Abstract
Mesoporous titania whiskers were used as MoO3 hydrodesulfurization catalyst support. The novel support was impregnated with ammonium heptamolybdate [(NH4)6Mo7 O24·4H2O] solution at different concentrations, and MoO3/TiO2 catalyst with different MoO3 loadings was obtained. The catalyst was characterized by XRD, N2 adsorption-desorption and SEM, the one with higher dispersion of MoO3 was chosen for dibenzothiophene hydrodesulfurization. And the influences of reaction conditions and stability of MoO3/TiO2 catalyst on dibenzothiophene hydrodesulfurization of the chosen catalyst were tested in a fixed-bed reactor. Dibenzothiophene conversion rate could approach 100% under reaction temperature 280~300°C, hydrogen pressure 2.0 MPa, hydrogen/oil ratio 600 and LHSV 4 h-1. Furthermore, there was no obvious evidence of deactivation of the catalyst after running for a long time of over 1000 h.
Original language | English |
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Pages (from-to) | 882-886 |
Number of pages | 5 |
Journal | Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering |
Volume | 9 |
Issue number | 5 |
State | Published - Oct 2009 |
Keywords
- Dibenzothiophene
- Hydrodesulfurization
- Mesoporous titania whisker
- Molybdenum oxide