Abstract
A series of MnOx/ACFN, Ce-MnOx/ACFN, and Fe-Ce-MnOx/ACFN catalysts on selective catalytic reduction (SCR) of NOx with NH3 at low-middle temperature had been successfully prepared through ultrasonic impregnation method, and the catalysts were characterized by SEM, XRD, BET, H2-TPR, NH3-TPD, XPS, and FT-IR spectroscopy, respectively. The results demonstrated that the 15 wt% Fe(1)-Ce(3)-MnOx(7)/ACFN catalyst achieved 90% NOx conversion (100~300 °C), good water resistance, and stability (175 °C). The excellent catalytic performance of the Fe(1)-Ce(3)-MnOx(7)/ACFN catalyst was mainly attributed to the interaction among Mn, Ce, and Fe. The doping of Fe promoted the dispersion of Ce and Mn and the formation of more Mn4+ and chemisorbed oxygen on the surface of a catalyst. This work laid a foundation for the successful application of active carbon fiber in the field of industrial denitrification, especially in the aspect of denitrification moving bed.
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Funding
This study was funded by the National Key R&D Program of China (2017YFC0210303-01), the National Natural Science Foundation of China (21806009), the project funded by the China Postdoctoral Science Foundation (2018M631344), the Fundamental Research Funds for the Central Universities (FRF-TP-18-019A1), and the program “Promoting the Cooperative Innovation Among Beijing, Tianjin, and Hebei” (Z161100002716025).
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Gu, T., Gao, F., Tang, X. et al. Fe-modified Ce-MnOx/ACFN catalysts for selective catalytic reduction of NOx by NH3 at low-middle temperature. Environ Sci Pollut Res 26, 27940–27952 (2019). https://doi.org/10.1007/s11356-019-05976-4
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DOI: https://doi.org/10.1007/s11356-019-05976-4