Part I Introduction.- Ionic Liquids in the Context of Rare Earth Separation and Utilization.- Part II Chemistry of Ionic Liquids with Rare Earth.- Structural Studies of Rare Earth Salts Isolated From High Ionic Strength Media: The Importance Of Ionicity in Ionic Liquids Separations.- The Coordination Chemistry of Ionic Liquids and Rare Earth.- Solvation Microdynamics and Quantum Chemistry Modeling of Rare Earth in Ionic Liquid by NMR Method.- Part III Ionic Liquids for the Extraction and Separation of Rare Earth.- Actinide and Lanthanide Separations from Rare-Earth Fission Products by Ionic Liquids.- Extraction of Rare-Earth Ions Using Ionic Liquids as Solvent.- Ionic Liquids for Rare Earth Separation.- Part IV Electrodeposition of Rare Earth Metal in Ionic Liquids.- Electrodeposition of Rare Earth Metal in Ionic Liquids.- Part V Ionic Liquids for Rare Earth Utilization.- Ionic Liquids and Rare Earth Soft Photoluminescence Materials.- Preparation of Rare Earth Functional Materials in Ionic Liquids.