离子液体催化合成十六烷基苯的研究  

Synthesis of Hexadecylbenzene Catalytic with Ionic Liquid

作　　者：齐晶[1] 王元勋[1] 郭丽娜[1] 侯启军[1] 乔卫红[1] 李宗石[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《精细与专用化学品》2009年第9期19-22,共4页Fine and Specialty Chemicals

基　　金：国家重点基础研究发展973计划(2005CB221300)

摘　　要：烷基苯磺酸盐是一种具有多种工业用途的重要阴离子表面活性剂，尤其在三次采油驱油剂中占据着重要的地位，可与许多地区原油在较宽范围内产生超低界面张力。长链烷基苯是合成烷基苯磺酸盐表面活性剂的重要中间体，以苯与烯烃或者卤代烃为原料进行的Friedel—Crafts烷基化反应生产。传统的生产工艺中一般是使用AlCl3，H2SO4，HF以及其他路易斯酸作为催化剂，但是这些工艺存在着环境污染严重，产品纯化困难以及催化剂不能回收等一系列问题。因此，寻找开发一种环境友好的催化剂势在必行。Hexadecylbenzene was prepared by the alkylation of benzene with 1-hexadecene catalytic with in-situ synthesized ionic liquid.The influences of process parameters,such as different kinds of catalysts,acidity of catalyst,reaction temperature,reaction time,molar ratio of benzene to olefins and influence of recycling use of catalyst on conversion of olefin,selectivity of hexadecylbenzene and distribution of isomers were investigated.The selectivity of 5～8 isomer was also conducted.It showed that in-situ ionic liquids had high catalytic activity.Under the optimum reaction conditions,the conversion of olefin and selectivity of alkylbenzene both could reach up to 100%,the 5～8 isomer selectivity was 50.63%.The acidity of ionic liquid had significant influence on distribution of alkylbenzene isomers.

关 键 词：烷基苯磺酸盐 催化合成 离子液体 阴离子表面活性剂 磺酸盐表面活性剂 超低界面张力 生产工艺 长链烷基苯 

分 类 号：TQ423.11[化学工程]