Research on the performance of Cu(X)/SSZ-13 zeolite catalysts with different Cu contents for simultaneous elimination of soot and NOx
ZHOU Shengran
CHEN Xinyu
GAO Siyu
ZHANG Chunlei
YU Di
WANG Lanyi
YU Xuehua
ZHAO Zhen
Abstract：Diesel engines have been widely applied in heavy industries such as transportation,agricul-ture,and construction due to their advantages of strong power and durability.However,the pollutants emitted by diesel engines,including soot particles and nitrogen oxides(NOx),severely threaten peo-ple's health and environment.Therefore,the elimination of soot particles and NOx from diesel engine exhausts has become an important research topic.In this paper,Cu(X)/SSZ-13 zeolite catalysts with different Cu proportions(Cu(X)/SSZ-13)were synthesized by one-pot method by controlling the amount of CuSO4 added to the raw materials.The morphology and physicochemical properties of the prepared Cu(X)/SSZ-13 zeolite catalysts were studied using XRD,N2 adsorption-desorption,SEM,H2-TPR,NO-TPO,NH3-TPD,Soot-TPR and other characterization methods.The activities of as-prepared catalysts for simultaneous elimination of soot and NOx were tested.The results indicated that Cu(X)/SSZ-13 zeolite catalysts with different Cu contents exhibited significantly different activities in the simultaneous elimination of soot and NOx.Additionally,the Cu content could also cause changes in the morphology,specific surface area,and redox performance of Cu(X)/SSZ-13 zeolite catalysts.When the Cu proportion was 1.25,the prepared Cu(1.25)/SSZ-13 zeolite catalyst exhibited the best catalytic performance,with the temperature window of 153-427 ℃ for NO conversion greater than 90％,and the peak temperature of soot combustion(Tm)is 504 ℃.
Keywords：ZeoliteSimultaneous eliminationSoot particlesNOxCu/SSZ-13
Publication Date：2024-08-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 155-165 )