| 简介 |
PROBLEM TO BE SOLVED : To provide an extractant for solvent extraction, which has a high capability of selectively separating a desirable rare-earth metal from a system in which a plural kinds of rare earth metals are mixed.
SOLUTION : It is possible to effectively and selectively extract the rare earth metal by conducting the solvent extraction which combines 4-isopropyltropolone with 1, 10-phenanthroline. The solvent to be used for the extraction is preferably toluene.
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