Carbon Coking‐Tolerant Perovskite Catalyst Nd 0.9 Mg 0.1 Fe 0.4 Ni 0.6 O ₃ for Efficient Methane Dry Reforming

Perovskite with high temperature stability and tunability is a very promising material for dry reforming of methane (DRM), but its poor resistance to carbon coking severely limits its application. To improve the performance of catalysts in resistance to carbon coking, a common strategy is to construct active alloy structures. Here, we designed a new perovskite‐type catalyst Nd 0.9 Mg 0.1 Fe 0.4 Ni 0.6 O 3 by screening lanthanides and alkaline earth metal at the A site of perovskite and controlling the iron–nickel ratio at the B site. This catalyst exhibited excellent activity and good stability in the DRM reaction. The optimized Nd 0.9 Mg 0.1 Fe 0.4 Ni 0.6 O 3 catalyst achieved conversions of CH 4 of 93.1% and CO 2 of 94.7% at 850°C without diluent gas, and exhibited stable activity for 100 h. The good performance of Nd 0.9 Mg 0.1 Fe 0.4 Ni 0.6 O 3 material can be attributed to the formation of exsolved Fe‐Ni alloy nanoparticles with a ratio of 1:1.