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Leclaire J, Heldebrant DJ, Grubel K, Septavaux J, Hennebelle M, Walter E, Chen Y, Bañuelos JL, Zhang D, Nguyen MT, Ray D, Allec SI, Malhotra D, Joo W, King J. Tetrameric self-assembling of water-lean solvents enables carbamate anhydride-based CO 2 capture chemistry. Nat Chem 2024:10.1038/s41557-024-01495-z. [PMID: 38589626 DOI: 10.1038/s41557-024-01495-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 02/28/2024] [Indexed: 04/10/2024]
Abstract
Carbon capture, utilization and storage is a key yet cost-intensive technology for the fight against climate change. Single-component water-lean solvents have emerged as promising materials for post-combustion CO2 capture, but little is known regarding their mechanism of action. Here we present a combined experimental and modelling study of single-component water-lean solvents, and we find that CO2 capture is accompanied by the self-assembly of reverse-micelle-like tetrameric clusters in solution. This spontaneous aggregation leads to stepwise cooperative capture phenomena with highly contrasting mechanistic and thermodynamic features. The emergence of well-defined supramolecular architectures displaying a hydrogen-bonded internal core, reminiscent of enzymatic active sites, enables the formation of CO2-containing molecular species such as carbamic acid, carbamic anhydride and alkoxy carbamic anhydrides. This system extends the scope of adducts and mechanisms observed during carbon capture. It opens the way to materials with a higher CO2 storage capacity and provides a means for carbamates to potentially act as initiators for future oligomerization or polymerization of CO2.
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Affiliation(s)
- Julien Leclaire
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France.
| | - David J Heldebrant
- Pacific Northwest National Laboratory, Richland, WA, USA.
- Washington State University Pullman, Pullman, WA, USA.
| | | | - Jean Septavaux
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France
- Secoya Technologies, Ottignies-Louvain-la-Neuve, Belgium
| | - Marc Hennebelle
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France
| | - Eric Walter
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Ying Chen
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Difan Zhang
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Debmalya Ray
- Pacific Northwest National Laboratory, Richland, WA, USA
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Sarah I Allec
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Wontae Joo
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jaelynne King
- Pacific Northwest National Laboratory, Richland, WA, USA
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