Methanolysis of polycarbonate catalysed by ionic liquid [Bmim][Ac]

被引：104

作者：

Liu, Fusheng ^{[1
]}

Li, Lei ^{[1
]}

Yu, Shitao ^{[1
]}

Lv, Zhiguo ^{[1
]}

Ge, Xiaoping ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 189卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Ionic liquid; Methanolysis; Polycarbonate; Recycling; BISPHENOL-A; DECOMPOSITION; DEGRADATION; KINETICS;

D O I：

10.1016/j.jhazmat.2011.02.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The methanolysis of polycarbonate (PC) was studied using ionic liquid [Bmim][Ac] as a catalyst. The effects of temperature, time, methanol dosage and [Bmim][Ac] dosage on the methanolysis reaction were examined. It was shown that the conversion of PC was nearly 100%, and the yield of bisphenol A (BPA) was over 95% under the following conditions: m([Bmim][Ac]):m(PC) = 0.75:1; m(methanol):m(PC) = 0.75:1; a reaction temperature of 90 degrees C and a total time of 2.5h. The ionic liquid could be reused up to 6 times with no apparent decrease in the conversion of PC and yield of BPA. The kinetics of the reaction was also investigated. The results indicated that the methanolysis of PC in [Bmim][Ac] was a first-order kinetic reaction with an activation energy of 167 kJ/mol. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：249 / 254

页数：6

共 13 条

[1]

[陈磊 Chen Lei], 2004, [化工学报, Journal of Chemical Industry and Engineering (China)], V55, P1787

[2] Effect of metal chlorides on thermal degradation of (waste) polycarbonate [J].

Chiu, SJ ;

Chen, SH ;

Tsai, CT .

WASTE MANAGEMENT, 2006, 26 (03) :252-259

[3] Pyrolytic hydrolysis of polycarbonate in the presence of earth-alkali oxides and hydroxides [J].

Grause, Guido ;

Sugawara, Katsuya ;

Mizoguchi, Tadaaki ;

Yoshioka, Toshiaki .

POLYMER DEGRADATION AND STABILITY, 2009, 94 (07) :1119-1124

[4] Alkali-catalyzed methanolysis of polycarbonate. A study on recycling of bisphenol A and dimethyl carbonate [J].

Hu, LC ;

Oku, A ;

Yamada, E .

POLYMER, 1998, 39 (16) :3841-3845

[5] Monomer recovery of waste plastics by liquid phase decomposition and polymer synthesis [J].

Ikeda, Akio ;

Katoh, Kazuya ;

Tagaya, Hideyuki .

JOURNAL OF MATERIALS SCIENCE, 2008, 43 (07) :2437-2441

[6] Study on depolymerization of polycarbonate in supercritical ethanol [J].

Jie, Huang ;

Ke, Huang ;

Qing, Zhou ;

Lei, Chen ;

Wu Yongqiang ;

Zhu Zibin .

POLYMER DEGRADATION AND STABILITY, 2006, 91 (10) :2307-2314

[7] Kinetics of Polycarbonate Glycolysis in Ethylene Glycol [J].

Kim, Dongpil ;

Kim, Bo-kyung ;

Cho, Youngmin ;

Han, Myungwan ;

Kim, Beom-Sik .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2009, 48 (02) :685-691

[8] Environmentally benign methanolysis of polycarbonate to recover bisphenol A and dimethyl carbonate in ionic liquids [J].

Liu, Fusheng ;

Li, Zhuo ;

Yu, Shitao ;

Cui, Xiao ;

Ge, Xiaoping .

JOURNAL OF HAZARDOUS MATERIALS, 2010, 174 (1-3) :872-875

[9] Degradation Kinetics of Polycarbonate in Supercritical Methanol [J].

Oh, Sea Cheon ;

Shin, Hee-Yong ;

Bae, Seong-Yeol .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2009, 42 (09) :700-704

[10] Chemical conversion of poly(carbonate) to bis(hydroxyethyl) ether of bisphenol A. An approach to the chemical recycling of plastic wastes as monomers [J].

Oku, A ;

Tanaka, S ;

Hata, S .

POLYMER, 2000, 41 (18) :6749-6753

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