Various non-precious metal (M = Co, Ni, Cu, and Ag) catalysts supported on high Zr-loaded SBA-15 were developed for lean NO reduction. Several properties such as mesoporous structure, high specific area, moderate surface acidity, homogenous dispersion of Zr and M species, and strong interaction between support and doped metals were investigated by various techniques. The NO reduction efficiency of the developed catalysts in the propene selective reduction of NO was in the order of Co-2.5-Zr-SBADP > Ni-2.5-Zr-SBADP > Cu-2.5-Zr-SBADP > Ag-2.5-Zr-SBADP in the temperature range of 250–450 °C. Amongst, Co-2.5-Zr-SBADP displayed 42%, 55% and 46% N₂ yield at 300, 350 and 400 °C, respectively, in the dry feed whereas a slight decrease was observed in the wet feed. The catalyst activity improved significantly when a higher ratio of hydrocarbon to NO ($\frac{\text{C}}{\text{N}}=8$) with the minimum fuel penalty (1%) was applied. The catalyst activity increased to 68% and 71% of NO conversion to N₂ at 350 and 400 °C, respectively, in the presence of water vapor. The catalyst showed excellent hydrothermal stability and durability during prolonged reaction so that 68% of N₂ yield was achieved in the extreme condition in the presence of 5.3 vol% of water vapor at 400 °Cfor 96 h.

开发了多种负载在高Zr负载的SBA-15上的非贵金属（M = Co，Ni，Cu和Ag）催化剂，以减少贫NO的产生。通过多种技术研究了介孔结构，高比表面积，适度的表面酸度，Zr和M物种的均匀分散以及载体与掺杂金属之间的强相互作用等几种性能。所开发的催化剂在丙烯的丙烯选择性还原中的NO还原效率依次为Co-2.5-Zr-SBADP> Ni-2.5-Zr-SBADP> Cu-2.5-Zr-SBADP> Ag-2.5-Zr- SBADP的温度范围为250–450°C。其中，Co-2.5-Zr-SBADP的N ₂含量为42％，55％和46％干饲料分别在300、350和400°C下收率，而湿饲料则略有下降。当碳氢化合物与NO的比例更高时，催化剂的活性显着提高。$\frac{\text{C}}{\text{ñ}}=8$）的最低燃油费（1％）。在水蒸气存在下，催化剂活性分别在350和400°C下分别增加到NO转化为N _2的68％和71％。该催化剂在延长的反应过程中显示出优异的水热稳定性和耐久性，因此在极端条件下，在5.3体积％的水蒸气存在下，于400°C持续96 h ，N ₂收率达到68％。