Articles producció científica> Enginyeria Química

Microwave-assisted aldol condensation of furfural and acetone over Mg–Al hydrotalcite-based catalysts

  • Dades identificatives

    Identificador: imarina:8680206
    Autors:
    Tampieri ALilic MConstantí MMedina F
    Resum:
    © 2020 by the authors. Licensee MDPI, Basel, Switzerland. The depletion of fossil fuel resources has prompted the scientific community to find renewable alternatives for the production of energy and chemicals. The products of the aldol condensation between bio-based furfural and acetone have been individuated as promising intermediates for the preparation of biofuels and polymeric materials. We developed a protocol for the microwave-assisted condensation of these two compounds over hydrotalcite-based materials. Mg:Al 2:1 hydrotalcite was prepared by co-precipitation; the obtained solid was calcined to afford the corresponding mixed metal oxide, which was then rehydrated to obtain a meixnerite-type material. The prepared solids were characterized by PXRD, ICP-AES, TGA-DSC and N2 physisorption, and tested as catalysts in the aldol condensation of acetone and furfural in a microwave reactor. The performance of the catalysts was assessed and compared; the meixnerite catalyst proved to be the most active, followed by the mixed metal oxide and the as-synthesized hydrotalcite, which has often been reported to be inactive. In all cases, the reaction is quite fast and selective, which makes our protocol useful for rapidly converting furfural and acetone into their condensation products.
  • Altres:

    Autor segons l'article: Tampieri A; Lilic M; Constantí M; Medina F
    Departament: Enginyeria Química
    Autor/s de la URV: Constantí Garriga, Magdalena / Medina Cabello, Francisco / Tampieri, Alberto
    Paraules clau: Waste Rehydration Rehydrated hydrotalcite Performance Microwave-assisted organic synthesis Liquid alkanes Layered double hydroxide Heterogeneous basic catalysis Green chemistry Fuels Feedstocks Depletion Chemicals Biomass Biofuel production
    Resum: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. The depletion of fossil fuel resources has prompted the scientific community to find renewable alternatives for the production of energy and chemicals. The products of the aldol condensation between bio-based furfural and acetone have been individuated as promising intermediates for the preparation of biofuels and polymeric materials. We developed a protocol for the microwave-assisted condensation of these two compounds over hydrotalcite-based materials. Mg:Al 2:1 hydrotalcite was prepared by co-precipitation; the obtained solid was calcined to afford the corresponding mixed metal oxide, which was then rehydrated to obtain a meixnerite-type material. The prepared solids were characterized by PXRD, ICP-AES, TGA-DSC and N2 physisorption, and tested as catalysts in the aldol condensation of acetone and furfural in a microwave reactor. The performance of the catalysts was assessed and compared; the meixnerite catalyst proved to be the most active, followed by the mixed metal oxide and the as-synthesized hydrotalcite, which has often been reported to be inactive. In all cases, the reaction is quite fast and selective, which makes our protocol useful for rapidly converting furfural and acetone into their condensation products.
    Àrees temàtiques: Química Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Inorganic chemistry General materials science General chemical engineering Crystallography Condensed matter physics Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 20734352
    Adreça de correu electrònic de l'autor: francesc.medina@urv.cat magdalena.constanti@urv.cat alberto.tampieri@estudiants.urv.cat alberto.tampieri@estudiants.urv.cat
    Identificador de l'autor: 0000-0002-3111-1542 0000-0002-3547-4199
    Data d'alta del registre: 2023-02-23
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2073-4352/10/9/833
    Referència a l'article segons font original: Crystals. 10 (9): 1-13
    Referència de l'ítem segons les normes APA: Tampieri A; Lilic M; Constantí M; Medina F (2020). Microwave-assisted aldol condensation of furfural and acetone over Mg–Al hydrotalcite-based catalysts. Crystals, 10(9), 1-13. DOI: 10.3390/cryst10090833
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.3390/cryst10090833
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2020
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Chemical Engineering (Miscellaneous),Condensed Matter Physics,Crystallography,Inorganic Chemistry,Materials Science (Miscellaneous),Materials Science, Multidisciplinary
    Waste
    Rehydration
    Rehydrated hydrotalcite
    Performance
    Microwave-assisted organic synthesis
    Liquid alkanes
    Layered double hydroxide
    Heterogeneous basic catalysis
    Green chemistry
    Fuels
    Feedstocks
    Depletion
    Chemicals
    Biomass
    Biofuel production
    Química
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    Materiais
    Inorganic chemistry
    General materials science
    General chemical engineering
    Crystallography
    Condensed matter physics
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
    Biotecnología
    Astronomia / física
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