【摘要】 研究了五种冠醚的1,2-二氯乙烷溶液从盐酸水溶液中萃取铀(VI)的行为。实验表明,铀(VI)分配比与水相盐酸浓度、LiCl浓度、有机相冠醚浓度有关。用斜率法和等摩尔系列法确定了18-冠-6、二苯并-18-冠-6、二苯并-24-冠-8、二环己基-18-冠-6、二环己基-24-冠-8与铀(VI)萃合物的组成比,并求得它们的萃取平衡常数。更多还原

【Abstract】 The extraction behaviour of uranium（VI） with five crown ethers in 1,2-dichloroethane from hydrochloric acid aqueous solution is studied. Theexperimental results indicate that the distribution ratio of uranium（VI） is relatedwith the concentration of hydrochloric acid, lithium chloride in aqueous phase,and the concentration of crown ethers in organic phase. Using slope method andequimolar series method, the extractive compounds are identified. The extractionequilibrium constants （K） are: K_18C6=0.093, K_DB18C6=0. 069 K_DB24C8=0.086, K_DCH18C6=37.1, K_DCH24C8=39.7 （μ=5.0, 15℃）更多还原