CIESC Journal ›› 2020, Vol. 71 ›› Issue (10): 4379-4394.doi: 10.11949/0438-1157.20200677

• Reviews and monographs • Previous Articles     Next Articles

Application of ionic liquid in extraction and separation of rare earth

Daoguang WANG1,2(),Junfeng WANG1,2(),Xiangping ZHANG1,2,Yilin WANG3,Xiaofei ZHANG3   

  1. 1.Beijing Key Laboratory of Ionic Liquids Clean Process/State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
    2.Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China
    3.State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
  • Received:2020-06-02 Revised:2020-08-13 Online:2020-10-05 Published:2020-08-15
  • Contact: Junfeng WANG;


The extraction and separation of rare earth elements is one of the key steps to obtain high-purity single rare earths. The development of new materials and new processes with high-efficiency separation capabilities for rare earth elements is a hot spot for scientific and technological workers worldwide. As a representative new material, ionic liquid has unique physical and chemical properties such as non-volatile, non-flammable, good stability, and adjustable structural properties. In recent years, its application in the field of rare earth element extraction and separation has received extensive attention.This paper provides a systematical review of the publications in recent years reporting the application of ILs in extraction and separation of rare earth (RE) that is essential to obtain high-purity RE products. The ILs-based extraction and separation by use of non-functional and/or functional ILs were here reviewed and discussed in terms of extraction/stripping behaviors, separation performance and mechanisms. The challenges and future directions for the development and application of ILs-based extraction on RE separation were discussed finally.

Key words: rare earth, extraction, separation, ionic liquid, green technology, synergistic system

CLC Number: 

  • TQ 028.8
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