EFFECT OF ANTIMONY DOPING ON DENITRATION PERFORMANCE OF Mn-Ce/TiO2 CATALYST

Abstract

Abstract: A series of Sb doped Mn-Ce-Sb/TiO₂ catalysts was prepared by impregnation method. The effect of Sb/TiO₂ molar ratio on the denitration performance of the catalysts was investigated. The catalysts Mn-Ce/TiO₂ and Mn-Ce-Sb/TiO₂ (Sb/TiO₂ molar ratio 2∶10) were characterized by XRD, BET, NH₃-TPD and H₂-TPR, and the denitration performance, sulfur resistance and water resistance of the two catalysts were compared. The results showed that Sb doping was beneficial to the dispersion of active components on the support, to the interaction between active components and support and the low temperature redox reaction. In addition, Mn-Ce-Sb/TiO₂ (2∶10) catalyst has larger specific surface area, more surface acidic sites and excellent redox performance. Therefore, compared with Mn-Ce/TiO₂ catalyst, Mn-Ce-Sb/TiO₂ (2∶10) catalyst has better SCR activity of NO_X, better resistance to sulfur and water.

Key words: antimony doping, Mn-Ce/TiO₂catalyst, denitration, sulfur resistance, water resistance

References

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EFFECT OF ANTIMONY DOPING ON DENITRATION PERFORMANCE OF Mn-Ce/TiO₂ CATALYST

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