Version 1
: Received: 16 October 2024 / Approved: 17 October 2024 / Online: 17 October 2024 (14:45:29 CEST)
How to cite:
Tonutti, L. G.; Vergara, L.; Querini, C. A.; Dalla Costa, B. O. On the Location and Accessibility of Active Acid Sites in MFI Zeolites Modified by Alkaline Treatment. Preprints2024, 2024101375. https://doi.org/10.20944/preprints202410.1375.v1
Tonutti, L. G.; Vergara, L.; Querini, C. A.; Dalla Costa, B. O. On the Location and Accessibility of Active Acid Sites in MFI Zeolites Modified by Alkaline Treatment. Preprints 2024, 2024101375. https://doi.org/10.20944/preprints202410.1375.v1
Tonutti, L. G.; Vergara, L.; Querini, C. A.; Dalla Costa, B. O. On the Location and Accessibility of Active Acid Sites in MFI Zeolites Modified by Alkaline Treatment. Preprints2024, 2024101375. https://doi.org/10.20944/preprints202410.1375.v1
APA Style
Tonutti, L. G., Vergara, L., Querini, C. A., & Dalla Costa, B. O. (2024). On the Location and Accessibility of Active Acid Sites in MFI Zeolites Modified by Alkaline Treatment. Preprints. https://doi.org/10.20944/preprints202410.1375.v1
Chicago/Turabian Style
Tonutti, L. G., Carlos Alberto Querini and Bruno Oscar Dalla Costa. 2024 "On the Location and Accessibility of Active Acid Sites in MFI Zeolites Modified by Alkaline Treatment" Preprints. https://doi.org/10.20944/preprints202410.1375.v1
Abstract
An MFI zeolite (Si/Al = 40) was desilicated by alkaline treatment in order to generate mesopores. Temperature, alkali concentration and treatment duration were adjusted to maximize mesoporosity while preserving the zeolite structure. Special attention was paid to the characterization of the strength and accessibility of the acid sites. The catalysts were tested in the isobutane/butene alkylation, a reaction typically catalyzed by zeolites but limited by coke deposition. Additionally, glycerol esterification with acetic acid was used as test reaction, due to the requirement of large pores to take part. The results confirmed that mesopores were successfully generated in the MFI zeolite, and the diffusion through the solid was enhanced, but the active sites remained mainly confined in the micropores.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
