期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 11, 页码 15127-15134出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03591
关键词
Alcoholysis; Polyester; Ionic liquids; Lewis base catalysis; Mechanism
资金
- National Natural Science Foundation of China [51673106, 21805154]
- Science and Technology Research Project of Shandong Province [2016GSF116005]
- Natural Science Foundation of Shandong Province [ZR2018BB009]
- Project of Shandong Province Higher Educational Science and Technology Program [J18KA065]
- Scientific Research Foundation of Qingdao University of Science and Technology [0100229019]
Polyester wastes have caused a series of environmental issues, and it has became imperative to promote recycling of polyester wastes. Herein, a novel protocol for polyester depolymerization to recover the corresponding monomers or chemicals catalyzed by imidazole-anion-derived ionic liquids (ILs) was developed. The catalytic behavior, catalyst recyclability, and versatility for alcoholysis of polyester were studied in detail under mild and green conditions. A comparison of the activity with the reported catalysts was provided, which indicated the unparalleled activity of [HDBU] [Im] for the polyester alcoholysis. An in-depth study of the feasible alcoholysis mechanism was given assisting with in situ analysis technique. The developed protocol realized the highly efficient chemical recycling of polyesters via alcoholysis method with unparalleled activity, avoided the pollution caused by toxic transition metal ions and organic solvents, indicating a green and promising alternative for practical recycling of polyester wastes.
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