Intraparticle diffusion model to determine the intrinsic kinetics of ethyl levulinate synthesis promoted by Amberlyst-15

Vincenzo Russo, Carmelina Rossano, Emiliano Salucci, Riccardo Tesser, Tapio Salmi, Martino Di Serio

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Levulinic acid and its esters are considered very versatile chemical compounds used for a wide range of derivatives. Traditionally ethyl levulinate is synthesized in batch reactors, using homogeneous catalysts (H2SO4, H3PO4). Several investigations were reported on solid acid catalysts, as zeolites, sulfated oxides, sulfonic ion-exchange resins. Amberlyst-15 showed high potentials: to design a continuous reactor, it is necessary to investigate the stability of the catalyst and the kinetics of the reaction. In the present work, we demonstrated that the resin is stable for more than 5 days. Kinetic and mass transfer phenomena were studied, evaluating the partition and take-up of the used resin when put in contact with reactants and products. Two different samples of Amberlyst-15 were used, characterized by different size, demonstrating that bigger particles lead to higher intraparticle diffusion limitations.
Original languageEnglish
Article number115974
JournalChemical Engineering Science
Volume228
DOIs
Publication statusPublished - 31 Dec 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Levulinic acid
  • Ethyl levulinate
  • Amberlyst-15
  • Modelling
  • Kinetics
  • Mass transfer

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