Glycolysis of Poly(ethylene terephthalate) Catalyzed by the Lewis Base Ionic Liquid (Bmim)(OAc)

被引：152

作者：

Al-Sabagh, Ahmed M. ^{[1
]}

Yehia, Fatma Z. ^{[2
]}

Eissa, Abdel-Moneim M. F. ^{[3
]}

Moustafa, Moustafa E. ^{[3
]}

Eshaq, Ghada ^{[2
]}

Rabie, Abdel-Rahman M. ^{[2
]}

ElMetwally, Ahmed E. ^{[2
]}

机构：

[1] Egyptian Petr Res Inst, Dept Petr Applicat, Cairo 11727, Egypt

[2] Egyptian Petr Res Inst, Dept Petrochem, Cairo 11727, Egypt

[3] Benha Univ, Fac Sci, Dept Chem, Cairo, Egypt

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 48期

关键词：

SOFT-DRINK BOTTLES; POLYETHYLENE TEREPHTHALATE; POLY(LACTIC ACID); DEPOLYMERIZATION; HYDROLYSIS; WASTE; POLYCARBONATE; ACETATE; ESTERIFICATION; METHANOLYSIS;

D O I：

10.1021/ie503677w

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The glycolysis of poly(ethylene terephthalate) (PET) was studied using 1-butyl-3-methylimidazolium acetate ([Bmim][OAc]) as a catalyst. The effects of temperature, time, ethylene glycol dosage, PET amount, and [Bmim][OAc] dosage on the glycolysis reaction were examined. The results revealed that [Bmim][OAc] has a PET conversion of 100% and a bis(2-hydroxyethyl)terephthalate (BHET) yield of 58.2% under the optimum conditions of 1.0 g of [Bmim][OAc] with 20 g of ethylene glycol in the presence of 3.0 g of PET at 190°C after 3 h of glycolysis. The ionic liquid could be reused up to six times with no apparent decrease in the conversion of PET or yield of BHET. The pH plays a major role in explaining the proposed mechanism of glycolysis using the Lewis base ionic liquid [Bmim][OAc]. The kinetics of the reaction was first-order with an activation energy of 58.53 kJ/mol. © 2014 American Chemical Society.

引用

页码：18443 / 18451

页数：9

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