Abstract:

The nitrogen content in coal-based crude oil is as high as 4500mg/L, and it is difficult to achieve the removal of nitrogen-containing compounds in coal-based crude oil by using petroleum-based NiMoS catalyst. In order to develop more targeted and efficient hydrodenitrogenation catalyst, the research developments of coal-based crude oil hydrodenitrogenation catalyst is reviewed. Firstly, the composition and characteristics of nitrogen-containing compounds in coal-based crude oil are introduced. Secondly, around the traditional sulfide and noble metal catalysts with high denitrification performance, the construction and regulation of the active phase and the role of the support in the catalyst are analyzed. Finally, the activities of the two catalysts are compared. The analysis shows that the activity of noble metal catalysts is higher than that of traditional sulfide catalysts. The addition of promoter metals to form alloys is beneficial to the improvement of its sulfur resistance and stability. Catalysts with a certain acidity and moderate interaction with active centers have better denitrification performance. The HDN catalyst which designed based on reaction process can increase the removal rate of nitrogen-containing compounds basically.

Key words: hydrogenation, C—N bond, metal sulfides, noble metals, catalyst, fuel

摘要：

煤基粗油中氮含量高达4500mg/L左右，采用石油系的NiMoS催化剂很难实现含氮芳香族化合物的脱除。为开发针对性更强、更高效的加氢脱氮催化剂，本文对煤基粗油加氢脱氮的催化剂研究动态进行了综述。首先介绍了煤基粗油中含氮芳香族化合物的组成及特点，接着围绕传统硫化物催化剂和脱氮性能较高的贵金属催化剂，从活性相的构筑与调控、载体在催化剂中的作用等方面进行了分析，最后比较了上述两种催化剂的催化性能。结果表明：贵金属催化剂活性高于传统硫化物催化剂；添加助金属形成合金可提高贵金属耐硫性与稳定性；采用具有一定酸性、与活性中心相互作用适中的载体的催化剂脱氮性能更佳。在综合分析已有文献和工作基础上，得出只有依据反应体系、特定反应过程来设计专一的加氢脱氮催化剂，才能从根本上提高含氮化合物的脱除率。

关键词: 加氢反应, 碳氮键, 金属硫化物, 贵金属, 催化剂, 燃料