Effective separation of lithium isotopes (⁶Li and ⁷Li) is a significant challenge in developing clean nuclear energy. In this work, ⁷Li was separated and enriched by 10-hydroxybenzoquinoline using flotation complexation extraction under alkaline conditions. In addition, the thermodynamic process of lithium isotope separation was discussed and the separation mechanism was explained by theoretical calculation according to density functional theory. Finally, the conditions of the Li⁺ stripping process were investigated. The results showed that the single-stage separation factor was 1.023 ± 0.001, and the abundance of ⁷Li reached 92.72%. The stripping ratio of lithium reached 98% by stripping five times using pure water.

锂同位素（⁶ Li和⁷ Li）的有效分离是开发清洁核能的重大挑战。在这项工作中，在碱性条件下采用浮选络合萃取 10-羟基苯并喹啉对^{7 Li 进行了分离和富集。}此外，还讨论了锂同位素分离的热力学过程，并根据密度泛函理论通过理论计算解释了分离机理。最后，研究了锂离子剥离工艺的^条件。结果表明，单级分离因子为1.023±0.001，丰度为⁷李达92.72%。使用纯水进行5次反萃取，锂的反萃取率达到98%。