Abstract
A dual amino ionic liquid with amino-functionalized imidazolium cation and taurine anion was synthesized and characterized. Absorption isotherm of carbon dioxide into the ionic liquid was investigated using a volumetric method at 303.15 and 323.15K. Results showed that absorption capacity reached about 0.9mol carbon dioxide per mol of ionic liquid at ambient pressure, which is a chemical process verified by NMR and FTIR. Moreover, the as-synthesized ionic liquid can be recycled at higher temperatures or under vacuum.
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