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690741.pdf (857.24 KB)

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2019-06-15

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cc-by-nc-nd (c) Elsevier, 2019
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/137297

Liquid-phase synthesis of butyl levulinate with simultaneous water removal catalyzed by ion exchange resins

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Recurs relacionat

https://doi.org/10.1016/j.jiec.2019.06.011

Resum

The liquid-phase synthesis of butyl levulinate by esterification of levulinic with an excess of 1-butanol (initial molar ratio 1:3) and simultaneous water removal has been studied at atmospheric pressure and at the boiling point of the reacting medium. The catalytic performance of ten commercial sulfonic resins has been compared: four gel-type and six macroreticular. For both type of resins the levulinic acid conversion was complete after 4-6h and no byproducts derived from the acid were detected. Selectivity of 1-butanol towards the ester was about 95%, di-butyl ether and butenes being the detected 1-butanol-derived byproducts. Among the tested catalysts, gel-type resins with low crosslinking degree showed the highest activity, what could be attributed to a higher accessibility to active centers in polar medium. In additional experiments where initial reactants content was at stoichiometric relation, the levulinic acid conversion was lower (82-85%), while selectivity of 1-butanol towards the ester was slightly higher, because of the lower 1-butanol concentration.

Matèries

Alcohol butílic, Catàlisi, Resines de bescanvi iònic

Matèries (anglès)

Butanol, Catalysis, Ion exchange resins

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Col·leccions

Articles publicats en revistes (Enginyeria Química i Química Analítica)

Citació

IBORRA URIOS, Montserrat, TEJERO SALVADOR, Xavier, FITÉ PIQUER, Carles, RAMÍREZ RANGEL, Eliana, CUNILL GARCÍA, Fidel. Liquid-phase synthesis of butyl levulinate with simultaneous water removal catalyzed by ion exchange resins. _Journal of Industrial and Engineering Chemistry_. 2019. Vol. 78, núm. 222-231. [consulta: 4 de gener de 2026]. ISSN: 1226-086X. [Disponible a: https://hdl.handle.net/2445/137297]

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