Carbon Dioxide Capture from Air Using Amine-Grafted Porous Polymer Networks

Amine-grafted porous polymer networks were investigated for CO 2 capture directly from air (400 ppm CO 2, 78.96% N 2, and 21% O 2 ). Under these ultradilute conditions, PPN-6-CH 2 DETA has an extraordinarily high CO 2 selectivity (3.6 × 10 10 ) and loading capacity (1.04 mol/kg) as calculated using ideal adsorption solution theory. In addition we have shown that the material outperforms other materials based on simulated breakthrough calculations, thus showing great potential to be used in direct air capture applications.