气体在离子液体中的溶解性能

Recent Progress of Solubilizing Gases in Ionic Liquids

系统地介绍了气体如CO2、CO、O2、H2、SO2、N2以及低级烷烃和烯烃在不同离子液体中的溶解性能以及测量溶解度的方法,总结了气体在不同离子液体中溶解性能的一般规律。不同气体在离子液体中的溶解度差别很大。认为低压下H2和N2除外,其他气体在离子液体中溶解度随温度的升高而减小,随压力的升高而增大。气体在离子液体中的溶解度还与离子液体的极性有关,一般随离子液体的极性增大,气体的溶解度相应减少。离子液体中的阴离子对气体的溶解度影响较大,而阳离子的影响较小。

The solubility of various gases such as CO2, CO, O2, H2, SO2, N2, alkanes and alkenes in different ionic liquids and the methods for measuring the solubility were reviewed, and the basic laws of the gas solubility in ionic liquids were summarized. The solubilities of different gases in ionic liquid are varied greatly. It is concluded that the solubilities of all gases decrease with temperature and increase with pressure except for hydrogen and nitrogen. The solubility of gas in ionic liquid is also related with the polarity of ionic liquid. Generally, the gas solubility decreases with the increasing polarity of ionic liquid. The anion of ionic liquid appears to play the most signicifant role in determining the gas solubility, whereas the cation has little effect on the solubility.