α-取代亚磺酰基乙酸丁酯的合成及对铀(Ⅵ)的萃取

Synthesis of α-Sulfinyl-Butylacetates and Extraction of U(Ⅵ)

摘要: 合成了3个α-取代亚磺酰基乙酸丁酯(SBAB)，并研究了在硝酸介质中不同稀释剂、水相酸度、萃取剂浓度、萃取温度等对硝酸铀酰萃取性能的影响。结果表明, α-取代亚磺酰基乙酸丁酯系列化合物可以有效地从硝酸介质中萃取UO₂²⁺；取代基为烷基的萃取剂对U(Ⅵ)的萃取效果要优于取代基为芳环的结构；萃取反应为放热反应。

Abstract: Three new extractants, α-sulfinyl-butylacetates (SBAB), were synthesized and were used to extracting U(Ⅵ) from nitric acid. Experiments were performed by selecting diluents, changing the concentrations of the nitric acid and extractants and temperature. The results show that all these compounds can efficiently extract UO₂²⁺ from nitric acid, which is much better for alkyl substituents than for aryl group. The extraction reactions are exothermal.