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题名: Low-temperature Heat Capacity and Thermodynamic Properties of 2-Thiopheneacetic Acid
作者: Gao Zonghua1;  Shi Quan2, 3;  Tan Zhecheng2, 3;  Lan Xiaozheng4
关键词: 2-thiopheneacetic acid ;  adiabatic calorimetry ;  heat capacity ;  thermodynamic function
刊名: ACTA CHIMICA SINICA
发表日期: 2010-02-14
卷: 68, 期:3, 页:227-232
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The low-temperature heat capacity of 2-thiopheneacetic acid was measured in the temperature range from 78 to 343 K with a high precision automated adiabatic calorimeter. No phase transition or other thermal anomaly was observed in the temperature ranges of 78 similar to 314 and 337 similar to 343 K, in which the molar heat capacities were fitted to two polynomials by means of the least square fitting. A solid-liquid phase transition was observed in the temperature range of 314 similar to 337 K. The melting point, molar enthalpy and entropy of fusion, and molar purity of this compound were determined to be 335.745 K, 16.260 kJ.mol(-1), 48.415 J.K(-1).mol(-1) and 98.56%, respectively. The thermodynamic functions of 2-thiopheneacetic acid relative to the reference temperature 298.15 K were derived based on the heat capacity data in the temperature range of 80 similar to 340 K.
关键词[WOS]: SYNTHETIC SAPPHIRE ALPHA-AL2O3 ;  ADIABATIC CALORIMETER ;  ADSORPTION
语种: 英语
WOS记录号: WOS:000275345400005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141707
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.Binzhou Med Coll, Dept Chem, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China
4.Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong, Peoples R China

Recommended Citation:
Gao Zonghua,Shi Quan,Tan Zhecheng,et al. Low-temperature Heat Capacity and Thermodynamic Properties of 2-Thiopheneacetic Acid[J]. ACTA CHIMICA SINICA,2010,68(3):227-232.
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