期刊
CHEMICAL ENGINEERING JOURNAL
卷 398, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.125655
关键词
Polyethylene terephthalate (PET); Depolymerization; Terephthalic acid; ZSM-5; Microwave assisted reaction
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT (MSIT) [NRF-2020R1A2C1010725]
- Korea Research Institute of Chemical Technology (KRICT) core project [SS2042-10]
Reprocessing of waste plastic has been extensively studied. Herein, a facile and efficient method for solving the plastic recycling crisis was developed using micro-wave assisted hydrolysis of poly(ethylene terephthalate) (PET) into terephthalic acid (TPA). Previously developed acid or base catalysts are soluble in reaction media and difficult to separate after the reaction. ZSM-5 based zeolites, which are simply recoverable and facilely regenerable catalysts with BrOnsted and Lewis acidic sites, were used herein as an acidic catalyst for the PET hydrolysis reaction. Controlling the BrOnsted and Lewis acidic site concentration in the ZSM-5 zeolite by changing the Si/Al ratio of the zeolite framework and counter ion species was applied. The reaction kinetics and activation energy of the PET hydrolysis reaction in the presence of the developed catalyst were studied and compared with catalyst-free conditions. Based on this investigation, the correlation between BrOnsted and Lewis acidic sites in ZSM-5-based catalysts and PET depolymerization yield was identified.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据