Synthesis, characterization and hydrotreating
performance of supported tungsten phosphide catalysts

doi:10.1007/s11705-008-0038-8

Frontiers of Chemical Engineering in China - Selected Publications from Chinese Universities

2008, Vol. 2

Issue (2): 155-164 https://doi.org/10.1007/s11705-008-0038-8

本期目录

Synthesis, characterization and hydrotreating performance of supported tungsten phosphide catalysts

SUN Guida, LI Cuiqing, ZHOU Zhijun, LI Fengyan

Green Chemistry and New Catalytic Material Laboratory, Beijing Institute of Petrochemical Technology

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Abstract：Supported tungsten phosphide catalysts were prepared by temperature-programmed reduction of their precursors (supported phospho-tungstate catalysts) in H₂ and characterized by X-ray diffraction (XRD), BET, temperature-programmed desorption of ammonia (NH₃-TPD) and X-ray photoelectron spectroscopy (XPS). The reduction-phosphiding processes of the precursors were investigated by thermogravimetry and differential thermal analysis (TG-DTA) and the suitable phosphiding temperatures were defined. The hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) activities of the catalysts were tested by using thiophene, pyridine, dibenzothiophene, carbazole and diesel oil as the feedstock. The TiO₂, ?-Al₂O₃ supports and the Ni, Co promoters could remarkably increase and stabilize active W species on the catalyst surface. A suitable amount of Ni (3%–5%), Co (5%–7%) and V (1%–3%) could increase dispersivity of the W species and the BET surface area of the WP/?-Al₂O₃ catalyst. The WP/?-Al₂O₃ catalyst possesses much higher thiophene HDS and carbazole HDN activities and the WP/TiO₂ catalyst has much higher dibenzothiophene (DBT) HDS and pyridine HDN activities. The Ni, Co and V can obviously promote the HDS activity and inhibit the HDN activity of the WP/?-Al₂O₃ catalyst. The G-Ni5 catalyst possesses a much higher diesel oil HDS activity than the sulphided industrial NiW/?-Al₂O₃ catalyst. In general, a support or promoter in the WP/?-Al₂O₃ catalyst which can increase the amount and dispersivity of the active W species can promote its HDS and HDN activities.

出版日期: 2008-06-05

引用本文:

. Synthesis, characterization and hydrotreating performance of supported tungsten phosphide catalysts[J]. Frontiers of Chemical Engineering in China - Selected Publications from Chinese Universities, 2008, 2(2): 155-164.
SUN Guida, LI Cuiqing, ZHOU Zhijun, LI Fengyan. Synthesis, characterization and hydrotreating performance of supported tungsten phosphide catalysts. Front. Chem. Sci. Eng., 2008, 2(2): 155-164.

链接本文:

https://academic.hep.com.cn/fcse/CN/10.1007/s11705-008-0038-8
https://academic.hep.com.cn/fcse/CN/Y2008/V2/I2/155

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