Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (3): 533-539.doi: 10.3866/PKU.WHXB201501094

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Preparation, Characterization and Hydrodesulfurization Catalytic Performances of Mo-Ni2P/SBA-15 Catalysts

WANG Zhou-Jun1, WU Ping-Yi1,2, LAN Ling2, LIU Kun-Hong2, HU Ya-Qiong2, JI Sheng-Fu1   

  1. 1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
    2. Petrochemical Research Institute, PetroChina, Beijing 100195, P. R. China
  • Received:2014-10-31 Revised:2015-01-07 Published:2015-03-06
  • Contact: JI Sheng-Fu E-mail:jisf@mail.buct.edu.cn
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2006CB202503) and PetroChina Innovation Foundation, China (2010D-5006-0401).

Abstract:

A series of Mo-Ni2P/SBA-15 catalysts with various Mo loadings were prepared by impregnating nickel nitrate, diammonium hydrogen phosphate, and ammonium molybdate onto an SBA-15 support, followed by temperature-programmed reduction (TPR) under H2. The structure of the catalysts was characterized by Xray diffraction (XRD), N2 adsorption-desorption, transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The catalytic performance was evaluated in the hydrodesulfurization (HDS) of dibenzothiophene (DBT). The results indicate that the mesoporous structure was maintained and the Ni2P phase was present in all of the catalysts. The chemical states of Ni were Niδ+ and Ni2+, the chemical states of P were Pδ- and P5+, and the chemical states of Mo were Moδ+ and Mo6+. Mo was shown to promote the HDS catalytic performance of Ni2P/SBA-15 catalysts. The Mo-Ni2P/SBA-15 catalysts with 1% (w, mass fraction) Mo loading exhibited the highest HDS activity. The conversion of the DBT reached 99.03%under reaction conditions of 380 ℃ and 3.0 MPa. The HDS of DBT proceeded mainly via the direct desulfurization (DDS) pathway over all of the tested Mo-Ni2P/SBA-15 catalysts.

Key words: Mo, Ni2P, Dibenzothiophene, Hydrodesulfurization, Mesoporous

MSC2000: 

  • O643