Effect of Zr Modification on NH3-SCR Reaction Performance of Cu-Ce/SAPO-34 Catalysts

Molecular sieve catalysts containing transition metals have been attracting attention for their potential applications in various fields, including environmental and industrial catalysis. A Cu-Ce-Zr/SAPO-34 series of molecular were prepared by the impregnation method, effect Zr introduction on selective catalytic reduction NO Cu-Ce/SAPO-34 was explored. Through characterization methods, physical chemical properties analyzed, denitration mechanism catalyst discussed. This study found that total acid content sites surface decreased with Zr, leading to a decrease efficiency catalyst. At 350–400 °C, 4Cu-4Ce-4Zr/SAPO-34 over 80%, at 400–500 it 99%. Moreover, excessive metal could destroy its CHA structure analyzed reaction NH3-SCR Zr-modified polymetallic zeolites modification results. contributes understanding performance metals. Reliable conclusions obtained, which offer data support future research field NH3-SCR.