Support-Free Porous Polyamine
Particles for CO<sub>2</sub> Capture
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Abstract
CO<sub>2</sub> emission from fossil fuel combustion is
a major
anthropogenic factor for global warming. Solid amine sorbents may
be used to remove CO<sub>2</sub> 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<sub>2</sub> uptake and increase the amount of heat or cost
required to regenerate CO<sub>2</sub>-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<sub>2</sub> capture at room temperature
and release at 100 °C