Articles producció científica> Enginyeria Química

Bio-nanohybrid catalysts based on l-leucine immobilized in hydrotalcite and their activity in aldol reaction

  • Dades identificatives

    Identificador: PC:1464
    Handle: https://hdl.handle.net/20.500.11797/PC1464
    Autors:
    Dana-Georgiana CrivoiRonald-Alexander MirandaElisabetta FinocchioJordi LlorcaGianguido RamisJesús E. SueirasAnna M. SegarraFrancisco Medina
    Resum:
    Nanohybrid materials based on l-leucine (l-Leu) and hydrotalcites (HT) were prepared by the ion-exchange and reconstruction method, under mild synthesis conditions. The location, amount and the form of the immobilized l-Leu are affected not only by the time of synthesis, but also by temperature and ultrasound treatment. The XRD results demonstrate that the immobilization occurs in either a vertical or oblique orientation with respect to the HT layers. The catalytic activity of these materials was tested in the aldol addition reaction of cyclohexanone with different aromatic aldehydes, affording mainly the syn-diastereomer. Furthermore, the present study demonstrates that both diastereo- and enantioselectivity can be easily modulated by the appropriate combination of nanohybrid catalyst, solvent and reaction time.

  • Altres:

    Autor segons l'article: Dana-Georgiana Crivoi; Ronald-Alexander Miranda; Elisabetta Finocchio; Jordi Llorca; Gianguido Ramis; Jesús E. Sueiras; Anna M. Segarra; Francisco Medina
    Departament: Enginyeria Química
    Autor/s de la URV: CRIVOI ., DANA GEORGIANA; MIRANDA ACEVEDO, RONALD ALEXANDER; Elisabetta Finocchio; Jordi Llorca; Gianguido Ramis; SUEIRAS ROMERO, JESÚS EDUARDO; SEGARRA GONZALEZ, ANNA MARIA; MEDINA CABELLO, FRANCISCO
    Paraules clau: Nanohybrid materials l-Leucine Hydrotalcite
    Resum: Nanohybrid materials based on l-leucine (l-Leu) and hydrotalcites (HT) were prepared by the ion-exchange and reconstruction method, under mild synthesis conditions. The location, amount and the form of the immobilized l-Leu are affected not only by the time of synthesis, but also by temperature and ultrasound treatment. The XRD results demonstrate that the immobilization occurs in either a vertical or oblique orientation with respect to the HT layers. The catalytic activity of these materials was tested in the aldol addition reaction of cyclohexanone with different aromatic aldehydes, affording mainly the syn-diastereomer. Furthermore, the present study demonstrates that both diastereo- and enantioselectivity can be easily modulated by the appropriate combination of nanohybrid catalyst, solvent and reaction time.
    Grup de recerca: Catàlisi heterogènia
    Àrees temàtiques: Chemical engineering Ingeniería química Enginyeria química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0926-860X
    Identificador de l'autor: n/a; n/a; n/a; 0000-0002-7447-9582; 0000-0001-8510-4842; 0000-0002-4059-0506; 0000-0002-9550-541X; n/a
    Data d'alta del registre: 2016-05-02
    Pàgina final: 129
    Volum de revista: 519
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0926860X16301405?via%3Dihub
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1016/j.apcata.2016.03.018
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2016
    Pàgina inicial: 116
    Tipus de publicació: Article Artículo Article

  • Paraules clau:

    Catàlisi
    Materials nanoestructurats
    Nanohybrid materials
    l-Leucine
    Hydrotalcite
    Chemical engineering
    Ingeniería química
    Enginyeria química
    0926-860X

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