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 CO 2 capture. CO 2 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 CO 2 capture capacity of 18.5 wt % and good thermal stability ( T d = 521.6 K) make DAIL a good candidate for industrial applications for CO 2 capture.
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Zhang et al. (2013) studied this question.
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