Hydrotreating catalysts in various states including sulfided,passivated and oxidated,were characterized by techniques such as SEM,XRD,DTA,TGA,TPD and TPR.

• 利用SEM,XRD,DTA,TGA,TPD,TPR等对硫化态、氧化态和钝化态的催化剂进行表征,同时对催化剂孔结构、催化剂强度进行分析。