煤直接液化油喷气燃料馏分段中萘系烃类化合物通过加氢转化为饱和环烷烃可显著增强喷气燃料的热安定性，因煤直接液化油中硫的存在会抑制芳烃加氢，上述加氢过程实现的关键在于如何有效研制高选择性耐硫型芳烃加氢饱和催化剂。比照商业用金属硫化物催化剂尚不足以控制芳烃加氢饱和选择性的问题，项目以强化芳烃吸附扩散为目标导向，利用Ni2P特殊的晶体结构及Ni的缺电子特性和多级孔SiO2可强化传质效率的优势，通过控制磷化条件、水蒸气预处理方式及条件等方法调控催化剂制备过程中P的迁移路径，实现对Ni2P活性位与SiO2表面酸性位匹配的精准调控以强化芳烃吸附；通过实验研究结合原位测试表征手段分析多级孔SiO2孔道结构与Ni2P活性位交互作用机制，结合硫存在下芳烃加氢饱和反应活性和选择性变化规律，阐明多级孔Ni2P/SiO2催化剂组成、结构与加氢反应间构效关系，为煤直接液化油制喷气燃料的新型复合催化剂设计提供理论依据。

The thermal stability of jet fuel could be significantly improved by saturated cycloalkanes, which might be derived from the hydrogenation of naphthalene aromatics existing in the jet fuel fraction of direct coal liquefaction oil. However, the aromatics hydrogenation can be inhibited by sulfur, which inevitably existed in the direct coal liquefaction oil due to the complexity of coal structure. The key point for realizing this chemical process is to develop kind of sulfur resistant catalyst for aromatics hydrogenation saturation with high selectivity. The commercial metal sulfide catalyst was generally used in this process, but it was hard to control the selectivity of the aromatics hydrogenation saturation. In order to overcome this problem, in this project, we aim to enhance the adsorption and diffusion of aromatics. Considering the special crystal structure of Ni2P, the electron-deficiency characteristics of Ni, and the advantages of hierarchical SiO2 in enhancing mass transfer efficiency, The Ni2P/SiO2 catalysts are prepared by varying phosphating conditions, steam pretreatment methods and conditions etc. so that the migration pathway of P in this process can be precisely adjusted, and finally make the balance between Ni2P active site and acidic site of SiO2. Experimental analysis and in-situ characterization are used to explore the synergistic mechanism among the active sites of Ni2P and the pore structure of hierarchical SiO2. According to the above results and the activity and selectivity variation trend of aromatics hydrogenation saturation in the presence of sulfur, we could achieve the structure-activity relationship among the catalyst composition, structure and the hydrogenation performance of direct coal liquefaction oil. These studies will provide a theoretical support for designing a new composite catalyst to transform the direct coal liquefaction to jet fuel.