新型磷化镍催化剂的HDN性能研究

Study on HDN properties of new nickel phosphide catalysts

采用原位还原技术制备TiO2-Al2O3复合载体负载活性组分Ni2P催化剂,以喹啉为模型化合物对催化剂的加氢脱氮性能进行评价。主要考察复合载体中不同钛铝配比、不同Ni/P摩尔比及活性组分Ni2P负载量、不同模板剂用量对催化剂活性的影响,确定制备复合载体最佳钛铝比n(Ti)/n(Al)=1/4;模板剂和钛酸四正丁酯最优摩尔比为0.2;在压力为3 MPa,体积空速为3 h-1,氢油体积比为500,反应温度为360℃的条件下,催化剂的加氢脱氮活性最高,可达98%。

Using in situ reduction technique prepared TiO2-Al2O3 composite carrier,active component Ni2 P catalyst,model compounds on HDN was evaluated with quinoline. The main effects of different titanium aluminum composite carrier ratio,Ni/P ratio and activity of different effects of the components of Ni2 P loading,different amount of template on the activity of the catalyst,determine the best preparation of composite carrier n（ Ti）/n（ Al） = 1 /4; The template agent and tetrabutyl titanate optimal mole ratio was0. 2; Pitot pressure of 3 MPa,volume of 3 h- 1,hydrogen oil volume was 500,under the condition of the reaction temperature is 360 ℃,catalyst hydrogenation denitrification activity can amount to 98%.