Recursos de colección

Repositorio Institucional de la Universidad de Cordoba :: Spain (51.368 recursos)

El repositorio recoge todo tipo de materiales digitales: artículos de revistas, comunicaciones a congresos, tesis doctorales, documentos de trabajo, materiales docentes y objetos de aprendizaje, así como los productos digitales del patrimonio bibliográfico de la Universidad de Córdoba.

DQO-Artículos, capítulos...

Mostrando recursos 1 - 20 de 66

  1. Wheat bran valorisation: Towards photocatalytic nanomaterials for benzyl alcohol photo-oxidation

    Balu, Alina M.; Ouyang, Weiyi; Reina, Jose M.; Kuna, Ewelina; Yépez, Alfonso; Romero, Antonio A.; Colmenares, Juan C.; Luque, Rafael
    In this work, we have successfully synthesized a set of titania photocatalytic nanocomposites by the incorporation of different TiO2 content on wheat bran residues. The obtained catalysts were characterized by different techniques including UVeVis spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Transmission Electron Microscopy (TEM) while their photocatalytic activity was investigated in the oxidation of benzyl alcohol under UV light irradiation. Benzaldehyde yields were ca. 20%, with conversion in the systems of ca. 33% of benzyl alcohol by using 10%Ti-Bran catalyst, as compared to 33% yield to the target product (quantitative conversion of benzyl alcohol) using commercial pure TiO2 (P-25). The photocatalytic activity results indicate...

  2. Mild ultrasound-assisted synthesis of TiO2 supported on magnetic nanocomposites for selective photo-oxidation of benzyl alcohol

    Colmenares, Juan C.; Ouyang, Weiyi; Ojeda, Manuel; Kuna, Ewelina; Chernyayeva, Olga; Lisovytskiy, Dmytro; De, Sudipta; Balu, Alina M.; Luque, Rafael
    A simple and effective ultrasound-assisted wet impregnation method was developed for the preparation of magnetically separable TiO2/maghemite-silica photo-active nanocomposites. The resulting nanomaterials were characterized by several techniques and subsequently tested for their photocatalytic activities in the liquid phase selective oxidation of benzyl alcohol. An unprecedented selectivity in organic media (90% in acetonitrile) towards benzaldehyde was achieved at a benzyl alcohol conversion of ca. 50%, being remarkably superior in terms of activity to any other supported transition metal catalysts reported to date as well as commercial titania Evonik P-25 photocatalyst.

  3. Mild ultrasound-assisted synthesis of TiO2 supported on magnetic nanocomposites for selective photo-oxidation of benzyl alcohol

    Colmenares, Juan C.; Ouyang, Weiyi; Ojeda, Manuel; Kuna, Ewelina; Chernyayeva, Olga; Lisovytskiy, Dmytro; De, Sudipta; Balu, Alina M.; Luque, Rafael
    A simple and effective ultrasound-assisted wet impregnation method was developed for the preparation of magnetically separable TiO2/maghemite-silica photo-active nanocomposites. The resulting nanomaterials were characterized by several techniques and subsequently tested for their photocatalytic activities in the liquid phase selective oxidation of benzyl alcohol. An unprecedented selectivity in organic media (90% in acetonitrile) towards benzaldehyde was achieved at a benzyl alcohol conversion of ca. 50%, being remarkably superior in terms of activity to any other supported transition metal catalysts reported to date as well as commercial titania Evonik P-25 photocatalyst.

  4. A new Star(ch) is born: Starbons as biomass-derived mesoporous carbonaceous materials

    Budarin, V.; Shuttleworth, P.S.; Clark, James H.; Luque, Rafael
    Porous carbon materials are present in a wide range of technologically important applications, including separation science, heterogeneous catalyst supports, water purification filters, stationary phase materials, as well as the developing future areas of energy generation and storage applications. Hard template routes to ordered mesoporous carbons are well established, but whilst offering different mesoscopic textural phases, the surface of the material is difficult to chemically post-modify and processing is energy, resource and step intensive. The production of carbon materials from biomass (i.e. sugars or polysaccharides) is a relatively new but rapidly expanding research area. In this manuscript, we describe the preparation, properties and applications of a novel family of polysaccharide-derived mesoporous carbonaceous materials derived from renewable resources (namely...

  5. Degradación de 3-cloropiridina mediante fotocatálisis homogénea (Foto-Fenton)

    Sánchez-López, E.; Ortega, M. C.; Hidalgo, J.; Marinas, Alberto; Marinas, José María; Urbano Navarro, Francisco José; Boráu Bolós, Victoriano

  6. Degradación de 3-cloropiridina mediante fotocatálisis homogénea (Foto-Fenton)

    Sánchez-López, E.; Ortega, M. C.; Hidalgo, J.; Marinas, José María; Urbano Navarro, Francisco José; Boráu Bolós, Victoriano; Marinas, Alberto

  7. Transformaciones de biopolímeros en compuestos químicos de alto valor añadido utilizando nanopartículas soportadas de Cu sobre aluminosilicatos

    Yépez, Alfonso; Luque, Rafael; Romero, Antonio A.

  8. Síntesis de materiales magnéticos mesoporosos mediante molienda

    Ojeda, Manuel; Barrón, V.; Pineda, A.; Romero, Antonio A.; Balu, Alina M.; Luque, Rafael

  9. Estudio de las propiedades acidas y redox de sistemas catalíticos nanoestructurados a base de P, Fe y Al

    Navarro, R.; Luna, Diego; Marinas, José María; Bautista, F.M.

  10. Evaluación de la calidad de grafenos sintetizados por tecnología plasma

    Mora, Manuel; Gutiérrez, P.; Jiménez-Sanchidrián, César; Romero-Salguero, F.J.; Ruiz-Arrebola, J.R.

  11. Nanopartículas de oro en óxido de zirconio que minimizan los procesos desactivación en MPV

    Miñambres, Juan F.; Marinas, Alberto; Marinas, José María; Urbano Navarro, Francisco José

  12. Nanopartículas de oro en óxido de zirconio que minimizan los procesos desactivación en MPV

    Miñambres, Juan F.; Marinas, José María; Urbano Navarro, Francisco José; Marinas, Alberto

  13. Construction of chiral structures on the surface of mesoporous organosilicas

    López, M.I.; Esquivel, Dolores; Mora, Manuel; Carmona, M.A.; Ruiz-Arrebola, J.R.; Jiménez-Sanchidrián, César; Van der Voort, Pascal; Romero-Salguero, F.J.

  14. Obtención de un biocombustible que integra la glicerina empleando como catalizador heterogéneo KF soportado

    Cumplido, Gema; Luna, Diego; Sancho Puebla, Enrique; Luna, Carlos; Posadillo, Alejandro; Bautista, F.M.; Romero, Antonio A.; Verdugo-Escamilla, Cristóbal

  15. Estudio del soporte en catalizadores de platino para la hidrogenolisis de glicerol

    Checa Gómez, Manuel; Marinas, Alberto; Marinas, José María; Urbano Navarro, Francisco José

  16. Estudio del soporte en catalizadores de platino para la hidrogenolisis de glicerol

    Checa Gómez, Manuel; Marinas, José María; Urbano Navarro, Francisco José; Marinas, Alberto

  17. Evaluation of biomass-derived stabilising agents for colloidal silver nanoparticles via nanoparticle tracking analysis (NTA)

    Campos, Rafael; Lastres, Carmen; Ojeda, Manuel; Pineda, A.; Romero, Antonio A.; Yépez, Alfonso; Luque, Rafael

  18. Síntesis y caracterización de sistemas de vanadio soportado sobre fosfato de aluminio

    Blanco-Bonilla, F.; Luna, Diego; Marinas, José María; Bautista, F.M.

  19. Formación de enlaces C-C a través de la condensación de Knoevenagel catalizada por MgO.

    Álvarez, Lucrecia; Marinas, Alberto; Marinas, José María; Urbano Navarro, Francisco José

  20. Formación de enlaces C-C a través de la condensación de Knoevenagel catalizada por MgO.

    Álvarez, Lucrecia; Marinas, José María; Urbano Navarro, Francisco José; Marinas, Alberto

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.