This update to the previous perspective summarizes recent work in the area of gas solubilities in ionic liquids over the last four years (2017–2020). As research into applications of ionic liquids, especially for gas separations, continues to gain momentum, the importance of understanding the gas + ionic liquid global phase behavior is paramount. The majority of experimental gas solubility studies tend to focus on classic methods like the gravimetric microbalance method and the stoichiometric pressure drop method. There continues to be a significant amount of work on modeling ionic liquids using correlative equation of state to simply model the thermodynamic behavior or purely predictive modeling such as molecular dynamics. The combination of these techniques can be a powerful tool for further understanding of the global phase behavior of gas + ionic liquid systems as well as the screening and/or task-specific design of ionic liquids for specific purposes.

对先前观点的更新总结了过去四年（2017-2020年）在离子液体中气体溶解度领域的最新工作。随着对离子液体，尤其是气体分离应用的研究不断发展，了解气体+离子液体整体相行为的重要性至关重要。大多数实验气体溶解度研究倾向于将重点放在经典方法上，例如重量微量平衡法和化学计量压降法。使用状态相关方程对热力学行为进行简单建模或对分子动力学等纯粹预测模型进行建模，在离子液体建模方面仍存在大量工作。