| 0.716 H2O+0.284 n-C4H9OH二元体系的热力学性质 |
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| 引用本文： | 南照东,邓英霞,薛霞,谭志诚. 0.716 H2O+0.284 n-C4H9OH二元体系的热力学性质[J]. 化工学报, 2006, 57(2): 237-240 |
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| 作者姓名： | 南照东 邓英霞 薛霞 谭志诚 |
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| 作者单位： | 曲阜师范大学化学科学学院,山东,曲阜,273165;中国科学院大连化学物理研究所热化学实验室,辽宁,大连,116023 |
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| 基金项目： | 中国科学院资助项目 , 山东省博士基金 |
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| 摘 要： | 用全自动低温绝热量热计测定了水和正丁醇二元体系（0.716 H2O+0.284 n-C4H9OH）在78～320 K温区的摩尔热容Cp，m.建立了Cp，m与温度T的函数关系.结果表明，该水和正丁醇二元混合体系在（111.9±1.2）K发生玻璃化转变，在（179.26±0.77）K和（269.69±0.14）K发生分别对应正丁醇和水的固 液相变.获得了水的相变焓和相变熵.计算了以298.15 K为基准的混合物的热力学函数.
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| 关 键 词： | 绝热量热法 热容 热力学 水 正丁醇 |
| 文章编号： | 0438-1157（2006）02-0237-04 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-01-242005-04-04 |
Thermodynamic properties of binary system of 0.716 H2O+0.284 n-C4H9OH |
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| NAN Zhaodong,DENG Yingxia,XUE Xia,TAN Zhicheng. Thermodynamic properties of binary system of 0.716 H2O+0.284 n-C4H9OH[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(2): 237-240 |
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| Authors: | NAN Zhaodong DENG Yingxia XUE Xia TAN Zhicheng |
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| Abstract: | The molar heat capacity values of the binary system composed of 0.716 molar fraction H2O+0.284 molar fraction n-C4H9OH were measured by an adiabatic calorimeter in the temperature range from 78 K to 320 K.The functional relationships of heat capacity with respect to thermodynamic temperature were established.Glass-transition occurred at(111.9±1.2)K.The phase transitions took place at (179.26±0.77)K and (269.69±0.14)K corresponding to the solid-liquid phase transitions of n-butanol and water, respectively. The phase-transition enthalpy and entropy of water were calculated. The thermodynamic functions of the binary systems relative to 298.15 K were derived based on the relationships of the thermodynamic functions and the function of the measured heat capacity with respect to temperature. |
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| Keywords: | adiabatic calorimetry heat capacity thermodynamics water n-butanol |
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