Interaction between Ni promoter and Al2O3 support and its effect on the performance of NiMo/γ-Al2O3 catalyst in hydrodesulphurization

被引：0

作者：

Zhao R.-Y. ^{[1
]}

Cao D.-W. ^{[1
]}

Zeng L.-Y. ^{[1
]}

Liang J. ^{[1
]}

Liu C.-G. ^{[1
]}

机构：

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

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2016年 / 44卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Active component; Alumina; Hydrodesulphurization; Nickel; NiMo/γ-Al[!sub]2[!/sub]O[!sub]3[!/sub; Promoter; Support;

D O I：

10.1016/s1872-5813(16)30026-3

中图分类号：

学科分类号：

摘要：

A series of NiMo/γ-Al2O3 catalysts with different NiO loadings were prepared and characterized by XRD, BET, 27Al-NMR, Py-IR and HRTEM. The activity of these NiMo/γ-Al2O3 catalysts in the hydrodesulphurization (HDS) of dibenzothiophene (DBT) was evaluated in a high pressure micro reactor; the interaction between Ni promoter and γ-Al2O3 support as well as its effect on the nanostructure of active MoS2 phase and HDS performance was then investigated. The results indicate that Ni promoter prefers to interact with the tetra-coordinated unsaturated aluminum sites on the support surface. With the increase of NiO loading, the average number of stacking layers for the MoS2 clusters in the sulfided NiMo/γ-Al2O3 catalysts is increased at the expense of the average length. As the slim MoS2 clusters are more active for the HDS of DBT, the addition of Ni promoter is then effective to enhance the catalytic activity of NiMo/γ-Al2O3 in HDS, but may lead to a slight decrease in the hydrogenation selectivity. © 2016, Science Press. All right reserved.

引用

下载

页码：564 / 569

页数：5

共 19 条

[1] Bouwens S.M.A.M., Vanzon F.B.M., Vandijk M.P., Vanderkraan A.M., Debeer V.H.G., Vanveen J.A.R., Koningsberger D.C., On the structural differences between alumina-supported comos type I and alumina-,silica-, and carbon-supported comos type II phases studied by XAFS, MES, and XPS, J Catal, 146, 2, (1994)
[2] Yin H.-L., Zhou T.-N., Liu C.-G., Effect of phosphorus on the interaction between active component and support of NiMo/Al2O3 catalyst, Pet Process Petrochem, 7, pp. 32-36, (2012)
[3] Lauritsen J.V., Kibsgaard J., Olesen G.H., Moses P.G., Hinnemann C., Helveg S., Location and coordination of promoter atoms in Co- and Ni-promoted MoS2-based hydrotreating catalysts, J Catal, 249, pp. 220-233, (2007)
[4] Digne M., Sautet P., Raybaud P., Use of DFT to achieve a rational understanding of acid-basic properties of γ-alumina surfaces, J Catal, 226, 1, pp. 54-68, (2004)
[5] Liu X., DRIFTS study of surface of γ-alumina and its dehydroxylation, J Phys Chem C, 112, pp. 5066-5073, (2008)
[6] Ostromecki M.M., Burcham L.J., Wachs I.E., Ramani N., Ekerdt J.E., The influence of metal oxide additives on the molecular structures of surface tungsten oxide species on alumina:I.Ambient conditions, J Mol Catal A: Chem, 132, pp. 43-57, (1998)
[7] Zhao C., Yu Y., Jentys A., Lercher J.A., Understanding the impact of aluminum oxide binder on Ni/HZSM-5 for phenol hydrodeoxygenation, Appl Catal B: Environ, 132, pp. 282-292, (2013)
[8] Borello E., Cimino A., Ghiotti G., Jacono M.L., Schiavello M., Zecchina A., Surface configurations and infra-red studies on nickel oxide supported on η-and γ-Al2O3, Discuss Faraday Soc, 52, pp. 149-160, (1971)
[9] Sun Y., Yuan L., Ma S., Han Y., Zhao L., Wang W., Improved catalytic activity and stability of mesostructured sulfated zirconia by Al promoter, Appl Catal A: Gen, 268, 1-2, pp. 17-24, (2004)
[10] Morterra C., Coluccia S., Chirino A., Boccuzzi F., Infrared study of the adsorption of pyridine on α-Al2O3, J Catal, 54, 3, pp. 348-364, (1978)

← 1 2 →