Effect of B, P, K Elements Modification on Properties of Alumina Supports and Ni-Mo Catalysts
1. Ulanqab Medical College, Wulanchabu 012000, China;
2. SINOPEC Dalian (Fushun) Research Institute of Petroleum and Petrochemicals, Dalian 116045, China
Abstract：The alumina supports were modified by phosphorus, boron and potassium elements, and the hydrogenation catalysts were prepared with the modified alumina as the supports. The properties of the alumina supports and the Ni-Mo catalysts were analyzed by X-ray diffraction (XRD), Fourier infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), N2 adsorption-desorption, pyridine adsorption-desorption (Py-IR), temperature programmed reduction (TPR), Raman and in situ CO adsorption methods. The hydrodesulfurization and hydrodenitrogenation activities of these catalysts were tested with diesel oil as raw material. It was found that the OH structure and surface acid properties of the supports were modified by adding the elements. Adding B and P more octahedral coordination molybdenum species were formed, the content of active phase and the average length and stacking layers of MoS2 were increased. Adding K decreased the octahedral coordination molybdenum species and the content of active phase as well as the average length and stacking layers. The results showed that adding elements P and B could improve the hydrodesulfurization and hydrodenitrogenation activities of Ni-Mo catalysts, and adding element K reduced the hydrodesulfurization activity.
YAN Xiangyun1,ZHANG Zhenping1,LI Zhiguo1 et al. Effect of B, P, K Elements Modification on Properties of Alumina Supports and Ni-Mo Catalysts[J]. 化学反应工程与工艺, 2020, 36(3): 230-238.
