Enhancing the water resistance of Mn-MOF-74 by modification in low temperature NH3-SCR

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Abstract

In this study, Mn-MOF-74 was successfully synthesized and further modified via two paths for enhanced water resistance. The structure and morphology of the modified samples were investigated by a series of characterization methods. The results of selective catalytic reduction (SCR) performance tests showed that polyethylene oxide-polypropylene-polyethylene oxide (P123)-modified Mn-MOF-74 exhibited outstanding NO conversion of up to 92.1% in the presence of 5 vol.% water at 250◦ C, compared to 52% for Mn-MOF-74 under the same conditions. It was concluded that the water resistance of Mn-MOF-74 was significantly promoted after the introduction of P123 and that the unmodified P123-Mn-MOF-74 was proven to be a potential low-temperature SCR catalyst.

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Wang, S., Gao, Q., Dong, X., Wang, Q., Niu, Y., Chen, Y., & Jiang, H. (2019). Enhancing the water resistance of Mn-MOF-74 by modification in low temperature NH3-SCR. Catalysts, 9(12). https://doi.org/10.3390/catal9121004

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