Facile preparation of Fe-Y catalyst under water-free conditions for selective catalytic reduction of NO x by ammonia |
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Authors: | ZeKai Zhang BinHao Zhang HuaYan Liu YinFei Chen |
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Affiliation: | 1. Department of Industry Catalysis, Zhejiang University of Technology, Hangzhou, 310014, China
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Abstract: | 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, Fe x O y oligomers and a little amount of < 3 nm spherical Fe2O3 particles. Isolated Fe3+ ions are predominating among all the Fe-Y catalysts. The sum of isolated Fe3+ ions and Fe x O y oligomers took up more than 90% percent of total iron species on the Fe-Y till 10.0 wt% loading of Fe. |
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