Ni-Mo/γ-Al₂O₃ catalysts with different Ni loadings were prepared. They were characterized by X-ray diffraction (XRD), N₂ adsorption, IR spectra of adsorbed pyridine (Py-IR), temperature-programmed desorption of ammonia (NH₃-TPD), temperature-programmed reduction of H₂ (H₂-TPR), and high resolution transmission electron microscopy (HRTEM). The hydrodenitrogenation (HDN) performance of catalysts for coal tar were evaluated. The best hydrodenitrogenation activity was observed on the catalysts with a Ni loading of 6.25 wt% and a Ni/(Ni+Mo) ratio of 0.4. Also, the methods of co-impregnation and sequence-impregnation were compared. The denitrification rate of co-impregnation catalyst NiMo-5-co (71.2%) was slightly lower than that of sequence-impregnation catalyst NiMo-5 (71.7%). Disparate product distribution was obtained on NiMo-5-co and NiMo-5. The dispersion of active components, the distribution of pore and acid on catalysts played an important role in HDN process of coal tar.

镍-钼/γ-Al系_2种ö ₃中制备的催化剂具有不同的Ni负载。它们的特征在于X射线衍射（XRD），N ₂吸附，吸附的吡啶的红外光谱（Py-IR），氨的程序升温脱附（NH ₃ -TPD），程序升温的H ₂（H ₂还原）-TPR）和高分辨率透射电子显微镜（HRTEM）。评价了煤焦油催化剂的加氢脱氮（HDN）性能。在Ni负载量为6.25wt％且Ni /（Ni + Mo）比为0.4的催化剂上观察到最佳的加氢脱氮活性。此外，比较了共浸渍和顺序浸渍的方法。共浸渍催化剂NiMo-5-co的反硝化率（71.2％）比顺序浸渍催化剂NiMo-5的反硝化率（71.7％）略低。在NiMo-5-co和NiMo-5上获得了不同的产品分布。活性成分的分散，孔隙和酸在催化剂上的分布在煤焦油的HDN过程中起着重要作用。