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Heat capacities and thermodynamic properties of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid
Xue Bin; Wang Jian-ya; Tan Zhi-cheng; Wu Tong-hao
关键词Adiabatic Calorimetry 3-(2 Heat Capacity 2-dichloroethenyl)-2 Thermodynamic Function 2-dimethylcyclopropanecarboxylic Acid Thermal Decomposition
刊名CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
2007-07-25
23期:4页:460-464
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 heat capacities of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid(a racemic mixture, molar ratio of cis-/trans-structure is 35/65) in a temperature range from 78 to 389 K were measured with a precise automatic adiabatic calorimeter. The sample was prepared with a purity of 98. 75% (molar fraction). A solid-liquid fusion phase transition was observed in the experimental temperature range. The melting point, T-m., enthalpy and entropy of fusion, (Delta)f(us)H(m), Delta S-fus(m), of the acid were determined to be (331.48 +/- 0.03) K, (16.321 +/- 0.031) kJ/mol, and (49.24 +/- 0.19) J/(K center dot mol), respectively. The thermodynamic functions of the sample, H-T - H-298.15, ST - S-298.15 and G(T) - G(298.15), were reported at a temperature intervals of 5 K. The thermal decomposition of the sample was studied using thermogravimetric(TG) analytic technique, the thermal decomposition starts at ca. 418 K and ends at ca. 544 K, the maximum decomposition rate was obtained at 510 K. The order of reaction, preexponential factor and activation energy are n 0.23, A = 7.3 x 10(7) min E = 70.64 kJ/mol, respectively.
语种英语
WOS记录号WOS:000248610200021
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140522
专题中国科学院大连化学物理研究所
作者单位1.Shenyang Univ Technol, Sch Petrochem Engn, Liaoyang 111003, Peoples R China
2.Jilin Univ, Coll Chem, Changchun 130021, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
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Xue Bin,Wang Jian-ya,Tan Zhi-cheng,et al. Heat capacities and thermodynamic properties of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2007,23(4):460-464.
APA Xue Bin,Wang Jian-ya,Tan Zhi-cheng,&Wu Tong-hao.(2007).Heat capacities and thermodynamic properties of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,23(4),460-464.
MLA Xue Bin,et al."Heat capacities and thermodynamic properties of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 23.4(2007):460-464.
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