study, the anion exchange reaction of an organic cation chloride with excess KHCO2 to synthesize formate-based ionic liquids (ILs) was performed in water, and the water-miscible IL products were easily obtained via salting-out phase separation caused by the excess KHCO2. According to the synthesis results, a set of heuristic rules could be generated as follows. First of all, the more “hydrophobic” ILs required
在这项研究中,有机阳离子
氯化物与过量的KHCO 2进行阴离子交换反应以合成
甲酸基
离子液体(ILs),并且易溶于
水的IL产物易于通过盐析相分离而获得,多余的KHCO 2。根据综合结果,可以如下生成一组启发式规则。首先,“疏
水性” IL越多,盐析相分离所需的过量KHCO 2越少。其次,具有长阳离子烷基链(例如辛基)的两亲性离子分子很可能形成反胶束以包封
无机盐(即KCl),导致
钾的相对较高残留量+和Cl - 。最后,冷却将对盐析相分离产生积极影响,从而扩大了该方法的应用范围。例如,在-18℃下制备[C 2 -MIm] HCO 2,因为必须通过冷却将其相分离。还对这些IL的基本特性进行了彻底的表征和分析,例如熔点,热分解温度,密度,折射率,表面张力,粘度和电导率等。