采用完全液相法制备以TiO_2-AlOOH为复合载体,Ni和W为活性组分的浆状加氢催化剂,考察n(H_2O)∶n(Al)对Ni-W催化剂结构与催化性能的影响,并利用XRD,BET,NH_3-TPD等手段对催化剂进行表征.采用GC-MS,TG和元素分析对原料及产物的馏分分布及组成进行分析,结果表明:n(H_2O)∶n(Al)为75时制备的Ni-W催化剂,产物中轻组分含量最高,加氢脱硫(HDS)活性及产物油的n(H)∶n(C)最高,对煤焦油加氢处理具有较优的加氢效果.
Slurry hydrogenation catalyst with TiO_2-AlOOH as the composite carrier and Ni and W as active components were prepared by a complete liquid phase method.The effect of n(H_2O)∶n(Al)on the structure and catalytic properties of Ni-W catalysts were investigated and the catalysts were characterized by XRD,BET,NH_3-TPD and so on.The fraction distribution and composition of raw materials and products were analyzed by GC-MS,TG and ultimate analylzer,the results show that the content of light component,the hydrodesulfurization(HDS)activity and the n(H)∶n(C)in the products are the highest when n(H_2O)∶n(Al)is 75 in the catalysts.It indicates that Ni-W catalyst with n(H_2O)∶n(Al)75 has better hydrogenation effect on coal tar hydrotreating than that of the other value of n(H_2O)∶n(Al).