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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
KeywordBa(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
Source PublicationACTA PHYSICO-CHIMICA SINICA
2008-10-01
DOI10.3866/PKU.WHXB20081025
Volume24Issue:10Pages:1884-1890
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordSTANDARD MOLAR ENTHALPY ; COMPLEX ; ACID
AbstractA 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.
Language英语
WOS IDWOS:000260347300025
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141106
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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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