Abstract: Titanium dioxide (TiO₂) has low specific surface area as a CO₂ methanation catalyst support, which affects the dispersion of active components.TiO₂ was uniformly coated on the surface of silica (SiO₂) particles using an alcohol dispersion hydrolysis method.Nickel (Ni) was loaded onto the synthesized TiO₂-SiO₂ support with a high specific surface area using a complexation impregnation method that resulted in the Ni/TiO₂-SiO₂ catalyst.Effects of Ni loading and calcination temperature on the catalytic performance and microstructure were examined.The study reveals that Ni does not easily sinter during the reduction process due to the large specific surface area of the support, higher dispersion of Ni, and metal-support interaction that immobilizes the active components.The resulting 12%Ni/TiO₂-SiO₂ catalyst exhibits excellent activity, selectivity, and stability.Experimental results indicate that CO₂ conversion rate increases linearly with the surface area of Ni, which indicates that Ni dispersion is the decisive factor for activity.