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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/75060

    Título
    Reduction of CO2 captured in basic solutions with biomass as reducing agent and metallic catalysts
    Autor
    Chinchilla Dueñas, Maira IvetteAutoridad UVA Orcid
    Martín Martínez, ÁngelAutoridad UVA Orcid
    McGregor, James
    Mato Chaín, Fidel AntonioAutoridad UVA Orcid
    Bermejo Roda, Maria DoloresAutoridad UVA Orcid
    Año del Documento
    2025
    Editorial
    Royal Society of Chemistry
    Descripción
    Producción Científica
    Documento Fuente
    RSC Sustainability, 2025, vol. 3, p. 822-835
    Resumen
    CO2 capture and utilization technologies can make an important contribution to the decarbonization of industry. However, capture processes entail significant economic and energy costs, mainly associated with the purification, compression and transport of CO2. These costs would be reduced if captured CO2 could be transformed in situ into useful products, avoiding purification, compression and transport costs. This work presents a hydrothermal process in which CO2 absorbed in aqueous solutions as bicarbonate is reduced with biomass waste to give formic acid as a joint product of the biomass and CO2 transformation, and acetic and lactic acids as byproducts from the decomposition of the biomass. Several biomass materials are applied as reductants: softwood, sugarcane bagasse, sugar beet, cork, pine needles, vermicompost and pure cellulose as reference material. Moreover, different catalysts are tested to improve conversion yield: Pd(5%)/C and Pd(10%)/C, Ru(5%)/C and activated carbon. The best results (18% formic acid yield) are obtained using pure cellulose as biomass and Pd(5%)/C catalyst. The next best results are obtained with the biomasses with the highest cellulose content, such as wood (11%) and sugarcane bagasse (9%). Experiments performed with labelled H13CO3− as carbon source at 300 °C using the Pd(5%)/C catalyst demonstrate that over 70% of the produced formic acid is formed from the inorganic bicarbonate carbon source. These high yields of conversion using renewable biomass as reductant can contribute to improve the technical and economic feasibility of CO2 capture technology.
    Materias Unesco
    3303 Ingeniería y Tecnología Químicas
    ISSN
    2753-8125
    Revisión por pares
    SI
    DOI
    10.1039/D4SU00440J
    Patrocinador
    Ministerio de Ciencia, Innovación y Universidades (PID2023-150529OB-I00)
    Junta de Castilla y León/FEDER (CLU-2019-04)
    Universidad de Valladolid y Banco Santander (contrato predoctoral)
    Fundación Naturgy (Premio Fundación Naturgy-CSIC a la investigación e innovación tecnológica en el ámbito energético)
    Version del Editor
    https://pubs.rsc.org/en/content/articlelanding/2025/su/d4su00440j
    Propietario de los Derechos
    © 2025 The Author(s)
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/75060
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP48 - Artículos de revista [265]
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    reduction-co2-captured-basic-solutions-biomass-reducing-agent-metallic-catalysts.pdf
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    Attribution-NonCommercial 3.0 UnportedLa licencia del ítem se describe como Attribution-NonCommercial 3.0 Unported

    Universidad de Valladolid

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