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Vol. 38 No. 8 (2026): Vol 38, Issue 8 (2026)

Copyright (c) 2026 Yihuai Hua, Jianfeng Tang, Xiaojin wen, Xue Zhang, Weiping Zeng, Qingbo Su

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This work is licensed under a Creative Commons Attribution 4.0 International License.

CO2 Desorption Characteristics of Zeolite A/X and CMS-240 under Thermal, Vacuum and CH4 Purging Regeneration Conditions

https://doi.org/10.14233/ajchem.2026.36269
Yihuai Hua
CNOOC Gas & Power Group, Research & Development Center, Beijing 100028, P.R. China; CNOOC Key Laboratory of Liquefied Natural Gas and Low-Carbon Technology, Beijing 100028, P.R. China
https://orcid.org/0009-0002-4495-1943
Xiaojin Wen
College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao 266580, P.R. China; Shanghai Power Equipment Research Institute Co. Ltd., Shanghai 200240, P.R. China
https://orcid.org/0009-0002-1877-3127
Weiping Zeng
CNOOC Gas & Power Group, Research & Development Center, Beijing 100028, P.R. China; CNOOC Key Laboratory of Liquefied Natural Gas and Low-Carbon Technology, Beijing 100028, P.R. China
https://orcid.org/0009-0007-4801-6895
Xue Zhang
College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao 266580, P.R. China
https://orcid.org/0009-0009-6092-8111
Qingbo Su
CNOOC Gas & Power Group, Research & Development Center, Beijing 100028, P.R. China; CNOOC Key Laboratory of Liquefied Natural Gas and Low-Carbon Technology, Beijing 100028, P.R. China
https://orcid.org/0000-0001-8044-7475
Jianfeng Tang
College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao 266580, P.R. China
https://orcid.org/0000-0002-9159-2317

Corresponding Author(s) : Jianfeng Tang

tangpaper@126.com

Asian Journal of Chemistry, Vol. 38 No. 8 (2026): Vol 38, Issue 8 (2026)

Abstract

CO2 desorption performance is critical for adsorbent regeneration and process design in CO2 capture systems. This work compared CO2 desorption behaviours of 13X, 4A, 5A zeolites and CMS-240 under thermal, vacuum and CH4 purging conditions. CMS-240 achieved excellent regeneration, with CO2 desorption exceeding 90% under all conditions. For zeolites, pore size had a higher influence on regeneration performance than cation type. During CH4 purging, the total purge volume primarily governed the desorption ratio. Among the tested adsorbents, 13X exhibited the highest CO2 working capacity (3.650 mmol g–1) under thermal regeneration at 200 ºC, providing valuable guidance for adsorbent selection and regeneration optimisation.

Keywords

CO2 desorption Adsorbent regeneration Zeolite 13X CMS-240 CH4 purging Vacuum regeneration
(1)
Hua, Y.; Wen, X.; Zeng, W.; Zhang, X.; Su, Q.; Tang, J. CO2 Desorption Characteristics of Zeolite A X and CMS-240 under Thermal, Vacuum and CH4 Purging Regeneration Conditions. ajc 2026, 38, 2005-2015.
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