关键词: 镍活性物种, 表面结构, 催化材料, 助剂修饰, 分散度

Abstract: Ni/Al2O3，as a type of stable catalyst，is used extensively in industrial catalysis，such as catalytic hydrogenation and catalytic reformation. In these catalytic processes，the surface structure often plays a vitally important role for catalytic performance. In this paper，the surface structure of Ni/Al2O3 catalyst and its corresponding preparation technologies in the recent years are expatiated. A review is provided for the type of surface Ni species，the modification of additives for the Ni/Al2O3 catalysts’ surface structure，and the effects of the size and the structure of the surface Ni species on the catalytic performance. Moreover，the effects of preparation conditions on the type of surface Ni species，the structure of additives，and the size and structure of active components are also summarized. The important roles of the three surface Ni species，electronic and structural promoter，dispersion and crystalline phases of the particles in the catalytic process are analyzed. The future research on catalyst shall be focused on the increase of monatomic activity，the decrease of transfer resistance and catalyst electronic modification.

Key words: Ni active species, surface structure, catalytic material, modification of additive, dispersion