Oxidehydrogenation of propane on MoO

The oxidative dehydrogenation of propane to propene has been studied on a MoO3/γAl2O3 catalyst as a function of temperature, and the results obtained are comparable to those reported in the literature on some vanadium based catalysts. Moreover, as the dehydrogenation reaction requires the abstraction of hydrogen species from the alkane, the hydrogen H* species content that the solid is able to store has been determined. Finally, according to the results obtained, a heterolytic dissociation of propane is proposed, on the active site : « O2- Mnn+ □ » (with □ : anionic vacancy) permitting the abstraction of a H- species and of a H+ species from the hydrocarbon, leading to the formation of the « OH- Mn+ H- » ensemble and of propene

Nano-oxyhydride catalysts for hydrogen production from bioethanol at room temperature

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Nano-oxyhydride catalysts for hydrogen production from bioethanol at room temperature

International audienc

Pt monometallic and bimetallic catalysts prepared by acid sol–gel method for liquid phase reforming of bioglycerol

International audienc

Deactivation study of the Pt and/or Ni-based γ-Al2O3 catalysts used in the aqueous phase reforming of glycerol for H2 production

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Room Temperature Hydrogen Production from Ethanol over CeNiXHZOY Nano-Oxyhydride Catalysts

ENERGIE:MATERIAUX+HJOCeNiXHZOY nano-oxyhydride catalysts were developed for the highly efficient sustainable hydrogen production from ethanol and water in the oxidative steam reforming reaction. After an insitu treatment in hydrogen in the temperature range of 200-300 degrees C, the cerium-nickel binary mixed oxides became hydrogen reservoirs, which were called oxyhydrides, in the presence of hydrogen species of the hydride nature in the anionic vacancies of mixed oxides. A novel technology was developed for the room temperature hydrogen production by using the chemical energy released from the reaction between CeNiXHZOY nano-oxyhydride catalysts and oxygen, which completely converted ethanol specifically at 60 degrees C (oven temperature) and simultaneously produced hydrogen, carbon dioxide, and carbon monoxide along with small amounts of methane and ethanal. CeNiXHZOY nano-oxyhydride catalysts demonstrated excellent catalytic stability, which was attributed to the graphitic filamentous carbon formed during the reaction. The unique activation phenomenon of the reaction (a huge variation in the temperature between the catalyst bed and the oven) was demonstrated in detail. Finally, the correlations among the catalyst properties, the catalytic performances, and the characterizations were thoroughly discussed