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题名: Low temperature heat capacities and standard molar enthalpy of formation of sodium benzoate C6H5COONa (s)
作者: Kong, Yu-Xia1;  Di, You-Ying1;  Qi, Yu-Dong1;  Yang, Wei-Wei1;  Tan, Zhi-Cheng2
通讯作者: You-Ying Di
关键词: Sodium benzoate ;  Adiabatic calorimeter ;  Heat capacity ;  Thermodynamic function ;  Isoperibol solution-reaction calorimeter ;  Standard molar enthalpy of formation
刊名: THERMOCHIMICA ACTA
发表日期: 2009-05-05
DOI: 10.1016/j.tca.2008.12.029
卷: 488, 期:1-2, 页:27-32
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504
产权排名: 5;2
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: Sodium benzoate was synthesized by the method of liquid phase synthesis, in which benzoic acid and anhydrous sodium carbonate were chosen as the reactants. The structure and composition of the compound were characterized by FTIR, chemical analysis, elemental analysis and X-ray powder diffraction techniques. Low temperature heat capacities of the compound were measured by a precision automated adiabatic calorimeter over the temperature range from 78 to 400 K. A polynomial equation of the heat capacities as a function of the temperature was fitted by least square method. The smoothed heat capacities and the thermodynamic functions of the compound relative to 298.15 K have been calculated based on the equation. In accordance with Hess law, the standard molar enthalpy of formation of the title compound C6H5COONa (s) was determined to be Delta H-Gamma(m)sigma[C6H5COONa.s] = -(642.56 +/- 0.64) kJ mol(-1) by using an isoperibol solution-reaction calorimeter. (C) 2009 Elsevier B.V. All rights reserved.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000265477400005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101881
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, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Kong, Yu-Xia,Di, You-Ying,Qi, Yu-Dong,et al. Low temperature heat capacities and standard molar enthalpy of formation of sodium benzoate C6H5COONa (s)[J]. THERMOCHIMICA ACTA,2009,488(1-2):27-32.
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