Hydrodesulfurization of Dibenzothiophen with MoO3/TiO2 Catalyst
LIU Jin-long ZHU Yin-hua YANG Zhu-hong WANG Hai-tang LU Xiao-hua FENG Xin WANG Huai-yuan
State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology College of Chemical Engineering, Nanjing University of Technology College of Chemical Engineering, Nanjing University of Technology Chemical Engineering Department， Daqing Petroleum Institute
Abstract：Mesoporous titania whiskers were used as MoO3 hydrodesulfurization catalyst support. The novel support was impregnated with ammonium heptamolybdate [(NH4)6Mo7O24×4H2O] 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℃, 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.
2009, Vol. 9 
