CeO ₂ Nanorod‐Supported Ni–Co Catalysts for Stable and Efficient Dry Reforming of Methane

As an extremely promising process for converting methane (CH ₄ ) and carbon dioxide (CO ₂ ) to syngas, dry reforming of methane (DRM) has attracted considerable attention due to its wide industrial application. However, the performance of nickel‐based catalysts in DRM is seriously restricted by carbon deposition, sintering, and poor long‐term stability at high temperatures. Herein, CeO ₂ nanorods were employed as support for Ni–Co catalysts. The current work not only stabilized the metal phase but also enhanced the CO ₂ activation by the Ni–Co bimetallic system, therby effectively suppressed carbon deposition and enhancing both the thermal stability and catalytic performance. The 7Ni–Co/CeO ₂ nanorod catalyst displayed excellent catalytic performance in DRM, which exhibited 91.8% CO ₂ conversion and 90.2% CH ₄ conversion at 800˚C, and the H ₂ /CO ratio was 0.86 with stable conversion for a long time. Meanwhile, it also displayed remarkable long‐term stability in DRM. The 7Ni–Co/CeO ₂ nanorod catalyst still had less than a 1% decrease in conversion after a 450 min reaction, and the carbon deposition was almost ignored. This work reported the first investigation of CeO ₂ nanorods as support for Ni–Co catalysts, providing an effective approach for efficient and stable DRM in industrial application.