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Deep eutectic solvents as highly active catalysts for the fast and mild glycolysis of poly(ethylene terephthalate)(PET)
Wang, Qian1,2; Yao, Xiaoqian1; Geng, Yanrong1; Zhou, Qing1; Lu, Xingmei1; Zhang, Suojiang1
2015
Source PublicationGREEN CHEMISTRY
ISSN1463-9262
Volume17Issue:4Pages:2473-2479
AbstractDeep eutectic solvents (DESs) have attracted broad attention due to their low cost, easy preparation, low toxicity, good biological compatibility and similar characteristics to those of ionic liquids (ILs). In this study, we found that not only the glycolysis time is sharply shortened under mild reaction conditions, but also the high selectivity of monomer bis(hydroxyalkyl) terephthalate (BHET) is obtained when DESs were used as catalysts. Then, the influences of technological parameters on PET degradation were investigated and the optimization conditions were obtained. Under the optimization conditions of ethylene glycol (EG) (20 g), catalyst (n(urea)/n(ZnCl2) 4/1, 0.25 g), PET (5 g), and atmospheric pressure at 170 degrees C for 30 min, the conversion of PET and selectivity of BHET were 100% and 83%, respectively. This time is equal to that taken by a supercritical method under 15.3 MPa at 450 degrees C. In addition, the degradation mechanism of PET wastes catalyzed by DESs is proposed through the experiments and DFT calculations. The high catalytic activity is attributed to the synergetic catalysis of H-bonds and coordination bonds formed between the DES catalyst and EG.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c4gc02401j
Indexed BySCI
Language英语
WOS KeywordIONIC LIQUIDS ; SUPERCRITICAL METHANOL ; POLYETHYLENE TEREPHTHALATE ; POLY(ETHYLENE-TEREPHTHALATE) ; PET ; DEPOLYMERIZATION ; KINETICS ; DEGRADATION ; HYDROLYSIS
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000352724200053
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/16745
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.Shandong Normal Univ, College Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Wang, Qian,Yao, Xiaoqian,Geng, Yanrong,et al. Deep eutectic solvents as highly active catalysts for the fast and mild glycolysis of poly(ethylene terephthalate)(PET)[J]. GREEN CHEMISTRY,2015,17(4):2473-2479.
APA Wang, Qian,Yao, Xiaoqian,Geng, Yanrong,Zhou, Qing,Lu, Xingmei,&Zhang, Suojiang.(2015).Deep eutectic solvents as highly active catalysts for the fast and mild glycolysis of poly(ethylene terephthalate)(PET).GREEN CHEMISTRY,17(4),2473-2479.
MLA Wang, Qian,et al."Deep eutectic solvents as highly active catalysts for the fast and mild glycolysis of poly(ethylene terephthalate)(PET)".GREEN CHEMISTRY 17.4(2015):2473-2479.
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