Influences of different phosphorus contents on NiMoP/Al2O3 hydrotreating catalysts

被引：0

作者：

Zhou, Tong-Na ^{[1
]}

Yin, Hai-Liang ^{[1
]}

Han, Shu-Na ^{[1
]}

Chai, Yong-Ming ^{[1
]}

Liu, Yun-Qi ^{[1
]}

Liu, Chen-Guang ^{[1
]}

机构：

[1] State Key Laboratory of Heavy Oil Processing, CNPC, China University of Petroleum (East China)

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2009年 / 37卷 / 03期

关键词：

Active phase; High-resolution electron microscopy; NiMoP/Al[!sub]2[!/sub]O[!sub]3[!/sub] hydrotreating catalysts; Phosphorus;

D O I：

10.1016/s1872-5813(09)60023-2

中图分类号：

学科分类号：

摘要：

NiMoP/Al2O3 hydrotreating catalysts with different phosphorus contents were prepared by impregnating NiMoP aqueous solution into γ-Al2O3. The hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) performances of the catalysts were evaluated using the model compounds dibenzothiophene and quinoline methylbenzene. The results show that the HDS and HDN performances of the catalysts can be improved by adding moderate quantities of phosphorus in the catalysts, and its performance can be decreased markedly when the catalysts have high phosphorus content. The catalysts were investigated by means of XRD and high-resolution transmission electron microscopy (HRTEM) to get a better understanding of the nature of active. The results of XRD and HRTEM characterizations indicate that the number of stacked layers of active component MoS2 increases with the increase of the phosphorus content. Because the interaction between active component and carrier γ-Al2O3 is weakened by adding phosphorus into the catalysts, the relative content of type-II Ni-Mo-S" phase is increased."

引用

页码：330 / 334

页数：4

共 17 条

[11] Daly F.P., Brinen J.S., Reaction of carbon supports with ammonia effect on molybdenum-carbon interaction, Appl Catal, 30, 1, pp. 91-97, (1987)
[12] Wang I., Chang R.C., Control of pore size in alumina catalyst support: A review, J Catal, 117, 1, pp. 266-274, (1989)
[13] TopsOe H., Clausen B.S., Candia R., Wivel C., MOrup S., In situ Mössbauer emission spectroscopy studies of unsupported sulfided Co-Mo hydrodesulfurization catalysts: Evidence for and nature of a Co-Mo-S phase, J Catal, 68, 2, pp. 433-452, (1981)
[14] Candia R., Sorensen O., Villadsen J., TopsOe N.Y., Clausen B.S., TopsOe H., Active phase in sulfided NiMo/γ-Al2O3 catalyst, Bull Soc Chim Belg, 93, pp. 763-765, (1984)
[15] Morales A., Ramirez M.M., Hernandes F., Adsorption mechanism of phosphorus on alumina, Appl Catal, 41, pp. 261-271, (1988)
[16] Gishti K., Iannibello A., Marengo S., Morelli G., Tittarelli P., On the role of phosphate anion in the MoO3-Al2O3 based catalysts, Appl Catal, 12, 4, pp. 381-393, (1984)
[17] Mangnus P.J., van Veen J.A.R., Eijsbouts S., de Beer V.H.J., Moulijn J.A., Structure of phosphorus containing CoO-MoO3/Al2O3 catalysts, Appl Catal, 61, 1, pp. 99-122, (1990)

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