A series of sulfur tolerant Co Mo/MgO Al 2O 3 TiO 2 catalysts promoted by TiO 2 were prepared by kneading method and characterized by temperature programmed reduction, temperature programmed sulfurization and in situ ...A series of sulfur tolerant Co Mo/MgO Al 2O 3 TiO 2 catalysts promoted by TiO 2 were prepared by kneading method and characterized by temperature programmed reduction, temperature programmed sulfurization and in situ infra red spectroscopy. The catalyst activity for water gas shift reaction was tested under atmosphere in an ordinary tubular reactor. The results indicate that TiO 2 promotes the activity of Co Mo/MgO Al 2O 3 TiO 2 catalyst and decreases the reducing and sulfurizing temperature by changing interaction between active composition and carrier. In situ infra red spectra show that TiO 2 decreases the saturation level of active Mo and increases the coordinate capacity of active Mo with CO.展开更多
文摘A series of sulfur tolerant Co Mo/MgO Al 2O 3 TiO 2 catalysts promoted by TiO 2 were prepared by kneading method and characterized by temperature programmed reduction, temperature programmed sulfurization and in situ infra red spectroscopy. The catalyst activity for water gas shift reaction was tested under atmosphere in an ordinary tubular reactor. The results indicate that TiO 2 promotes the activity of Co Mo/MgO Al 2O 3 TiO 2 catalyst and decreases the reducing and sulfurizing temperature by changing interaction between active composition and carrier. In situ infra red spectra show that TiO 2 decreases the saturation level of active Mo and increases the coordinate capacity of active Mo with CO.
