| 초록 |
Hydrogen energy, one of the next generation clean energy sources, has been studies so far. ESR, one of the methods, is a reaction that converts ethanol into hydrogen using a catalyst. The Pd-Zn bimetallic catalysts have been of interest in ESR. Generally, ZnO is unstable at high temperature(＞600°C). In order to overcome this problem, this study confined the ZnO component, as the main catalytic species, in a MgAl2O4 support spinel crystal. The Pd component, at 3.0 mol.% of the ZnO concentration, was added simultaneously to improve ethanol steam reforming. A Pd0.01Zn0.29Mg0.7Al2O4 catalyst, in which 0.01 mol of Pd and 0.29 mol of Zn had been simultaneously and stably inserted into the MgAl2O4 spinel structure, was assessed in the ethanol steam reforming reaction. The H2 production ability during ethanol steam reforming for 30 h at 450 °C decreased in the following order: Pd0.01Zn0.29Mg0.7Al2O4 ＞ Zn0.3Mg0.7Al2O4 ＞ MgAl2O4. Catalysts properties were analyzed by XRD, TPD, BET and etc. |
