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(<特集>第14回動力・エネルギー技術シンポジウム)

概要

論文の詳細を見る
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 liquid-hourly space velocity LHSV upon the ethanol conversion X_<C2H5OH> in the range of LHSV from 0.05 to 1.40h^<-1> at steam-to-carbon ratio S/C=3.0 and reaction temperature T=420, 470, 520K, and the effect of LHSV upon concentrations such as C_<H2>, C_<CO2>, C_<CO> and C_<CH4> at T=470K. 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 T for the ethanol steam reforming, from a viewpoint concerning X_<C2H5OH>. Furthermore, the obtained concentrations suggest that the dominant chemical reactions at LHSV<0.2h^<-1> are different from those at LHSV≥0.2h^<-1>.
2010-03-25