标题：Extraction of uranium(VI) through reversed micelle by primary amine N-1923
作者：Yang, YH; Sun, SX; Xue, SY; Yang, ZK; Wang, YS; Bao, BR
作者机构：[Yang, YH; Sun, SX; Xue, SY; Yang, ZK; Wang, YS; Bao, BR]Shandong Univ, Dept Chem, Jinan 250100, Peoples R China.;[Yang, YH; Sun, SX; Xu 更多
通讯作者地址：[Yang, YH]Shandong Univ, Dept Chem, Jinan 250100, Peoples R China.
来源：JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
摘要：A study on extraction of uranium (VI) from sulfuric acid media by the primary amine N-1923 in chloroform is described. Extraction coefficients of uranium(VI) as a function of aqueous H2SO4 concentration, extractant concentration and temperature have been studied. From the data, the compositions of extracted species, equilibrium constants and enthalpies of extraction reaction have been evaluated. A new extraction mechanism of amine has been suggested, that is the formation of reversed micelle as a result of the aggregation of ammonium salt in the organic phase of the extraction. This assumption may be used for interpreting extraction data satisfactorily, which can not be explained by the slope analysis method.