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Thermodynamic investigation of room temperature ionic liquid - The heat capacity and thermodynamic functions of BMIPF6
Zhang, Z. H.2; Cui, T.; Zhang, J. L.2; Xiong, H.2; Li, G. P.2; Sun, L. X.1; Xu, F.3; Cao, Z.4; Li, F.5,6; Zhao, J. J.5,6
关键词Room Temperature Ionic Liquid Bmipf6 Heat Capacity Adiabatic Calorimetry Glass Translation Thermodynamic Function
刊名JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2010-09-01
DOI10.1007/s10973-009-0610-6
101期:3页:1143-1148
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Analytical ; Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]MOLTEN-SALTS ; THERMAL-ANALYSIS ; SOLVENTS ; ACID ; COMPLEXES ; CATALYSIS ; ENTHALPY ; BEHAVIOR ; CHLORIDE ; WATER
英文摘要The molar heat capacities of the room temperature ionic liquid 1-butyl-3-methylimidazolium hexafluoroborate (BMIPF6) weremeasured by an adiabatic calorimeter in temperature range from 80 to 390 K. The dependence of the molar heat capacity on temperature is given as a function of the reduced temperature (X) by polynomial equations, CP, m (J K-1 mol(-1)) = 204.75 + 81.421X-23.828 X-2 + 12.044X(3) + 2.5442X(4) [X = (T - 132.5)/52.5] for the solid phase (80-185 K), C-P,C-m (J K-1 mol(-1)) = 368.99 + 2.4199X + 1.0027X(2) + 0.43395X(3) [X = (T -230)/35] for the glass state (195 - 265 K), and C-P,C-m (J K-1 mol(-1)) = 415.01 + 21.992X - 0.24656X(2) + 0.57770X(3) [X = (T - 337.5)/52.5] for the liquid phase (285-390 K), respectively. According to the polynomial equations and thermodynamic relationship, the values of thermodynamic function of the BMIPF6 relative to 298.15 K were calculated in temperature range from 80 to 390 K with an interval of 5 K. The glass transition of BMIPF6 was measured to be 190.41 K, the enthalpy and entropy of the glass transition were determined to be Delta H-g = 2.853 kJ mol(-1) and Delta S-g = 14.98 J K-1 mol(-1), respectively. The results showed that the milting point of the BMIPF6 is 281.83 K, the enthalpy and entropy of phase transition were calculated to be Delta(Hm) = 20.67 kJ mol(-1) and Delta(Sm) = 73.34 J K-1 mol(-1).
语种英语
WOS记录号WOS:000281256500045
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141846
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Thermochem Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.PetroChina Pipeline Co, Inst Appl Chem, R&D Ctr, Langfang 065000, Hebei, Peoples R China
3.Liaoning Normal Univ, Fac Chem & Chem Engn, Dalian 116029, Peoples R China
4.Changsha Univ Sci & Technol, Sch Chem & Environm Engn, Changsha 410076, Hunan, Peoples R China
5.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
6.Dalian Univ Technol, Coll Adv Sci & Technol, Dalian 116024, Peoples R China
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GB/T 7714
Zhang, Z. H.,Cui, T.,Zhang, J. L.,et al. Thermodynamic investigation of room temperature ionic liquid - The heat capacity and thermodynamic functions of BMIPF6[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2010,101(3):1143-1148.
APA Zhang, Z. H..,Cui, T..,Zhang, J. L..,Xiong, H..,Li, G. P..,...&Zhao, J. J..(2010).Thermodynamic investigation of room temperature ionic liquid - The heat capacity and thermodynamic functions of BMIPF6.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,101(3),1143-1148.
MLA Zhang, Z. H.,et al."Thermodynamic investigation of room temperature ionic liquid - The heat capacity and thermodynamic functions of BMIPF6".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 101.3(2010):1143-1148.
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