Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units

LI Cui-qing; DENG Ming-liang; WANG Hong; GE Ming-lan; GUO Zhi-wu; SUN Gui-da

Volume 40 Issue 04

Apr. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (04): 501-506

LI Cui-qing, DENG Ming-liang, WANG Hong, GE Ming-lan, GUO Zhi-wu, SUN Gui-da. Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 501-506.

Citation:

LI Cui-qing, DENG Ming-liang, WANG Hong, GE Ming-lan, GUO Zhi-wu, SUN Gui-da. Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 501-506.

Citation:

LI Cui-qing, DENG Ming-liang, WANG Hong, GE Ming-lan, GUO Zhi-wu, SUN Gui-da. Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 501-506.

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Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units

The Green Chemistry and Catalysis Materials Laboratory, Beijing Institute of Petrochemical Technology, Beijing 102617, China

Funds: Beijing Natural Science Foundation (2052009) and Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (PHR200907129).

Received Date: 2011-03-28
Rev Recd Date: 2011-06-22
Publish Date: 2012-04-30

Abstract

Abstract

As a support, AlMCM-41 containing aluminophosphate building units with different Si/Al molar ratio(Si/Al=30, 40, 50, 55, 60, respectively) was synthesized by microwave heating method. The supported tungsten phosphide(WP) catalysts with different Si/Al molar ratio were prepared by impregnation and H₂-TPR(temperature programed reduction in hydrogen flow)method. The samples were characterized by X-ray diffraction (XRD), BET specific surface area, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) methods. The dibenzothiophene (DBT) hydrodesulfurization (HDS) activities of the catalysts were evaluated by a fixed-bed micro-reactor. Active species of WP and the structure of -Al-O-W-P, the matter with some activity, were detected on the catalysts surface. WP was the dominative active phase. The percentage of active phase WP on the catalyst surface was influenced by the Si/Al molar ratio. Catalysts with different Si/Al molar ratio exhibited different selective hydrogenation performances, and direct hydrodesulfurization(DDS) was the main DTB HDS route. Catalyst with Si/Al molar ratio of 55 was found to give a higher DDS products (PB) selectivity of 82.7% and a higher DBT HDS conversion of 93.1%, which was favor to reducing the hydrogen consumption and protecting the environment.
- tungsten phosphide,
- AlMCM-41,
- aluminophosphate building units,
- composite zeolite,
- dibenzothiophene,
- hydrodesulfurization

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References(29)

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