关键词: 加氢精制和加氢裂化催化剂, 金属-载体之间的相互作用, 煤焦油, 载体, 助剂, 活性金属

Abstract: This paper described the influences of the type and content of active metal and promoter in catalytic performances, and summarized the regulating mechanisms of active metal and promoter on the catalyst’s metal-carrier interaction, acids distribution and surface properties. To prepare a catalyst with good performance, two aspects should be considered, i.e. an excellent carrier with proper pores distribution and acids distribution, and a loaded active metal with high dispersion degree and outstanding reduction performance. We discussed the suitable hydrotreating catalyst for coal tar, mainly focusing on preventing catalyst poisoning, carbon deposit, and deactivation, as well as inactivating the hydrotreating catalysts synchronously in order to prolong the operation cycle of entire unit. The paper aims at providing some theoretical guidance for the research (design) of coal tar hydro-refining and hydrocracking catalysts so as to avoid the research and development blindness.

Key words: hydro-fining and hydro-cracking catalyst, metal-support interaction, coal tar, carrier, promoter, active metal