Effect of Co Doping on the Cartalytic Performace of Molybdenum Carbide for Thiophene Hydrodesulfurization

Chem. J. Chinese Universities

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Effect of Co Doping on the Cartalytic Performace of Molybdenum Carbide for Thiophene Hydrodesulfurization

JIN Guang-Zhou¹*, Fan Xiu-Ju¹, SUN Gui-Da¹, GAO Jun-Bin¹ , ZHU Jian-Hua²

1. Laboratory of Green Chemistry and Catalytic Materials, Beijing Institute of Petro-Chemical Technology, Beijing 102617, China;
2. Faculty of Chemical Engineering, China University of Petroleum, Beijing 102249, China

Received:2006-12-30 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
Contact: JIN Guang-Zhou

Abstract

Abstract: Molybdenum carbide and cobalt molybdenum carbide catalysts, prepared by temperature-programmed reaction(TPR) with CH₄/H₂ gas mixture to carburize molybdenum trioxide and cobalt molybdenum oxide, were characterized via XRD, BET, SEM and XPS techniques. The effect of cobalt doping on the catalytic performance of molybdenum carbide for thiophene hydrodesulfurization(HDS) was studied. The results indicate that the cobalt molybdenum oxide is the compound oxide of MoO₃ and CoMoO₄, which produces a intergrowth and coexisting product of Co and Mo₂C in the TPR carburization. Co dispersed uniformly in the component of Mo₂C in the form of fine metallic particles. Co doping could decrease the carburizing temperature and particle size in the preparation process, increase the BET specific surface area and raise the content of Mo²⁺ on the surface of molybdenum carbide catalyst. The thiophene HDS activity of Mo₂C was obviously improved in the presence of Co doped by co-precipitation method with Mo, and the maximum synergistic interaction between Co and Mo appears at the Co/Mo molar ratio of 0.2.

Key words: Cobalt, Molybdenum carbide, Thiophene, Hydrodesulfurization

CLC Number:

O643

TrendMD:

JIN Guang-Zhou¹*, Fan Xiu-Ju¹, SUN Gui-Da¹, GAO Jun-Bin¹ , ZHU Jian-Hua². Effect of Co Doping on the Cartalytic Performace of Molybdenum Carbide for Thiophene Hydrodesulfurization[J]. Chem. J. Chinese Universities, doi: .

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Effect of Co Doping on the Cartalytic Performace of Molybdenum Carbide for Thiophene Hydrodesulfurization

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