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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/58446

    Título
    Hydrothermal reduction of CO2 captured as NaHCO3 into formate with metal reductants and catalysts
    Autor
    Quintana Gómez, LauraAutoridad UVA
    Martínez Álvarez, Pablo
    Segovia Puras, José JuanAutoridad UVA Orcid
    Martín Martínez, Ángel
    Bermejo Roda, Maria DoloresAutoridad UVA Orcid
    Año del Documento
    2023
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Journal of CO2 Utilization Volume 68, 2023, 102369
    Abstract
    The hydrothermal reduction of CO2 captured in aqueous solutions using metal reductants is a promising novel approach that achieves high yields of conversion and high selectivity, but it presents the limitation of the high temperatures needed for the reaction to take place. In this work, experiments combining several reductant metals (Zn, Al and Fe), catalysts (Pd/C, Ni, Cu, Fe2O3 and Fe3O4) and temperatures (200, 250 and 300 ºC) were performed to optimize the process at milder temperatures. Using Al as reductant and Pd/C as catalyst, yields as high as 38 % were obtained at 200ºC, compared with the highest yield (57 %) observed at 250 ºC. Thus a significant temperature reduction can be achieved using a suitable combination of reductant and catalyst. Using this reaction system, Pd/C as catalyst and Al as reductant, an extensive set of experiments at different times and temperatures were performed in order to determine the kinetics of the process and correlate them to a mathematical model of the process. The model correctly reproduces the experimental data with average errors lower than 5.9 %. These results demonstrate the feasibility of lower the operating temperature while maintaining the performance, when using an adequate combination of catalyst and reductant.
    Palabras Clave
    Hydrothermal CO2 reduction
    Reducción de CO2 hidrotermal
    Kinetic model
    Modelo cinético
    ISSN
    2212-9820
    Revisión por pares
    SI
    DOI
    10.1016/j.jcou.2022.102369
    Patrocinador
    Ministerio de Ciencia, Innovación y Universidades (project RTI2018-097456-B-I00)
    Junta de Castilla y Leon - FEDER (program CLU-2019-04)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S2212982022004887?via%3Dihub
    Propietario de los Derechos
    © 2022 The Authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/58446
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Collections
    • BioEcoUVa - Artículos de revista [187]
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    Attribution-NonCommercial-NoDerivatives 4.0 InternacionalExcept where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional

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