Reduction of N2O in the presence of Fe and its oxides with CO at programmed temperature
程序升温条件下铁及其氧化物在CO存在时对N2O的还原机理

Nitrous oxide(N2O) is a greenhouse gas. With the development of fluidized bed combustion, the emission of the N2O is generally observed. Chemical reactions between Fe and its oxides, N2O and CO were investigated with TG-FTIR. The oxides of iron were found to be relatively un-reactive to the destruction of N2O. The decomposition temperatures of N2O were 1000K and 920K in the presence of Fe with/without CO, and the conversions of N2O to N2O at 1123K were 95% and 80%, respectively. TG/DSC curves confirmed that the most of iron oxides produced by Fe N2O reaction could be reduced to metallic iron in the presence of CO. XRD pattern revealed that the N2O reacted with iron to yield Fe2O3 as the major product. ESM showed that very porous structure was formed when N2O reacted with Fe and CO. The results showed that Iron is a strong reducing agent for N2O reduction.