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Measurements of the heat capacity of an azeotropic mixture of water and n-butanol from 78 to 320 K
Nan, ZD; Tan, ZC; Xing, J; Nan ZD(南照东); Nan ZD(南照东)
KeywordAdiabatic Calorimetry Heat Capacity Excess Heat Capacity Azeotropic Mixture Water N-butanol
Source PublicationCHINESE JOURNAL OF CHEMISTRY
2005-10-01
Volume23Issue:10Pages:1297-1302
Indexed BySCI
SubtypeArticle
Department15
Funding Project1504
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordTHERMODYNAMIC FUNCTIONS
AbstractMolar heat capacities of n-butanol and the azeotropic mixture in the binary system [water (x=0.716) plus n-butanol (x=0.284)] were measured with an adiabatic calorimeter in a temperature range from 78 to 320 K. The functions of the heat capacity with respect to thermodynamic temperature were established for the azeotropic mixture. A glass transition was observed at (111.9 +/- 1.1) K. The phase transitions took place at (179.26 +/- 0.77) 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. A thermodynamic function of excess molar heat capacity with respect to temperature was established, which took account of physical mixing, destructions of self-association and cross-association for n-butanol and water, respectively. The thermodynamic functions and the excess thermodynamic ones 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 and the calculated excess heat capacity with respect to temperature.
Language英语
URL查看原文
WOS IDWOS:000232213200003
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/93489
Collection中国科学院大连化学物理研究所
Corresponding AuthorNan ZD(南照东); Nan ZD(南照东)
Affiliation1.Qufu Normal Univ, Dept Chem, Shandong 273165, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Nan, ZD,Tan, ZC,Xing, J,et al. Measurements of the heat capacity of an azeotropic mixture of water and n-butanol from 78 to 320 K[J]. CHINESE JOURNAL OF CHEMISTRY,2005,23(10):1297-1302.
APA Nan, ZD,Tan, ZC,Xing, J,南照东,&南照东.(2005).Measurements of the heat capacity of an azeotropic mixture of water and n-butanol from 78 to 320 K.CHINESE JOURNAL OF CHEMISTRY,23(10),1297-1302.
MLA Nan, ZD,et al."Measurements of the heat capacity of an azeotropic mixture of water and n-butanol from 78 to 320 K".CHINESE JOURNAL OF CHEMISTRY 23.10(2005):1297-1302.
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