Synthesis of iron oxide nanoclusters and its catalytic oxidation for carbon monoxid

摘要

Iron oxides nanoclusters were synthesized using Pluronic P123 and edetic acid as coordination agents, and its catalytic oxidation of CO to CO2 with or without hydrogen were investigated. The crystalline pattern structure and morphology of iron oxide nanocluster was characterized by XRD and SEM, respectively. The result indicated that the crystalline of iron oxide and H2 promoting effect determined the CO catalytic oxidation activity. The γ -Fe2O3 showed less catalytic activity for CO oxidation without H2 and the highest CO conversion was 80% at 500 °C; but it displayed higher activity for CO in H2 stream and 100% CO conversion could be achieved at 220 °C.