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新型丙酮酸离子液体的制备与研究

Preparation and Characterization of Novel Ionic Liquids Based on Pyruvate
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摘要 设计合成了四种新型离子液体:1-乙基-3-甲基咪唑丙酮酸盐、1-正丁基-3-甲基咪唑丙酮酸盐、四乙基铵丙酮酸盐和四丁基铵丙酮酸盐。运用FT-IR、1H NMR和元素分析确定了它们的组成和结构,并进行了相转变温度、热稳定性、电化学性质和溶解性的测试。结果显示,这类离子液体在室温下呈液态,分解温度为180~208℃,电导率的变化范围是0.16~3.0m S/cm,稳定电化学窗口大于2 V,同时表现出良好的溶解性。 Four novel ionic liquids,such as 1- ethyl- 3- methylimidazolium pyruvate,1- n- butyl- 3-methylimidazolium pyruvate,tetraethylammonium pyruvate and tetrabutylammonium pyruvate,were prepared. These ionic liquids were characterized by FT- IR,1H NMR and element analysis,and their structures and compositions were confirmed accordingly. Their glass transition temperature,thermal stability,conductivity,electrochemical window and solubility were investigated. The results showed that they were liquid at room temperature and the decompose temperature was 180 - 208 ℃. Meanwhile,they had higher conductivity( 0. 16 - 3. 0 m S/cm),stable electrochemical window( 2 V)and excellent solubility.
作者 侯亚伟
出处 《广州化工》 CAS 2017年第4期73-76,80,共5页 GuangZhou Chemical Industry
关键词 离子液体 烷基咪唑 季铵 丙酮酸盐 相转变温度 ionic liquid imidazolium quaternary ammonium pyruvate glass transition temperature
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