DICP OpenIR
Synthesis, Characterization and Thermochemistry of Hydrated Sodium Phthalate
Yang, Weiwei1; Di, Youying1; Kong, Yuxia1; Jin, Guangxin1; Tan, Zhicheng2
关键词Hydrated Sodium Phthalate Adiabatic Calorimetry Low-temperature Heat Capacity Isoperibol Solution-reaction Calorimetry Standard Molar Enthalpy Of Formation
刊名ACTA CHIMICA SINICA
2010-02-28
68期:4页:294-300
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
关键词[WOS]NICOTINATE
英文摘要Phthalic acid and sodium hydroxide were chosen as the reactants and a product of hydrated sodium phthalate was synthesized by the method of liquid phase synthesis. An X-ray powder diffraction technique, chemical and elemental analyses were applied to characterize the composition and structure of the compound. Low-temperature heat capacities of the substance were measured by a precision automated adiabatic calorimeter over a temperature range from 78 to 366 K. A polynomial equation of the heat capacities as a function of the 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 at an interval of 5 K. A reasonable thermochemical cycle was designed on the basis of the Hess law, and the standard molar enthalpies of dissolution for the reactants and products of the designed solid phase reaction in the selected solvents were measured by an isoperibol solution-reaction calorimeter, respectively. In addition, the enthalpy change of the reaction was determined to be Delta(r)H(m)= 29.073 +/- 1.05 kJ.mol(-1) from the data of the above standard molar enthalpies of dissolution. Eventually, the standard molar enthalpy of formation of hydrated sodium phthalate was derived to be -1493.637 +/- 1.11 kJ.mol(-1) by the combination of the enthalpy change of the reaction with other auxiliary thermodynamic quantities.
语种英语
WOS记录号WOS:000275678300002
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141728
专题中国科学院大连化学物理研究所
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
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Yang, Weiwei,Di, Youying,Kong, Yuxia,et al. Synthesis, Characterization and Thermochemistry of Hydrated Sodium Phthalate[J]. ACTA CHIMICA SINICA,2010,68(4):294-300.
APA Yang, Weiwei,Di, Youying,Kong, Yuxia,Jin, Guangxin,&Tan, Zhicheng.(2010).Synthesis, Characterization and Thermochemistry of Hydrated Sodium Phthalate.ACTA CHIMICA SINICA,68(4),294-300.
MLA Yang, Weiwei,et al."Synthesis, Characterization and Thermochemistry of Hydrated Sodium Phthalate".ACTA CHIMICA SINICA 68.4(2010):294-300.
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