A Novel Dual Amino-Functionalized Cation-Tethered Ionic Liquid for CO₂ Capture

Abstract

A novel dual amino-functionalized ionic liquid, 1, 3-di (2′-aminoethyl)-2-methylimidazolium bromide (DAIL), was synthesized and investigated as a potential absorbent for CO2 capture. CO2 absorption behavior on pressure, temperature and concentrations of DAIL in aqueous solution were studied, and the absorption mechanism was investigated by spectroscopic methods and DFT calculations. The CO2 capture capacity of 18.5 wt % and good thermal stability (T d = 521.6 K) make DAIL a good candidate for industrial applications for CO2 capture.

Regeneration performance and absorption/desorption mechanism of tetramethylammonium glycinate aqueous solution for carbon dioxide capture

“…Besides the carbonyl carbon of [Gly] − , the other peaks in the 13 C NMR spectrum just occurred a small signal or had a big shift due to the change of chemical environment. This appearance was similar to the report in many literatures (McDonald et al, 2013;Peng et al, 2013;Zhang et al, 2013b). According to the IR and 13 C NMR spectroscopic analysis, after thermal regeneration, a range of products existed in the aqueous solution as follows: …”

“…Thus, CO 2 release process was not the thermal decomposition of carbamate C O group (Zhang et al, 2013b). As shown in Fig.…”

Highly efficient carbon dioxide capture by a novel amine solvent containing multiple amino groups

“…Finally, the amount of CO 2 absorbed in the solvent was calculated using the equation of state by virtue of the difference between the initial and final equilibrium pressure of two cells. The detailed experimental information is available in our previous work …”

Gas–liquid mass‐transfer properties in CO2 absorption system with ionic liquids

“…However, the absorption performance of conventional ILs still cannot compete with the present technology due to the lower CO 2 absorption capacity. Incorporating functional groups to the anion or cation of ILs to form task-specific ionic liquids (TSILs), such as cation-functionalized ILs, 10 anion-functionalized ILs, 11,12 dual amino-functionalized ILs, 13,14 is another way to enhance the CO 2 absorption capacity. Although TSILs with amino groups can dramatically increase the CO 2 absorption ability, the synthetic procedures and the purification steps are usually complex.…”