Propanol functionalized tetramethylguanidine (TMG-Pr-OH) is a liquid that reacts with CO2 to form a viscous Zwitterionic liquid that contains 20.8% by weight CO2. CO2 is chemically bound to the alcohol as an alkylcarbonate, which is then stabilized by hydrogen bonding to the guanidine component. The Zwitterionic liquid can be reverted to its non-ionic form by thermally stripping the CO2 at temperatures near 100 °C.
Revised: September 24, 2010 |
Published: January 1, 2010