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在分析了几类常见的离子液体吸收气体SO_2研究的基础上,针对现有物理化学吸收型离子液体存在的与SO_2结合力强、解析条件苛刻的缺点,重点介绍了新型的脱硫离子液体——醚基功能化咪唑类离子液体,该类离子液体是在物理吸收型咪唑类离子液体阳离子上引入醚基,醚基中的O易对SO_2中的S形成物理的作用力,可以通过增加醚基功能基团的数量形成多吸收位以增加吸收量,且再生条件温和。还对离子液体脱硫过程中的影响因素进行了分析和综述。
Based on the analysis of several common types of SO 2 absorbed by ionic liquids, aiming at the disadvantages of the existing physicochemical absorption type ionic liquids, such as strong binding force with SO 2 and harsh analytical conditions, the new desulfurization ionic liquids - Ether-based functionalized imidazole ionic liquids, which introduce ether groups into the physically absorbed imidazolium-based ionic liquid cation, and the O in the ether group can form a physical force on the S in SO 2 and can be formed by adding an ether group The number of functional groups forms multiple absorption sites to increase absorption, and the regeneration conditions are mild. The influencing factors in the desulfurization of ionic liquids were also analyzed and reviewed.