F115 Hydrogen production from Ethanol by Steam Reforming with Cu/ZnO/Al_2O_3

In the present study, we reveal the dominant chemical reactions and the optimum conditions, supposing the design of ethanol steam-reforming reactors. Experiments are conducted for Cu/ZnO/Al_2O_3 catalyst. Using a household-use-scale reactor with well-controlled temperature distributions, we specify the effect of T upon concentrations such as C_

, C_, C_ and C_. Furthermore, we compare experimental results with chemical-equilibrium theories. As a result, the Cu/ZnO/Al_2O_3 catalyst shows rather high performance at low values of reaction temperature T. This suggests that the Cu/ZnO/Al_2O_3 catalyst promotes the ethanol-steam-reforming and water-gas-shift reactions, but doesn't promote the methanation reaction. In addition, we have revealed the influence of liquid-hourly space velocity LHSV upon the ethanol conversion X_at in the range of LHSV from 0.05 to 1.40h^<-1>, at S/C = 3.0 and T= 420K, 470K and 520K, together with the influence of LHSVupon C_

, C_, Cco and C_ at T= 470K.