Abstract TiO2-SiO2 supports were prepared by various methods including precipitation, impregnation, hydrolysisreflux and sol–gel, and then cobalt was impregnated on those supports. The properties of various catalysts were characterized by N2 physisorption, XRD, XPS and TPR. The introduction of TiO2 led to stronger Co-support interaction, accompanying with the variation of dispersion and …