Metal-Containing Ionic Liquids: Highly Effective Catalysts for Degradation of Poly(Ethylene Terephthalate)

Poly(ethylene terephthalate) (PET) waste from local market was depolymerized by ethylene glycol (EG) in the presence of metal-containing ionic liquids, and the qualitative analysis showed that the bis(hydroxyethyl) terephthalate (BHET) was the main product in this process. Compared with other metal-...

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Bibliographic Details
Published in:Advances in materials science and engineering 2014-01, Vol.2014 (2014), p.1-6
Main Authors: Bai, Xue Feng, Zhang, Mi Lin, Yang, Hua Guang, Yue, Qun Feng
Format: Article
Language:English
Subjects:
Chemical engineering
Ions
Liquids
Solvents
Studies
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Summary:Poly(ethylene terephthalate) (PET) waste from local market was depolymerized by ethylene glycol (EG) in the presence of metal-containing ionic liquids, and the qualitative analysis showed that the bis(hydroxyethyl) terephthalate (BHET) was the main product in this process. Compared with other metal-containing ionic liquids, [Bmim]ZnCl3 was considered the best catalyst in the glycolysis of PET. When the reaction temperature was 180°C, the conversion of PET reached 97.9% and the BHET was yielded to 83.3% within 5 h. At the same time, [Bmim]ZnCl3 could be reused for six times without obvious decrease in the yield of BHET. Additional, the effects of waste PET’s source and size were investigated.
ISSN:1687-8434
1687-8442
DOI:10.1155/2014/454756