(372t) Porous Ionic Liquids: Theoretical and Experimental Research
AIChE Annual Meeting
2022
2022 Annual Meeting
Separations Division
Poster Session: General Topics on Separations
Tuesday, November 15, 2022 - 3:30pm to 5:00pm
Firstly, the mechanism of absorption of CO2, SO2 and other molecules by silica-based porous ionic liquids is studied by using density functional theory (DFT) (Fig. 1a) [2]. It is found that the most active sites of the silica-based porous ionic liquid for absorption are hydrogen bonding, and the most active sites are around the polyethylene glycol unit. For SO2 absorption, hydrogen bond and Ï-hole bonding are predicted by theoretical calculation (Fig. 1b). The strongest active sites are located at the interface between silica sphere and outer crown [3]. Secondly, a quaternary ammonium based porous ionic liquid was synthesized. The results of the test of the desulfurization performance of fuel extraction show that the desulfurization rate of the porous ionic liquid is larger than the sum of the desulfurization ratio of hollow silica ball and ionic liquid (45.7 SR%), indicating that the structure of the two parts has synergistic effect [4].