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2021-01-07

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cc-by-nc-nd (c) Elsevier B.V., 2021
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/173332

Assessment of ion-exchange resins as catalysts for the direct transformation of fructose into butyl levulinate

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https://doi.org/10.1016/j.apcata.2021.117988

Abstract

The transformation of fructose into butyl levulinate in aqueous 1-butanol (initial molar ratio 1-butanol/fructose 79, and butanol/water 1.19) has been studied in a discontinuous reactor at 80-120C and 2.0 MPa over 8 sulfonic polystyrene-DVB ion exchange resins as catalysts (catalyst loading 0.85-3.4%). Resins swell greatly in the reaction medium and the reaction takes place mainly in the swollen gel-phase. Swollen resins in water have been characterized by analysis of ISEC data, and spaces originated in the gel phase upon swelling are described in terms of zones of different polymer density. A relationship has been found between the morphology of swollen resins and ester production. Swollen resins with low polymer density show the highest butyl levulinate yield. Dowex 50Wx2 was the most effective because it creates the largest and widest spaces in the gel-phase when swelling. Consequently, it better accommodates the proton-transfer-reaction mechanisms

Subject

Resines de bescanvi iònic, Fructosa, Catàlisi

Subject (English)

Ion exchange resins, Fructose, Catalysis

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Articles publicats en revistes (Enginyeria Química i Química Analítica)

Citation

RAMÍREZ RANGEL, Eliana, et al. Assessment of ion-exchange resins as catalysts for the direct transformation of fructose into butyl levulinate. Applied Catalysis A-General. 2021. Vol. 612, num. 117988, pags. 1-17. ISSN 0926-860X. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/173332

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