【摘要】 以油酸钠作表面活性剂、正丁醇及[C₁₄mim]Br（1-十四烷基-3-甲基咪唑溴盐）作助表面活性剂、煤油作油相,制备了油酸钠及油酸钠-离子液体微乳液,测定了微乳体系的电导率曲线和增溶水量。以Cu²⁺和Ni²⁺为萃取对象,研究了两种微乳体系对金属离子的萃取性能,考察了离子液体浓度、NaOH浓度、金属离子的初始浓度以及水相与微乳液的体积比等因素对萃取后金属离子分配系数的影响。结果表明,油酸钠-离子液体微乳液比未加离子液体的油酸钠微乳液的电导率大,增溶水量更多。以[C₁₄mim]Br离子液体微乳液为萃取剂,萃取Cu²⁺和Ni²⁺的最佳条件为:V（油酸）∶V（正丁醇）∶V（煤油）=1∶1∶2,水乳比（体积比）为4∶1,[C₁₄mim]Br加入量为0.25 mol/L,NaOH的浓度为2 mol/L,NaCl的浓度为0.15 mol/L。在此萃取条件下,Cu²⁺和Ni²⁺的分配系数分别可达到99.95和99.02。更多还原

【Abstract】 Sodium oleic acid and sodium oleic acid-ionic liquid microemulsion were prepared using sodium oleic acid as surfactant,positive butanol and[C₁₄mim]Br（1-tetealyl-3-methimidazole bromine） as auxiliary surfactant and kerosene as oil phase.The electrical conductivity curve and the increased dissolved water volume of the microemulsion system were determined.The extraction properties of two microemulsion systems for metal ions were studied with Cu²⁺and Ni²⁺.The influence of ionic liquid concentration,NaOH concentration,initial concentration of metal ions and volume ratio of water phase to microemulsion on the distribution coefficient of metal ions after extraction were investigated.The results show that sodium oleic acid-ionic liquid microemulsion had higher conductivity and more soluble water than sodium oleic microemulsion with unionic liquid.The best conditions for extracting Cu²⁺and Ni²⁺with microemulsion of[C₁₄mim]Br ionic liquid as extractant are:oleic acid∶n-butyl alcohol∶kerosene=1∶1∶2 （volume ratio）,water emulsion ratio （volume ratio） is 4∶1,[C₁₄mim]Br addition amount is 0.25 mol/L,concentration of NaOH is 2 mol/L,concentration of NaCl is0.15 mol/L.Under this extraction condition,the allocation coefficients of Cu²⁺and Ni²⁺can reach 99.95 and 99.02,respectively.更多还原