| Summary: | Coking and metal sintering are limitations of large-scale applications of Ni/Al<sub>2</sub>O<sub>3</sub> catalysts in DRM reactions. In this review, several modification strategies to enhance the anti-deactivation property of Ni/Al<sub>2</sub>O<sub>3</sub> are proposed and discussed with the recently developed catalyst systems, including structure and morphology control, surface acidity/basicity, interfacial engineering and oxygen defects. In addition, the structure–performance relationship and deactivation/anti-deactivation mechanisms are illustrated in depth, followed by prospects for future work.
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