Title: Review of moisture swing sorbents for carbon dioxide capture from ambient air

Authors: Weishu Wang; Xiangxin Zhang; Jun Liu; Chenyang Liang; Jingzun Niu; Feiyue Wang

Addresses: Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China ' Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China ' Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China ' Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China ' Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China ' Department of Thermal Engineering, College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Henan 450045, China

Abstract: This article reviews the current research status of moisture swing sorbents for CO₂ capture in the air. Moisture swing sorbents are a new type of adsorbent with water as the main energy source. It can directly capture CO₂ in the air, reduce the concentration of CO₂ in the atmosphere, break through traditional thermal and temperature regeneration methods, and provide a new approach to alleviate global warming. This material has been extensively studied by researchers in the past two decades. The development of high adsorption capacity materials is the key to their large-scale application. Therefore, this review aims to introduce the preparation methods of moisture swing sorbents and the key factors affecting their CO₂ adsorption and desorption performance, in order to promote further research and development of moisture swing sorbents.

Keywords: direct air capture; moisture swing sorbents; CO₂ adsorption; CO₂ desorption.

DOI: 10.1504/IJGW.2024.135979

International Journal of Global Warming, 2024 Vol.32 No.2, pp.119 - 147

Received: 05 Sep 2022
Received in revised form: 27 Jun 2023
Accepted: 29 Jun 2023
Published online: 11 Jan 2024 *

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