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Layered Double Hydroxides for the Catalytic Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLAs)

  • Datos identificativos

    Identificador: imarina:9231020
    Autores:
    Cardo, XavierSalagre, PilarCesteros, Yolanda
    Resumen:
    Several hydrotalcite-type compounds with different divalent (Mg2+, Ni2+, Cu2+, Zn2+) and trivalent (Al3+, Cr3+) cations and different ratio compositions were tested for the isomerization of linoleic acid in order to study their role on the obtention of specific conjugated linoleic acids (CLAs) with anticarcinogenic and nutritional properties. This is a complex reaction due to the high number of possible isomers of linoleic acid together with the significant competition of the isomerization reaction with other secondary undesired reactions. All catalysts showed very high conversions of linoleic acid, but condensation products were mainly obtained, especially for the hydrotalcite-type compounds with higher Mg/Al ratios due to their higher Brønsted basicity and for the catalysts with higher Ni2+ content or with the presence of Cu2+, Zn2+ in the layers because of the influence of the higher acidity of these cations on the Brønsted basicity of the hydroxides. The best results were achieved for the catalysts with Mg/Al ratio around 2.5–3, resulting in 29–38% of selectivity to the identified CLAs.
  • Otros:

    Autor según el artículo: Cardo, Xavier; Salagre, Pilar; Cesteros, Yolanda;
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: CARDÓ MORENO, XAVIER / Cesteros Fernández, Yolanda / Salagre Carnero, María Pilar
    Resumen: Several hydrotalcite-type compounds with different divalent (Mg2+, Ni2+, Cu2+, Zn2+) and trivalent (Al3+, Cr3+) cations and different ratio compositions were tested for the isomerization of linoleic acid in order to study their role on the obtention of specific conjugated linoleic acids (CLAs) with anticarcinogenic and nutritional properties. This is a complex reaction due to the high number of possible isomers of linoleic acid together with the significant competition of the isomerization reaction with other secondary undesired reactions. All catalysts showed very high conversions of linoleic acid, but condensation products were mainly obtained, especially for the hydrotalcite-type compounds with higher Mg/Al ratios due to their higher Brønsted basicity and for the catalysts with higher Ni2+ content or with the presence of Cu2+, Zn2+ in the layers because of the influence of the higher acidity of these cations on the Brønsted basicity of the hydroxides. The best results were achieved for the catalysts with Mg/Al ratio around 2.5–3, resulting in 29–38% of selectivity to the identified CLAs.
    Áreas temáticas: Engineering, chemical Engineering (miscellaneous) Engineering (all) Energy (miscellaneous) Energy (all) Chemical engineering (miscellaneous) Chemical engineering (all)
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: pilar.salagre@urv.cat yolanda.cesteros@urv.cat
    Identificador del autor: 0000-0003-3257-2022 0000-0002-5439-9358
    Fecha de alta del registro: 2024-03-01
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.mdpi.com/2305-7084/3/1/30
    Referencia al articulo segun fuente origial: Chemengineering. 3 (1): 30-
    Referencia de l'ítem segons les normes APA: Cardo, Xavier; Salagre, Pilar; Cesteros, Yolanda; (2019). Layered Double Hydroxides for the Catalytic Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLAs). Chemengineering, 3(1), 30-. DOI: 10.3390/chemengineering3010030
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.3390/chemengineering3010030
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2019
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Chemical Engineering (Miscellaneous),Energy (Miscellaneous),Engineering (Miscellaneous),Engineering, Chemical
    Engineering, chemical
    Engineering (miscellaneous)
    Engineering (all)
    Energy (miscellaneous)
    Energy (all)
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
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