Knowledge Management System Of Institute of process engineering,CAS
| Degradation of poly(ethylene terephthalate) catalyzed by metal-free choline-based ionic liquids | |
| Liu, Yachan1,2; Yao, Xiaoqian1,3; Yao, Haoyu1,3; Zhou, Qing1,3; Xin, Jiayu1,2,3; Lu, Xingmei1,2,3; Zhang, Suojiang1,2 | |
| 2020-05-21 | |
| Source Publication | GREEN CHEMISTRY
 |
| ISSN | 1463-9262 |
| Volume | 22Issue:10Pages:3122-3131 |
| Abstract | Glycolysis of poly(ethylene terephthalate) (PET) is a prospective way for degradation of PET to its monomer bis(hydroxyethyl) terephthalate (BHET) which can be polymerized again to form new qualified PET materials, and hence provides possibilities for a permanent loop recycling. However, most of the reported glycolysis catalysts are metal-based, leading to high cost and negative environmental impact. In this study, we developed a series of choline-based ionic liquids (ILs) without metals and applied them in the glycolysis of PET as catalysts. Choline acetate ([Ch][OAc]), which is cheaper, more biologically compatible and environmentally friendly in comparison with conventional imidazolium metal-based ILs, can achieve a comparable or even better performance than them. Under optimum conditions (PET (5.0 g), ethylene glycol (EG) (20.0 g), [Ch][OAc] (5 wt%), 180 degrees C, 4 h, atmospheric pressure), the yield of BHET reached up to 85.2%. Additionally, the reaction kinetics was studied and proved to be the shrinking-core model. The apparent activation energy is 131.31 kJ mol(-1), and the pre-exponential factor is 1.21 x 10(13) min(-1). Finally, based on the experimental results and density functional theory (DFT) calculations, a possible mechanism was proposed. The promotion of the glycolysis reaction is attributed to the activation of EG by the formation of hydrogen bonds between EG and the IL. |
| DOI | 10.1039/d0gc00327a |
| Language | 英语 |
| WOS Keyword | POLYETHYLENE TEREPHTHALATE ; GLYCOLYSIS ; DEPOLYMERIZATION ; PET ; KINETICS ; WASTE ; HYDROLYSIS ; SOLVENT ; ACID |
| Funding Project | National Natural Scientific Fund of China[21878292] ; National Natural Scientific Fund of China[21776289] ; National Natural Scientific Fund of China[21921005] ; K. C. Wong Education Foundation[GJTD-2018-04] ; Chinese Academy of Sciences President's International Fellowship Initiative[122111WGZJTPYJY20180050] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A06] ; National Key Research and Development Program of China[2019YFC1908204] ; China Postdoctoral Science Foundation[2019M660797] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics |
| WOS Subject | Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology |
| Funding Organization | National Natural Scientific Fund of China ; K. C. Wong Education Foundation ; Chinese Academy of Sciences President's International Fellowship Initiative ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Key Research and Development Program of China ; China Postdoctoral Science Foundation |
| WOS ID | WOS:000537870500010 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40963 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Lu, Xingmei; Zhang, Suojiang |
| Affiliation | 1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Inst Proc Engn,CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Yachan,Yao, Xiaoqian,Yao, Haoyu,et al. Degradation of poly(ethylene terephthalate) catalyzed by metal-free choline-based ionic liquids[J]. GREEN CHEMISTRY,2020,22(10):3122-3131. |
| APA | Liu, Yachan.,Yao, Xiaoqian.,Yao, Haoyu.,Zhou, Qing.,Xin, Jiayu.,...&Zhang, Suojiang.(2020).Degradation of poly(ethylene terephthalate) catalyzed by metal-free choline-based ionic liquids.GREEN CHEMISTRY,22(10),3122-3131. |
| MLA | Liu, Yachan,et al."Degradation of poly(ethylene terephthalate) catalyzed by metal-free choline-based ionic liquids".GREEN CHEMISTRY 22.10(2020):3122-3131. |
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