| 室温离子液体EMIES的标准生成焓 |
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| 引用本文： | 张志恒,关伟,杨家振,谭志诚,孙立贤.室温离子液体EMIES的标准生成焓[J].物理化学学报,2004,20(12):1469-1471. |
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| 作者姓名： | 张志恒 关伟 杨家振 谭志诚 孙立贤 |
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| 作者单位： | Department of Chemistry, Liaoning University, Shenyang 110036;1.Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 |
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| 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 分别为(－2671±2) 和(－286.3±0.5) kJ·mol－1;标准生成焓 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.
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| 关 键 词： | 离子液体 氧弹量热计 标准燃烧焓 标准生成焓 |
| 收稿时间： | 2004-04-02 |
| 修稿时间： | 2004年4月2日 |
The Standard Molar Enthalpy of Formation of Room Temperature Ionic Liquid EMIES |
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| Zhang Zhi,Heng Guan Wei Yang Jia,Zhen Tan Zhi,Cheng Sun Li,Xian.The Standard Molar Enthalpy of Formation of Room Temperature Ionic Liquid EMIES[J].Acta Physico-Chimica Sinica,2004,20(12):1469-1471. |
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| Authors: | Zhang Zhi Heng Guan Wei Yang Jia Zhen Tan Zhi Cheng Sun Li Xian |
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| Institution: | Department of Chemistry, Liaoning University, Shenyang 110036;1.Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 |
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| Abstract: | Using RBC-Ⅱ type 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:
＋ (C2H5)2SO4 → ＋ C2H5OSO3－ ](l)
is strong exothermic and its reaction heat, , was determined to be (－102.3±1.0) kJ·mol－1. The standard formation enthalpy of EMIES, ΔfHT, at different temperatures was calculated on the basis of the heat capacity data of EMIES. |
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| Keywords: | Ionic liquid Oxygen-bomb combustion calorimeter EMIES Stand ardmolar enthalpy of combustion Standard molar enthalpy of formation |
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