Abstract: Nanometer BaTiO₃ was prepared by a sol-gel method,Ni/BaTiO₃ catalyst with nanometer BaTiO₃ as support was prepared by an impregnation method, and it
was applied to the reaction of CO₂ reforming CH₄ to syngas. Under optimum parameters for preparation such as water volume for hydrolysis of 10mL, pH=4～5,
gel temperature 343K, calcination at 973K, BaTiO₃ ultrafine powders with spherical particles of 25～60nm in diameter were prepared. The Ni/BaTiO₃ catalyst makes
the conversion of CH₄ and CO₂ reach as high as 94.4% and 93.3% respectively under the reaction conditions:temperature,1073K; the GHSV, 12000mL/(h·g·cat).

Key words: nanometer, barium titanate, catalyst, reforming