离子液体萃取金属Zn^(2+)、Ni^(2+)离子工艺  

The process of ionic liquid extraction to Zn^(2+) and Ni^(2+) ions

作　　者：王犇[1] 章效强[2] 涂盛辉[1] 杨昆忠 张超[1] WANG Ben ZHANG Xiaoqiang TU Shenghui YANG Kunzhong ZHANG Chao(School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China Jiangxi Institute of Analysis and Test, Nanchang 330029, China)

机构地区：[1]南昌大学资源环境与化工学院,江西南昌330031 [2]江西省分析测试研究所,江西南昌330029

出　　处：《南昌大学学报（工科版）》2017年第1期8-12,共5页Journal of Nanchang University(Engineering & Technology)

基　　金：国家自然基金资助项目(51162022)

摘　　要：以溴代正丁烷、溴代正己烷、溴代正辛烷、N-甲基咪唑、六氟磷酸钾为原料,用微波法合成1-丁基-3-甲基咪唑六氟磷酸盐、1-己基-3-甲基咪唑六氟磷酸盐、1-辛基-3-甲基咪唑六氟磷酸盐,并通过FTIR、~1HNMR、HPLC手段对1-丁基-3-甲基咪唑六氟磷酸盐结构和含量进行表征。分别探究1-丁基-3-甲基咪唑六氟磷酸盐、1-丁基-3-甲基咪唑六氟磷酸盐-双硫腙、双硫腙-氯仿三种体系和阳离子上碳链的长度对溶液中的Zn^(2+)、Ni^(2+)萃取效果的影响。在此基础上,探究温度、pH、离子初始质量浓度对金属萃取效果的影响。结果表明:在p H=6、t=35℃条件下,Zn^(2+)、Ni^(2+)的萃取率分别达到95%、86.3%。The N - Butyl bromide, N - hexyl bromide, N - octyl bromide, N - methylimiazole, and potassium hexafluorophosphate were used to synthesize [ BMIM ] [ PF6 ], [ HMIM ] [ PF6 ], and [ OMIM ] [ PF6 ] by microwave method. The structure and content of [ BMIM ] [ PF6 ] was characterized by FT - IR, 1 HNMR, and HPLC methods.The influence of that extract system which were [ BMIM ] [ PF6 ], [ BMIM ] [ PF6 ] - dithizone, dithizone-chloroform and the length of carbon chain to extracting Zn2 ＋ , and Ni2＋ were studied. The results showed the [ BMIM ] [ PF6 ] -dithizone was the best choice, and the influence of temperature, pH, and initial metal ion concentration to extracting rate were researched. Results indicated that the Zn2＋ and Ni2＋ extraction rate were reached to 95% and 86.3% ,respectively, at the condition of pH = 6 and t = 35 ℃.

关 键 词：离子液体 萃取金属 1-丁基-3-甲基咪唑六氟磷酸盐 双硫腙 

分 类 号：O626.23[理学—有机化学]