Bing-hui Liu, Su Wang, Yongzhong Jia
Dec 1, 2018
Citations
0
Influential Citations
14
Citations
Journal
Journal of Molecular Liquids
Abstract
Abstract A green and efficient ionic liquid-anisole extraction system was employed for the separation of lithium isotopes by comparing 4‑aminobenzo‑15‑crown‑5 (4‑NH2‑B15C5), 4‑nitrobenzo‑15‑crown‑5 (4‑NO2‑B15C5) and benzo‑15‑crown‑5 (B15C5) extraction agents. The results of the effects of crown ether substituents, crown ether concentration and lithium salt anion on solvent extraction indicated that the molar ratio of crown ether and lithium ion complex is 2:1 and the order of the extraction efficiency in three extraction agents was 4‑NH2‑B15C5 > B15C5 > 4‑NO2‑B15C5. Furthermore, the single-stage separation factor α for 6Li/7Li obtained in present work was 1.032 and maximum abundance of 6Li in organic phase was reached 7.762% in the extraction system of LiI/4‑NO2‑B15C5‑ILs.