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Synthesis, Characterization and Thermochemistry of the Hydrated Barium Nicotinate
Di You-Ying1; Kong Yu-Xia1; Zhang Shuang1; Yang Wei-Wei1; Wu En-Shen1; Shi Quan2; Tan Zhi-Cheng2
关键词Ba(Nic)(2)Center Dot 3h(2)o(s) Room Temperature Solid Phase Synthesis Adiabatic Calorimetry HeAt Capacity At Low temperAture Isoperibol Solution-reaction Calorimeter Standard Molar Enthalpy Of Formation
刊名ACTA PHYSICO-CHIMICA SINICA
2008-10-01
DOI10.3866/PKU.WHXB20081025
24期:10页:1884-1890
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]STANDARD MOLAR ENTHALPY ; COMPLEX ; ACID
英文摘要A new compound. barium nicotinate trihydrate, wits synthesized by the method of room temperature solid phase synthesis and ball grinder. FTIR, chemical and elemental analyses, and X-ray powder diffraction techniques were applied to characterize the structure and composition of the complex. Low-temperature heat capacities of the solid coordination compound were measured by it precision automated adiabatic calorimeter over the temperature range from 78 to 400 K. A phase transition process occurred in the temperature range of 312-332 K in the heat capacity curve, and the peak temperature, molar enthalpy and entropy of the solid-to-solid phase transition of the complex were determined to be its follows: T-trs=(327.097+/-1.082) K, Delta H-trs(m)=(16.793+/-0.084) kJ center dot mol(-1) and Delta S-trs(m) =(51.340+/- 0.164) J center dot K-1 center dot mol(-1). The experimental values of the molar heat capacities in the temperature regions of 7 8-311 K and 333-400 K were respectively fitted to two polynomial equations. The polynomial fitted values of the molar heat capacities and fundamental thermodynamic functions of the sample relative to the standard reference temperature of 298.15 K were calculated and tabulated at an interval of 5 K. In accordance with Hess law, it thermochemical cycle was designed, the reaction enthalpy of the solid phase reaction was determined its Delta H-t(m)0 =-(84.12+/-0.38) kJ center dot mol(-1), and the standard molar enthalpy of formation of the complex was calculated as Delta H-f(m)0 [Ba(Nic)(2) center dot 3H(2)O(s)]=-(2115.13+/-1.90) kJ center dot mol(-1) by using an isoperibol solution-reaction calorimeter.
语种英语
WOS记录号WOS:000260347300025
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141106
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, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
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Di You-Ying,Kong Yu-Xia,Zhang Shuang,et al. Synthesis, Characterization and Thermochemistry of the Hydrated Barium Nicotinate[J]. ACTA PHYSICO-CHIMICA SINICA,2008,24(10):1884-1890.
APA Di You-Ying.,Kong Yu-Xia.,Zhang Shuang.,Yang Wei-Wei.,Wu En-Shen.,...&Tan Zhi-Cheng.(2008).Synthesis, Characterization and Thermochemistry of the Hydrated Barium Nicotinate.ACTA PHYSICO-CHIMICA SINICA,24(10),1884-1890.
MLA Di You-Ying,et al."Synthesis, Characterization and Thermochemistry of the Hydrated Barium Nicotinate".ACTA PHYSICO-CHIMICA SINICA 24.10(2008):1884-1890.
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