关键词: 渣油加氢, 钼/活性炭催化剂, 钼酸铵

Abstract: Residue hydroprocessing technology is a significant residue upgrading technology, and the development of catalysts with high performance is the core issue. In this paper, a novel activated carbon supported molybdenum-based catalyst (Mo/AC) for hydroprocessing of residue was prepared by the incipient wetness impregnation method using (NH4)6Mo7O24?4H2O as precursor. The effect of preparation conditions, including MoO3 loading, calcination temperature and pH value on catalytic activity was investigated. The catalyst was characterized by means of XRD, SEM, XPS, and the characterization results indicated that Mo atoms were monolayer-dispersed on the surface of activated carbon. Under the following conditions：impregnation time 4 h, calcination temperature 440 ℃, loading amount of MoO3 8%, the prepared Mo/AC catalyst achieved high levels of residue conversion (＞79%) and distillate yield (＞75%) and low coke yield (＜1.5%) .

Key words: residue hydroprocessing, carbon supported catalyst, (NH4)6Mo7O24?4H2O