Effect of the counterion on the selectivity of lanthanides by 1,10-phenanthroline carboxamide derivatives

Simonnet, M.   ; 小林 徹 ; 横山 啓一  ; 矢板 毅

Simonnet, M.; Kobayashi, Toru; Yokoyama, Keiichi; Yaita, Tsuyoshi

Lanthanides are especially difficult to separate from each other due to their similar chemical behavior. However, ensuring high elemental purity is necessary for most industrial applications. 1,10-phenanthroline carboxamide compounds showed good results towards selective lanthanide separation in nitric acid medium. Here, we report the change in selectivity that occurs when modifying the counterion.