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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/35111

    Título
    Hydrolysis of cellulose to glucose by supercritical water and silver mesoporous zeolite catalysts
    Autor
    Aspromonte, Soledad Guadalupe
    Romero, Alberto
    Boix, Alicia Viviana
    Alonso Sánchez, Gloria EstherAutoridad UVA Orcid
    Año del Documento
    2019
    Editorial
    Springer
    Documento Fuente
    Aspromonte, S.G., Romero, A., Boix, A.V. et al. Cellulose (2019) 26: 2471. https://doi.org/10.1007/s10570-018-2221-5
    Resumen
    The hydrolysis of cellulose into glucose is a critical step for the conversion of lignocellulosic biomass into fuels and chemical products. The combination of supercritical water hydrolysis in ultrafast reactors, with the subsequent hydrolysis of the cellooligosaccharides on silver-exchanged mesoporous mordenite zeolite, offers the possibility of a clear enhancement in the conversion of cellulose and in glucose formation. Complete dissolution of cellulose is achieved in the supercritical step and 81.8% of formed oligosaccharides are hydrolyzed in the catalytic step, with a yield into glucose of 77.0%. A fraction of Al is octahedrally coordinated, indicating a distribution of acid sites after the silver exchange. A deactivation of the catalyst between the first and third reaction cycle is observed, with a reduction in hydrolyzed carbon from 81.8% up to 45.6%. However, the selectivity to glucose only varies from 94.1 to 81.8%. Afterwards, the activity remains constant up to the fifth cycle. The presence of Ag(0) particles, together with the formation of coke, are responsible for the partial blockage of the pores of the support and loss of catalytic activity.
    Revisión por pares
    SI
    DOI
    10.1007/s10570-018-2221-5
    Patrocinador
    CTQ2015-64892-R (MINECO/FEDER)
    Version del Editor
    https://link.springer.com/article/10.1007/s10570-018-2221-5
    Idioma
    spa
    URI
    http://uvadoc.uva.es/handle/10324/35111
    Derechos
    openAccess
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    • BioEcoUVa - Artículos de revista [195]
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    Universidad de Valladolid

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