Equimolar CO2 Capture by N‐Substituted Amino Acid Salts and Subsequent Conversion

Abstract

Steric bulk controls CO₂ absorption: N‐substituted amino acid salts in poly(ethylene glycol) reversibly absorb CO₂ in nearly 1:1 stoichiometry. Carbamic acid is thought to be the absorbed form of CO₂; this was supported by NMR and in situ IR spectroscopy, and DFT calculations. The captured CO₂ could be converted directly into oxazolidinones and thus CO₂ desorption could be sidestepped.