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Low-temperature heat capacities and derived thermodynamic functions of cyclohexane
Nan, ZD; Tan, ZC
关键词Adiabatic Calorimetry Cyclohexane Heat Capacity Sample Container Thermodynamic Function
刊名JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2004
76期:3页:955-963
收录类别SCI
文章类型Article
项目归属1504
产权排名2;2
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The low-temperature heat capacities of cyclohexane were measured in the temperature range from 78 to 350 K by means of an automatic adiabatic calorimeter equipped with a new sample container adapted to measure heat capacities of liquids. The sample container was described in detail. The performance of this calorimetric apparatus was evaluated by heat capacity measurements on water. The deviations of experimental heat capacities from the corresponding smoothed values lie within +/-0.3%, while the inaccuracy is within +/-0.4%, compared with the reference data in the whole experimental temperature range. Two kinds of phase transitions were found at 186.065 and 279.684 K corresponding solid-solid and solid-liquid phase transitions, respectively. The entropy and enthalpy of the phase transition, as well as the thermodynamic functions {H-(T)- H-298.15 K} and {S-(T)-S-298.15 K}, were derived from the heat capacity data. The mass fraction purity of cyclohexane sample used in the present calorimetric study was determined to be 99.9965% by fraction melting approach.
语种英语
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WOS记录号WOS:000222091300027
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81457
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.Qufu Normal Univ, Dept Chem, Shandong 273165, Peoples R China
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Nan, ZD,Tan, ZC. Low-temperature heat capacities and derived thermodynamic functions of cyclohexane[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2004,76(3):955-963.
APA Nan, ZD,&Tan, ZC.(2004).Low-temperature heat capacities and derived thermodynamic functions of cyclohexane.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,76(3),955-963.
MLA Nan, ZD,et al."Low-temperature heat capacities and derived thermodynamic functions of cyclohexane".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 76.3(2004):955-963.
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