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Simultaneous measurement of CO_2 sorption and swelling of phosphate-based ionic liquid 被引量:3

Simultaneous measurement of CO_2 sorption and swelling of phosphate-based ionic liquid
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摘要 The development of alternative CO_2 capture solvents such as ionic liquids(ILs) and nanoparticle organic hybrid materials(NOHMs) have provided interesting options for CO_2 capture. In this study, CO_2 interactions with 1,3-dimethylimidazolium dimethylphosphate([MMIM]DMP),1-ethyl-3-methylimidazolium dimethylphosphate([EMIM]DMP) and 1-ethyl-3-methylimidazolium diethylphosphate([EMIM]DEP) that contain inorganic ester groups based on phosphate, were investigated using ATR FT-IR spectroscopy. CO_2-induced swelling, CO_2 diffusivity and CO_2 capture capacity were simultaneously measured to identify CO_2 capture mechanisms, kinetics and diffusion behaviors as a function of the alkyl chain length of the cation. Henry's law constants of CO_2 were found to be in the range of 4-11 MPa, which is in agreement with those reported in other studies. The development of alternative CO_2 capture solvents such as ionic liquids(ILs) and nanoparticle organic hybrid materials(NOHMs) have provided interesting options for CO_2 capture. In this study, CO_2 interactions with 1,3-dimethylimidazolium dimethylphosphate([MMIM]DMP),1-ethyl-3-methylimidazolium dimethylphosphate([EMIM]DMP) and 1-ethyl-3-methylimidazolium diethylphosphate([EMIM]DEP) that contain inorganic ester groups based on phosphate, were investigated using ATR FT-IR spectroscopy. CO_2-induced swelling, CO_2 diffusivity and CO_2 capture capacity were simultaneously measured to identify CO_2 capture mechanisms, kinetics and diffusion behaviors as a function of the alkyl chain length of the cation. Henry's law constants of CO_2 were found to be in the range of 4-11 MPa, which is in agreement with those reported in other studies.
出处 《Green Energy & Environment》 SCIE 2016年第3期258-265,共8页 绿色能源与环境(英文版)
基金 supported by the National Natural Science Foundation of China (21206165 and U1407111)
关键词 CO2 capture ATR FT-IR spectroscopy Ionic liquids Mechanism DIFFUSIVITY CO_2 capture ATR FT-IR spectroscopy Ionic liquids Mechanism Diffusivity
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