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离子液体催化废聚碳酸酯的乙醇醇解反应

作者:时间:2014-06-11点击数:

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.

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