Hydrolysis of polycarbonate catalyzed by ionic liquid [Bmim][Ac].

Xiuyan Song, Fusheng Liu, Lei Li, Xuequn Yang, Shitao Yu, Xiaoping Ge

College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, 266042 Qingdao, China.

Journal of hazardous materials 2013 Jan 15

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Hydrolysis of polycarbonate (PC) was studied using ionic liquid 1-butyl-3-methylimidazolium acetate ([Bmim][Ac]) as a catalyst. The influences of temperature, time, water dosage and [Bmim][Ac] dosage on the hydrolysis reaction were examined. Under the conditions of temperature 140°C, reaction time 3.0 h, m([Bmim][Ac]):m(PC)=1.5:1 and m(H(2)O):m(PC)=0.35:1, the conversion of PC was nearly 100% and the yield of bisphenol A (BPA) was over 96%. The ionic liquid could be reused up to 6 times without apparent decrease in the conversion of PC and yield of BPA. The kinetics of the reaction was also investigated. The results showed that the hydrolysis of PC in [Bmim][Ac] was a first-order kinetic reaction with an activation energy of 228 kJ/mol. Copyright © 2012 Elsevier B.V. All rights reserved.

Citation

Xiuyan Song, Fusheng Liu, Lei Li, Xuequn Yang, Shitao Yu, Xiaoping Ge. Hydrolysis of polycarbonate catalyzed by ionic liquid [Bmim][Ac]. Journal of hazardous materials. 2013 Jan 15;244-245:204-8