采用常压微反、程序升温还原(TPR)、程序升温硫化(TPS)及原位红外光谱(IR)等技术,对Co Mo Al2O3催化剂的表征研究发现:在Co Mo Al2O3催化剂中不仅存在着Co、Mo中心,而且存在由Co、Mo相互作用产生的中心,Co Mo Al2O3催化剂的催化性能是...采用常压微反、程序升温还原(TPR)、程序升温硫化(TPS)及原位红外光谱(IR)等技术,对Co Mo Al2O3催化剂的表征研究发现:在Co Mo Al2O3催化剂中不仅存在着Co、Mo中心,而且存在由Co、Mo相互作用产生的中心,Co Mo Al2O3催化剂的催化性能是由Co、Mo中心和Co、Mo相互作用产生的中心共同作用的结果。展开更多
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
文摘采用常压微反、程序升温还原(TPR)、程序升温硫化(TPS)及原位红外光谱(IR)等技术,对Co Mo Al2O3催化剂的表征研究发现:在Co Mo Al2O3催化剂中不仅存在着Co、Mo中心,而且存在由Co、Mo相互作用产生的中心,Co Mo Al2O3催化剂的催化性能是由Co、Mo中心和Co、Mo相互作用产生的中心共同作用的结果。
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.
