【摘要】 研究了Ｎ，Ｎ，Ｎ’，Ｎ’－四丁基丙二酰胺（ＴＢＭＡ）以甲苯为稀释剂，从硝酸介质中萃取硝酸和铀（Ⅵ）的机理。在该萃取体系中，ＴＢＭＡ和 ＨＮＯ_３形成 ＴＢＭＡ· ＨＮＯ_３，和 Ｕ（Ⅵ）形成为 ＵＯ_２（ＮＯ_３）_２· ３ＴＮＭＡ。借助红外光谱分析，确定了在萃合物中ＮＯ_３^－不参与ＵＯ_２^２＋的直接配位，并对萃合物中配体的配位方式进行了讨论。更多还原

【Abstract】 The extraction mechanism of HNO₃ and UO₂²⁺ with TBMA in toluene from the nitric acid medium has been studied. At the experimental condition, HNO₃ and TBMA can form HNO₃ TBMA, and the composition of extracted species is UO₂（NO₃） 2. 3TBMA. It was testified that the in the xtraction species UO₂（NO₃） ₂. 3TBMA, NO₃^- did not directly participate in coordination of uranyl （Ⅵ） ion by IR, and the coordination mode of the complex was also discussed.更多还原