Comparative Study on Physicochemical Properties of Protic Ionic Liquids Based on Allylammonium and Propylammonium Cations
Comparative Study on Physicochemical Properties of Protic Ionic Liquids Based on Allylammonium and Propylammonium Cations
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DOI：
10.1021/je301284x
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发表时间：
2013-08
影响因子：
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通讯作者：
T. Yasuda;H. Kinoshita;M. S. Miran;S. Tsuzuki;M. Watanabe
中科院分区：
文献类型：
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作者：
T. Yasuda;H. Kinoshita;M. S. Miran;S. Tsuzuki;M. Watanabe
为了获得高导电性的质子离子液体（PIL），用三氟甲磺酸中和一系列烯丙基胺（烯丙基二甲胺、烯丙基二乙胺和二烯丙基甲胺）制备了质子离子液体（PIL），并将它们的物理化学性质，包括热性质和传输性质，与一系列丙胺（二甲基丙胺、二乙基丙胺和甲基二丙胺）的PIL进行了比较。烯丙基铵基PIL的熔点和离子电导率分别低于和高于具有相同碳原子数的阳离子的相应的丙基铵基PIL。这两个系列的PIL的性质的差异的起源进行了研究的基础上的摩尔浓度，阳离子和阴离子的自扩散系数，和离子性的评价。烯丙基铵型离子液体的摩尔浓度和离子度均高于相应的丙基铵型离子液体，而离子度则低于相应的丙基铵型离子液体。
Protic ionic liquids (PILs) were prepared by neutralization of a series of allylamines (allyldimethylamine, allyldiethylamine, and diallylmethylamine) with trifluoromethanesulfonic acid, in order to achieve highly conductive PILs, and their physicochemical properties, including thermal and transport properties, were compared with PILs from a series of propylamines (dimethylpropylamine, diethylpropylamine, and methyldipropylamine). The melting point and ionic conductivity of the allylammonium-based PILs were lower and higher than those of the corresponding propylammonium-based PILs having cations with the same number of carbon atoms, respectively. The origin of the difference in the properties of these two series of PILs was investigated based on the evaluation of the molar concentration, self-diffusion coefficient of the cations and anions, and ionicity. The molar concentration and ionicity of the allylammonium-based PILs were higher than those of the corresponding propylammonium-based PILs, whereas the d...