Shinoki T.,Dositisha University |
Ota K.,Dositisha University |
Sono Y.,Dositisha University |
Okuhigashi Y.,Dositisha University |
And 2 more authors.
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | Year: 2012
In the present studs, we reveal the dominant chemical reactions and the optimum conditions, supposing the design of ethanol steam-reforming reactors. Experiments are conducted for two types of catalysts; namely. Cu/ZmiO/Al 20 3 and Ru/AI 2O 3, Using a household-use-scale reactor with well-controlled temperature distributions, we compare experimental results with chemical-equilibrium theories. As a result, the Cu/ZnO/AI 2O 3 catalyst shows rather high performance at low reaction temperature T. This implies that the Cu/ZnO/Al 20 3 catalyst promotes the ethanol-steam-reforming and water-gas-shift reactions, but doesn't promote the methanation reaction. On tile oilier hand. such high-mtaction-tcmnperature-type catalysts as Ru/Al 20 3 promote all the three. Furthennore. we specify the effect of steam-carbon molar ratio S'( 'on the hydrogen concentration C H2 and the effect of T on C H2, for each catalyst. © 2012 The Japan Society of Mechanical Engineers.