LITHIUM ISOTOPE SEPARATING AGENT AND SEPARATION OF LITHIUM ISOTOPE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a novel lithium isotope separating agent excellent in separation performance of lithium isotope and a method for efficiently separating lithium isotope using the same. ;SOLUTION: The lithium isotope separating agent is composed of monensin or the derivative expressed by a formula (in the formula, each of R¹-R⁴ represents hydrogen atom or hydrocarbon group) and the separating method is by allowing the lithium ion aq. solution, which contains ⁶Li and ⁷Li and is adjusted alkaline, to contact with a water immiscible organic solvent containing the separating agent and transferring a part of lithium ion to the organic solvent to increase the ratio of ⁷Li to ⁶Li in lithium ions remaining in an aq. solution. And the separating method of lithium isotope is by continuously transferring lithium ion in the alkaline adjusted lithium ion-containing aq. solution to an acidic adjusted aq. solution through a liquid film composed of the water immiscible organic solvent to obtain an aq. solution containing lower ⁷Li than ⁶Li.;COPYRIGHT: (C)1999,JPO