An ionic liquid composition having the following chemical structural formula: wherein R1, R2, R3, and R4 are independently selected from hydrocarbon groups containing at least 1 and up to 20 carbon atoms, and X- is a cyclic anion that possesses a negatively-charged group reactive with a gaseous electrophilic species, particularly carbon dioxide or sulfur dioxide. Methods for capturing a gaseous electrophilic species, such as CO2 or SO2, by contacting the gaseous electrophilic species with an ionic liquid according to Formula (1) are also described.
具有以下
化学结构式的
离子液体组成物:
其中R1、R2、R3和R4分别选自至少含有1个碳原子且高达20个碳原子的烃基,X-是具有带有负电荷的反应性环状阴离子,特别是
二氧化碳或
二氧化硫。还描述了通过将气态亲电性物种(例如
CO2或SO2)与符合式(1)的
离子液体接触来捕获气态亲电性物种的方法。