Prof. Sébastien Royer (Université du Littoral Côte d’Opale, France)
Short bio
Sebastien Royer is professor at the Université du Littoral Côte d’Opale, France, since 2024, after being professor at Université de Lille in the UCCS Laboratory (2015-2024). He leads a research group working on the synthesis of heterogeneous catalysts, and develops researches in the fields of porous materials (mesostructured solids, zeolites, MOFs, carbons), oxides and mixed oxides, supported nanoparticles syntheses, with applications in green chemistry, energy and environment. The group also study small catalyst scale-up and shaping in view of industrial application. For more information on the recent activities: https://uccs.univ-lille.fr/index.php/en/heterogeneous-catalysis/matcat ; https://upcat.univ-lille.fr/en/
Keynote : Supported transition metal catalyst preparation; Uses in energy-related reactions
The talk proposed today introduces the preparation of supported catalysts, a major class of heterogeneous catalysts commonly encountered in the industry. Supported catalysts are composed of a porous support (several hundreds of square meter per gram of material), on which active elements are stabilized at its surface in the form of fine particles. Reaction thereafter occurs at the surface of these particles. Then, the dispersion of the active phase (that is the particle size of the active phase), and its accessibility to the reactants, conditions the activity of the catalyst and then the conversion/selectivities achieved. During the presentation, we will introduce some classical preparation procedures (wet impregnation, incipient wetness impregnation) and define the key properties of supported catalysts such obtained. Thereafter, alternative procedures of preparation (deposition precipitation, melt infiltration) will be presented and the properties obtained discussed. Finally, catalytic results obtained with supported transition metal for ammonia synthesis, CO2 methanation, CO2 reforming, biomass HDO will be presented, and the role of dispersion during reaction highlighted.
