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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/55968

    Título
    Simultaneous formic acid production by hydrothermal CO2 reduction and biomass derivatives conversion in a continuous reactor
    Autor
    Anderez Fernández, MaríaAutoridad UVA
    Pérez, Eduardo
    Ferrero, Sergio
    Álvarez González, Celedonio ManuelAutoridad UVA Orcid
    Gumiel, Juan
    Martín Martínez, ÁngelAutoridad UVA Orcid
    Bermejo Roda, Maria DoloresAutoridad UVA Orcid
    Año del Documento
    2023
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Chemical Engineering Journal, 2023, vol. 453, part 1, 139741
    Abstract
    The reduction of CO2 to obtain formic acid in hydrothermal media can contribute to the reduction and valorization of CO2 emissions, but in order to apply it industrially, scalable continuous-flow reactors must be developed. In this work, a continuous flow reactor is developed that can process up to 1.2 L/h of bicarbonate solution. Glucose as model compound of the products of the hydrothermal decomposition of lignocellulosic biomass is used as reducing agent. Feed stream is suddenly heated at the inlet of the reactor by mixing it with a preheated water stream and instantaneously cooled after the reactor by decompression Joule-Thompson effect, allowing a precise control of the residence time and enabling to apply short residence times down to 1 s that are not feasible in batch reactors. Several operational parameters, as residence time, temperature and additives, were studied. Yields to formic acid up to 63 % were achieved at 300 °C with residence times lower than 1 min. In order to better understand the process, NaH13CO3 was used in selected experiments to check if the origin of formic acid was the reduction of bicarbonate or the hydrolysis of glucose It was found that almost 50 % of formic acid was produced due to the reduction of NaHCO3 after 10 min of reaction, a proportion significantly higher than that observed in batch experiments at similar reaction times. Furthermore, experiments performed without NaHCO3 or with other alkaline buffers demonstrate that NaHCO3 also promotes the transformation of glucose into formic acid, increasing the overall selectivity of the process and facilitating downstream processing.
    Palabras Clave
    Formic acid
    Ácido fórmico
    Biomass
    Biomasa
    Subcritical water
    Agua subcrítica
    ISSN
    1385-8947
    Revisión por pares
    SI
    DOI
    10.1016/j.cej.2022.139741
    Patrocinador
    Ministerio de Ciencia, Innovación y Universidades (project RTI2018-097456-B-I00)
    Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (project CLU-2019-04)
    Ministerio de Ciencia, Innovación y Universidades (project PGC2018-099470-B-I00)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S1385894722052202?via%3Dihub
    Propietario de los Derechos
    © 2022 The Authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/55968
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Collections
    • MIOMeT - Artículos de revista [35]
    • BioEcoUVa - Artículos de revista [187]
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