Subject Area物理化学
Thermodynamic properties of ionic liquids [Cnpy][PF6] (n = 2, 3)
Liu QS(刘青山); Zhao JN(赵军宁); Yan PF(颜佩芳); Sun LX(孙立贤); Tan ZC(谭志诚); UrsWelz-Biermann; Urs Welz-Biermann
Conference Name2nd Asia Pacific Conference on Ionic Liquids and Green Processes
Conference Date2010-9-07
Conference Place中国
Funding Organization中国科学院大连化学物理研究所
AbstractMolar heat capacities (Cp,m) of the ionic liquids (ILs) N-alkylpyridinium hexafluorophosphate ([Cnpy][PF6] n = 2, 3) were measured with a high-precision automated adiabatic calorimeter [1] in temperature range from 80 to 400 K. Melting temperatures were observed at 374.278 ± 0.593 K for [C2py][PF6] and 370.956 ± 0.309 K for [C3py][PF6]. The enthalpy and entropy of the phase transition were also determined. Two polynomial equations of molar heat capacity as a function of the temperature were fitted before and after the melting temperature for each ionic liquid. The thermodynamic functions (HT – H298.15) and (ST – S298.15) were derived [2] from the molar heat capacity data in the temperature range of T = (80 to 400) K with an interval of 5 K.
Document Type会议论文
Corresponding AuthorTan ZC(谭志诚); Urs Welz-Biermann
Recommended Citation
GB/T 7714
Liu QS,Zhao JN,Yan PF,et al. Thermodynamic properties of ionic liquids [Cnpy][PF6] (n = 2, 3)[C],2010:271/2.
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