The main idea of the investigation was to define testing parameters with lowest influence internal and external diffusion on catalytic activity in hydrodesulfurization dibenzothiophene. Traditional experimental methods were used determine conditions for diffusion. Simultaneous change a linear feedstock rate catalyst loading at constant weight hour space velocity process temperature (240–260 °C)...

To enhance the hydrodesulfurization (HDS) activity of SiO2-supported Rh phosphide catalysts, various second metal-added Rh–P catalysts were developed; furthermore, effect addition metal on HDS performance was examined. The metals (M: Ru, Pt, and Ir) selected as per Sabatier principle. In situ X-ray diffraction revealed formation an Rh2P phase in Rh–M–P catalyst after reduction. Ru Pt to enhance...