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Current Status of Heat Capacity Measurement Techniques for Ionic Liquids by DSC

DSC를 이용한 이온성 액체 열용량 측정 기술 현황

  • Jo, Ye Lim (Department of Chemical and Biological Engineering, Korea National University of Transportation) ;
  • Kim, Ki-Sub (Department of Chemical and Biological Engineering, Korea National University of Transportation) ;
  • Park, Byung Heung (Department of Chemical and Biological Engineering, Korea National University of Transportation)
  • 조예림 (한국교통대학교 화공생물공학과) ;
  • 김기섭 (한국교통대학교 화공생물공학과) ;
  • 박병흥 (한국교통대학교 화공생물공학과)
  • Received : 2014.04.07
  • Accepted : 2014.04.30
  • Published : 2014.05.31

Abstract

Recently ionic liquids received much attention as novel materials capable of replacing traditional solvents. The applicability of the ionic liquids should be determined based on their physico-chemical properties. Heat capacity is one of the most important properties to be considered when a process is developed using the ionic liquids and currently DSC has been proved as an effective technique to measure the heat capacity. Micro DSCII can measure heat capacities of various liquids by both an isothermal step method and a scanning method. DSC Q100 and MDSC are able to measure heat capacities of several ionic liquids. For each ionic liquid linear regression of the heat capacity as a function of temperature has been performed to increase accuracy. To investigate the feasibility of ionic liquids as PCMs, their heat capacities have been measured by using Pysis I DSC. This paper briefly summarizes the present techniques of measuring heat capacities of ionic liquids by DSC.