摘要
离子液体具有极低的挥发性、良好的热稳定性和化学稳定性以及结构性质可调等特点,被认为是一种环境友好的溶剂。由于其结构性质可调,可以设计合成出对SO2有较高溶解能力和选择性的离子液体,在SO2的吸收和分离领域得到了研究者的青睐。本文综述了各种用于分离捕集烟气和混合气体中SO2的离子液体,介绍了它们的结构特点、吸收特性和强化方法,探讨了离子液体脱硫的相关机理,最后对离子液体吸收分离SO2中存在的问题、发展方向和应用前景进行了论述。
Room-temperature ionic liquids（ILs）,which have excellent properties,such as extremely low vapor pressure,high thermal and chemical stability and tunable structures,are regarded as environmentally benign solvents.Due to their tunable structures and properties,ILs can be designed to endow with a high solvent power for SO2 absorption and separation,and they have been widely investigated in SO2 absorption and separation by many researchers.The paper briefly introduces the characters of ILs used for SO2 capture and separation from flue gas or mixed gas,the capacity of SO2 absorption in these ILs,the ways to enhance the absorption of SO2,and the mechanism of the absorption.Furthermore,the application prospect of the absorption by ILs is presented,and the existing problems and the further studies are discussed.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2011年第10期2031-2037,共7页
Progress in Chemistry
基金
国家自然科学基金项目(No.20746001)
教育部新世纪优秀人才支持计划项目(No.NCET-08-0710)资助
关键词
离子液体
SO2
分离
吸收
机理
ionic liquids
SO2
separation
absorption
mechanism
