First-Row Transition Metal-Containing Ionic Liquids as Highly Active Catalysts for the Glycolysis of Poly(ethylene terephthalate) (PET) | |
Wang, Qian1,2; Geng, Yanrong1; Lu, Xingmei1; Zhang, Suojiang1 | |
刊名 | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
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2015-02-01 | |
卷号 | 3期号:2页码:340-348 |
关键词 | Transition metal-containing ionic liquids Catalyze Glycolysis Poly(ethylene terephthalate) Mechanism |
ISSN号 | 2168-0485 |
其他题名 | ACS Sustain. Chem. Eng. |
中文摘要 | First-row transition metal-containing ionic liquids (ILs) were synthesized and used to catalyze the degradation of poly(ethylene terephthalate) (PET) in ethylene glycol (EG). One important feature of these IL catalysts is that they have good thermal stability, and most of them, especially [bmim](2)[CoCl4] (bmim = 1-butyl-3-methyl-imidazolium) and [bmim](2)[ZnCl4], exhibit higher catalytic activity, compared with traditional catalysts, conventional IL catalysts, and some functional ILs. For example, utilizing [bmim](2)[CoCl4] as catalyst, the conversion of PET, selectivity of bis(hydroxyethyl) terephthalate (BHET), and mass fraction of BHET in products reach up to 100%, 81.1%, and 95.7%, respectively, under atmospheric pressure at 175 degrees C for only 1.5 h. Another important feature is that BHET can be easily separated from these IL catalysts and has high purity. Moreover, recycling results show that [bmim](2)[CoCl4] worked efficiently after being used six times. These all show that [bmim](2)[CoCl4] is an excellent IL catalyst for the glycolysis of PET. Finally, based on in situ IR spectra and experimental results, the possible mechanism of degradation with synthesized IL is proposed. |
英文摘要 | First-row transition metal-containing ionic liquids (ILs) were synthesized and used to catalyze the degradation of poly(ethylene terephthalate) (PET) in ethylene glycol (EG). One important feature of these IL catalysts is that they have good thermal stability, and most of them, especially [bmim](2)[CoCl4] (bmim = 1-butyl-3-methyl-imidazolium) and [bmim](2)[ZnCl4], exhibit higher catalytic activity, compared with traditional catalysts, conventional IL catalysts, and some functional ILs. For example, utilizing [bmim](2)[CoCl4] as catalyst, the conversion of PET, selectivity of bis(hydroxyethyl) terephthalate (BHET), and mass fraction of BHET in products reach up to 100%, 81.1%, and 95.7%, respectively, under atmospheric pressure at 175 degrees C for only 1.5 h. Another important feature is that BHET can be easily separated from these IL catalysts and has high purity. Moreover, recycling results show that [bmim](2)[CoCl4] worked efficiently after being used six times. These all show that [bmim](2)[CoCl4] is an excellent IL catalyst for the glycolysis of PET. Finally, based on in situ IR spectra and experimental results, the possible mechanism of degradation with synthesized IL is proposed. |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
类目[WOS] | Chemistry, Multidisciplinary ; Engineering, Chemical |
研究领域[WOS] | Chemistry ; Engineering |
关键词[WOS] | SOFT-DRINK BOTTLES ; DEPOLYMERIZATION ; SOLVENTS ; FUTURE ; WASTE |
收录类别 | SCI |
原文出处 | |
语种 | 英语 |
WOS记录号 | WOS:000348894000018 |
公开日期 | 2015-04-01 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/11846] ![]() |
专题 | 过程工程研究所_研究所(批量导入) |
作者单位 | 1.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, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Qian,Geng, Yanrong,Lu, Xingmei,et al. First-Row Transition Metal-Containing Ionic Liquids as Highly Active Catalysts for the Glycolysis of Poly(ethylene terephthalate) (PET)[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2015,3(2):340-348. |
APA | Wang, Qian,Geng, Yanrong,Lu, Xingmei,&Zhang, Suojiang.(2015).First-Row Transition Metal-Containing Ionic Liquids as Highly Active Catalysts for the Glycolysis of Poly(ethylene terephthalate) (PET).ACS SUSTAINABLE CHEMISTRY & ENGINEERING,3(2),340-348. |
MLA | Wang, Qian,et al."First-Row Transition Metal-Containing Ionic Liquids as Highly Active Catalysts for the Glycolysis of Poly(ethylene terephthalate) (PET)".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 3.2(2015):340-348. |
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