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学科主题物理化学
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
会议名称21st IUPAC International Conference on Chemical Thermodynamics
会议日期2010-7-31
2010-07-31
会议地点Japan
页码187/2
部门归属二室
主办者International Union of Pure and Applied Chemistry (IUPAC)
英文摘要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.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/114398
专题中国科学院大连化学物理研究所
通讯作者Tan ZC(谭志诚)
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],2010:187/2.
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