压力对酯化合成DOTP的影响  

Pressure Effect on the Esterification of DOTP

作　　者：李科[1] 蒋剑春 聂小安[3] 许玉 

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏南京210042 [2]生物质化学利用国家工程实验室,江苏南京210042 [3]国家林业局林产化学工程重点开放性实验室,江苏南京210042 [4]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《广东化工》2013年第14期39-40,46,共3页Guangdong Chemical Industry

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：研究了压力在对苯二甲酸与异辛醇酯化合成对苯二甲酸二异辛酯过程中起到的影响。对比常压、加压、负压的实验数据,结果表明,反应前期在保证升温的同时保持尽量低的压力有利于反应向正方向进行的,此时温度的影响比勒夏特勒效应大;而在反应后期适当负压有利于增加辛醇回流量,促进出水,并可有效降低反应终止温度。Studied the effection of Pressure about esterification of compounding DOTP from terephthalic acid and isooctyl alcohol.Compared to the experimental data of ordinary pressure reaction,pressurized reaction and negative pressure reaction,the results show that at the early reaction keep low pressure as far as possible is advantageous to the esterification to the positive direction when on ensures ensure heating up,this time the influence of temperature is larger than le chatelier＇s principle;At later stage,appropriate negative pressure is beneficial to increase octanol back flow,promote yielding water,and can greatly lower the temperature to the final temperature simultaneously.

关 键 词：增塑剂 压力 酯化反应 对苯二甲酸二异辛酯 

分 类 号：TQ414[化学工程]