Articles producció científica> Química Física i Inorgànica

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

  • Dades identificatives

    Identificador: imarina:9231020
    Autors:
    Cardo, XavierSalagre, PilarCesteros, Yolanda
    Resum:
    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.
  • Altres:

    Autor segons l'article: Cardo, Xavier; Salagre, Pilar; Cesteros, Yolanda;
    Departament: Química Física i Inorgànica
    Autor/s de la URV: CARDÓ MORENO, XAVIER / Cesteros Fernández, Yolanda / Salagre Carnero, María Pilar
    Resum: 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.
    Àrees temàtiques: Engineering, chemical Engineering (miscellaneous) Engineering (all) Energy (miscellaneous) Energy (all) Chemical engineering (miscellaneous) Chemical engineering (all)
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: pilar.salagre@urv.cat yolanda.cesteros@urv.cat
    Identificador de l'autor: 0000-0003-3257-2022 0000-0002-5439-9358
    Data d'alta del registre: 2024-03-01
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2305-7084/3/1/30
    Referència a l'article segons font original: Chemengineering. 3 (1): 30-
    Referència 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 Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.3390/chemengineering3010030
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2019
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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