中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Heat capacities and thermodynamic properties of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid

文献类型:期刊论文

作者Xue Bin; Wang Jian-ya; Tan Zhi-cheng; Wu Tong-hao
刊名chemical research in chinese universities
出版日期2007-07-25
卷号23期号:4页码:460-464
关键词3-(2 adiabatic calorimetry heat capacity thermodynamic function thermal decomposition 2-dichloroethenyl)-2 2-dimethylcyclopropanecarboxylic acid
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.
WOS标题词science & technology ; physical sciences
类目[WOS]chemistry, multidisciplinary
研究领域[WOS]chemistry
收录类别SCI
语种英语
WOS记录号WOS:000248610200021
公开日期2015-11-17
源URL[http://159.226.238.44/handle/321008/140522]  
专题大连化学物理研究所_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
推荐引用方式
GB/T 7714
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.

入库方式: OAI收割

来源:大连化学物理研究所

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