一种新的双叔胺化学萃取剂的研究  

Research on a New Ditertiary Amine Chemical Extractant

作　　者：阎峰[1,2] 赵鸣玉[1,2] 程侣柏 

机构地区：[1]沈阳化工学院精细化工系 [2]大连理工大学精细化工国家重点实验室

出　　处：《精细化工》1999年第3期44-46,共3页Fine Chemicals

基　　金：大连理工大学精细化工国家重点实验室开放基金

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二己基）氨基十二烷基苯为主要成分的新萃取剂。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％（ｗ）钯－炭催化剂，在５５℃、１．２～０．５ＭＰａ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、回流温度下进行，最终产物中主产物含量不低于５１．６％。在异辛醇为稀释剂、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５６．９％。A new extractant in which the main component is ditertiary amine2,4bis( N,N dihexyl)amino dodecylbenzene was prepared from dodecylbenzene through nitration,hydrogenation and N alkylation.The nitration was conducted twice with mixed acid,the yield was 92.6%;the hydrogenation was carried out at 55,1.20.5MPa,5% Pd-C as catalyst,the yield was 92.0%;catalyzed by quarternary ammonium salt phase transfer catalyst,the N alkylation was conducted in aqueous solution of sodium hydroxide,at refluxing temperature,the content of the main product was no less than 51.6%.Under extracting conditions of using 2ethyl hexanol as diluent,temperature 25,and phase ratio 1,etc.,its extraction rate for sulfuric acid was 56.9% higher than that of trioctylamine.\=

关 键 词：双叔胺 萃取剂 合成 叔胺 

分 类 号：TQ226.31[化学工程—有机化工]