论文部分内容阅读
在充满干燥氩气的手套箱中用直接混合等物质的量的EMIC(氯化1-甲基-3-乙基咪唑)和高纯无水InCl3的方法,制备了含稀散金属铟的离子液体EMIInCl4.在298.15K下,利用自行组装的具有恒温环境的溶解反应热量计,测定了离子液体EMIInCl4和EMIC在水中的反应溶解热,并将这些实验数据按Pitzer方程作拟合,分别得到了EMIInCl4和EMIC的无限稀释摩尔溶解热?sHm0和Pitzer溶解焓参数.根据溶解热和水化热数据,估算了InCl-4(g)解离成In3+(g)和4Cl-(g)的解离热,还估算了反应:EMIC+InCl3→EMIInCl4的摩尔反应热?rHm=(-60.37±1.8)kJ?mol-1.在合成离子液体EMIInCl4中也观察到了放热现象,这表明在合成过程中生成了InCl-4.
In a glove box filled with dry argon, an ionic liquid containing indium metal in a diluted state was prepared by directly mixing EMIC (1-methyl-3-ethylimidazolium chloride) and high purity anhydrous InCl3 EMIInCl4 was used to measure the reaction heat of ionic liquid EMIInCl4 and EMIC in water at 298.15K by using self-assembled dissolved reaction calorimeter with constant temperature. The experimental data were fitted according to Pitzer’s equation to obtain EMIInCl4 And EMIC’s infinite dilution molar solvation enthalpy parameter and Pitzer solvation enthalpy parameter. Based on the heat of solution and hydration data, the dissociation heats of InCl-4 (g) dissociation into In3 + (g) and 4Cl- (g) , And the molar reaction heat rHm = (-60.37 ± 1.8) kJ · mol -1 for EMIC + InCl3 → EMIInCl4 was also estimated. An exotherm was also observed in EMIInCl4, a synthetic ionic liquid, indicating that during the synthesis InCl-4.