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Fast and effective glycolysis of poly(ethylene terephthalate) catalyzed by polyoxometalate
Geng, Yanrong1,2; Dong, Tao1; Fang, Pengtao1; Zhou, Qing1; Lu, Xingmei1; Zhang, Suojiang1
2015-07-01
Source PublicationPOLYMER DEGRADATION AND STABILITY
ISSN0141-3910
Volume117Issue:JULPages:30-36
Abstract

Transition-metal-substituted polyoxometalates (POMs) K6SiW11MO39(H2O) (M = Zn2+, Mn2+, Co2+, Cu2+, Ni2+) show excellent catalytic activities in the glycolysis of poly(ethylene terephthalate) (PET) under mild conditions. The effects of temperature, catalyst amount and reaction time on PET degradation are investigated. The PET could be fast and completely degraded at low catalyst/PET molar ratio (0.13%) and high PET/EG weight ratio (1:4). The yield of bis(hydroxyethyl) terephthalate (BHET) exceeds 84% with the SiW11Zn as the catalyst under atmospheric pressure at 185 degrees C for 30 min. The catalyst and ethylene glycol (EG) can be easily separated from the products by filtration and can be reused together. After recycling eight times, the conversion of PET and the yield of BHET can still reach 100% and 83%, respectively. The possible nucleophilic substitution mechanism for PET glycolysis using the K6SiW11ZnO39(H2O) as the catalyst is proposed. The POM catalysts are hopeful to provide the possibility for other polymer degradation. (c) 2015 Elsevier Ltd. All rights reserved.

KeywordPoly(Ethylene Terephthalate) Glycolysis Polyoxometalate Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.polymdegradstab.2015.03.019
Indexed BySCI
Language英语
WOS KeywordIONIC LIQUIDS ; WASTE ; DEPOLYMERIZATION ; HYDROLYSIS ; PET ; POLYMERIZATION ; TEREPHTHALATE ; EFFICIENT ; ACID
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000356117400005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19285
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Geng, Yanrong,Dong, Tao,Fang, Pengtao,et al. Fast and effective glycolysis of poly(ethylene terephthalate) catalyzed by polyoxometalate[J]. POLYMER DEGRADATION AND STABILITY,2015,117(JUL):30-36.
APA Geng, Yanrong,Dong, Tao,Fang, Pengtao,Zhou, Qing,Lu, Xingmei,&Zhang, Suojiang.(2015).Fast and effective glycolysis of poly(ethylene terephthalate) catalyzed by polyoxometalate.POLYMER DEGRADATION AND STABILITY,117(JUL),30-36.
MLA Geng, Yanrong,et al."Fast and effective glycolysis of poly(ethylene terephthalate) catalyzed by polyoxometalate".POLYMER DEGRADATION AND STABILITY 117.JUL(2015):30-36.
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