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This invention describes a new class of amphiphilic chelators (extractants) that can selectively separate large, light rare earth elements from heavy, small rare earth elements in solvent extraction schemes.
Separation of rare earth containing ores is often approached via froth floatation; however, for successful flotation, ligands must be designed that can both bind to the mineral interface while being amphiphilic enough to drag the minerals to an air-aqueous interface.