Articles producció científica> Enginyeria Química

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

  • Datos identificativos

    Identificador: PC:1464
    Autores:
    Dana-Georgiana CrivoiRonald-Alexander MirandaElisabetta FinocchioJordi LlorcaGianguido RamisJesús E. SueirasAnna M. SegarraFrancisco Medina
    Resumen:
    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.
  • Otros:

    Autor según el artículo: Dana-Georgiana Crivoi; Ronald-Alexander Miranda; Elisabetta Finocchio; Jordi Llorca; Gianguido Ramis; Jesús E. Sueiras; Anna M. Segarra; Francisco Medina
    Departamento: Enginyeria Química
    Autor/es 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
    Palabras clave: Nanohybrid materials l-Leucine Hydrotalcite
    Resumen: 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.
    Grupo de investigación: Catàlisi heterogènia
    Áreas temáticas: Chemical engineering Ingeniería química Enginyeria química
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0926-860X
    Identificador del 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
    Fecha de alta del registro: 2016-05-02
    Página final: 129
    Volumen de revista: 519
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0926860X16301405?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1016/j.apcata.2016.03.018
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Página inicial: 116
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

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