A series of CoxMn0.06/SiO2 catalysts were prepared by an impregnation method for catalytic hydrogenation of CO to Light Hydrocarbons(LHCs).The catalysts were characterized by XRD,SEM,N2 adsorption and NH3-TPD techniques.Catalyst activities were evaluated in a high-pressure micro reactor.The results show that the performance of the catalysts was significantly affected by the amount of Co loaded onto the substrate.The activity of the Co0.10Mn0.06/SiO2 catalyst was stable with time-on-stream.The CO conversion and LHCs selectivity were 95.3% and 98.1%,respectively,for this catalyst at 400 °C. A series of CoxMn0.06 / SiO2 catalysts were prepared by an impregnation method for catalytic hydrogenation of CO to Light Hydrocarbons (LHCs). The catalysts were characterized by XRD, SEM, N2 adsorption and NH3-TPD techniques. Catalyst activities were evaluated in a high-pressure micro reactor. The results show that the performance of the catalysts was significantly affected by the amount of Co loaded onto the substrate. Activity of the Co 0.10 Mn 0.06 / SiO 2 catalyst was stable with time-on-stream. CO conversion and LHCs selectivity were 95.3% and 98.1%, respectively, for this catalyst at 400 ° C.