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Citation: HUANG Xiao-Fan, JI Sheng-Fu, WU Ping-Yi, LIU Qian-Qian, LIU Hui, ZHU Ji-Qin, LI Cheng-Yue. Structure and Hydrodesulfurization Performances of Ni₂P/SBA-15 Catalysts[J]. Acta Physico-Chimica Sinica, ;2008, 24(10): 1773-1779. doi: 10.3866/PKU.WHXB20081007 shu

Structure and Hydrodesulfurization Performances of Ni₂P/SBA-15 Catalysts

1.
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received Date: 21 April 2008
Available Online: 3 September 2008

The samples containing nickel phosphide precursors were synthesized by co-impregnation method using mesoporous molecular sieve SBA-15 as support, nickel nitrate as nickel source, and (NH4)2HPO4 as phosphorus source. Then, the Ni2P/SBA-15 catalysts with different Ni2P contents were prepared by temperature-programmed reduction method in H2 flow. The structure of the catalysts was characterized using X-ray diffraction (XRD), N2 adsorption/desorption, transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) techniques. The catalytic performances of hydrodesulfurization (HDS) were evaluated in a fixed-bed micro-reactor using thiophene and dibenzothiophene (DBT) as the model compounds. The results indicated that the mesoporous structure of SBA-15 was still preserved in the Ni2P/SBA-15 catalysts. The active component Ni2P was well dispersed on the surface of the catalysts. The BET surface area, pore volume, and pore diameter decreased obviously with the increase of Ni2P loading. The Ni2P/SBA-15 catalysts had the better catalytic performance at 320 ℃ when Ni2P loading was from 15% to 25% (w, mass fraction) . All of the catalysts showed an excellent deep HDS performance when reaction temperature was higher than 360 ℃. The mechanism of the HDS of DBT was the main direct desulfurization (DDS) over the Ni2P/SBA-15 catalysts.
- Ni2P; SBA-15; Thiophene; Dibenzothiophene; Hydrodesulfurization
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沈阳化工大学材料科学与工程学院沈阳 110142

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Structure and Hydrodesulfurization Performances of Ni2P/SBA-15 Catalysts

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通讯作者: 陈斌, bchen63@163.com

Structure and Hydrodesulfurization Performances of Ni₂P/SBA-15 Catalysts