by acid depended on the media anions involved.

关 键 词：polyazamacrocycle extractant AMERICIUM EUROPIUM EXTRACTION 

分 类 号：O626[理学—有机化学] O658.2[理学—化学]