Articles producció científica> Química Física i Inorgànica

Supported PdZn nanoparticles for selective CO2 conversion, through the grafting of a heterobimetallic complex on CeZrOx

  • Datos identificativos

    Identificador: imarina:9247350
    Autores:
    Ruzzi PSalusso DBaravaglio MSzeto KCDe Mallmann AJiménez LGGodard CBenayad AMorandi SBordiga STaoufik M
    Resumen:
    Controlling the stoichiometry of supported bimetallic nanoparticles is essential in many catalytic reactions, notably selective CO2 hydrogenation. Thus, a new strategy to ensure the preferred stoichiometry (1:1) of supported bimetallic PdZn nanoparticles is presented, involving the deposition of a heterobimetallic precursor, [PdZn(μ-OOCMe)4]2 on a CeZrOx support. After calcination and reduction, the material contained mainly a PdZn alloy, as revealed by powder XRD and XAFS, and further supported by XPS, TEM-EDX, elemental analysis and in-situ IR at low temperature using CO as probe molecule. Moreover, a minor phase of oxidized Zn was determined by XAFS. This PdZn/CeZrOx reduced catalyst was combined with SAPO-34 to form a tandem catalytic system for CO2 conversion to hydrocarbons. This system could readily convert CO2 and H2 at high temperature (380 °C) into hydrocarbons with a conversion of 24% and high relative selectivity in light hydrocarbons (C2–C3: 82%) with virtually no deactivation of the catalyst after 16 h on stream. Controlled experiments were performed with Pd/CeZrOx and Zn/CeZrOx in order to gain supplementary insights on this system: Pd/CeZrOx gave only methane and Zn/CeZrOx gave mainly CO under the same conditions. The latter clearly shows that the control of the formation of PdZn phase has great impact for the selective production of hydrocarbons.
  • Otros:

    Autor según el artículo: Ruzzi P; Salusso D; Baravaglio M; Szeto KC; De Mallmann A; Jiménez LG; Godard C; Benayad A; Morandi S; Bordiga S; Taoufik M
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: Godard, Cyril
    Palabras clave: X-ray-absorption Surface organometallic chemistry Palladium Light alkanes In-situ ir Hydrocarbon production zn value-added products palladium methanol synthesis light alka n e s in-situ ir hydrogenation hydrocarbon production cu/zno/zro2 catalysts chemical-properties ceria carbon-dioxide adsorption
    Resumen: Controlling the stoichiometry of supported bimetallic nanoparticles is essential in many catalytic reactions, notably selective CO2 hydrogenation. Thus, a new strategy to ensure the preferred stoichiometry (1:1) of supported bimetallic PdZn nanoparticles is presented, involving the deposition of a heterobimetallic precursor, [PdZn(μ-OOCMe)4]2 on a CeZrOx support. After calcination and reduction, the material contained mainly a PdZn alloy, as revealed by powder XRD and XAFS, and further supported by XPS, TEM-EDX, elemental analysis and in-situ IR at low temperature using CO as probe molecule. Moreover, a minor phase of oxidized Zn was determined by XAFS. This PdZn/CeZrOx reduced catalyst was combined with SAPO-34 to form a tandem catalytic system for CO2 conversion to hydrocarbons. This system could readily convert CO2 and H2 at high temperature (380 °C) into hydrocarbons with a conversion of 24% and high relative selectivity in light hydrocarbons (C2–C3: 82%) with virtually no deactivation of the catalyst after 16 h on stream. Controlled experiments were performed with Pd/CeZrOx and Zn/CeZrOx in order to gain supplementary insights on this system: Pd/CeZrOx gave only methane and Zn/CeZrOx gave mainly CO under the same conditions. The latter clearly shows that the control of the formation of PdZn phase has great impact for the selective production of hydrocarbons.
    Áreas temáticas: Química Process chemistry and technology Medicina i Materiais Interdisciplinar Farmacia Environmental sciences Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, physical Catalysis Biotecnología Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: cyril.godard@urv.cat
    Identificador del autor: 0000-0001-5762-4904
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0926860X22000916
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Applied Catalysis A-General. 635
    Referencia de l'ítem segons les normes APA: Ruzzi P; Salusso D; Baravaglio M; Szeto KC; De Mallmann A; Jiménez LG; Godard C; Benayad A; Morandi S; Bordiga S; Taoufik M (2022). Supported PdZn nanoparticles for selective CO2 conversion, through the grafting of a heterobimetallic complex on CeZrOx. Applied Catalysis A-General, 635(), -. DOI: 10.1016/j.apcata.2022.118568
    DOI del artículo: 10.1016/j.apcata.2022.118568
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2022
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Catalysis,Chemistry, Physical,Environmental Sciences,Process Chemistry and Technology
    X-ray-absorption
    Surface organometallic chemistry
    Palladium
    Light alkanes
    In-situ ir
    Hydrocarbon production
    zn
    value-added products
    palladium
    methanol synthesis
    light alka n e s
    in-situ ir
    hydrogenation
    hydrocarbon production
    cu/zno/zro2 catalysts
    chemical-properties
    ceria
    carbon-dioxide
    adsorption
    Química
    Process chemistry and technology
    Medicina i
    Materiais
    Interdisciplinar
    Farmacia
    Environmental sciences
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Chemistry, physical
    Catalysis
    Biotecnología
    Astronomia / física
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