Supported noble metal catalysts are highly active for deephydrodesulfurization, but are sensitive to deactivation by sulfur.  Silica-supported rhodium, ruthenium and palladium phosphide catalysts have been synthesized via temperature programmed reduction (TPR), characterized by a range of physicochemical techniques, and their hydrodesulfurization (HDS) properties evaluated.  The noble metal phosphide catalysts exhibit high activities for dibenzothiophene HDS and excellent stabilities under reaction conditions, which can be traced to high turnover frequencies and strong resistance to sulfur incorporation. The effects of noble metal phosphide particle size and composition on HDS activity and selectivity will be discussed.

Dibenzothiophene hydrodesulfurization over noble metal phosphide catalysts

239th National Meeting (2010)

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