Biosyngas and Derived Products from Gasification and Aqueous Phase Reforming

Basile, Francesco; Albonetti, Stefania; Cavani, Fabrizio; Lombardi, Erica; Mafessanti, Rodolfo

doi:10.1002/9783527698202.ch4

Cited by 1 publication

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“…Both steam reforming and aqueous phase reforming of glycerol lead to hydrogen production [6,7], but high energy consumption and operating costs are required due to the endothermic character of these processes. Heterogeneous photocatalysis can be thus regarded as an interesting alternative, energy saving way of glycerol valorization in the context of sustainability.…”

Section: Introductionmentioning

confidence: 99%

Highly-dispersed ultrafine Pt nanoparticles on microemulsion-mediated TiO2 for production of hydrogen and valuable chemicals via oxidative photo-dehydrogenation of glycerol

Maslova

Quadrelli

Gaval

et al. 2021

Journal of Environmental Chemical Engineering

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The oxidative photo-dehydrogenation of glycerol to produce H 2 and other valuable chemicals was studied using different materials. In particular, Pt nanoparticles were deposited on microemulsion-synthesized TiO 2 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 TiO 2 nano-oxides with the organometallic Pt(COD)Me 2 complex. Sample reduction under H 2 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 ma-terial 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.

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Section: Introductionmentioning

confidence: 99%