| 摘要 |
<p><P>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. <P>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. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
