The isobaric heat capacities and thermodynamic properties of ionic liquid 1-ethylpyridinium bis(trifluoromethylsulfonyl)imide
作者:Ling Zheng、Long Li、Ya-Fei Guo、Wei Guan、Da-Wei Fang
DOI:10.1007/s10973-017-6807-1
日期:2018.3
spectroscopy and thermal gravity analysis. The molar heat capacities of [C2py][NTf2] were measured using a heat-flow calorimeter with “3D Calvet” calorimetric sensor from (293 to 312) K. The experiment value of molar heat capacity 502.15 J K−1 mol−1 at 298.15 K was obtained. Moreover, the estimation values of molar heat capacity were calculated by using 4 methods at 298.15 K, and the result showed the Paulechka
合成了离子液体1-乙基吡啶双(三氟甲基磺酰基)酰亚胺([C 2 py] [NTf 2 ]),并通过1 H NMR光谱,13 C NMR光谱和热重分析进行了表征。的摩尔热容[C 2吡啶] [NTF 2 ]使用与“3D考维”量热传感器的热流动量热计从(293至312)K的摩尔热容502.15Ĵk中的实验测量值-1 摩尔- 1个获得298.15K。此外,在298.15 K下使用4种方法计算了摩尔热容的估计值,结果表明Paulechka等人的方法更适合预测IL [C 2 py] [NTf 2 ],误差小于2%。此外,凝固点 Ť * 通过冰点降低,这是大约等于实验值305.08 K.融合Δ的摩尔焓计算˚F ħ 米 = 26.77千焦摩尔-1,摩尔熔化熵Δ德 小号 米 = 90.60 J摩尔-1 K -1 并且计算出冻结常数 K f。