Effect of Ce doping on denitrification performance of V-W-Ti catalyst
CexV1W7/Ti(x%refers to the CeO2 loading,based on the total mass of catalyst,the same below)was prepared by Ce doping of vanadium,tungsten and titanium(V-W-Ti)catalyst and characterized by XRD,N2 adsorption-desorption,SEM,XPS and FTIR.The adsorption strength distribution of NH3 and NO on the catalyst surface was characterized by NH3/NO-TPD.The influence of CeO2 loading on the denitrification performance of the catalyst was investigated,while the deactivation mechanism was analyzed by density functional theory calculation.The results showed that the CeO2 loading increased the chemisorbed oxygen ratio and Brønsted acid sites,but decreased the V4+ratio on the catalyst surface and which was the main reason for catalyst deactivation.
NETL
NSTL
万方数据
