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MnOx-CuOx cordierite catalyst for selective catalytic oxidation of the NO at low temperature

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Abstract

Low-value solid waste cordierite honeycomb ceramics were used as carrier of SCO denitration catalyst, and the active component was supported by the impregnation method to improve the performance of the catalyst. Firstly, the effect of calcination conditions on the denitration performance of the Mn-loaded cordierite catalyst was studied for the cordierite-loaded active component MnOX. Secondly, the preferred catalyst was reloaded with another active component to further improve its denitration performance; the bimetal ratios were affected by the denitration performance, which was, finally, characterized by XRD, XPS, and SEM. The result shows the following: (1) Mn-loaded cordierite prepared at 450 °C for 3 h has a good denitration effect; (2) the MnOX-CuOX/CR catalyst is superior to MnOX-FeOX/CR, MnOX-CoOX/CR, and MnOX-CeOX/CR; (3) the MnO2 crystal form in the single metal-supported catalyst plays a major role, and Cu2Mn3O8 in the bimetallic catalyst affects the performance and activity of the catalyst.

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Funding

This research was funded by the National Natural Science Foundation of China [grant number 51704230 and 41907255]; Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources in P.R. China [grant number KF2019-7]; Shannxi Key Research and Development Project [grant number 2019ZDLSF05-05-01]; 2019 Shaanxi Provincial Natural Science Basic Research Program Enterprise Joint Fund Project [grant number 2019JL-01]; Natural Science Basic Research Plan in Shaanxi Province of China [grant number 2018JM5048]; and Xi’an Science and Technology Plan Project [grant number 2019217714GXRC013CG014-GXYD13.4].

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Conceptualization, Lei Zhang (F) and Zhang Lei(M); methodology, Shu Hao; software, Jia Yang; validation, Wang Yusu and Shu Hao; investigation, Zhang Lei(M); data curation, Shu Hao; writing-original draft preparation, Wang Yusu; writing-review & editing, Shu Hao.

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Correspondence to Zhang Lei.

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The authors declare that they have no conflict of interest.

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Lei, Z., Hao, S., Zhang, L. et al. MnOx-CuOx cordierite catalyst for selective catalytic oxidation of the NO at low temperature. Environ Sci Pollut Res 27, 23695–23706 (2020). https://doi.org/10.1007/s11356-020-08785-2

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  • DOI: https://doi.org/10.1007/s11356-020-08785-2

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