Year: 2025
Type: article
Abstract: A key challenge for sorbent‐mediated temperature‐swing direct air capture remains to maximize the difference in CO 2 loading under capture and regeneration conditions (i. e. the working capacity) while minimizing the thermal energy input required to alternate between the two equilibrium states. Herein, peralkylated guanidines were shown to capture close to 1 molar equivalent (or up 4.5 mol CO 2 /kg absorbent) directly from moist air (>60 % RH) at room temperature and completely release the entire quantity of captured CO 2 upon co‐evaporation of water at 70 °C affording concentrated CO 2 with a vapor content of 3 mol% and achieving a high working capacity with minimum temperature swing of 45 °C.
Source: ChemSusChem
Authors: Anders Grundtvig Utzon, Ji‐Woong Lee
Institutions: University of Copenhagen, Novo Nordisk Foundation
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,550
Award: G3511574013
OpenAlex ID: W4407126716