A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and water-free conditions.The dispersion,structure and morphology of the iron species on the Fe-Y catal...A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and water-free conditions.The dispersion,structure and morphology of the iron species on the Fe-Y catalysts were characterized by XRD,TEM and UV-Vis.The catalytic activities of Fe-Y samples were measured in selective catalytic reduction of NO with ammonia(NH3-SCR).The results showed that the iron species on the HY zeolite support were mainly made up of isolated Fe3+ions,Fex Oy oligomers and a little amount of<3 nm spherical Fe2O3particles.Isolated Fe3+ions are predominating among all the Fe-Y catalysts.The sum of isolated Fe3+ions and Fex Oy oligomers took up more than 90%percent of total iron species on the Fe-Y till 10.0 wt%loading of Fe.展开更多
基金support of the National Natural Science Foundation of China(20903080)
文摘A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and water-free conditions.The dispersion,structure and morphology of the iron species on the Fe-Y catalysts were characterized by XRD,TEM and UV-Vis.The catalytic activities of Fe-Y samples were measured in selective catalytic reduction of NO with ammonia(NH3-SCR).The results showed that the iron species on the HY zeolite support were mainly made up of isolated Fe3+ions,Fex Oy oligomers and a little amount of<3 nm spherical Fe2O3particles.Isolated Fe3+ions are predominating among all the Fe-Y catalysts.The sum of isolated Fe3+ions and Fex Oy oligomers took up more than 90%percent of total iron species on the Fe-Y till 10.0 wt%loading of Fe.
