| 阻抗法监测离子液体膜的吸附性能 |
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| 引用本文： | 胡强,董建峰,申大忠. 阻抗法监测离子液体膜的吸附性能[J]. 化学传感器, 2008, 28(1): 39-43 |
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| 作者姓名： | 胡强 董建峰 申大忠 |
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| 作者单位： | 山东师范大学化学化工与材料科学学院,山东济南,250014 |
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| 摘 要： | 采用高频阻抗计测定了离子液体与有机溶剂相互作用过程中的电阻抗变化,选用1-甲基-3-正辛基咪唑氟硼酸盐([C8Mim]][BF4])作为模型离子液体,所用有机溶剂包括乙醇、丙酮、乙酸乙酯、四氯化碳.结果表明,在[C8Mim][BF4]中加入丙酮或乙醇后,混合物的电导率和介电常数显著增加,而加入四氯化碳所引起的阻抗变化较小.根据离子液体膜的阻抗变化可以监测膜的吸附特性,该文采用阻抗法和对电导率和介电常数有频率响应的串联式压电传感器实时检测了[C8Mim][BF4]膜吸附有机溶剂蒸气的过程,为研究离子液体的吸附性能提供了一种新的测量方法.
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| 关 键 词： | 离子液体 吸附 阻抗 有机溶剂 |
Monitor the adsorption of an ionic liquid film by impedance sensor |
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| Hu Qiang,Dong Jian-feng,Shen Da-zhong. Monitor the adsorption of an ionic liquid film by impedance sensor[J]. Chemical Sensors, 2008, 28(1): 39-43 |
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| Authors: | Hu Qiang Dong Jian-feng Shen Da-zhong |
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| Affiliation: | Hu Qiang,Dong Jian feng,Shen Da zhong (School of Chemistry,Chemical Engineering , Material Science,Sh,ong Normal University,Jinan 250014,China) |
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| Abstract: | The electric impedance of an ionic liquid during the interaction with an organic solvent was investigated by an impedance analysis method. 1-methyl-3-octylimidazolium fluoroborate C8MimBF4 was used as the model ionic liquid. And acetone, ethanol, ethyl acetate and tetrachloromethane were used as the model organic solvents. The experimental results revealed that the conductivity and dielectric constant of the mixture of C8MimBF4 and acetone or ethanol were increased with increasing concentration of the organ... |
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| Keywords: | ionic liquid adsorption impedance organic solvent |
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