LAUSR

Abstract Dispersing amino acid ionic liquids (AAILs) in porous supports is an effective method to overcome the viscous and corrosive issues of AAILs. Herein, a facilely synthesized mesoporous polymer—polydivinylbenzene (PDVB) was proposed as the support of AAILs for CO2 capture. A simple AAIL—tetraethylammonium glycinate ([N2222][Gly]) was synthesized and then dispersed in PDVB by physical impregnation. The prepared [N2222][Gly]@PDVB samples were systematically characterized and examined for CO2 capture performance. Owing to the large pore volume and rich mesoporisty of PDVB, the CO2 capacities of [N2222][Gly]@PDVB samples are very impressive, with the highest value of 1.55 mmol/g at 75 °C for 10 vol.% of CO2 balanced in N2. The utilization ratios of dispersed [N2222][Gly] at 75 °C approach the theoretical value of 0.5, suggesting the efficient utilization of [N2222][Gly] for the capture of CO2. The adsorption selectivity and reversibility of [N2222][Gly]@PDVB samples are also very good, justifying their promising application in the capture of CO2 from anthropogenic source.