TiO2-Supported Mo Model Catalysts: Ti as Promoter for Thiophene HDS? |
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| Authors: | L Coulier JAR van Veen JW Niemantsverdriet |
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| Affiliation: | (1) Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands |
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| Abstract: | The combination of thiophene hydrodesulfurization (HDS) activity measurements and X-ray photoelectron spectroscopy on flat model systems of sulfided HDS Mo catalysts showed that sulfided Ti-species can act as a promoter in the same way as Co and Ni, although less effectively. This explains the higher thiophene HDS activity and hydrogenation selectivity of Mo/TiO2 compared with Mo/Al2O3, while for Ni-promoted Mo catalysts the difference between the two supports is negligible. |
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| Keywords: | hydrodesulfurization X-ray photoelectron spectroscopy (XPS) thiophene TiO2 sulfidation molybdenum |
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