Traditional　Ni-based　catalysts　for　Dry　Reforming　of　Methane　(DRM)　suffer　from　poor　stability　due　to　carbon　deposition.　In　this　study,　we　developed　a　Ni/ZrO2　catalyst　prepared　by　using　a　sol–gel　method,　which　presents　strong　resistance　to　carbon　depositions.　Additionally,　the　metal　Ga　was　introduced　to　Ni/ZrO2,　which　effectively　enhanced　the　catalytic　activity　for　DRM　reaction　as　compared　to　the　Ni/ZrO2.　The　catalysts　were　characterized　by　various　techniques,　including　TPSR,　XRD,　TPR,　XPS,　TPD,　TG,　Raman,　and　EPR.　Characterization　results　revealed　that　the　addition　of　Ga　enhanced　the　metal-support　interaction,　promoting　the　activation　of　reactant　molecules　by　reducing　the　activation　energy　of　the　DRM　reaction.　Further　investigation　showed　that　because　of　the　introduction　of　metal　Ga,　a　large　number　of　oxygen　vacancies　were　fabricated,　significantly　increasing　the　CH4　conversion.　Stability　test　indicated　that　the　representative　NiGa/ZrO2　catalyst　exhibited　a　long-term　life　span　in　the　DRM　reaction　for　250　h,　without　catalyst　deactivation　due　to　the　slight　carbon　deposition　with　1.93　wt%.　©　2025