Separation of middle rare earths by solvent extraction using 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester as an extractant  

作　　者：Danilo Fontana Loris Pietrelli 

机构地区：[1]ENEA,Italian National Agency for New Technologies,Energy and the Environment Via Anguillarese 301,I-00123 Roma,Italy

出　　处：《Journal of Rare Earths》2009年第5期830-833,共4页稀土学报（英文版）

摘　　要：The extraction of the trivalent middle rare earths from chloride media by kerosene solutions of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester as an extractant was studied. The separation factors between the elements using solution simulating wastes from NiMH spent batteries have been evaluated: the order of the extractive ability of extractant can be confirmed in Tb>Gd>Eu>Sm.The extraction of the trivalent middle rare earths from chloride media by kerosene solutions of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester as an extractant was studied. The separation factors between the elements using solution simulating wastes from NiMH spent batteries have been evaluated: the order of the extractive ability of extractant can be confirmed in Tb>Gd>Eu>Sm.

关 键 词：solvent extraction rare earths SEPARATION 

分 类 号：TG146.45[一般工业技术—材料科学与工程]