Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Technology Trend in Ionic Liquids

이온성 액체의 기술 동향

  • Lee, Hyunjoo (Reaction Media Research Center, Korea Institute of Science and Technology) ;
  • Lee, Je Seung (Reaction Media Research Center, Korea Institute of Science and Technology) ;
  • Ahn, Byoung Sung (Reaction Media Research Center, Korea Institute of Science and Technology) ;
  • Kim, Hoon Sik (Department of Chemistry, Kyung Hee University)
  • 이현주 (한국과학기술연구원 반응매체연구센터) ;
  • 이제승 (한국과학기술연구원 반응매체연구센터) ;
  • 안병성 (한국과학기술연구원 반응매체연구센터) ;
  • 김훈식 (경희대학교 화학과)
  • Received : 2005.09.08
  • Published : 2005.10.10
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Abstract

Ionic liquids (ILs) are the ionic salts pertaining to liquid-state at lower temperature than $100^{\circ}C$. ILs have attracted attention as new media because of their peculiar chemical, physical or electrical properties such as low volatility, nonflammability, liquid-phase stability at high temperature, high ability in solvating organic, inorganic or polymeric materials, and high ionic conductivity. Since the properties can be modified by assembling the pair using various anions and cations, ILs are often called designer solvents. In addition, ILs have been expected as new green media to replace the volatile organic solvents, which have been widely used in chemical, energy, material, and electronic industries, as well as to enhance the reaction activity and selectivity. In this review paper, the structures, properties, applications, and technology trend of ILS are introduced.

이온성 액체는 $100^{\circ}C$ 이하에서 액체로 존재하는 이온성 염으로 낮은 휘발성, 비가연성, 높은 온도에서의 액체상 안정성, 유기물과 무기물에 대한 높은 용매화 능력, 높은 전기 전도성 등 독특한 화학적, 물리적, 전기적 특성을 갖고 있어 신 개념의 매체로 주목받고 있다. 특히, 이용 목적에 따라 양이온과 음이온을 다양하게 조합하여 그 특성을 변화시킬 수 있어서 디자이너 용매(designer solvent)라고도 불린다. 이온성 액체는 기존 화학산업을 비롯한 에너지, 재료, 전자 등 광범위한 산업분야에서 필수적으로 사용되는 휘발성 유기용매를 대체하여 환경유해물질의 배출을 원천적으로 방지하면서 반응선택성과 반응성을 향상시킬 수 있는 green media로 기대되고 있다. 본 총설에서는 이온성 액체의 구조, 특성, 응용분야와 연구동향에 대해 기술하였다.

Keywords

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