Crystal-Plane Effect of Ceria on the Activity of Au/CeO2 for Oxidative Steam Reforming of Methanol

Oxidative steam reforming of methanol (OSRM) reaction is intensively considered in hydrogen production by using Cu catalysts. Different shapes of ceria (CeO2) supports, which are single-crystalline and uniform nanorods, nanocubes and mixed-shape of cubic CeO2, were selectively prepared by a hydrothermal method at temperatures 120 °C, 160 °C and 180 °C, respectively. The CuO/CeO2 catalysts were prepared by depositionprecipitation method (DP). This research focused on the effect of ceria shape as a support for copper-based catalyst on the catalytic performance and a function of Cu loading in the OSRM reaction. The results show that CuO/CeO2 exhibit a higher activity the CeO2 support due to the strong interaction between CuO and ceria. Their activity and selectivity will be evaluated and the catalysts will be characterized by Scanning Electron Microscope (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) surface area measurement. *apanee.l@chula.ac.th