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题名: Calorimetric study and thermal analysis of crystalline 2,4-dinitrobenzaldehyde (C7H4N2O5)
作者: Wang, SX;  Tan, ZC;  Shi, Q;  Di, YY;  Zhang, HT;  Xu, F;  Sun, LX;  Zhang, T
关键词: 2,4-dinitrobenzaldehyde ;  adiabatic calorimetry ;  heat capacity ;  purity determination ;  TG-DTG and DSC analysis
刊名: JOURNAL OF CHEMICAL THERMODYNAMICS
发表日期: 2005-04-01
DOI: 10.1016/j.jct.2004.09.018
卷: 37, 期:4, 页:349-355
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Thermodynamics ;  Chemistry, Physical
研究领域[WOS]: Thermodynamics ;  Chemistry
英文摘要: Calorimetric study and thermal analysis for 2,4-dinitrobenzaldehyde were performed. The low-temperature heat capacity of this compound was measured with a precise automated adiabatic calorimeter over the temperature range from (78 to 368) K. The melting point, molar enthalpy, and molar entropy of fusion of this substance were determined to be (344.91 +/- 0.15) K, (21,177 +/- 14) J (.) mol(-1), and (61.40 +/- 0.07) J (.) K-1 (.) mol(-1), respectively. The melting temperatures for the sample and the absolutely pure compound have been obtained from fractional melting experiments to be (344.910 and 345.146) K, respectively, and the chemical purity of the sample was calculated to be 0.9950 mol fraction according to the Van't Hoff equation. The thermal stability of the compound was further investigated by differential scanning calorimetry and thermogravimetric analysis. (c) 2004 Published by Elsevier Ltd.
关键词[WOS]: HEAT-CAPACITY ;  THERMODYNAMIC PROPERTIES
语种: 英语
WOS记录号: WOS:000228150700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139894
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Wang, SX,Tan, ZC,Shi, Q,et al. Calorimetric study and thermal analysis of crystalline 2,4-dinitrobenzaldehyde (C7H4N2O5)[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2005,37(4):349-355.
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