Stewart, Jack A., Pearce, Joseph I., Cullen, Matthew J., Kociok-Köhn, Gabrielle, Ward, Benjamin D.  ORCID: https://orcid.org/0000-0003-1406-5940, Davidson, Matthew G. and Jones, Matthew D.
2024.
Zinc {ONO} complexes for the chemical recycling of PET and PLA.
Catalysis Today
445
, 115037.
10.1016/j.cattod.2024.115037
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Abstract
Nine {ONO} ligands were prepared and treated with ZnEt2 to form a range of complexes. The resulting complexes were characterised in solution through 1H and 13C{1H} NMR spectroscopy, and in the solid state through single-crystal XRD and elemental analysis. Moderate reactivity towards lactide polymerisation was demonstrated, with hydroxyl complexes reaching high conversion in 1-2minutes at 300: 1: 1. All complexes successfully degraded PLA to methyl lactate and the effect of reaction time, temperature and catalyst loading was explored. Zn(4)2 successfully produced ethyl and n-butyl lactate and was shown to work in ambient conditions, albeit with reduced yield and selectivity. The production of BHET from waste PET was demonstrated with a selection of the most active catalysts. Zn(4)2 was shown to be capable of sequential PLA/PET degradation and to be tolerant of HDPE/PVC contaminants.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Chemistry |
| Additional Information: | License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by/4.0/, Start Date: 2024-09-04 |
| Publisher: | Elsevier |
| ISSN: | 0920-5861 |
| Date of First Compliant Deposit: | 9 September 2024 |
| Date of Acceptance: | 2 September 2024 |
| Last Modified: | 02 Oct 2024 14:33 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/171940 |
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