标题：Synergistic extraction of uranium(VI) with primary amine N-1923 and TOPO
作者：Yang, YH; Sun, SX; Xue, SY; Yang, YZ; Bao, BR
作者机构：[Yang, YH; Sun, SX; Xue, SY; Yang, YZ; Bao, BR]Shandong Univ, Dept Chem, Jinan 250100, Peoples R China.;[Yang, YH; Sun, SX; Xue, SY; Yan 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：The synergistic extraction of uranium(VI) from sulfuric acid solution with primary amine N-1923 and tri-octylphosphine oxide (TOPO) in n-heptane was studied. When the mole ratio of primary amine N-1913 and TOPO is about 2:1, the distribution coefficient will be the maximum. This result shows that primary amine N-1923 and TOPO could exhibit the distinct synergistic effect for extraction of uranium(VI) from sulfuric acid solution. From the results of the extraction, it was suggested that the composition of synergistic extraction species is (RNH3)UO2(SO4)(2) . TOPO. The equilibrium constant (K-12) of synergistic extraction reaction has been evaluated, to be 1.07.10(9). In addition, the integration phenomenon of N-1923 and TOPO have been discussed, the integration constant (K-3) is 1.60.10(2).