Abstract: The iron-based catalysts are prepared by the initial wet impregnation method.The denitration activity of catalysts with different loading amount and different carriers are investigated under different oxygen volume contents.The results show that the larger the loading amount of Fe2O3,the wider the adjustable range of O2 suitable for denitration environment.When the loading amount is 32wt.%,the NO conversion can reach 100% with the O2 content being 2.2vol.%.With the increase of Fe2O3 loading amount,the number of active sites increase gradually.When comparing the denitration activity of catalysts with different carriers,the catalyst using Al2O3 as carrier exhibits a wider activity range of O2.With the increase of Fe2O3 loading amount,the crystallinity increases,and the range of O2 volume content suitable for denitration environment is wider.It is presumed that the suitable O2 range may be related to the crystallinity of Fe2O3.It is found by NO-TPD that Al2O3 has stronger ability to adsorb NO and can promote denitration activity.
刘璐, 张强, 郭丽丽. FCC再生装置中不同氧体积分数下铁基催化剂的脱硝性能研究[J]. 现代化工, 2018, 38(3): 124-128.
LIU Lu, ZHANG Qiang, GUO Li-li. Study on denitration performance of iron-based catalysts under different oxygen volume content in FCC regenerator. Modern Chemical Industry, 2018, 38(3): 124-128.
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