A solvent that reversibly converts from a nonionic liquid mixture to an ionic liquid upon contact with a selected trigger, e.g., contact with CO
2
, is described. In preferred embodiments, the ionic solvent is readily converted back to the nonionic liquid mixture. The nonionic liquid mixture includes an amidine or guanidine or both, and water, alcohol, or a combination thereof. Single component amine solvents that reversibly convert between ionic and non-ionic states are also described. Some embodiments require increased pressure to convert; others convert at 1 atmosphere.
本文描述了一种可逆地从非
离子液体混合物转变为
离子液体的溶剂,当接触到特定触发器(例如
CO2)时会发生转变。在优选实施例中,离子溶剂可以轻松地转变回非
离子液体混合物。非
离子液体混合物包括酰胺或
胍或两者兼有,以及
水、
酒精或二者的组合。还描述了可逆地在离子和非离子状态之间转变的单组分胺溶剂。一些实施例需要增加压力才能转变;另一些实施例在1大气压下转变。