Hydrogenation of benzene was carried out on the Raney-Nickel catalysts doped with various materials such as Cr, Cu, W, Ti and Mo. The highest yield of cyclohexane could be obtained when the hydrogen-benzene molar ratio was 18 at 200℃. The yield of cyclohexane was 40% on a pure Raney-Nickel catalyst, however, it increased up to 70% by doping with 1.5 wt% titanium or 3 wt% molybdenium.