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Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts

[Image: see text] Plastic production has steadily increased worldwide at a staggering pace. The polymer industry is, unfortunately, C-intensive, and accumulation of plastics in the environment has become a major issue. Plastic waste valorization into fresh monomers for production of virgin plastics...

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Autores principales: Shirazimoghaddam, Shadi, Amin, Ihsan, Faria Albanese, Jimmy A, Shiju, N. Raveendran
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9936547/
https://www.ncbi.nlm.nih.gov/pubmed/36820227
http://dx.doi.org/10.1021/acsengineeringau.2c00029
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author Shirazimoghaddam, Shadi
Amin, Ihsan
Faria Albanese, Jimmy A
Shiju, N. Raveendran
author_facet Shirazimoghaddam, Shadi
Amin, Ihsan
Faria Albanese, Jimmy A
Shiju, N. Raveendran
author_sort Shirazimoghaddam, Shadi
collection PubMed
description [Image: see text] Plastic production has steadily increased worldwide at a staggering pace. The polymer industry is, unfortunately, C-intensive, and accumulation of plastics in the environment has become a major issue. Plastic waste valorization into fresh monomers for production of virgin plastics can reduce both the consumption of fossil feedstocks and the environmental pollution, making the plastic economy more sustainable. Recently, the chemical recycling of plastics has been studied as an innovative solution to achieve a fully sustainable cycle. In this way, plastics are depolymerized to their monomers or/and oligomers appropriate for repolymerization, closing the loop. In this work, PET was depolymerized to its bis(2-hydroxyethyl) terephthalate (BHET) monomer via glycolysis, using ethylene glycol (EG) in the presence of niobia-based catalysts. Using a sulfated niobia catalyst treated at 573 K, we obtained 100% conversion of PET and 85% yield toward BHET at 195 °C in 220 min. This approach allows recycling of the PET at reasonable conditions using an inexpensive and nontoxic material as a catalyst.
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spelling pubmed-99365472023-02-18 Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts Shirazimoghaddam, Shadi Amin, Ihsan Faria Albanese, Jimmy A Shiju, N. Raveendran ACS Eng Au [Image: see text] Plastic production has steadily increased worldwide at a staggering pace. The polymer industry is, unfortunately, C-intensive, and accumulation of plastics in the environment has become a major issue. Plastic waste valorization into fresh monomers for production of virgin plastics can reduce both the consumption of fossil feedstocks and the environmental pollution, making the plastic economy more sustainable. Recently, the chemical recycling of plastics has been studied as an innovative solution to achieve a fully sustainable cycle. In this way, plastics are depolymerized to their monomers or/and oligomers appropriate for repolymerization, closing the loop. In this work, PET was depolymerized to its bis(2-hydroxyethyl) terephthalate (BHET) monomer via glycolysis, using ethylene glycol (EG) in the presence of niobia-based catalysts. Using a sulfated niobia catalyst treated at 573 K, we obtained 100% conversion of PET and 85% yield toward BHET at 195 °C in 220 min. This approach allows recycling of the PET at reasonable conditions using an inexpensive and nontoxic material as a catalyst. American Chemical Society 2023-01-03 /pmc/articles/PMC9936547/ /pubmed/36820227 http://dx.doi.org/10.1021/acsengineeringau.2c00029 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Shirazimoghaddam, Shadi
Amin, Ihsan
Faria Albanese, Jimmy A
Shiju, N. Raveendran
Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title_full Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title_fullStr Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title_full_unstemmed Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title_short Chemical Recycling of Used PET by Glycolysis Using Niobia-Based Catalysts
title_sort chemical recycling of used pet by glycolysis using niobia-based catalysts
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9936547/
https://www.ncbi.nlm.nih.gov/pubmed/36820227
http://dx.doi.org/10.1021/acsengineeringau.2c00029
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