Paramagnetic ionic liquid-coated SiO2@Fe3O4 nanoparticles—The next generation of magnetically recoverable nanocatalysts applied in the glycolysis of PET

Cano, Israel; Martin, Carmen; Fernandes, Jesum Alves; Lodge, Rhys W.; Dupont, Jairton; Casado-Carmona, Francisco A.; Lucena, Rafael; Cardenas, Soledad; Sans, Victor; de Pedro, Imanol

Abstract

The functionalization of silica-coated, magnetic Fe3O4 nanoparticles, with an ironcontaining ionic liquid, allows for the synthesis of a Fe3O4@SiO2@(mim)[FeCl4] system that can be employed as a magnetically recoverable nanocatalyst. Herein, we present the use of Fe3O4@SiO2@(mim)[FeCl4] for the glycolysis of PET into BHET under conventional heating. The catalyst achieved nearly 100% yield and selectivity over twelve consecutive reaction cycles at 180 °C and was efficiently recovered without tedious work-up or purification processes. Additional analyses revealed that the amount of catalyst lost after each cycle was negligible and no trace of Fe was found in the purified BHET product.

Citation

Cano, I., Martin, C., Fernandes, J. A., Lodge, R. W., Dupont, J., Casado-Carmona, F. A., Lucena, R., Cardenas, S., Sans, V., & de Pedro, I. (2020). Paramagnetic ionic liquid-coated SiO2@Fe3O4 nanoparticles—The next generation of magnetically recoverable nanocatalysts applied in the glycolysis of PET. Applied Catalysis B: Environmental, 260, Article 118110. https://doi.org/10.1016/j.apcatb.2019.118110

• Journal Article Type: Article
• Acceptance Date: Aug 21, 2019
• Online Publication Date: Aug 22, 2019
• Publication Date: 2020-01
• Deposit Date: Nov 4, 2019
• Publicly Available Date: Aug 23, 2020
• Journal: Applied Catalysis B: Environmental
• Print ISSN: 0926-3373
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 260
• Article Number: 118110
• DOI: https://doi.org/10.1016/j.apcatb.2019.118110
• Keywords: Process Chemistry and Technology; General Environmental Science; Catalysis
• Public URL: https://nottingham-repository.worktribe.com/output/3048850
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0926337319308574
• Additional Information: This article is maintained by: Elsevier; Article Title: Paramagnetic ionic liquid-coated SiO2@Fe3O4 nanoparticles—The next generation of magnetically recoverable nanocatalysts applied in the glycolysis of PET; Journal Title: Applied Catalysis B: Environmental; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.apcatb.2019.118110; Content Type: article; Copyright: © 2019 Elsevier B.V. All rights reserved.
• Contract Date: Nov 4, 2019