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学科主题: 物理化学
题名: Heat Capacity and Thermodynamic Properties of an Unique Ionic Liquid,1-Ethyl-3-methylimidazolium Tris(pentafluoroethyl)trifluorophosphate
作者: Tan ZC(谭志诚) ;  Zhao JN(赵军宁) ;  Liu QS(刘青山) ;  Sun LX(孙立贤) ;  UrsWelz-Biermann
会议名称: 21st IUPAC International Conference on Chemical Thermodynamics
会议日期: 2010-7-31
出版日期: 2010-07-31
会议地点: Japan
通讯作者: 谭志诚
部门归属: 二室
主办者: International Union of Pure and Applied Chemistry (IUPAC)
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.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/114398
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
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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