F115 銅亜鉛系触媒を用いたエタノール水蒸気改質法による水素製造(OS5 水素・燃料電池)

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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_<H2>, C_<CO2>, C_<CO> and C_<CH4>. 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_<C2H5OH>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_<H2>, C_<C02>, Cco and C_<CH4> at T= 470K.
一般社団法人日本機械学会の論文
2009-06-28