Aminosilicone Solvents for Post-Combustion CO2 Capture

February 22, 2013

This meeting will take place in person at Columbia University & via Webex for remote participants.

Speaker: Dr. Robert Perry
GE Global Research


Alkanolamines have been the most heavily studied materials for post-combustion CO2 capture from flue gas. However, these systems have several negative attributes that have hindered their scale-up, including the huge parasitic energy demand required to heat and condense large quantities of water. Our recent work has shown that solutions of aminosilicones and glycol co-solvents are promising alternatives to the benchmark aqueous organic amine systems. Aminosilicones possess properties that offset some of the deficiencies found in the organic amines, including lower vapor pressures, higher boiling points, greater thermal stability, and lower heat capacity. In addition, the replacement of water with a nonvolatile co-solvent results in a substantial energy saving. Some liquid aminosilicones readily formed solid carbamate salts on exposure to CO2 and that these salts could subsequently be thermally decomposed to give pure CO2 and to regenerate the aminosilicone.

The WebEx presentation will be available at following the event.

Conference PDF