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题名: Molar heat capacity and thermodynamic properties of N-alklypyridinium hexafluorophosphate salts, [C(n)py][PF6] (n=2, 3, 5)
作者: Liu, Qing-Shan1, 2, 3;  Tan, Zhi-Cheng2, 3, 4;  Welz-Biermann, Urs3;  Liu, Xiao-Xia1
关键词: Molar heat capacity ;  N-Alkylpyridinium hexafluorophosphate ;  Thermodynamic function ;  Adiabatic calorimetry
刊名: JOURNAL OF CHEMICAL THERMODYNAMICS
发表日期: 2014
DOI: 10.1016/j.jct.2013.08.024
卷: 68, 页:82-89
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: Molar heat capacities (C-p,C-m) of the ionic liquids (ILs) N-alkylpyridinium hexafluorophosphate [C(n)py][ PF6] (n = 2, 3, 5) were measured with a high-precision automated adiabatic calorimeter (AC). The melting temperatures were determined. The molar enthalpy and entropy of phase transition were calculated according to the data obtained of the molar heat capacities by the empirical equation. The polynomial equations of molar heat capacity as a function of the temperature were fitted before and after the phase transition for each IL compounds. The thermodynamic functions (H-T - H-298.15) and (S-T - S-298.15) were derived from the molar heat capacity values over the temperature range from (80 to 400) K with an interval of 5 K. (C) 2013 Elsevier Ltd. All rights reserved.
关键词[WOS]: TEMPERATURE IONIC LIQUIDS ;  PHYSICOCHEMICAL PROPERTIES ;  ADIABATIC CALORIMETER ;  SMALL SAMPLES
语种: 英语
WOS记录号: WOS:000326271100012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145408
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.Northeastern Univ, Dept Chem, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Adv Rechargeable Batteries Lab, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Liu, Qing-Shan,Tan, Zhi-Cheng,Welz-Biermann, Urs,et al. Molar heat capacity and thermodynamic properties of N-alklypyridinium hexafluorophosphate salts, [C(n)py][PF6] (n=2, 3, 5)[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2014,68:82-89.
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