Effect of TiO2 Incorporated with Al2O3 on the Hydrodeoxygenation and Hydrodenitrogenation CoMo Sulfide Catalysts

The influence of TiO2 incorporation in Al2O3 support was investigated in the catalytic activity of hydrodeoxygenation (HDO) and hydrodenitrogenation (HDN) reactions. Alumina–titania supported CoMo sulfide catalysts (mole ratio 1:0, 1:0.25, 1:50, 1:0.75, and 0:1) were prepared by sol-gel method. The CoMo sulfide catalysts were characterized by BET, NH3-TPD, H2-TPR, XRD and TEM techniques. Guaiacol and quinoline were used as model compounds in HDO and HDN reactions, respectively. The liquid products were examined by GC-FID and GC-MS. The results suggest that TiO2 incorporated Al2O3 support obviously involves the catalytic activity on the HDO and HDN reactions. The role of the partial incorporation of TiO2 into Al2O3 was discussed.