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题名: Low-temperature heat capacity and standard molar enthalpy of formation of 9-fluorenemethanol (C14H12O)
作者: Di, YY;  Tan, ZC;  Sun, XH;  Wang, MH;  Xu, F;  Liu, YF;  Sun, LX;  Zhang, HT
关键词: 9-fluorenemethanol ;  adiabatic calorimetry ;  low-temperature heat capacity ;  enthalpy of fusion ;  standard molar enthalpy of combustion ;  standard molar enthalpy of formation
刊名: JOURNAL OF CHEMICAL THERMODYNAMICS
发表日期: 2004-02-01
DOI: 10.1016/j.jct.2003.08.017
卷: 36, 期:2, 页:79-86
收录类别: SCI
文章类型: Article
项目归属: 1504
产权排名: 1;1
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: Low-temperature heat capacities of the 9-fluorenemethanol (C14H12O) have been precisely measured with a small sample automatic adiabatic calorimeter over the temperature range between T = 78 K and T = 390 K. The solid-liquid phase transition of the compound has been observed to be T-fus = (376.567 +/- 0.012) K from the heat-capacity measurements. The molar enthalpy and entropy of the melting of the substance were determined to be Delta(fus)H(m) = (26.273 +/- 0.013) kJ (.) mol(-1) and Delta(fus)S(m) = (69.770 +/- 0.035) J (.) K-1 (.) mol(-1). The experimental values of molar heat capacities in solid and liquid regions have been fitted to two polynomial equations by the least squares method. The constant-volume energy and standard molar enthalpy of combustion of the compound have been determined, Delta(c)U(C14H12O, s) = -(7125.56 +/- 4.62) kJ (.) mol(-1) and Delta(c)H(m)degrees(C14H12O, s) = -(7131.76 +/- 4.62) kJ (.) mol(-1), by means of a homemade precision oxygen-bomb combustion calorimeter at T = (298.15 +/- 0.001) K. The standard molar enthalpy of formation of the compound has been derived, Delta(f)H(m)degrees (C14H12O, s) = -(92.36 +/- 0.97) kJ (.) mol(-1), from the standard molar enthalpy of combustion of the compound in combination with other auxiliary thermodynamic quantities through a Hess thermochemical cycle. (C) 2004 Elsevier Ltd. All rights reserved.
关键词[WOS]: COMBUSTION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000189024100002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81941
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
2.NW Univ Xian, Coll Chem Engn, Xian 710069, Peoples R China

Recommended Citation:
Di, YY,Tan, ZC,Sun, XH,et al. Low-temperature heat capacity and standard molar enthalpy of formation of 9-fluorenemethanol (C14H12O)[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2004,36(2):79-86.
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