关键词: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: Times New Roman">磷化镍；二硫化钼催化剂；调变；加氢脱硫

Abstract:

A series of Ni₂P-modified MoS₂/γ-Al₂O₃ catalysts with constant Mo contents were prepared by the thermal decomposition of ammonium tetrathiomolybdate and nickel hypophosphite under N₂ atmosphere.The structure of the catalysts was characterized by N₂ adsorption-desorption, X-ray diffraction, and high-resolution transmission electron microscopy.The catalytic performance of the catalysts for hydrodesulfurization(HDS)was evaluated in a fixed-bed microreactor using dibenzothiophene(DBT)as the model compound.The results indicated that when the amount of Ni₂P was 4%（mass）, the catalyst showed a relatively high catalytic activity with a strong preference for the hydrogenation desulfurization(HYD)pathway.Its hydrogenation selectivity(2.11)was 2.9 times that of reference catalyst(0.72)at 300℃.The addition of Ni₂P had an effect on the average stacking number and slab length of MoS₂.

Key words: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: Times New Roman">磷化镍；二硫化钼催化剂；调变；加氢脱硫