催化作用
材料科学
聚对苯二甲酸乙二醇酯
产量(工程)
插层(化学)
环氧乙烷
化学工程
乙烯
剥脱关节
氧化物
阳离子聚合
无机化学
高分子化学
有机化学
纳米技术
复合材料
石墨烯
化学
聚合物
共聚物
冶金
工程类
作者
Seon Gyu Son,Se Bin Jin,Seo Jin Kim,Hong Jun Park,Junho Shin,Taegong Ryu,Jae‐Min Jeong,Bong Gill Choi
出处
期刊:FlatChem
[Elsevier]
日期:2022-11-01
卷期号:36: 100430-100430
被引量:4
标识
DOI:10.1016/j.flatc.2022.100430
摘要
Glycolysis of poly(ethylene terephthalate) (PET) is one of the main methods by which PET is recycled, which is in the need of an inexpensive and efficient catalyst. We report a glycolysis reaction of PET into bis(hydroxyethyl) terephthalate (BHET) catalyzed by ultrathin exfoliated MnO2 nanosheets (e-MON). The exfoliation of MnO2 was achieved using a shear flow system with a mixing behavior that facilitates the intercalation of potassium ions into the interlayer voids of MnO2, delaminating MnO2 into the mono- and few-layer e-MON. Glycolysis was optimized by varying the reaction temperature, time, and loading of e-MON. The e-MON catalyst provided a BHET yield of 100 % for a reaction lasting 30 min at 200 °C, which was much higher than the 77.6 % yield achieved with bare bulk MnO2. The high yield persisted over five cycles, demonstrating the reusability of the e-MON catalyst.
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