复合催化合成DOTP工艺研究  

Synthesis of DOTP by complex catalyst

作　　者：李科[1,2,3,4] 蒋剑春[1,2,3,4,5] 聂小安[1,2,3,4,5] 伍连绪 

机构地区：[1]中国林业科学研究院 林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局 林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]中国林业科学研究院 林业新技术研究所,北京100091 [6]南京林业大学化学工程学院,江苏南京210037

出　　处：《化学工程师》2014年第9期1-3,6,共4页Chemical Engineer

基　　金：中国林科院院所基金项目(CAFYBB2011010);林业公益性行业专项(201004001)

摘　　要：研究一种辅助催化剂与钛酸四丁酯的复合催化酯化PTA合成DOTP的工艺。不仅得出了最佳复合催化工艺:醇酸物质的量之比为2.8∶1,主催化剂用量0.3%,辅助催化剂用量0.2%,反应仅耗时110min且终止温度只有224℃;还得出了复合催化的机理是辅助催化剂通过提高单辛酯向DOTP的转化,促进PTA向单辛酯的转化,进而加快整个反应进程。A kind of complex catalyst with auxiliary catalyst and tetrabutyl titanate Medley was researched,which are used for Compositing DOTP from PTA.The best compound catalytic technology：The ratio of the amount of substance molar of alcohol and acid was 2.8：1,the main catalyst was 0.3%,auxiliary catalyst was 0.2%,reaction only takes 110 min and the end temperature was 224℃; It was also concluded that the compound catalytic mechanism is Auxiliary catalyst by means of enhanceing the reaction rate of compositing DOTP from mono-（2-ethylhexyl）terephthale,the reaction rate of compositing mono-（2-ethylhexyl）terephthale from PTA was enhanced,and then the process of the whole reaction was accelerate.

关 键 词：对苯二甲酸二异辛酯 增塑剂 催化剂 工艺 

分 类 号：TQ414[化学工程]