Le vaporeformage catalytique : un vieux procédé pour une solution nouvelle...

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Bio-ethanol steam reforming on supported metal catalysts

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Bio-ethanol catalytic steam reforming over supported metal catalysts

SSCI-VIDE+CARE+CDSInternational audienceConsidering both the influence of the nature of the metal (Rh, Pt, Ni, Cu, Zn, Fe) and the role of the support (gamma-Al2O3, 12%CeO2-Al2O3, CeO2, Ce0.63Zr0.37O2), CO2 is presented as a primary product in the bio-ethanol steam-reforming catalytic reaction (SRR) over some supported metal catalysts. Based on this unexpected observation, a new strategy for maximizing the hydrogen production and minimizing the CO formation is proposed. Any highly selective catalytic formulation should be free of any promoter in the water gas shift reaction (WGSR) which tends to equilibrate the SRR gas towards higher CO concentrations. (C) 2002 Elsevier Science B.V. All rights reserved

H2 production from bio-ethanol via catalytic steam reforming

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Hydrogen production for fuel cells from the catalytic ethanol steam reforming

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Production d'hydrogène par vaporeformage de l'ethanol

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Hydrogen production for fuel cells from the catalytic ethanol steam reforming

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Catalytic steam reforming: Use for on-board hydrogen production from hydrocarbons or alcohols

SSCI-VIDE+CARE+CDSInternational audienceTo identify the challenges in the development of electrical vehicles, literature was rapidly reviewed. Research on hydrogen production processes suitable for fuel cell applications is a major challenge. Catalytic steam reforming of hydrocarbons as well as alcohol is a very promising route. The choice of ethanol and supported rhodium catalysts will be justified in the light of ethanol physico-chemical properties, reaction mechanism, cerium-based oxides characteristics and the specifications imposed by fuel cell applications

H2 production from bio-ethanol via catalytic steam reforming

SSCI-VIDE+CARE+CDSInternational audienceNon

Hydrogen production for fuel cells from the catalytic ethanol steam reforming

SSCI-VIDE+CARE+CDSInternational audienceAlumina-supported rhodium catalysts were shown to be active, selective and stable catalysts in the catalytic ethanol steam reforming when the reaction is carried out under pressure (1.1 MPa). Both the nature of the metal precursor salt, the metal loading and the reaction conditions were shown to influence the activity, the selectivity and the stability of the catalysts. Some trends observed when the reaction is carried out under moderate pressure were shown to be different from the conclusions drawn from earlier results obtained at atmospheric pressure. In fact, rhodium catalysts derived from a chlorinated metal precursor were shown to be the most active, selective and stable