Here, we developed a new kind of hetero-structural catalyst through the homogeneous growth of Cu-ZSM-5 zeolite onto silicon carbide (SiC) monolith by using a one-pot hydrothermal method combined with an ion-exchange process in a rotary oven. The new catalyst formulation was tested towards NH₃-SCR, where the catalytic activity and stability of Cu-ZSM-5/SiC at T > 350 °C appear significantly higher than those obtained with Cu-ZSM-5 alone. In particular, the NO consumption rate of the former is 7.5 times larger on the average than that of the latter. This remarkable enhancement of catalytic activity is ascribed to the very good thermal conductivity of the SiC monolithic support. This research work could provide the means for the future design of more active and stable monolithic Cu-ZSM5-based catalytic systems with even lower Cu loading than the ones used in present de-NO_x applications.

在这里，我们通过使用一锅水热法结合离子交换工艺在旋转炉中将Cu-ZSM-5沸石均匀生长到碳化硅（SiC）整料上，开发了一种新型的异质结构催化剂。新的催化剂配方已针对NH ₃进行了测试-SCR，其中Cu-ZSM-5 / SiC在T> 350°C时的催化活性和稳定性似乎明显高于单独使用Cu-ZSM-5所获得的催化活性和稳定性。特别地，前者的NO消耗率平均是后者的7.5倍。催化活性的这种显着提高归因于SiC整体载体的非常好的导热性。这项研究工作可以提供更加积极，稳定的单片铜基-ZSM-5催化系统和更低的Cu负载比目前脱NO所使用的那些未来的设计手段_X应用程序。