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- W640468911 abstract "Niobium was selected and investigated as a potential promoter for wustite-based catalyst (WBC) for ammonia synthesis. Experiments on reduction performance, activity test and H2-TGA, in situ XRD as well as XPS were carried out to obtain the promotion effect and mechanism involved. Niobium as a promoter was confirmed to enhance the reduction of WBC significantly. This behavior is highly desired for industry in terms of catalyst regeneration and lesser pretreatment time for fabrication regardless the unimproved catalytic performance for Nb2O5-doped wustite-based catalyst (Nb-WBC). Possible reasons for these phenomena are discussed. It is suggested that Nb2O5 is not favorable for the segregation or formation of solid solutions on the catalyst surface, which are difficult to be reduced. However, it seems that niobium does not promote the growth of [2 1 1] plane, which is active for ammonia synthesis." @default.
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- W640468911 date "2015-10-01" @default.
- W640468911 modified "2023-09-23" @default.
- W640468911 title "Promotion of Nb2O5 on the wustite-based iron catalyst for ammonia synthesis" @default.
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- W640468911 doi "https://doi.org/10.1016/j.apsusc.2015.06.049" @default.
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