【摘要】 在(298.15±0.01)K下用转动弹热量计测定了离子液体硫酸乙酯-1-甲基-3-乙基咪唑(EMIES)及合成它的原料1-甲基咪唑的恒容燃烧热,通过计算得到它们的标准燃烧焓ΔcHm分别为(-2671±2)和(-286.3±0.5)kJ·mol-1;标准生成焓ΔfHm分别为(-3060±3)kJ·mol-1和(-2145±4)kJ·mol-1.结合文献上硫酸二乙酯的标准生成焓数据,得到了合成离子液体EMIES的反应热(-102.3±1.0)kJ·mol-1,与合成实验中观察到的强烈放热现象是一致的.根据离子液体EMIES的热容数据,计算了不同温度下EMIES的标准生成焓.更多还原

【Abstract】 Using RBC Ⅱtype oxygen bomb combustion calorimeter, the molar combustion enthalpies of room temperature ionic liquid, 1 ethyl 3 methylimidazolium ethyl sulfate (EMIES), and 1 methylimidazole were determined at T=(298.15±0.01) K. For EMIES =(-2671±2) kJ·mol-1 and for 1 methylimidazole (-286.3±0.5) kJ·mol-1, respectively. The standard formation enthalpies were calculated to be (-3060±3) kJ·mol-1 for EMIES and (-2145±4) kJ·mol-1 for 1 methylimidazole. The reaction: +C2H5OSO3-]更多还原