Persona:
Pérez Mayoral, María Elena

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ORCID
0000-0003-4554-141X
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Pérez Mayoral
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María Elena
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2014 - 20192
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Ajustes

Autor: López Peinado, Antonio José × Fecha de finalización: 2019 ×

Resultados de la búsqueda

Mostrando 1 - 2 de 2
  • Miniatura
    Publicación
    Cobalt oxide-Carbon nanocatalysts with highly enhanced catalytic performance for the green synthesis of nitrogen heterocycles through Friedländer condensation
    (Royal Society of Chemistry, 2019-03-19) Godino Ojer, Marina; López Peinado, Antonio José; Maldonado Hódar, Francisco J.; Bailón García, Esther; Pérez Mayoral, María Elena
    A novel series of eco-sustainable catalysts developed by supporting CoO nanoparticles on different carbon supports, highly efficient in the synthesis of quinolines and naphthyridines, through the Friedländer condensation, are reported for the first time. Textural properties, dispersion and location of the Co-phase are influenced by the nature of the carbon support, Co-precursor salt and metal loading, having a significant impact on the catalytic performance. Thus, the presence of the mesopores and macropores in carbon aerogels together with the homogeneous distribution of the active phase favours the formation of product 3a as a function of the metal loading. However, an increase in the metal content when using CNTs indicates the formation of CoO aggregates and an optimal concentration of 3 wt% CoO was observed, providing the highest conversion values. The carbon-based catalysts herein reported can be considered to be a sustainable alternative having advantages such as easy preparation, superior stability and notably enhanced catalytic performance, operating at lower temperature and under solvent-free conditions.
  • Miniatura
    Publicación
    Eco-friendly catalytic systems based on MgO- Supporting carbon materials for the Friedländer condensation
    (Wiley, 2014-12) Godino Ojer, Marina; López Peinado, Antonio José; Przepiórski, J.; Pérez Mayoral, María Elena; Soriano, E.; Martín Aranda, Rosa María
    Carbon-supported MgO materials are excellent and sustainable catalysts for the synthesis of N-containing heterocyclic compounds by the Friedländer condensation under mild, solvent-free conditions. The results reported herein indicate that MgO is the most active catalytic species that accelerates the reaction compared with the catalytic behavior observed for the carbon material Norit RX3. On the basis of DFT calculations, a reaction mechanism that involves dual activation of the reacting structures by the catalyst is proposed. Oxide, outside: MgO supported on carbon is able to catalyze the synthesis of interesting N-containing heterocyclic compounds efficiently under mild conditions. MgO on the carbon surface is responsible for the catalytic behavior. These carbon materials are environmentally friendly catalysts for the Friedländer reaction.