Recent Advances of Copper-Based Zeolite Catalysts with Low-Temperature activity for Selective Catalytic Reduction of NOX with Hydrocarbons
NOx, as the major atmospheric pollutant of the atmosphere, of the elimination has drawn wide attention of the public. Several technologies for eliminating NOx have been investigated by some researchers, and the selective catalytic reduction (SCR) of NOx with hydrocarbon is the efficacious denitrification technology. The studies suggested that the excellent catalytic performance at low temperature was obtained over the copper-based zeolite catalyst for HC-SCR. This review summarized the development of the copper-based zeolite catalysts for HC-SCR, and elaborated the synthesis methods, low-temperature catalytic performance and the reaction mechanism of the catalysts with different compositions and structures. The purpose of this review is to highlight: (1) the structure-activity relationship of the copper-based zeolite catalysts; (2) the main factors affecting low-temperature catalytic activity; (3) the HC-SCR reaction mechanism of the copper-based zeolite catalysts; and (4) the design strategies of the copper-based zeolite catalysts with excellent low-temperature catalytic activity for HC-SCR.