Journal ArticleDOI
Production of hydrogen for fuel cells by steam reforming of ethanol over supported noble metal catalysts
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In this article, the performance of supported noble metal catalysts for the steam reforming (SR) of ethanol has been investigated in the temperature range of 600-850°C with respect to the nature of the active metallic phase (Rh, Ru, Pt, Pd, Al2O3, MgO, TiO2).Abstract:
The catalytic performance of supported noble metal catalysts for the steam reforming (SR) of ethanol has been investigated in the temperature range of 600–850 °C with respect to the nature of the active metallic phase (Rh, Ru, Pt, Pd), the nature of the support (Al2O3, MgO, TiO2) and the metal loading (0–5 wt.%). It is found that for low-loaded catalysts, Rh is significantly more active and selective toward hydrogen formation compared to Ru, Pt and Pd, which show a similar behavior. The catalytic performance of Rh and, particularly, Ru is significantly improved with increasing metal loading, leading to higher ethanol conversions and hydrogen selectivities at given reaction temperatures. The catalytic activity and selectivity of high-loaded Ru catalysts is comparable to that of Rh and, therefore, ruthenium was further investigated as a less costly alternative. It was found that, under certain reaction conditions, the 5% Ru/Al2O3 catalyst is able to completely convert ethanol with selectivities toward hydrogen above 95%, the only byproduct being methane. Long-term tests conducted under severe conditions showed that the catalyst is acceptably stable and could be a good candidate for the production of hydrogen by steam reforming of ethanol for fuel cell applications.read more
Citations
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References
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Journal ArticleDOI
Production of hydrogen for fuel cells by reformation of biomass-derived ethanol
TL;DR: In this article, the authors investigated the influence of several parameters on the catalytic activity and selectivity, including reaction temperature, water-to-ethanol ratio and space velocity, on the Ni/La2O3 catalyst.
Journal ArticleDOI
Metal-catalysed steam reforming of ethanol in the production of hydrogen for fuel cell applications
TL;DR: In this article, a range of oxide-supported metal catalysts have been investigated for the steam reforming of ethanol/water mixtures for the production of hydrogen, and it was concluded that the support plays a significant role in the steam reformulation of ethanol.
Journal ArticleDOI
Bio-ethanol catalytic steam reforming over supported metal catalysts
TL;DR: In this paper, a new strategy for maximizing the hydrogen production and minimizing the CO formation is proposed, which is based on the unexpected observation that 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.
Journal ArticleDOI
Steam reforming of ethanol for hydrogen production : thermodynamic analysis
TL;DR: In this article, the feasibility of the steam reforming of ethanol has been re-examined under conditions conducive to carbon formation using a modified approach, and the results were compared with the previously published results of Garcia and Laborde.
Journal ArticleDOI
Hydrogen production by the steam reforming of ethanol: Thermodynamic analysis
E.Y. García,M.A. Laborde +1 more
TL;DR: The thermodynamic equilibrium involved in the steam reforming of ethanol to produce hydrogen has been examined over the following ranges: pressure 1-9 atm, temperature 400-800 K and water to ethanol feed ratio 0:1-10:1 as discussed by the authors.