Understanding the role of Al/Zr ratio in Zr-Al-Beta zeolite: Towards the one-pot production of GVL from glucose
dc.contributor.author | Paniagua, Marta | |
dc.contributor.author | Morales, Gabriel | |
dc.contributor.author | Melero, Juan Antonio | |
dc.contributor.author | Iglesias, Jose | |
dc.contributor.author | López-Aguado, Clara | |
dc.contributor.author | Vidal, Nora | |
dc.contributor.author | Mariscal, Rafael | |
dc.contributor.author | López-Granados, Manuel | |
dc.contributor.author | Martínez-Salazar, Irene | |
dc.date.accessioned | 2025-01-20T09:13:19Z | |
dc.date.available | 2025-01-20T09:13:19Z | |
dc.date.issued | 2021-04-07 | |
dc.description | The Spanish Ministry of Science, Innovation and Universities and the Regional Government of Madrid are kindly acknowledged for funding this research through the projects RTI2018-094918-B-C42, RTI2018-094918-B-C41, S2018/EMT-4344, and PEJD-2019-PRE_IND-15918. Clara López-Aguado acknowledges a FPI grant (BES-2015-072709) from the Government of Spain. | |
dc.description.abstract | The direct one-pot transformation of glucose into γ-valerolactone (GVL) can be accomplished by means of a cascade of reactions in which Brønsted acid-catalyzed transformations are combined with catalytic transfer hydrogenation (CTH) by using 2-propanol as sacrificial alcohol, avoiding the use of high-pressure hydrogen. Catalysts containing Zr Lewis acid sites have been successfully applied in CTH reactions while the acid-driven transformations can be preferentially promoted by Brønsted Al-related acidity. Here, we present the combination of Zr and Al as active sites within a BEA zeolite structure as catalyst, with the possibility of adjusting the Al/ Zr ratio from ∞ (commercial H-Beta) to 0 (aluminium-free Zr-Beta), which show a scale of Brønsted/Lewis acid sites ratios. The Al/Zr ratio has a strong impact on the products distribution. As the Zr content increases, higher amount of GVL is obtained, leading to a maximum over the catalyst with high amount of Zr and low content of Al acid sites (Al/Zr = 0.2). An increase of reaction temperature, as well as reaction time, allows an enhancement of yields towards the desired products, leading to a maximum yield towards GVL of 24 mol% over Zr-Al-Beta (2.0), and a maximum yield towards isopropyl lactate of 26 mol% over Zr-Beta at 190 ◦C. | |
dc.identifier.citation | Catalysis Today 367 (2021) 228–238. | |
dc.identifier.doi | https://doi.org/10.1016/j.cattod.2020.04.025 | |
dc.identifier.uri | https://hdl.handle.net/10115/59458 | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | en |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | Zirconium | |
dc.subject | Beta zeolite | |
dc.subject | Bifunctional catalyst | |
dc.subject | Cascade reaction | |
dc.subject | Gamma-valerolactone | |
dc.title | Understanding the role of Al/Zr ratio in Zr-Al-Beta zeolite: Towards the one-pot production of GVL from glucose | |
dc.type | Article |
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