Publicación: Cobalt oxide-Carbon nanocatalysts with highly enhanced catalytic performance for the green synthesis of nitrogen heterocycles through Friedländer condensation
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2019-03-19
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info:eu-repo/semantics/openAccess
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Royal Society of Chemistry
Resumen
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.
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Esta es la versión aceptada del artículo. La versión registrada fue publicada por primera vez en Dalton Trans., 2019,48, 5637-5648, está disponible en línea en el sitio web del editor:
https://doi.org/10.1039/C8DT04403A
This is the accepted version of the article. The copyrighted version was first published in Dalton Trans., 2019,48, 5637-5648, is available online on the publisher's website:
https://doi.org/10.1039/C8DT04403A
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Citación
Godino Ojer, M.; López-Peinado, A.J.; Maldonado Hódar, F.J.; Bailón García, E.; Pérez Mayoral, E. (2019) Cobalt oxide–carbon nanocatalysts with highly enhanced catalytic performance for the green synthesis of nitrogen heterocycles through the Friedländer condensation, Dalton Trans., 2019,48, 5637-5648. https://doi.org/10.1039/C8DT04403A
Centro
Facultad de Ciencias
Departamento
Química Inorgánica y Química Técnica