270450 A Nove Amino-Functionalized Ionic Liquid for CO2 Capture
Ionic liquids (ILs), especially amino-functionalized ionic liquids, have been found to be effective for CO2 capture because of their unique properties such as negligible vapor pressure, high thermal stability and good absorption capacity[1-2]. As reported [3-5], ILs of more amine groups could afford higher CO2 solubility. To explore deeply into this viewpoint, a new ionic liquid is synthesized and used in lab scale of CO2capture experiments to identify the relationship between the structure characteristics and capture performance in terms of the absorption rate and capacity.
In present work, a novel amino-functionalized ionic liquid was synthesized and characterized by 1H NMR, 13C NMR, IR and MS. The physicochemical properties including glass transition temperature and thermal decomposition temperature were tested. Experiment result shows that this ionic liquid is capable of rapid capture 0.174g CO2 / g IL at 303.15K and atmospheric pressure, which is the theoretical maximum for absorption of CO2 chemically. The interactions of the ionic liquid with CO2 were further investigated by comparison of both the FTIR and 13C NMR spectra of the gas-untreated and gas-treated materials to support the experimental and the theoretical results.
Moreover, the synthesized ionic liquid could be recycled under vacuum at 100°C.
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See more of this Group/Topical: Topical G: Innovations of Green Process Engineering for Sustainable Energy and Environment