Yongliang Chen1,  Meiqing Yu1,2, Rui Wang This email address is being protected from spambots. You need JavaScript enabled to view it.1  

1 School of Environmental Science and Engineering, Shandong University, Jimo, Qingdao 266237, China
2 Undergraduate School, Shandong University, Jinan 250199, China


Received: August 14, 2021
Revised: September 10, 2021
Accepted: September 14, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.210201  

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Cite this article:

Chen, Y., Yu, M., Wang, R. (2021). Porous Zeolitic Imidazolate Framework Loaded Mn as an Efficient Catalyst for the Selective Catalytic Reduction of NOx with NH3. Aerosol Air Qual. Res. 21, 210201. https://doi.org/10.4209/aaqr.210201


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ABSTRACT


Zinc 2-methylimidazolate (Zn(Me-Im)2, ZIF-8) was synthesized through solvothermal method, and the [email protected] was synthesized by loading the Mn species onto the prepared ZIF-8 through impregnation. The effect of the addition amount of Mn species on the activity in selective catalytic reduction of NOx with NH3 (NH3-SCR), the stability of catalysts at ideal temperatures and the resistance to H2O and SO2 were investigated. Moreover, the characterizations of the catalysts including XRD, SEM, EDS, XPS, BET, TGA and H2-TPR were carried out. The results indicated that SCR activity of the catalysts was related to the addition amount of Mn species, the [email protected](0.8) showed the best NO conversion of over 90% ranging from 225°C–400°C with good stability in a long-time test. Besides, the [email protected] showed a high resistance to SO2. The ZIF-8 has a great potential to be an excellent support, and [email protected] is promising catalyst in SCR reaction.


Keywords: Nitrogen oxides, SCR, Zeolitic imidazolate framework, ZIF-8




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