[EMmim][NTf<sub>2</sub>]—a Novel Ionic Liquid (IL) in Catalytic CO<sub>2</sub> Capture and ILs’ Applications
Xin He, Yangyan Gao, Yunlei Shi, Xiaowen Zhang, Zhiwu Liang, Riguang Zhang, Xingfei Song, Qinghua Lai, Hertanto Adidharma, Armistead G. Russell, Eric G. Eddings, Weiyang Fei, Fangqin Cheng, Shik Chi Edman Tsang, Jianji Wang, Maohong Fan
Abstract
Abstract Ionic liquids (ILs) have been used for carbon dioxide (CO 2 ) capture, however, which have never been used as catalysts to accelerate CO 2 capture. The record is broken by a uniquely designed IL, [EMmim][NTf 2 ]. The IL can universally catalyze both CO 2 sorption and desorption of all the chemisorption‐based technologies. As demonstrated in monoethanolamine (MEA) based CO 2 capture, even with the addition of only 2000 ppm IL catalyst, the rate of CO 2 desorption—the key to reducing the overall CO 2 capture energy consumption or breaking the bottleneck of the state‐of‐the‐art technologies and Paris Agreement implementation—can be increased by 791% at 85 °C, which makes use of low‐temperature waste heat and avoids secondary pollution during CO 2 capture feasible. Furthermore, the catalytic CO 2 capture mechanism is experimentally and theoretically revealed.