对苯二甲醚绿色合成工艺研究  

Study on the Green Synthesis Process of Terephthalic Ether

作　　者：张永富 孙娜 周林[3] 袁世申 牛鹏程 杨丰科[3] Zhang Yongfu;Sun Na;Zhoulin;Yuan Shishen;Niu Pengcheng;Yang Fengke(Qingdao Common Development Consulting Co.,Ltd,Qingdao 266199,China;Food Department Qingdao Product Quality Supervision and Testing Research Institute,Qingdao 266100,China;College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛和合共生顾问有限公司,山东青岛266199 [2]青岛市产品质量监督检验研究院食品部,山东青岛266100 [3]青岛科技大学化工学院,山东青岛266042

出　　处：《山东化工》2021年第10期58-59,62,共3页Shandong Chemical Industry

摘　　要：采用无毒无害的绿色化工原料碳酸二甲酯(DMC)代替有毒有害的硫酸二甲酯、碘甲烷、氯甲烷等作为对苯二酚(HQ)的甲基化试剂,合成对苯二甲醚,并从催化剂种类、催化剂用量、反应物配比、反应温度、反应时间等方面进行优化研究。结果表明:最佳工艺条件为:n(HQ)∶n(DMC)=1∶4,催化剂为DBN(1,5-二氮杂二环[4.3.0]壬-5-烯),催化剂用量为HQ用量的10%,反应温度160℃,反应时间6 h。在该条件下对苯二甲醚的收率为98.6%,且反应无废水和废盐产生,实现绿色合成目标。Use non-toxic and harmless green chemical raw material dimethyl carbonate(DMC)instead of toxic and harmful dimethyl sulfate,methyl iodide,methyl chloride,etc.as the methylation reagent of hydroquinone(HQ)to synthesize hydroquinone dimethyl,and optimize research from the aspects of catalyst type,catalyst dosage,reactant ratio,reaction temperature,reaction time,etc.The results show that the optimal process conditions are:n(HQ)∶n(DMC)=1∶4,the catalyst is DBN(1,5-Diazabicyclo[4.3.0]non-5-ene),the amount of catalyst is 10% of the amount of HQ,the reaction temperature is 160℃,and the reaction time is 6 hours.Under these conditions,the yield of hydroquinone dimethyl is 98.6%,and there is no waste water and waste salt produced in the reaction,achieving the goal of green synthesis.

关 键 词：对苯二酚 对苯二甲醚 碳酸二甲酯 绿色合成 

分 类 号：TQ243[化学工程—有机化工]