In order to analyze the catalytic performances of the nickel based catalyst to the methanation reaction of the synthetic gas,with the La2O3 modified high ratio superficial area γ-Al2O3 as the carrier,the isochoric immersion method was applied to prepare the methanation catalyst of the synthetic gas and investigate the pore structure properties,the reduction performances and the reaction performances of the nickel based catalyst.The results showed that the modified carrier could directly load the activated c...