College of Chemical and Engineering;
Zhengzhou University;
Zhengzhou 450001;
China;
CAS Key Laboratory of Green Process and Engineering;
State Key Laboratory of Multiphase Complex Systems;
Beijing Key Laboratory of Ionic Liquids Clean Process;
Institute of Process Engineering and Innovation Academy for Green Manufacture;
Chinese Academy of Sciences;
Beijing 100190;
China;
Ganjiang Innovation Academy;
Chinese Academy of Sciences;
Ganzhou 341000;
China;
College of Chemistry;
Nanchang University;
Nanchang 330031;
China;
rare earth element; different magnetic moment; magnetic separation; ionic liquid;