Use of Selective Inorganic Ion Exchangers for the Separation of Rare Earths
Presented is a preliminary study of the adsorption of lanthanides on several types of inorganic ion exchangers. The exchangers used are a proton form of Na4Ti9O20, Zr(C6H4P2O6)x(HPO4)2−2x·xH2O (ZrMPP), and Zr(C12H8P2O6)x(HPO4)2−2x·xH2O (ZrBPP). The distribution coefficient for some of the lanthanide ions on these materials suggest that they can be used to remove lanthanide ions from solutions containing alkali and alkaline earth metal ions, and can also be used for separation of the individual lanthanide ions by column experiments.
KeywordsColumn Experiment Zirconium Phosphate Sodium Titanate Diphosphonic Acid Trialkyl Phosphite
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