Highly-dispersed ultrafine Pt nanoparticles on microemulsion-mediated TiO2 for production of hydrogen and valuable chemicals via oxidative photo-dehydrogenation of glycerol
| Autor: | Elsje Alessandra Quadrelli, Valeriia Maslova, Stefania Albonetti, Andrea Fasolini, Pooja Gaval, Francesco Basile |
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| Přispěvatelé: | Maslova, Valeriia, Quadrelli, Elsje Alessandra, Gaval, Pooja, Fasolini, Andrea, Albonetti, Stefania, Basile, Francesco, IRCELYON-Ingéniérie, du matériau au réacteur (ING), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 (C2P2), Université de Lyon-Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), University of Bologna, Department of Industrial and Materials Chemistry, Faculty of Industrial Chemistry, Università degli Studi di Salerno (UNISA) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
02 engineering and technology 010501 environmental sciences 7. Clean energy 01 natural sciences Catalysis chemistry.chemical_compound Specific surface area Chemical Engineering (miscellaneous) Dehydrogenation Microemulsion Pt/TiO2 Oxidative photo-dehydrogenation Glycerol Hydrogen production Surface Organometallic chemistry (SOMC) reverse microemulsion Waste Management and Disposal Organometallic chemistry 0105 earth and related environmental sciences Hydrogen production Process Chemistry and Technology [CHIM.CATA]Chemical Sciences/Catalysis 021001 nanoscience & nanotechnology [SDE.ES]Environmental Sciences/Environmental and Society Pollution chemistry Chemical engineering 0210 nano-technology Selectivity Dispersion (chemistry) |
| Zdroj: | Journal of Environmental Chemical Engineering Journal of Environmental Chemical Engineering, Elsevier, 2021, 9 (2), ⟨10.1016/j.jece.2021.105070⟩ |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2021.105070⟩ |
| Popis: | International audience; The oxidative photo-dehydrogenation of glycerol to produce H2 and other valuable chemicals was studied using different materials. In particular, Pt nanoparticles were deposited on microemulsion-synthesized TiO2 via surface organometallic chemistry (SOMC) and compared with photocatalysts obtained using more conventional methods. Well-defined Pt(II) single-site titania-grafted were prepared reacting the surface hydroxyl groups of TiO2 nano-oxides with the organometallic Pt(COD)Me2 complex. Sample reduction under H2 generated ultrafine Pt nanoparticles well-dispersed on titania surface. Its performance under simulated solar light showed superior activity when compared to analogous Pt-containing catalysts prepared by other methods. Improved dispersion of Pt metal on titania surface was among the primary reasons of a better overall activity, providing relatively high rates of hydrogen productivity. Moreover, an increase of glyceraldehyde productivity in liquid phase was observed with the increase of Pt dispersion, demonstrating that the metal dispersion can strongly affect the selectivity of chemicals produced in the reaction. Comparison with state of the art shows that the present material exhibits excellent performance for a combined positive effect of the high specific surface area of titania prepared by microemulsion, giving access to the increased densities of active sites and the high dispersion of Pt nanoparticles given by the SOMC technique. |
| Databáze: | OpenAIRE |
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