(22e) Post-Combustion Dry Phase CO2 Capture with a Charged Polymeric Membrane

Power plants, particularly coal-fired plants, are the largest single point source of CO2 emissions, owning 39.4% of the CO2 released into the atmosphere each year. Research to efficiently capture CO2 in the dry gas state from power plants has received great interest in recent years. A novel microporous polymeric based material composed of poly(ethyleneimine) and epoxy on a non-woven fiberglass support [PEIM/EP] has been specifically developed to address post-combustion CO2 capture from power plants. The material system exhibits high thermal stability in air (up to 200C) and high CO2 adsorption capacity (440 mg CO2 [g PEIM/EP]-1) at 28oC and 85% high relative humidity, near the humidity level a typical coal-fired power plant process. The adsorption profile of increasing partial pressures of CO2 up to 98.6 ± 0.2 kPa for the material system strongly fit the Langmuir isotherm. It is also capable of multiple regeneration and reuse with temperature swing adsorption (TSA) at 140C. Synthesis and characterization of the material including surface area, pore volume and selectivity will be discussed.