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Efficient CO2 Sequestration by a Solid-Gas Reaction Enabled by Mechanochemistry: The Case of L-Lysine

preprint
submitted on 06.12.2019 and posted on 13.12.2019 by Abdal-Azim Al-Terkawi, Frédéric Lamaty, Thomas-Xavier Métro
This study describes an efficient and solvent-free method for the regioselective production of L-lysine ammonium epsilon-carbamate by ball-milling L-lysine under an atmosphere of CO2. The regioselective formation of L-lysine ammonium epsilon-carbamate by this mechanochemical approach was confirmed by a complete analytical study, including 1H-13C and 1H-15N CP MAS NMR measurements as well as liquid NMR analysis, powder X-ray diffraction, thermal analysis, and elemental analysis. Time of milling, rotational speed, milling material, and liquid assistants were screened, while the reversibility of the process was assessed. This milling approach was compared with the syntheses in aqueous solution and in the solid-state without agitation. In addition to be regioselective, the synthesis by solvent-free mechanochemistry was found to be much faster than the other approaches while producing lot less waste.

Funding

CNRS National Institute of Chemistry EMERGENCE@INC2018

History

Email Address of Submitting Author

thomas-xavier.metro@umontpellier.fr

Institution

CNRS

Country

France

ORCID For Submitting Author

0000-0003-2280-3595

Declaration of Conflict of Interest

No conflict of interest to declare

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