公开(公告)号：US20200155997A1

公开(公告)日：2020-05-21

申请号：US16454566

申请日：2019-06-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Joo LEE ,  Ung LEE ,  Hong Gon KIM ,  Shinhye CHO ,  He Won LEE

IPC: B01D53/14 ,  B01D53/50 ,  B01D53/78 ,  C07D487/08 ,  C07D241/04 ,  C07C215/40

Abstract: The present disclosure relates to a hydroxyl group-containing amine-based sulfur dioxide and sulfurous absorbent, and a method for preparing the same. The absorbent uses an ionic liquid in the form of a salt including a diamine compound substituted with a hydroxyl group, and can be used as an absorbent capable of removing not only sulfur dioxide (SO2) but also sulfurous acid (H2SO3) formed by combination of sulfur dioxide with water.