In this study, we developed a novel combination model for different types of catalysts, which could generate synergistic effects for the catalysts with different functions. A Mn₃CeO_x catalyst with good low-temperature activity and a Ce_0.1TiO_x catalyst with good medium and high temperature activities were selected to make the combination and show synergistic effects. The combination of Ce_0.1TiO_x–Mn₃CeO_x (with Ce_0.1TiO_x located at the upstream of Mn₃CeO_x) showed high NO_x conversions in the whole temperature range, together with relatively low N₂O formation, indicated the synergistic effects between the Ce_0.1TiO_x and Mn₃CeO_x catalysts. This combination model can be extended widely to various NH₃-SCR catalysts and therefore has universal significance.

在这项研究中，我们针对不同类型的催化剂开发了一种新颖的组合模型，该模型可以为具有不同功能的催化剂产生协同效应。选择具有良好低温活性的Mn ₃ CeO _x催化剂和具有良好的中高温活性的Ce _0.1 TiO _x催化剂进行组合，并表现出协同作用。Ce _0.1 TiO _x –Mn ₃ CeO _x的组合（其中Ce _0.1 TiO _x位于Mn ₃ CeO _x的上游）显示出较高的NO _x在整个温度范围内的转化率以及较低的N ₂ O生成量表明Ce _0.1 TiO _x和Mn ₃ CeO _x催化剂之间具有协同作用。该组合模型可以广泛地扩展到各种NH ₃ -SCR催化剂，因此具有普遍意义。