Preface; Contents; Contributors; Part I: Introduction; Chapter 1: Ionic Liquids in the Context of Rare Earth Separation and Utilization; 1.1 Rare Earths; 1.2 Overview of REs Resources and Associated Issues; 1.2.1 Primary Resource; 1.2.1.1 Bastnasite; 1.2.1.2 Monazite; 1.2.1.3 Ion-Absorbed RE Deposit; 1.2.2 Secondary Resource; 1.2.3 Advanced Nuclear Fuel System; 1.3 Separation History of REs; 1.3.1 Hazardous Issues Associated with Organic Dilute; 1.3.2 Overview of the Defects of Organic Extractant; 1.4 Ionic Liquids in RE Separation; 1.4.1 Introduction of Ionic Liquids; 1.4.2 Why Choose ILs?

1.4.3 Uniqueness of ILs for the Separation1.4.3.1 ILs Used as Solvent; 1.4.3.2 ILs Used as Extractant; 1.5 Solid-Liquid Separation Systems; 1.6 IL-Based RE Functional Materials; 1.7 Outlook; References; Part II: Chemistry of Ionic Liquids with Rare Earth; Chapter 2: Using Crystal Structures of Ionic Compounds to Explore Complexation and Extraction of Rare Earth Elements in Ionic ...; 2.1 Introduction; 2.2 Inner-Sphere Interactions Between Metal Ions and Ionic Liquid Extractants: Bis(O,O-ethyl)dithiophosphate

2.3 Inner- and Outer-Sphere Interactions in a Fully Ionic Environment: 1,2-di(4-Pyridyl)ethylene2.4 Ionic Interactions Between Charged Complexes of Different Metals: [Tb(NO3)2(OH2)5][Th(NO3)5(OH2)2]; 2.5 Conclusions; References; Part III: Ionic Liquids for the Extraction and Separation of Rare Earth; Chapter 3: Separating Rare-Earth Elements with Ionic Liquids; 3.1 Introduction; 3.2 Preparation of Ionic Liquids for Extraction; 3.2.1 Synthesis Methods; 3.2.2 Purification Methods; 3.3 Properties of Ionic Liquids for Extraction; 3.3.1 Volatility, Thermal Stability, and Flammability

3.3.2 Viscosity3.3.3 Solubility and Degradation; 3.4 Recycling Rare-Earth Elements with Ionic Liquid-Based Extractants; 3.4.1 Solvent Extraction Separation of La3+ and Ba2+; 3.4.2 TALSPEAK-Like Extraction of REEs with Task-Specific ILs; 3.4.3 Mechanism Study of TALSPEAK-Like Extraction of REEs; 3.4.4 Extracting REEs from Aqueous Solution with Methylimidazole in Ionic Liquids; 3.5 Conclusions; References; Chapter 4: Ionic Liquid-Based Extraction and the Application to Liquid Membrane Separation of Rare Earth Metals; 4.1 Introduction; 4.2 Extraction System for Rare-Earth Metals Using ILs

4.2.1 Extraction Using Industrial Extractants4.2.2 Extraction Using a Novel Extractant; 4.2.3 Application of IL DODGAA System; 4.3 IL-Based Liquid Membrane System; 4.4 Conclusions; References; Chapter 5: Application of Ionic Liquid Extractants on Rare Earth Green Separation; 5.1 General; 5.2 Preparation and Classification of ILs for REEs Separation; 5.2.1 General Terms and Signs for Extraction Procedure; 5.2.1.1 Distribution Ratio (D); 5.2.1.2 Extraction Efficiency (E%); 5.2.1.3 Separation Factor (beta); 5.2.1.4 Stripping Ratio (St); 5.2.2 Preparation of Bif-ILEs