Han et al. (2026): Role of Epoxide Functionalization of Amines for Development of Direct Air Capture Sorbents with High Cyclic Working Capacity at Low Desorption Temperatures
Joo Yeon Han, Hayoung Jeong, Younghyu Ko, Yohan Cho, Seenu Ravi, Kyu-Min Ryoum, Hyug Hee Han, Yujin Choi, Chaewon Shin, Jeong Woo Han and Youn-Sang Bae, IN: Advanced Science, https://doi.org/10.1002/advs.75091
Broad implementation of the direct air capture (DAC) technology requires sorbents that can achieve high cyclic CO₂ working capacities (WCcyclic) at low desorption temperatures. This study shows that appropriate degrees of butylene oxide (BO) functionalization on amines with different molecular weights (polyethyleneimine (PEI1200 and PEI300) and tris(2-aminoethyl)amine (TREN)) can achieve excellent WCcyclic at low desorption temperatures (40–70 °C).