Support-Free Porous Polyamine Particles for CO2 Capture

CO 2 emission from fossil fuel combustion is a major anthropogenic factor for global warming. Solid amine sorbents may be used to remove CO 2 from waste flue gases before their emission into the atmosphere. These particles are currently obtained by loading amine-containing compounds or polymers onto premade or commercially available porous supports. These supports play no active role in CO 2 uptake and increase the amount of heat or cost required to regenerate CO 2 -sorbed particles by heating. Reported in this communication are the preparation, by precipitation polymerization, of support-free polyamine porous particles and the performance of these particles in CO 2 capture at room temperature and release at 100 °C.