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题名: Low-temperature heat capacities and standard molar enthalpy of formation of pyridine-2,6-dicarboxylic acid
作者: Yang Wei-Wei1;  Di You-Ying1;  Kong Yu-Xia1;  Tan Zhi-Cheng2
关键词: pyridine-2,6-dicarboxylic acid ;  adiabatic calorimetry ;  low-temperature heat capacity ;  standard molar enthalpy of formation
刊名: CHINESE PHYSICS B
发表日期: 2010-06-10
DOI: 10.1088/1674-1056/19/6/060517
卷: 19, 期:6
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: This paper reports that the low-temperature heat capacities of pyridine-2,6-dicarboxylicacid were measured by a precision automatic calorimeter over a temperature range from 78 K to 380 K. A polynomial equation of heat capacities as a function of temperature was fitted by the least-squares method. Based on the fitted polynomial, the smoothed heat capacities and thermodynamic functions of the compound relative to the standard reference temperature 298.15 K were calculated and tabulated at intervals of 5 K. The constant-volume energy of combustion of the compound was determined by means of a precision rotating-bomb combustion calorimeter. The standard molar enthalpy of combustion of the compound was derived from the constant-volume energy of combustion. The standard molar enthalpy of formation of the compound was calculated from a combination of the datum of the standard molar enthalpy of combustion of the compound with other auxiliary thermodynamic quantities through a Hess thermochemical cycle.
关键词[WOS]: SOLID-STATE ;  CALORIMETER ;  COMPLEXES
语种: 英语
WOS记录号: WOS:000278613500028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141641
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.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Yang Wei-Wei,Di You-Ying,Kong Yu-Xia,et al. Low-temperature heat capacities and standard molar enthalpy of formation of pyridine-2,6-dicarboxylic acid[J]. CHINESE PHYSICS B,2010,19(6).
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