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Palladium Nanoparticles in Glycerol/Ionic Liquid/Carbon Dioxide Medium as Hydrogenation Catalysts

  • Identification data

    Identifier: imarina:9139067
    Authors:
    Garg GMasdeu-Bultó AMFarfán NOrdóñez-Hernández JGómez MMedina-González Y
    Abstract:
    © 2020 The Authors. Published by American Chemical Society. In this work, the influence of carbon dioxide on the synthesis of palladium nanoparticles (PdNPs) in glycerol/ionic liquid mixtures and their further applications in catalytic hydrogenations was studied. In the glycerol/choline tosylalaninate/CO2 medium, small and very well-dispersed metal nanoparticles were obtained (1.3 ± 0.3 nm), exhibiting a relative narrow size distribution. Palladium nanoparticles prepared in the presence of supercritical carbon dioxide (scCO2) showed higher catalytic reactivity in comparison with those prepared in its absence. In addition, we observed a beneficial effect of CO2 in the studied hydrogenations. With the aim of rationalizing this trend, measurements of viscosity of the solvent media were carried out by using fluorescent molecular rotors, allowing the determination of diffusion coefficients for the organic substrates and molecular hydrogen. This study evidenced that CO2 causes a decrease of the viscosity of the medium and an increase of the diffusion constants of reagents including H2; consequently, PdNPs in the glycerol/choline tosylalaninate/CO2 solvent showed enhanced catalytic activity. From both process engineering and environmental points of view, it is important to highlight the efficiency of the extraction of organic products from the catalytic glycerol/ionic liquid solution by scCO2.
  • Others:

    Author, as appears in the article.: Garg G; Masdeu-Bultó AM; Farfán N; Ordóñez-Hernández J; Gómez M; Medina-González Y
    Department: Química Física i Inorgànica
    e-ISSN: 2574-0970
    URV's Author/s: Masdeu Bultó, Anna Maria
    Project code: CTQ2016-75016-R
    Keywords: Scco extraction 2 Palladium nanoparticles Microviscosity Hydrogenation Fluorescent molecular rotors Diffusion Des Co 2
    Abstract: © 2020 The Authors. Published by American Chemical Society. In this work, the influence of carbon dioxide on the synthesis of palladium nanoparticles (PdNPs) in glycerol/ionic liquid mixtures and their further applications in catalytic hydrogenations was studied. In the glycerol/choline tosylalaninate/CO2 medium, small and very well-dispersed metal nanoparticles were obtained (1.3 ± 0.3 nm), exhibiting a relative narrow size distribution. Palladium nanoparticles prepared in the presence of supercritical carbon dioxide (scCO2) showed higher catalytic reactivity in comparison with those prepared in its absence. In addition, we observed a beneficial effect of CO2 in the studied hydrogenations. With the aim of rationalizing this trend, measurements of viscosity of the solvent media were carried out by using fluorescent molecular rotors, allowing the determination of diffusion coefficients for the organic substrates and molecular hydrogen. This study evidenced that CO2 causes a decrease of the viscosity of the medium and an increase of the diffusion constants of reagents including H2; consequently, PdNPs in the glycerol/choline tosylalaninate/CO2 solvent showed enhanced catalytic activity. From both process engineering and environmental points of view, it is important to highlight the efficiency of the extraction of organic products from the catalytic glycerol/ionic liquid solution by scCO2.
    Thematic Areas: Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: annamaria.masdeu@urv.cat
    Author identifier: 0000-0001-7938-3902
    Record's date: 2024-07-27
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://pubs.acs.org/doi/10.1021/acsanm.0c02706
    Funding program: PROGRAMA ESTATAL DE INVESTIGACIÓN, DESARROLLO E INNOVACIÓN ORIENTADA A LOS RETOS DE LA SOCIEDAD
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Acs Applied Nano Materials. 3 (12): 12240-12249
    APA: Garg G; Masdeu-Bultó AM; Farfán N; Ordóñez-Hernández J; Gómez M; Medina-González Y (2020). Palladium Nanoparticles in Glycerol/Ionic Liquid/Carbon Dioxide Medium as Hydrogenation Catalysts. Acs Applied Nano Materials, 3(12), 12240-12249. DOI: 10.1021/acsanm.0c02706
    Acronym: ECO2VALCAT
    Article's DOI: 10.1021/acsanm.0c02706
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2020
    Funding program action: VALORIZACION EFICIENTE DE CO2 A COMBUSTIBLES Y COMPUESTOS DE ALTO VALOR AÑADIDO MEDIANTE CATALISIS HOMOGENEA Y NANO-CATALISIS
    Publication Type: Journal Publications
  • Keywords:

    Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Nanoscience & Nanotechnology
    Scco extraction 2
    Palladium nanoparticles
    Microviscosity
    Hydrogenation
    Fluorescent molecular rotors
    Diffusion
    Des
    Co 2
    Nanoscience & nanotechnology
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    General materials science
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