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Heat capacities and thermodynamic functions of p-chlorobenzoic acid
Tan, ZC; Sun, LX; Meng, SH; Li, L; Xu, F; Yu, P; Liu, BP; Zhang, JB
关键词Adiabatic Calorimetry Heat Capacity Thermodynamic Function P-chlorobenzoic Acid
刊名JOURNAL OF CHEMICAL THERMODYNAMICS
2002-09-01
DOI10.1016/S0021-9614(02)00165-9
34期:9页:1417-1429
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Thermodynamics ; Chemistry, Physical
研究领域[WOS]Thermodynamics ; Chemistry
关键词[WOS]AUTOMATED ADIABATIC CALORIMETER ; SYNTHETIC SAPPHIRE ALPHA-AL2O3
英文摘要The heat capacities of p-chlorobenzoic acid were measured in the temperature range from 80 to 580 K by means of an automatic adiabatic calorimeter equipped with a small sample cell of internal volume of 7.4cm(3). The construction and procedures of the calorimetric system were described in detail. The performance of this calorimetric apparatus was evaluated by heat capacity measurements on alpha-Al2O3. The deviations of experimental heat capacities from the corresponding smoothed values lie within +/-0.28 per cent, while the inaccuracy is within +/-0.40 per cent, compared with the recommended reference data in the whole experimental temperature range. A fusion transition at T = 512.280 K was found from the C-p-T curve of p-chlorobenzoic acid. The enthalpy and entropy of the phase transition, as well as the thermodynamic functions {G((T)) - G((298.15))}, {H-(T) - H-(298.15)} and {S-(T) - S-298.15}, were derived from the heat capacity data. The mass fraction purity of p-chlorobenzoic acid sample used in the present calorimetric study was determined to be 0.99935 by fraction melting approach. (C) 2002 Elsevier Science Ltd. All rights reserved.
语种英语
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WOS记录号WOS:000179070800007
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被引频次:85[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/321008/83159
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Thermochem Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Changde Normal Coll, Dept Chem, Changde 415000, Peoples R China
3.Guandong Coll Petrochem Technol, Maoming 525000, Peoples R China
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Tan, ZC,Sun, LX,Meng, SH,et al. Heat capacities and thermodynamic functions of p-chlorobenzoic acid[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2002,34(9):1417-1429.
APA Tan, ZC.,Sun, LX.,Meng, SH.,Li, L.,Xu, F.,...&Zhang, JB.(2002).Heat capacities and thermodynamic functions of p-chlorobenzoic acid.JOURNAL OF CHEMICAL THERMODYNAMICS,34(9),1417-1429.
MLA Tan, ZC,et al."Heat capacities and thermodynamic functions of p-chlorobenzoic acid".JOURNAL OF CHEMICAL THERMODYNAMICS 34.9(2002):1417-1429.
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