Publications by authors named "Youngeun Cheon"
Tetramethylammonium-based molten salts bearing a β-amino acid anion (TMAAs) are synthesized through Michael addition reactions of amines with methyl acrylate followed by hydrolysis and subsequent neutralization by using aqueous tetramethylammonium hydroxide. The CO(2) capture performances of the TMAAs are evaluated and are shown to interact with CO(2) in a 1:1 mode in both water and alcohol. FTIR and (13)C NMR spectroscopic studies on the interactions of TMAAs with CO(2) indicate that the type of CO(2) adduct varies with the solvent used.
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- The reaction between carbon dioxide (CO2) and the amine TBAE is challenging to monitor with traditional one-dimensional spectroscopy due to overlapping signals.
- Researchers utilized two-dimensional infrared correlation spectroscopy (2D IR COS) and principal component analysis (PCA) to analyze these reaction dynamics and discovered that carbonate formation, rather than carbamate, leads to a high CO2 absorption capacity.
- The study illustrates how PCA and 2D IR COS effectively reveal the mechanisms of this reaction and highlight important chemical bands involved, paving the way for better CO2 absorbent design.