Recent advances in copper-based zeolite catalysts with low-temperature activity for the selective catalytic reduction of NO with hydrocarbons

• Published in: New journal of chemistry 2020-01, Vol.44 (3), p.817-831
• Main Authors: Xu, Junqiang, Qin, Yahua, Wang, Honglin, Guo, Fang, Xie, Jiaqing
• Format: Article
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/c9nj04735b

NO x , as the main air pollutant in the atmosphere, its elimination has attracted wide attention. Several technologies for eliminating NO x have been investigated by some researchers, and the selective catalytic reduction (SCR) of NO x with hydrocarbons has been proven to be an efficacious denitrification technology. Studies have suggested that excellent catalytic performances at low temperatures can be obtained over copper-based zeolite catalysts for HC-SCR. This review summarized the development of copper-based zeolite catalysts for HC-SCR and elaborated the synthesis methods, low-temperature catalytic performance, and reaction mechanism of the catalysts with different compositions and structures. The purpose of this review is to highlight (1) the structure-activity relationship of copper-based zeolite catalysts; (2) the main factors affecting the low-temperature catalytic activity; (3) the HC-SCR reaction mechanism of the copper-based zeolite catalysts; and (4) the design strategies for the copper-based zeolite catalysts with excellent low-temperature catalytic activity for HC-SCR. This paper highlights the design strategies of the copper-based zeolite catalysts with excellent catalytic activity at low temperature for HC-SCR.