Abstract:
Using FeCrAl with honeycomb structure as the substrate, Pt-Rh(Cu)/Ce
0.75Zr
0.25O
2/Al
2O
3 bimetallic structured catalyst was prepared, the morphology and hydrogen production performance of the catalyst were analyzed. The experimental device was built to evaluate the hydrogen production performance of the catalyst. Results show that the surface morphology of the prepared Pt-Rh/Ce
0.75Zr
0.25O
2/Al
2O
3/FeCrAl is uniform, without obvious color difference and plugging holes. There are numerous surface pores on the catalyst surface, showing a cobweb porous form, which is easy to realize catalyst loading. Thus, the catalyst has higher gas adsorption and reaction space. When the molar ratio of Pt to Cu is 1∶15, the highest activity in the fresh state of the prepared Pt-based catalysts can be obtained, which has a conversion rate of more than 75% for methanol and methane steam reforming reaction, and the hydrogen concentration is high. Compared with Pt-Cu catalyst, Pt-Rh catalyst has higher stability and lower agglomeration of active components. The prepared bimetallic catalyst can be applied to both methane and methanol dual fuels, and has good hydrogen selectivity.