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Accueil du site > LPCNO > Séminaires > 2017 > Molecular and nanoscale catalysts for selective dehydrogenation and hydrogenation reactions

Molecular and nanoscale catalysts for selective dehydrogenation and hydrogenation reactions

Date : 05/01/2017 à 14:00

Titre : Molecular and nanoscale catalysts for selective dehydrogenation and hydrogenation reactions

Intervenant : Martin Prechtl

Provenance : University of Cologne, Allemagne

Salle : Salle de séminaire - LPCNO

Résumé : Hydrogen Storage : Liquid organic hydrogen carriers (LOHC) offer a promising alternative to current energy storage technologies and limited fossil fuels.1 Our research focusses on hydrogen generation at low temperature in water using formaldehyde hydrate (FAH) and methanol as LOHC and we demonstrated the first room-temperature reforming processes for these LOHCs (left Figure).[1-3] These reactions are interesting for simultaneous H2 production and decontamination treatment of wastewater with formaldehyde impurities (patented),2 and both processes fundamentally important for tailoring artificial methylotrophic pathways within the C1-interconversion network where we want to add important missing pieces to this C1-puzzle.

Nanoscale Catalysis : In recent years, ionic liquids (ILs) have proven their versatility for many applications in both academic and industrial research, for example for the synthesis of metal(0) nanoparticles (M-NPs). We developed a conceptual approach where the IL act in these particular cases not only as solvent, stabilizing and protecting agent for the formed nanoparticles, but selected ions are suitable to act as very mild [4,5] reducing agents (right Figure). The M-NPs are evaluated in our lab for partial and selective hydrogenation reactions in multiphase systems.

[1] Nature Commun. 2014, 5, Article number : 3621.
[2] Angew. Chem. Int. Ed. 2015, 54, 10308-10312.
[3] Green Chem. 2016, 18, 1469-1474.
[4] Chem. Commun. 2016, 52, 9129-9132.
[5] Chem. Commun. 2014, 50, 2261-2264.