| Abstract: | A great deal of attention has been focused on discharge plasma as it can rapidly decompose N_2O without additives,which is not only a kind of greenhouse gas but also a kind of damages to the ozone layer.The thermal equilibrium plasma is chosen to combine with catalysts to decompose N_2O,and its characteristics are analyzed in the present paper.The results indicate that NO and NO_2 were formed besides N_2 and O_2 during N_2O decomposition when N_2O was treated merely by discharge plasma.Concentration of NO declined greatly when the discharge plasma was combined with catalysts.Results of Raman spectra analysis on CeO_2,Ce_(0.75)Zr_(0.25)O_2and Ce_(0.5)Zr_(0.5)O_2 imply that the products selectivity has been obviously improved in discharge plasma decomposing N_2O because of the existence of massive oxygen vacancies over the composite oxide catalysts. |
