Single-phase Co/Mn-MOF-74 solid materials were synthesized successfully via the hydrothermal method. The effect of Co/Mn atom ratio on the structure of Co/Mn-MOF-74 solids and their catalytic activity for low-temperature NH₃-SCR of NO_x were investigated. Very high NO conversion values (>96.0%) at 180–240 °C were obtained using the Mn_0.66Co_0.34-MOF-74 chemical composition (optimal content of Co). Furthermore, Mn_0.66Co_0.34-MOF-74 showed outstanding resistance to SO₂ poisoning and the incorporation of Co was shown to cause the weakening of the SO₂ adsorption strength on the catalyst surface, thus to enhance catalyst's SO₂ resistance to poisoning. These features were probed by in situ DRIFTS and catalytic performance studies. The present work suggests that Mn_0.66Co_0.34-MOF-74 could be likely considered as a prospective industrial NH₃-SCR NO_x control catalyst.

通过水热法成功合成了单相Co / Mn-MOF-74固体材料。研究了Co / Mn原子比对Co / Mn-MOF-74固体结构及​​其对NO _x的低温NH ₃ -SCR催化活性的影响。使用Mn _0.66 Co _0.34 -MOF-74的化学成分（Co的最佳含量）在180–240°C时可获得非常高的NO转化率（> 96.0％）。此外，Mn _0.66 Co _0.34 -MOF-74表现出出色的抗SO _2中毒性，并且表明Co的掺入会削弱SO ₂在催化剂表面的吸附强度，从而增强催化剂的SO ₂抵抗中毒。通过原位DRIFTS和催化性能研究探讨了这些特征。本研究表明，锰_0.66钴_0.34 -MOF-74可被容易视为潜在的工业NH ₃ -SCR NO _X控制催化剂。