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题名: Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Gramine (C11H14N2)
作者: Chen Jingtao1, 2;  Kong Yuxia1;  Di Youying1;  Yang Weiwei1;  Tan Zhicheng3
关键词: alkaloids ;  adiabatic calorimetry ;  low-temperature heat capacity ;  oxygen-bomb combustion calorimetry ;  standard molar enthalpy of formation ;  thermodynamics
刊名: CHINESE JOURNAL OF CHEMISTRY
发表日期: 2011-11-01
DOI: 10.1002/cjoc.201180392
卷: 29, 期:11, 页:2278-2284
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: Low-temperature heat capacities of gramine (C11H14N2) were measured by a precision automated adiabatic calorimeter over the temperature range from 78 to 401 K. A polynomial equation of heat capacities as a function of temperature was fitted by least squares method. Based on the fitted polynomial, the smoothed heat capacities and thermodynamic functions of the compound relative to the standard reference temperature 298.15 K were calculated and tabulated at 5 K intervals. The constant-volume energy of combustion of the compound at T=298.15 K was measured by a precision oxygen-bomb combustion calorimeter as Delta(c)U=-(35336.7 +/- 13.9) J center dot g-1. The standard molar enthalpy of combustion of the compound was determined to be ?cHm0=-(6163.2 +/- 2.4) kJ center dot mol-1, according to the definition of combustion enthalpy. Finally, the standard molar enthalpy of formation of the compound was calculated to be;cHm0=-(166.2 +/- 2.8) kJ center dot mol-1 in accordance with Hess law.
语种: 英语
WOS记录号: WOS:000297414100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142419
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.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Shaanxi Inst Educ, Dept Chem & Chem Engn, Xian 710061, Shaanxi, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Chen Jingtao,Kong Yuxia,Di Youying,et al. Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Gramine (C11H14N2)[J]. CHINESE JOURNAL OF CHEMISTRY,2011,29(11):2278-2284.
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