固体超强酸SO^(2-)_4/ZrO_2催化合成十二烷二酸二异辛酯  

Synthesis of diisooctyl dodecanedioate catalyzed by solid superacid catalyst SO^(2-)_4/ZrO_2

作　　者：郑爱华[1] 李为民[1] 任庆功[1] 纪飞[1] 徐庆瑞[1] 陈龙[1] 潘晶晶[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《现代化工》2014年第4期99-102,共4页Modern Chemical Industry

基　　金：江苏省科技支撑计划(BE2012822)

摘　　要：采用沉淀-浸渍法制备了固体超强酸SO2-4/ZrO2催化剂,经FT-IR、XRD对制备的固体超强酸进行表征。以十二烷二酸、异辛醇为原料,采用SO2-4/ZrO2固体酸催化剂合成十二烷二酸二异辛酯。考察了反应温度、反应时间、原料配比、催化剂的质量分数等对合成反应的影响。使用该催化剂合成十二烷二酸二异辛酯的最佳反应条件为:反应温度为130℃,醇酸物质的量比为4∶1,反应时间为5 h,催化剂质量为酸的质量的1.5%,酯化率为98.4%。催化剂不经处理可循环使用,使用5次以后酯化率为95.3%。The solid superacid catalyst SO4^2-/ZrO2 is prepared by precipiation and impregnation,and their structure are characterized by FT-IR and X-RD.Diisooctyl dodecanedioate is synthesized from dodecanedioic acid and iso-octyl alcohol with SO4^2-/ZrO2 solid acid as catalyst.The influence factors of the reaction,such as reaction temperature,reaction time,mole ratio and amount of catalysts are investigated.The optimum conditions for synthesis of diisooctyl dodecanedioate are shown as follows：130℃ of reaction temperature,4 ∶ 1 of n （iso-octyl alcohol） ∶ n （dodecanedioic acid）,5 hours of reaction time and 1.5% （based on the of acid mass） catalyst.Under the optimal condition,the yield of esterification reaches 98.4%.The catalyst can be reused without treatment.The yield of esterification reaches 95.3% when the catalyst is reused for 5 times.

关 键 词：固体酸 沉淀-浸渍法 SO4^2- ZRO2 十二烷二酸二异辛酯 

分 类 号：TQ645[化学工程—精细化工]