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题名: Low-temperature heat capacities and standard molar enthalpy of formation of 4-(2-aminoethyl)-phenol (C8H11NO)
作者: Di You-Ying1;  Kong Yu-Xia1;  Yang Wei-Wei1;  Tan Zhi-Cheng2
通讯作者: Di You-Ying
关键词: 4-(2-aminoethyl)-phenol ;  adiabatic calorimetry ;  low-temperature heat capacity ;  standard molar enthalpy of formation
刊名: CHINESE PHYSICS B
发表日期: 2008-09-01
卷: 17, 期:9, 页:3276-3283
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: This paper reports that low-temperature heat capacities of 4-(2-aminoethyl)-phenol (C8H11NO) are 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 the temperature was fitted by the least square 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 the interval of 5 K. The energy equivalent, epsilon(calor), of the oxygen-bomb combustion calorimeter has been determined from 0.68 g of NIST 39i benzoic acid to be epsilon(calor)=(14674.69 +/- 17.49)J.K-1. 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=-(32374.25 +/- 12.93)J.g(-1). The standard molar enthalpy of combustion for the compound was calculated to be Delta H-c(m)circle minus = -(4445.47 +/- 1.77) kJ . mol(-1) according to the definition of enthalpy of combustion and other thermodynamic principles. Finally, the standard molar enthalpy of formation of the compound was derived to be Delta H-f(m)circle minus(C8H11 NO,s) = -(274.68 +/- 2.06) kJ . mol(-1), in accordance with Hess law.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259596000022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101433
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, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Di You-Ying,Kong Yu-Xia,Yang Wei-Wei,et al. Low-temperature heat capacities and standard molar enthalpy of formation of 4-(2-aminoethyl)-phenol (C8H11NO)[J]. CHINESE PHYSICS B,2008,17(9):3276-3283.
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