Abstract
Dealing with nitric oxides (NOx) and particulate matter (PM) from diesel exhausted gas, four kinds of catalysts were prepared by introducing rare earth/transition metal oxides and precious metal to the support Al2O3 in this work. The physical and chemical properties of the catalysts were analyzed. The effects of different active components on the structure and activity of the catalysts were discussed. From the simultaneous catalytic removal of NOx and PM results, CuMnCe/Al2O3 exhibited the highest NOx reduction activity. However, after Pd loading, with the maintaining of the reduction activity, the catalyst presented enhanced PM oxidation activity. Besides that, PdCuMnCe/Al2O3 showed excellent cyclic performance. The monolithic Pd-based catalyst was prepared using cordierite as support. Even though there is a slight decrease in catalytic performance compared with PdCuMnCe/Al2O3, the monolithic catalyst presented high removal efficiency of NOx.
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Acknowledgements
This work was financially supported by the environmental protection research project in Jiangsu Province (No. 2019004) and the Jiangsu Transportation Science and Technology Project (No. 2020Y10).
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Cao, Y., Wang, X., Yin, C. et al. Preparation and performance of monolithic Pd-based catalyst for simultaneous removal of NOx and particulate matter. Reac Kinet Mech Cat 135, 3031–3044 (2022). https://doi.org/10.1007/s11144-022-02303-w
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DOI: https://doi.org/10.1007/s11144-022-02303-w