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Acid-Modified Clays for the Catalytic Obtention of 5-Hydroxymethylfurfural from Glucose

  • Identification data

    Identifier: imarina:9280942
    Authors:
    Sanchez, VladimirGonzalez, Maria DoloresSalagre, PilarCesteros, Yolanda
    Abstract:
    5-hydroxymethylfurfural (5-HMF) is an important platform molecule for the synthesis of high-added value products. Several synthesized clay materials, such as mesoporous hectorite and fluorohectorite, in addition to commercial montmorillonite K-10, have been acid modified by different methodologies to be applied as catalysts for the obtention of 5-HMF from glucose. The effects of the Bronsted and/or Lewis acidity, the reaction temperature and time, and the catalyst/glucose ratio on the conversion but especially on the selectivity to 5-HMF have been studied. By comparing the synthesized clays, the best selectivity to 5-HMF (36%) was obtained at 140 degrees C for 4 h with H-fluorohectorite because of the presence of strong Bronsted acid sites, although its conversion was the lowest (33%) due to its low amounts of Lewis acid sites. Different strategies, such as physical mixtures of montmorillonite K10, which contains high amounts of Lewis acid centers, with Amberlyst-15, which has high amounts of Bronsted acid sites, or the incorporation of rhenium compounds, were carried out. The best selectivity to 5-HMF (62%) was achieved with a mixture of 44 wt % Amberlyst-15 and 56 wt % of montmorillonite K10 for a 56% of conversion at 140 degrees C for 4 h. This proportion optimized the amount of Bronsted and Lewis acid sites in the catalyst under these reaction conditions.
  • Others:

    Author, as appears in the article.: Sanchez, Vladimir; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda;
    Department: Química Física i Inorgànica
    URV's Author/s: Cesteros Fernández, Yolanda / González Candela, Maria Dolores / Salagre Carnero, María Pilar / Sanchez Gonzaga, Vladimir Pablo
    Keywords: Lewis Isomerization Green Glucose Fructose Efficient Conversion Clays Brønsted Bronsted Acidity 5-hydroxymethylfurfural
    Abstract: 5-hydroxymethylfurfural (5-HMF) is an important platform molecule for the synthesis of high-added value products. Several synthesized clay materials, such as mesoporous hectorite and fluorohectorite, in addition to commercial montmorillonite K-10, have been acid modified by different methodologies to be applied as catalysts for the obtention of 5-HMF from glucose. The effects of the Bronsted and/or Lewis acidity, the reaction temperature and time, and the catalyst/glucose ratio on the conversion but especially on the selectivity to 5-HMF have been studied. By comparing the synthesized clays, the best selectivity to 5-HMF (36%) was obtained at 140 degrees C for 4 h with H-fluorohectorite because of the presence of strong Bronsted acid sites, although its conversion was the lowest (33%) due to its low amounts of Lewis acid sites. Different strategies, such as physical mixtures of montmorillonite K10, which contains high amounts of Lewis acid centers, with Amberlyst-15, which has high amounts of Bronsted acid sites, or the incorporation of rhenium compounds, were carried out. The best selectivity to 5-HMF (62%) was achieved with a mixture of 44 wt % Amberlyst-15 and 56 wt % of montmorillonite K10 for a 56% of conversion at 140 degrees C for 4 h. This proportion optimized the amount of Bronsted and Lewis acid sites in the catalyst under these reaction conditions.
    Thematic Areas: Engineering, chemical Engineering (miscellaneous) Engineering (all) Energy (miscellaneous) Energy (all) Chemical engineering (miscellaneous) Chemical engineering (all)
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: vladimir.sanchez@estudiants.urv.cat yolanda.cesteros@urv.cat
    Author identifier: 0000-0002-5439-9358
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/2305-7084/6/4/57
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Chemengineering. 6 (4):
    APA: Sanchez, Vladimir; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda; (2022). Acid-Modified Clays for the Catalytic Obtention of 5-Hydroxymethylfurfural from Glucose. Chemengineering, 6(4), -. DOI: 10.3390/chemengineering6040057
    Article's DOI: 10.3390/chemengineering6040057
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Chemical Engineering (Miscellaneous),Energy (Miscellaneous),Engineering (Miscellaneous),Engineering, Chemical
    Lewis
    Isomerization
    Green
    Glucose
    Fructose
    Efficient
    Conversion
    Clays
    Brønsted
    Bronsted
    Acidity
    5-hydroxymethylfurfural
    Engineering, chemical
    Engineering (miscellaneous)
    Engineering (all)
    Energy (miscellaneous)
    Energy (all)
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
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