Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 10, Pages 13114-13121Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b02650
Keywords
Methanolysis; polycarbonate; DBU-based ionic liquids; homogeneous catalysis; reusability
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Funding
- National Natural Science Foundation of China [51673106]
- Science and Technology Research Project of Shandong Province [2016GSF116005]
- Taishan Scholars Projects of Shandong [ts201511033]
- 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]
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The development of efficient and green protocol for recycling of waste plastics is of great significance in terms of sustainable society and green chemistry concepts. Several ionic liquids (ILs) with different acidity-basicity and structures were one-step synthesized and characterized. They were applied to alcoholysis of polycarbonate (PC) without metal and solvent. The IL structures and reaction conditions were optimized. Moreover, the alcohol scopes and catalyst reusability were evaluated. The results showed that 100% PC conversion and 99% bisphenol A (BPA) yield were obtained by using [HDBU] [LAc] catalyst, and the [HDBU][LAc] could keep high-activity after using for six times under the optimized conditions. Finally, the possible reaction mechanism was proposed via the FT-IR and NMR analysis technique.
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