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	Heat Capacity and Thermodynamic Properties of an Unique Ionic Liquid,1-Ethyl-3-methylimidazolium Tris(pentafluoroethyl)trifluorophosphate
	Tan ZC(谭志诚) ; Zhao JN(赵军宁) ; Liu QS(刘青山) ; Sun LX(孙立贤) ; UrsWelz-Biermann
	2010-07-31
会议名称	21st iupac international conference on chemical thermodynamics
会议日期	2010-7-31
会议地点	japan
页码	187/2
通讯作者	谭志诚
中文摘要	the thermodynamic properties of the titled il compound ([emim][fap], cas-no: 377739-43-0) were studied with high precision adiabatic calorimetry (ac), thermogravimatric analysis (tg-dtg) and differential scanning alorimetry (dsc). the heat capacities were precisely measured in the temperature range from 78 k to 410 k by means of a fully automated adiabatic calorimeter[1]. a solid-solid phase transition at 236.481 0.130 k and a solid-liquid fusion transition at 272.377 0.186 k were observed (shown in the figure). the molar enthalpy and entropy of the two transitions were determined to be 12.58 0.79 kj mol1, 53.19 3.33 j k1 mol1 for the solid-solid transition, and 14.03 0.11 kj mol1, 51.52 0.44 j k1 mol1 for the solid-liquid transition, respectively. the thermodynamic functions were derived from the heat capacity data in the experimental temperature range with an interval of 5 k. the thermostablility of the ionic liquid was further studied by tga and dsc measurements. the results of thermal analysis indicate that the il starts to decompose at about 624 k and completes its mass loss at about 750 k.
会议主办者	international union of pure and applied chemistry (iupac)
学科主题	物理化学
语种	中文
内容类型	会议论文
源URL	[http://159.226.238.44/handle/321008/114398]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
推荐引用方式 GB/T 7714	Tan ZC,Zhao JN,Liu QS,et al. Heat Capacity and Thermodynamic Properties of an Unique Ionic Liquid,1-Ethyl-3-methylimidazolium Tris(pentafluoroethyl)trifluorophosphate[C]. 见:21st iupac international conference on chemical thermodynamics. japan. 2010-7-31.

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