全文下载:2013060571
柴方军, 刘福胜*, 宋修艳
(青岛科技大学 化工学院,山东 青岛 266042)
摘要: 以合成的离子液体氯化1-丁基-3-甲基咪唑(\[Bmim\]\[Cl\])为催化剂,对废聚碳酸酯(PC)乙醇醇解回收双酚A(BPA)和碳酸二乙酯(DEC)反应进行了研究。考察了反应温度、乙醇用量、离子液体用量和反应时间等因素对反应结果的影响。结果表明:在反应温度为130 ℃,反应时间为2 h,n(C2H5OH)∶n(PC)= 6∶1,m(\[Bmim\]\[Cl\])∶m(PC) =0.5∶1的较佳条件下,PC降解率为100%, BPA收率>95%,DEC收率>91%。采用IR 技术对所得产物进行了表征。
关键词: 离子液体; 聚碳酸酯; 乙醇醇解; 双酚A
中图分类号:TQ 323文献标志码: A
Ethanolysis of Waste Polycarbonate Catalyzed by Ionic Liquid
CHAI Fang-jun, LIU Fu-sheng, SONG Xiu-yan
(CollegeofChemical Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)
Abstract: Ethanolysis of waste polycarbonate (PC) to recover bisphenol A (BPA) and diethyl carbonate (DEC) was studied using ionic liquid 1-butyl-3-methylimidazolium chloride (\[Bmim\]\[Cl\]) as catalyst. The effects of reaction factors such as temperature, ethanol dosage, \[Bmim\]\[Cl\] dosage and time on reaction results were examined. The results showed that the conversion of PC was 100%, the yields of BPA and DEC were >95% and >91% respectively under the optimum conditions of temperature 130 ℃, time 2 h, n(ethanol)∶ n (polycarbonate)=6∶1, m(\[Bmim\]\[Cl\])∶m(PC) =0.5∶1. The products were characterized by IR.
Key words: ionic liquid; polycarbonate; ethanolysis; bisphenol A
收稿日期:2012-10-24
基金项目: 山东省自然科学基金项目(ZR2009BM023); 山东省科技发展计划项目(2011GSF11604).
作者简介: 柴方军(1988—),男,硕士研究生. *通信联系人.