以过渡金属、稀土金属、碱土金属、主族金属等为活性组分,REY、USY、ZSM-5、Hβ、4A、NaX、NaY以及SAPO-34等分子筛为载体,采用等体积浸渍法制备了负载型低温脱硝催化剂。通过XRD、BET、H₂-TPR等对催化剂理化性质进行表征,探究了其催化N₂O直接低温分解的性能。结果表明,负载Fe-Co双组分的Hβ分子筛催化性能最佳,相应负载量分别为12%和6%,最佳焙烧温度为430℃。Fe₁₂Co₆/Hβ具有较高的活性、热稳定性及良好的工业应用前景。

A supported low-temperature denitration catalyst is prepared through the incipient impregnation method,with transition metals,rare earth metals,alkaline earth metals and main group metals respectively as active components,and molecular sieves such as REY,USY,ZSM-5,4A,Hβ,NaX,NaY and SAPO-34 as carriers,respectively.The physical and chemical properties of the prepared catalysts are characterized by means of XRD,BET and H₂-TPR,and their catalytic performance for direct N₂O decomposition at low-temperature is also explored.Results show that Hβ molecular sieves loaded with Fe-Co as active components exhibit the best catalytic performance.The corresponding loading amount of Fe and Co is 12% and 6%,respectively.The optimum calcination temperature is 430℃.Fe₁₂Co₆/Hβ catalyst possesses high activity and thermal stability,implying a good industrial application prospect.

艾鑫(1997-),女,硕士生,研究方向为工业催化减排,1005529767@qq.com。