Glycerol-Derived Water-Lean Amines for Post-Combustion CO Capture: The Improvement in Capacity and Viscosity.

Water-lean absorbents are regarded as a new generation of post-combustion CO capture technology that could significantly relieve those drawbacks posed by traditional aqueous alkanolamines. However, the exponential increase in viscosity during CO absorption remains an urgent issue that needs to be resolved before their practical deployment. In this work, novel water-lean amines based on biomass glycerol have been devised as single-component CO absorbents with low viscosity (79~110 cP at 25  , 29~39 cP at 40  ) under high capacity (12~18 wt % at 25  , 10~17 wt % at 40  ).