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题名: Low-temperature heat capacity and thermodynamic properties of crystalline carboxin (C12H13NO2S)
作者: Wang, MH;  Tan, ZC;  Sun, XH;  Xu, F;  Kong, LG;  Sun, LX;  Zhang, T
关键词: carboxin ;  heat capacity ;  thermodynamic functions ;  adiabatic calorimetry ;  TG ;  DSC
刊名: THERMOCHIMICA ACTA
发表日期: 2004-03-05
DOI: 10.1016/j.tca.2003.08.013
卷: 411, 期:2, 页:203-209
收录类别: SCI
文章类型: Article
项目归属: 1504,1501
产权排名: 1;1
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: Carboxin was synthesized and its heat capacities were measured with an automated adiabatic calorimeter over the temperature range from 79 to 380K. The melting point, molar enthalpy (Delta(fus)H(m)) and entropy (Delta(fus)S(m)) of fusion of this compound were determined to be 365.29 +/- 0.06K, 28.193 +/- 0.09 kJ mol(-1) and 77.180 +/- 0.02 J mol(-1) K-1, respectively. The purity of the compound was determined to be 99.55 mol% by using the fractional melting technique. The thermodynamic functions relative to the reference temperature (298.15 K) were calculated based on the heat capacity measurements in the temperature range between 80 and 360 K. The thermal stability of the compound was further investigated by differential scanning calorimetry (DSC) and thermogravimetric (TG) analysis. The DSC curve indicates that the sample starts to decompose at ca. 290degreesC with the peak temperature at 292.7degreesC. The TG-DTG results demonstrate the maximum mass loss rate occurs at 293degreesC corresponding to the maximum decomposition rate. (C) 2003 Elsevier B.V All rights reserved.
关键词[WOS]: DIFFERENTIAL SCANNING CALORIMETRY ;  PURITY ;  FUSION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000189166000011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81939
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.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.NW Univ Xian, Coll Chem Engn, Xian 710069, Peoples R China

Recommended Citation:
Wang, MH,Tan, ZC,Sun, XH,et al. Low-temperature heat capacity and thermodynamic properties of crystalline carboxin (C12H13NO2S)[J]. THERMOCHIMICA ACTA,2004,411(2):203-209.
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