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Highly efficient multifunctional ionic liquid for PET glycolysis under microwave irradiation

Cot, Sergi; Leu, Meike K.; Kalamiotis, Alexis; Dimitrakis, Georgios; Sans Sangorrin, Victor; de Pedro, Imanol; Cano, Israel


Sergi Cot

Meike K. Leu

Alexis Kalamiotis

Victor Sans Sangorrin

Imanol de Pedro

Israel Cano


An oxalate?bridged binuclear iron(III) ionic liquid combined with an imidazolium based cation, (dimim)2[Fe2Cl4(??ox)], was synthesized and characterized by a wide range of techniques. This halometallate ionic liquid was active in catalyzing the depolymerization of polyethylene terephthalate (PET) by glycolysis, under conventional and microwave?assisted heating conditions. Both methodologies were very selective towards the production of bis(2?hydroxyethyl)terephthalate (BHET). The employment of microwave heating proved beneficial in terms of time and energy saving when compared to the use of thermal heating. Indeed, dielectric spectroscopy studies revealed that the binuclear iron?containing ionic liquid exhibits an excellent heating response under an electromagnetic field. The catalyst provided quantitative conversions to BHET in the glycolysis of post?consumer PET bottles in only 3?h through microwave heating, as compared to 80?% conversion after 24?h under conventional heating.


Cot, S., Leu, M. K., Kalamiotis, A., Dimitrakis, G., Sans Sangorrin, V., de Pedro, I., & Cano, I. (2019). Highly efficient multifunctional ionic liquid for PET glycolysis under microwave irradiation. ChemPlusChem, 84(7), 786-793.

Journal Article Type Article
Acceptance Date Apr 11, 2019
Online Publication Date Apr 9, 2019
Publication Date Apr 9, 2019
Deposit Date Apr 15, 2019
Publicly Available Date Apr 10, 2020
Journal ChemPlusChem
Electronic ISSN 2192-6506
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 84
Issue 7
Pages 786-793
Public URL
Publisher URL
Additional Information This is the peer reviewed version of the following article: S. Cot, M. K. Leu, A. Kalamiotis, G. Dimitrakis, V. Sans, I. de?Pedro, I. Cano, ChemPlusChem 2019, 84, 786., which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.


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