SO2 Capture by Two Aluminum-Based MOFs: Rigid-like MIL-53(Al)-TDC versus Breathing MIL-53(Al)-BDC

Metal–organic frameworks MIL-53­(Al)-TDC and MIL-53­(Al)-BDC were explored in the SO2 adsorption process. MIL-53­(Al)-TDC was shown to behave as a rigid-like material upon SO2 adsorption. On the other hand, MIL-53­(Al)-BDC exhibits guest-induced flexibility of the framework with the presence of mult...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2021-08, Vol.13 (33), p.39363-39370
Main Authors: López-Olvera, Alfredo, Zárate, J. Antonio, Martínez-Ahumada, Eva, Fan, Dong, Díaz-Ramírez, Mariana L, Sáenz-Cavazos, Paola A, Martis, Vladimir, Williams, Daryl R, Sánchez-González, Elí, Maurin, Guillaume, Ibarra, Ilich A
Format: Article
Language:English
Subjects:
Energy, Environmental, and Catalysis Applications
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Summary:Metal–organic frameworks MIL-53­(Al)-TDC and MIL-53­(Al)-BDC were explored in the SO2 adsorption process. MIL-53­(Al)-TDC was shown to behave as a rigid-like material upon SO2 adsorption. On the other hand, MIL-53­(Al)-BDC exhibits guest-induced flexibility of the framework with the presence of multiple steps in the SO2 adsorption isotherm that was related through molecular simulations to the existence of three different pore opening phases narrow pore, intermediate pore, and large pore. Both materials proved to be exceptional candidates for SO2 capture, even under wet conditions, with excellent SO2 adsorption, good cycling, chemical stability, and easy regeneration. Further, we propose MIL-53­(Al)-TDC and MIL-53­(A)-BDC of potential interest for SO2 sensing and SO2 storage/transportation, respectively.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.1c09944