钛促进的钴钼耐硫变换催化剂性能的研究

A Study of Ti-Promoted Sulfur-Tolerant Co-Mo Catalyst for Water Gas Shift Reaction

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.

A series of sulfur-tolerant Co-Mo/MgO-Al2O3-TiO2 catalysts promoted by TiO were prepared by kneading method and characterized by temperature-programmed reduction, temperature-programmed sulfurization and in-situ infrared spectroscopy. The catalyst activity for water gas shift reaction was tested under atmosphere in an ordinary tubular reactor. The results indicate that TiO2 promotes the activity of Co-Mo/MgO-Al2O3-TiO2 catalyst and decreases the reducing and sulfurizing temperature by changing interaction between active composition and carrier. In-situ infra-red spectra show that TiO2 decreases the saturation level of active Mo and increases the coordinate capacity of active Mo with CO.