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Low-temperature heat capacities and standard molar enthalpy of formation of L-3-(3,4-dihydroxyphenyl) alanine (C9H11NO4)
Di, You-Ying1; Yang, Wei-Wei1; Kong, Yu-Xia1; Shi, Quan2; Tan, Zhi-Cheng2
刊名JOURNAL OF CHEMICAL AND ENGINEERING DATA
2008-04-01
DOI10.1021/je700644s
53期:4页:900-904
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]THERMODYNAMIC PROPERTIES ; CALORIMETER
英文摘要Low-temperature heat capacities Of L-3-(3,4-dihydroxyphenyl) alanine (C9H11NO4) were measured by a precision automated adiabatic calorimeter over the temperature range from (78 to 400) K. A polynomial equation of heat capacities as a function of temperature was fitted by the 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 to be Delta U-c = -(21183.5 +/- 35.0) J.g(-1). The standard molar enthalpy of combustion of the compound was determined to be Delta H-c(m)o = -(4177.8 +/- 6.9) kJ.mol(-1), according to the definition of combustion enthalpy. Finally, the standard molar enthalpy of formation of the compound was calculated to be Delta H-f(m)o = -(935.9 +/- 7.0) kJ.mol(-1) in accordance with Hess law.
语种英语
WOS记录号WOS:000254883400002
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140780
专题中国科学院大连化学物理研究所
作者单位1.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
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GB/T 7714
Di, You-Ying,Yang, Wei-Wei,Kong, Yu-Xia,et al. Low-temperature heat capacities and standard molar enthalpy of formation of L-3-(3,4-dihydroxyphenyl) alanine (C9H11NO4)[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2008,53(4):900-904.
APA Di, You-Ying,Yang, Wei-Wei,Kong, Yu-Xia,Shi, Quan,&Tan, Zhi-Cheng.(2008).Low-temperature heat capacities and standard molar enthalpy of formation of L-3-(3,4-dihydroxyphenyl) alanine (C9H11NO4).JOURNAL OF CHEMICAL AND ENGINEERING DATA,53(4),900-904.
MLA Di, You-Ying,et al."Low-temperature heat capacities and standard molar enthalpy of formation of L-3-(3,4-dihydroxyphenyl) alanine (C9H11NO4)".JOURNAL OF CHEMICAL AND ENGINEERING DATA 53.4(2008):900-904.
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