Plasma-enhanced low temperature NH3-SCR of NOx over a Cu-Mn/SAPO-34 catalyst under oxygen-rich conditions

[Display omitted] •Plasma-enhanced NH3-SCR of NOx over Cu-Mn/SAPO-34 is achieved at low temperatures.•There is no NH3 slip and by-product formation in this process.•A maximum NOx removal of 80 % and 100 % N2 selectivity are achieved.•Intermediates formed from the plasma NO oxidation promote the SCR...

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Veröffentlicht in:	Applied catalysis. B, Environmental Environmental, 2021-06, Vol.286, p.119886, Article 119886
Hauptverfasser:	Jiang, Boqiong, Zhao, Shuang, Wang, Yaolin, Wenren, Yesheng, Zhu, Zuchao, Harding, Jonathan, Zhang, Xinglin, Tu, Xin, Zhang, Xuming
Format:	Artikel
Sprache:	eng
Schlagworte:	Ammonia Catalysts Chemical reduction Copper Cu-Mn/SAPO-34 Dielectric barrier discharge Diesel exhaust gases Infrared spectroscopy Low temperature Manganese NH3-Selective catalytic reduction Nitrogen dioxide Nitrogen oxides Oxidation Oxygen Plasma Plasma catalysis Reaction mechanism Reaction mechanisms Regeneration Selective catalytic reduction Selectivity Water vapor
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Zusammenfassung:	[Display omitted] •Plasma-enhanced NH3-SCR of NOx over Cu-Mn/SAPO-34 is achieved at low temperatures.•There is no NH3 slip and by-product formation in this process.•A maximum NOx removal of 80 % and 100 % N2 selectivity are achieved.•Intermediates formed from the plasma NO oxidation promote the SCR of NOx.•Enhanced E–R reactions on the catalyst surface contribute to the enhanced NOx removal. In this work, a dielectric barrier discharge (DBD) plasma-enhanced NH3-selective catalytic reduction (NH3-SCR) of NOx over a Cu-Mn/SAPO-34 catalyst at low temperatures (
ISSN:	0926-3373 1873-3883
DOI:	10.1016/j.apcatb.2021.119886