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通过取代反应一步合成了一类对轻稀土离子萃取效率高,且具有一定选择性的杯[8]芳烃磷酸酯衍生物。研究结果表明,杯[8]芳烃磷酸酯衍生物对轻稀土La和Ce离子的萃取率可高达98%;与杯[8]芳烃相比,在相同条件下萃取率可提高10%。在一定的萃取条件下,杯[8]芳烃磷酸酯衍生物对La的萃取率比对Ce的萃取率高6%。若利用多级离心萃取分馏,可望实现对La和Ce离子的高效萃取分离。
A new class of calix [8] arene phosphate derivatives with high selectivity to light rare earth ions was synthesized by substitution reaction. The results show that the extraction rate of calix [8] arene phosphate derivatives can reach as high as 98% for the light rare earth La and Ce ions. Compared with calix [8] arene, the extraction rate can be increased by 10% under the same conditions. Under certain extraction conditions, the extraction yield of calix [8] arene phosphate derivatives to La was 6% higher than that of Ce. If the use of multi-stage centrifugal extraction fractionation, is expected to achieve efficient extraction of La and Ce ions separation.