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Europium and samarium separation using ion exchange between molten salts and beta“-alumina...

by Kristian G Myhre, Justin Knowles, Miting Du
Publication Type
Journal Name
Separation Science and Technology
Publication Date

The separation of Eu and Sm from each other is made difficult by their shared preference to be a trivalent cation as well as their similar ionic radii. A new approach to separating Eu and Sm using ion exchange reactions between molten salts and a solid electrolyte, beta″-alumina, has been demonstrated. The highest separation factor achieved was greater than 30. However, the Eu extraction efficiency was low. The highest Eu extraction efficiency achieved was 51.8% ± 2.6 with a separation factor of 4.70 ± 0.46.