Hydrogen Production via Catalytic Gasification of Ethanol. A Mechanism Proposal over Copper-Nickel Catalysts

MARIÑO, F.; BARONETTI, G.; LABORDE, M

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Elsevier

Lugar: Amsterdam; Año: 2004 vol. 29 p. 67 - 71

0360-3199

Ethanol gasification using Cu/Ni/K/gamma-Al2O3 catalysts was studied. The reaction was carried out at a low temperature (300°C) and atmospheric pressure. The influence of the diffusional effects, the residence time and the water/ethanol molar ratio in the feed on the ethanol conversion and on the product distribution was analysed. Additional experiments were performed with monometallic catalysts, such as Cu/K/gamma-Al2O3 and Ni/K/gamma-Al2O3 catalysts. Ethanol gasification is favoured by a diminution of the diffusional resistances, high residence time and low water to ethanol feed ratio. A probable reaction mechanism is postulated, which is consistent with the experimental results and let identify the function of each metal (copper and nickel).