Projects per year
Abstract
Polymer chemical recycling to monomers (CRM) could help improve polymer sustainability, but its implementation requires much better understanding of depolymerization catalysis, ensuring high rates and selectivity. Here, a heterodinuclear [Mg(II)Co(II)] catalyst is applied for CRM of aliphatic polycarbonates, including poly(cyclohexene carbonate) (PCHC), to epoxides and carbon dioxide using solid-state conditions, in contrast with many other CRM strategies that rely on high dilution. The depolymerizations are performed in the solid state giving very high activity and selectivity (PCHC, TOF = 25700 h–1, CHO selectivity >99 %, 0.02 mol %, 140 °C). Reactions may also be performed in air without impacting on the rate or selectivity of epoxide formation. The depolymerization can be performed on a 2 g scale to isolate the epoxides in up to 95 % yield with >99 % selectivity. In addition, the catalyst can be re-used four times without compromising its productivity or selectivity.
Original language | English |
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Pages (from-to) | 18444–18449 |
Number of pages | 6 |
Journal | Journal of the American Chemical Society |
Volume | 144 |
Issue number | 40 |
Early online date | 28 Sept 2022 |
DOIs | |
Publication status | Published - 12 Oct 2022 |
Bibliographical note
The EPSRC ((EP/S018603/1, EP/R027129/1, EP/V003321/1), Oxford Martin School (Future of Plastics), The Royal Society (UF/160021, Fellowship to A.B.), and the UK Catalysis Hub (EP/R027129/1) are acknowledged for research funding. We thank the Material and Chemical Characterization Facility (MC2) at the University of Bath for assistance with TGA-MS experiments.Fingerprint
Dive into the research topics of 'Solid-State Chemical Recycling of Polycarbonates to Epoxides and Carbon Dioxide Using a Heterodinuclear Mg(II)Co(II) Catalyst: Journal of the American Chemical Society'. Together they form a unique fingerprint.Projects
- 4 Finished
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AP19: Developing Catalyst Strategies for a Truly Circular Plastic Economy
Jones, M. (PI)
Engineering and Physical Sciences Research Council
30/11/22 → 28/05/24
Project: Research council
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Hub 'Science' 3: Catalysis for the Circular Economy and Sustainable Manufacturing - WP6: New sustainable polymer architectures for high performance plastics
Buchard, A. (PI)
Engineering and Physical Sciences Research Council
31/05/19 → 31/08/21
Project: Research council
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Hub 'Science' 3: Catalysis for the Circular Economy and Sustainable Manufacturing
Davidson, M. (PI), Buchard, A. (CoI), Hintermair, U. (CoI) & Webster, R. (CoI)
Engineering and Physical Sciences Research Council
1/12/18 → 30/11/24
Project: Research council