Abbott Andrew P, Harris Robert C, Ryder Karl S
Chemistry Department, University of Leicester, Leicester, LE1 7RH,United Kingdom.
J Phys Chem B. 2007 May 10;111(18):4910-3. doi: 10.1021/jp0671998. Epub 2007 Mar 10.
Eutectic mixtures of quaternary ammonium salts with Lewis or Brønsted acids have been described as ionic liquid, but doubt exists over the compositional range for which this description is valid. In the current work, the conductivity, viscosity, density, and surface tension of a number of glycolic mixtures with choline chloride are measured over the mole fraction range 0 to 0.33. The data are fitted to hole theory, and it is proposed that the composition at which the measured conductivity matches the theoretical value is the point at which hole mobility becomes the dominant mechanism for charge mobility. For the mixtures of ethylene glycol and butanediol, this occurs at a ChCl mole fraction of approximately 0.2.
季铵盐与路易斯酸或布朗斯特酸的低共熔混合物已被描述为离子液体，但对于该描述有效的组成范围仍存在疑问。在当前工作中，测量了多种氯胆碱乙醇酸混合物在摩尔分数范围0至0.33内的电导率、粘度、密度和表面张力。数据拟合到空穴理论，并且提出测量的电导率与理论值匹配时的组成是空穴迁移率成为电荷迁移主要机制的点。对于乙二醇和丁二醇的混合物，这发生在氯胆碱摩尔分数约为0.2时。
