Articles producció científica> Enginyeria Química

Insights into Palladium Deactivation during Advanced Oxidation Processes

  • Datos identificativos

    Identificador: imarina:9282894
    Handle: http://hdl.handle.net/20.500.11797/imarina9282894
  • Autores:

    Pinos-Vélez V
    Osegueda O
    Crivoi DG
    Llorca J
    García-García FJ
    Álvarez MG
    Medina F
    Dafinov A
  • Otros:

    Autor según el artículo: Pinos-Vélez V; Osegueda O; Crivoi DG; Llorca J; García-García FJ; Álvarez MG; Medina F; Dafinov A
    Departamento: Enginyeria Química
    Autor/es de la URV: Dafinov, Anton Ivanov / GARCÍA ALVAREZ, MAYRA / Medina Cabello, Francisco / OSEGUEDA CHICAS, ÓSCAR ANTONIO
    Palabras clave: X-ray-diffraction thermodynamics size pd nanoparticles nanocrystals hysteresis hydrogen-peroxide hydride formation decomposition absorption
    Resumen: A key step in creating efficient and long-lasting catalysts is understanding their deactivation mechanism(s). On this basis, the behavior of a series of Pd/corundum materials during several hydrogen adsorption/desorption cycles was studied using temperature-programmed desorption coupled with mass spectrometry and aberration-corrected transmission electron microscopy. The materials, prepared by impregnation and by sputtering, presented uniform well-dispersed Pd nanoparticles. In addition, single atoms and small clusters of Pd were only detected in the materials prepared by impregnation. Upon exposure to hydrogen, the Pd nanoparticles smaller than 2 nm and the single atoms did not present any change, while the larger ones presented a core-shell morphology, where the core was Pd and the shell was PdHx. The results suggest that the long-term activity of the materials prepared by impregnation can be attributed solely to the presence of small clusters and single atoms of Pd.
    Áreas temáticas: Química Medicina ii Materials science, multidisciplinary Materials science Materials chemistry Materiais Interdisciplinar Geociências General chemistry General chemical engineering Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas i Ciências ambientais Chemistry, physical Chemistry (miscellaneous) Chemistry (all) Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Biodiversidade Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: anton.dafinov@urv.cat francesc.medina@urv.cat
    Identificador del autor: 0000-0002-6124-3095 0000-0002-3111-1542
    Fecha de alta del registro: 2023-02-23
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://pubs.acs.org/doi/full/10.1021/acs.chemmater.2c01951
    Referencia al articulo segun fuente origial: Chemistry Of Materials. 34 (19): 8760-8768
    Referencia de l'ítem segons les normes APA: Pinos-Vélez V; Osegueda O; Crivoi DG; Llorca J; García-García FJ; Álvarez MG; Medina F; Dafinov A (2022). Insights into Palladium Deactivation during Advanced Oxidation Processes. Chemistry Of Materials, 34(19), 8760-8768. DOI: 10.1021/acs.chemmater.2c01951
    URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1021/acs.chemmater.2c01951
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2022
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Chemical Engineering (Miscellaneous),Chemistry (Miscellaneous),Chemistry, Physical,Materials Chemistry,Materials Science,Materials Science, Multidisciplinary
    X-ray-diffraction
    thermodynamics
    size
    pd nanoparticles
    nanocrystals
    hysteresis
    hydrogen-peroxide
    hydride formation
    decomposition
    absorption
    Química
    Medicina ii
    Materials science, multidisciplinary
    Materials science
    Materials chemistry
    Materiais
    Interdisciplinar
    Geociências
    General chemistry
    General chemical engineering
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas i
    Ciências ambientais
    Chemistry, physical
    Chemistry (miscellaneous)
    Chemistry (all)
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
    Biotecnología
    Biodiversidade
    Astronomia / física
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