Abstract :
[en] To limit global warming to below 1.5°C, net-zero CO₂ emissions must be achieved by 2050. While reduction of energy consumption and transitioning to renewable energy are essential, it has an insufficient impact in a short-term and worldwide scale.1 Carbon dioxide removal strategies such as Carbon Capture Utilisation and Storage (CCUS) are therefore critical especially in hard-to-abate sectors.2 Current industrial CCUS relies on liquid amine absorption, which suffers from high energy demand and solvent degradation.3 Solid adsorbents offer a promising alternative, yet their CO2 capacity in humid conditions remains a major challenge.4
ETS-10, a titanosilicate zeolite, has shown that it retains its CO₂ uptake under high relative humidity (90% RH) in powder form.5 However, whether this moisture tolerance is preserved in structured configurations remains unclear. Given its production on kg scale, ETS-10 was selected for structuring on cordierite honeycombs via vacuum wash-coating to assess its dynamic performance under realistic flue gas conditions. Initial characterisation (XRD, SEM-EDX, TGA-MS, N₂ sorption) confirmed material purity and porosity. Firstly, static CO₂ and H₂O isotherms were measured, then dynamic breakthrough experiments revealed more insights in mixed streams. ETS-10 structured on honeycombs demonstrated promising CO₂ uptake under humid conditions, suggesting potential for outperforming conventional zeolites when integration precedes H₂O displacement. However, precise capacity values and direct comparisons remain under investigation due to differences in humidity levels and measurement conditions.6
These findings highlight ETS-10’s potential as a moisture-insensitive adsorbent for CO₂ capture in humid flue gas streams, offering a scalable and energy-efficient alternative to conventional technologies.
1DeAngelo, J; Azevedo, I.; Bistline, J.; Clarke, L.; Luderer, G.; Byers, E.; Davis, S. J. Nat Commun 2021, 12, 6096.
2Roy, P.; Mohanty, A. K.; Misra, M. Enivron. Sci. : Adv. 2023, 2 409-423.
3Asif, M.; Suleman, M.; Haq, I.; Jamal, S. Science and Technology. 2018, 8 (6), 998-1031.
4Raganati, F.; Ammendola, P. Energy and Fuels. 2024, 38, 15, 13858-13905.
5Datta, S. J.; Khumnoon, C.; Lee, Z. H.; Moon, W. K.; Docao, S.; Nguyen, T. H.; Hwang, I. C.; Moon, D.; Oleynikov, P.; Terasaki, O.; Yoon, K. B. Science. 2015, 350, (6258), 302-306.
6Liu, S.; Chen, Y.; Yue, B.; Wang, C.; Qin, B.; Chai, Y.; Wu, G.; Li, J.; Han, X.; da-Silva, I.; Manuel, P.; Day, S. J.; Thompson, S. P.; Guan, N.; Yang, S.; Li, L. Chemistry-A European Journal. 2022, 28(50).
