新型萃取剂2,4-二(N,N-二丁基氨基)十二烷基苯的合成及应用研究(英文)  

Research on Synthesis and Application of New Extractant 2,4 Bis (N,N dibutyl amino) dodecylbenzene

作　　者：阎峰[1,2] 赵鸣玉[1,2] 程侣柏 

机构地区：[1]沈阳化工学院 [2]大连理工大学

出　　处：《沈阳化工学院学报》1999年第1期62-66,共5页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：以十二烷基苯为原料，经硝化、加氢和Ｎ烷化制得一种以双叔胺２，４二（Ｎ，Ｎ二丁基氨基）十二烷基苯为主要成分的新型萃取剂．其中硝化采用混酸硝化法，分两步进行，收率为９２６％；加氢采用５％钯炭催化剂，在５５℃、１２～１５ＭＰａ下进行，收率为９２０％；Ｎ烷化采用季铵盐相转移催化剂催化，在氢氧化钠水溶液中于回流温度下进行，产物中目的产物的收率为４８６％．在以异辛醇为稀释剂、温度为２５℃及相比为１的萃取条件下，该萃取剂对硫酸的萃取率比三辛胺提高了４９５％．A new kind of extractant in which the main component is di tertiary amine,2,4 bis(N,N dibutyl amino) dodecylbenzene, was prepared from dodecylbenzene through nitration, hydrogenation and N alkylation. The nitration was conducted in twice with mixed acid, the yield was 92.6 % ; the hydrogenation was conducted under 55 ℃, 1.2～0.5 MPa, 5 % Pd C ( w ) as catalyst, the yield was 92.0 %. By using quaternary ammonium salt phase transfer catalyst, the N alkylation was conducted in aqueous solution of sodium hydroxide, under refluxing temperature, the yield of main product was no less than 48.6 %. Under extracting conditions of using 2 ethyl hexanol as diluent, phase ratio 1, and temperature 25 ℃, its percentage extraction on sulfuric acid was 49.5 % higher than that of trioctylamine.

关 键 词：双叔胺 萃取剂 合成 十二烷基苯 

分 类 号：O625.11[理学—有机化学] O652.4[理学—化学]