Effect of chloride salts and microwave on polyethylene terephthalate (PET) hydrolysis by iron chloride/acetic acid Lewis/Brønsted acidic deep eutectic solvent
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Título: | Effect of chloride salts and microwave on polyethylene terephthalate (PET) hydrolysis by iron chloride/acetic acid Lewis/Brønsted acidic deep eutectic solvent |
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Autor/es: | Rollo, Marco | Perini, Massimo Augusto Giuseppe | Sanzone, Alessandro | Polastri, Lorenzo | Tiecco, Matteo | Torregrosa-Chinillach, Alejandro | Martinelli, Elisa | Ciancaleoni, Gianluca |
Grupo/s de investigación o GITE: | Catálisis Estereoselectiva en Síntesis Orgánica (CESO) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Orgánica | Universidad de Alicante. Instituto Universitario de Síntesis Orgánica |
Palabras clave: | Polyethylene terephthalate (PET) | Chloride salts | Microwave | Hydrolysis | Iron chloride | Acetic acid | Lewis/Brønsted acidic deep eutectic solvent |
Fecha de publicación: | 21-nov-2023 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | RSC Sustainability. 2024, 2: 187-196. https://doi.org/10.1039/D3SU00205E |
Resumen: | Chemical recycling offers a convenient solution for the disposal of plastic items made of polyethylene terephthalate (PET), but there is still much room for improvement in terms of integration into the current waste treatment cycles. Recently, deep eutectic solvents (DESs) have exhibited interesting properties in PET glycolysis and hydrolysis, in some cases also in mild conditions. In particular, we recently contributed using Lewis/Brønsted acidic DESs (LBDESs), obtaining good results with iron(III) chloride and sulfonic acids. However, the choice of weaker acids such as acetic acid is more cost-effective and sustainable, with associated reduced risk of corrosion and improved safety. In this study, we demonstrate that a simple post-reaction procedure significantly enhances the yield of terephthalic acid (TA) using FeCl3⋅6H2O/acetic acid (molar ratio 1:1) LBDES, from 4% (literature value) to 54% under the same experimental conditions. Furthermore, we investigate the effect of chloride salts as additives and microwave irradiation on the reaction, reaching quantitative conversion and high yield in TA in 10 minutes and 180 °C. |
Patrocinador/es: | This research is supported by the Ministry of University and Research (MUR) as part of the PON 2014-2020 “Research and Innovation” resources – Green/Innovation Action – DM MUR 1061/2022. University of Pisa is acknowledged for financial support (Fondi di Ateneo 2022 and PRA_2022_34). |
URI: | http://hdl.handle.net/10045/138747 |
ISSN: | 2753-8125 |
DOI: | 10.1039/D3SU00205E |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1039/D3SU00205E |
Aparece en las colecciones: | INV - CESO - Artículos de Revistas |
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Rollo_etal_2024_RSCSustain.pdf | 1,12 MB | Adobe PDF | Abrir Vista previa | |
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