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利用冠醚分离锂同位素的研究工作已有一些报道。在锂盐冠醚络合物化学交换体系中冠醚结构,特别是冠醚环的大小与锂离子的匹配效应将影响同位素的分离效果。文献[4]中指出,Li~+的晶体半径为6.0nm,而其配位半径为9.0nm,故与15-冠-5(冠醚环半径为8.5—
There are some reports on the research on the separation of lithium isotopes using crown ethers. In the lithium salt crown ether complex chemical exchange system crown ether structure, especially the crown ether ring size and lithium ion matching effect will affect the separation of isotope effect. It is pointed out in [4] that the crystal radius of Li ~ + is 6.0 nm and the radius of its coordination is 9.0 nm, which is in agreement with that of 15-crown-5 (the crown ether ring has a radius of 8.5-