2024/09/27 by Magdalena Jabłońska, Rujito S. R. Suharbiansah, Kinga Góra‐Marek +11
Materials Science · Chemistry · Chemical Engineering · #Catalytic Processes in Materials Science #Zeolite Catalysis and Synthesis #Catalysis and Oxidation Reactions
paper · pdf · doi:10.1021/acs.iecr.4c02245
High Resolution Image Download MS PowerPoint Slide Commercial zeolite Y with different n (Si)/ n (Al) ratios modified with copper cations were evaluated in the selective catalytic reduction of nitrogen oxide with ammonia (NH 3 -SCR-DeNO x ). Among the investigated catalysts, the highest activity was achieved over CuYCBV100 with 7.7 wt % of Cu. The activity of this sample was further confirmed in the feed of the tail gases stream from the pilot HNO 3 plant. The highest N 2 selectivity possesses CuYCBV500 (3.7 wt % of Cu). To improve catalytic properties, both zeolites were mixed before ion exchange with copper, as well as in a more effective approach, both Cu-containing catalysts were physically mixed (in different weight ratios, 1:1, 1:9, 3:7, 7:3). CuYCBV100 is more active due to the presence of more active sites, available in reduction/oxidation half-cycles.