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题名: Low-temperature heat capacity of the azeotropic mixture composed of water plus ethanol plus benzene
作者: Nan, ZD;  Tan, ZC
关键词: heat capacity ;  water ;  ethanol ;  benzene ;  low temperature ;  adiabatic calorimetry
刊名: THERMOCHIMICA ACTA
发表日期: 2004-09-10
DOI: 10.1016/j.tca.2004.03.004
卷: 419, 期:1-2, 页:275-281
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Molar heat capacity of the azeotropic mixture composed of water, ethanol, and benzene was measured by an adiabatic calorimeter from 80 to 320 K. The glass transition and phase transitions of the mixture were determined based on the curve of the heat capacity with respect to temperature. The glass transition occurred at 102.850 K. The phase transitions took place in temperature ranges 140-155 K and 265-280 K corresponding to the solid-liquid phase transitions of ethanol, water and benzene, respectively. The corresponding enthalpies and entropies of the phase transition were calculated to be 0.4157 kJ mol(-1), 2.824 J K-1 mol(-1); 1.293 kJ mol(-1), 4.692 J K-1 mol(-1); 4.876 kJ mol(-1), 17.67 J K-1 mol(-1); respectively. The thermodynamic functions and the excess thermodynamic functions of the mixture relative to temperature 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. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: THERMODYNAMIC PROPERTIES ;  EXTRACTIVE DISTILLATION ;  BINARY-SYSTEM ;  FREE-ENERGIES ;  CALORIMETER ;  ENTROPIES ;  SCALE ;  ETHER
语种: 英语
WOS记录号: WOS:000223762400037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139461
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Qufu Normal Univ, Dept Chem, Qufu 273165, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Nan, ZD,Tan, ZC. Low-temperature heat capacity of the azeotropic mixture composed of water plus ethanol plus benzene[J]. THERMOCHIMICA ACTA,2004,419(1-2):275-281.
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