抄録
Oxidation activity of titanium dioxide on alumina can be improved by incoproration of vanadium and silver. TiO_2 nanoparticle catalyst was prepared by sol-gel technique on alumina beads. Vanadium and silver were loaded into the catalyst by coprecipitation and impregnation, respectively. The prepared TiO_2 catalysts were tested for methanol oxidation. The reactions were carried in a fixed bed reactor at 350℃ with W/F of 24.5 g_<cat>.g_<MeOH>^<-1>.hr^<-1>. Liquid products were periodically collected and analyzed by FID-GC while gas products were detected by online-TCD-GC. Incorporation of silver showed a significant improvement for oxidation activity, as compared to vanadium. For Ag-TiO_2 catalyst, impregnation technique provided a better activity than the coprecipitation. It was found that, 3% TiO_2 catalyst incorporated with 0.6%Ag is the most effective catalyst in this study.
