Ni2P/ZrO2-SBA-15 Dibenzothiophene Hydrodesulfurization Catalysts: Preparation, Characterization and Evaluation

被引：3
作者：
Ma H. [1 ]
Li Q. [1 ]
Shi Y. [1 ]
Sun X. [1 ]
机构：
[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin
来源：
Transactions of Tianjin University | 2018年 / 24卷 / 04期
关键词：
Hydrodesulfurization; Nickel phosphide; ZrO[!sub]2[!/sub] modified SBA-15;
D O I：
10.1007/s12209-017-0099-1
中图分类号：
学科分类号：
摘要：
Ni2P/ZrO2-SBA-15 catalysts with different zirconium n-propoxide/SBA-15 mass ratios were synthesized to evaluate their dibenzothiophene hydrodesulfurization catalytic activity. Effect of ZrO2 introduction was investigated. Supports and catalysts were characterized by BET, XRD, 29Si NMR, XPS and FTIR. The results indicated that zirconium was incorporated into SBA-15 in the forms of [(–O–)2Si(–O–Zr)2] and/or [(–O–)3Si–O–Zr], and that the SBA-15 framework structure was maintained after incorporation of ZrO2. With zirconium content increasing, ZrO2 was transformed from amorphous phase to tetragonal phase. Zirconium incorporation into SBA-15 supports could facilitate to form more dispersed Ni2P active phase. There might be some interaction occurring between the P and Zr species. In addition to Ni2P, another kind of active phase, ZrP, was formed, which might exhibit a better HDS activity than Ni2P. It was observed that at a temperature of 280 °C, pressure of 3.0 MPa, WHSV of 6.5 h−1 and H2 to oil ratio of 450, the Ni2P/Zr-SBA(1.5) catalyst, where 1.5 represents zirconium n-propoxide/SBA-15 mass ratio, showed the highest DBT conversion, which was 86.6%, almost 35% higher than that of the Ni2P/Zr-SBA(0) catalyst. © 2017, Tianjin University and Springer-Verlag GmbH Germany.
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页码：340 / 350
页数：10
相关论文
共 48 条
[1]  
Hao L., Xiong G., Liu L., Et al., Preparation of highly dispersed desulfurization catalysts and their catalytic performance in hydrodesulfurization of dibenzothiophene, Chin J Catal, 37, 3, pp. 412-419, (2016)
[2]  
Liu H., Yin C., Zhang H., Et al., Sustainable synthesis of ammonium nickel molybdate for hydrodesulfurization of dibenzothiophene, Chin J Catal, 37, 9, pp. 1502-1511, (2016)
[3]  
Chianelli R.R., Fundamental studies of transition metal sulfide hydrodesulfurization catalysts, Catal Rev Sci Eng, 26, 3-4, pp. 361-393, (1984)
[4]  
Topse H., Clausen B.S., Importance of Co-Mo-S type structures in hydrodesulfurization, Catalysis Reviews Science and Engineering, 26, 3-4, pp. 395-420, (1984)
[5]  
Wang A., Ruan L., Teng Y., Et al., Hydrodesulfurization of dibenzothiophene over siliceous MCM-41-supported nickel phosphide catalysts, J Catal, 229, 2, pp. 314-321, (2005)
[6]  
Infantes-Molina A., Cecilia J.A., Pawelec B., Et al., Ni<sub>2</sub>P and CoP catalysts prepared from phosphite-type precursors for HDS–HDN competitive reactions, Appl Catal A, 390, 1, pp. 253-263, (2010)
[7]  
Cho K.S., Seo H.R., Lee Y.K., A new synthesis of highly active Ni<sub>2</sub>P/Al<sub>2</sub>O<sub>3</sub> catalyst by liquid phase phosphidation for deep hydrodesulfurization, Catal Commun, 12, 6, pp. 470-474, (2011)
[8]  
Liu D., Wang A., Liu C., Et al., Bulk and Al<sub>2</sub>O<sub>3</sub>-supported Ni<sub>2</sub>P HDS catalysts prepared by separating the nickel and hypophosphite sources, Catal Commun, 77, pp. 13-17, (2016)
[9]  
Song H., Dai M., Song H., Et al., Synthesis of a Ni<sub>2</sub>P catalyst supported on anatase-TiO<sub>2</sub> whiskers with high hydrodesulfurization activity based on triphenylphosphine, Catal Commun, 43, pp. 151-154, (2014)
[10]  
Jun R.E.N., Wang J.G., Li J.F., Et al., Density functional theory study on crystal nickel phosphides, J Fuel Chem Technol, 35, 4, pp. 458-464, (2007)
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