Testing conditions for CoMo HDS catalyst in the kinetic region: integrated approach using the math calculations and catalytic experiments

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) which impact is minimal. Catalytic tests, including variation fraction size, carried out It found that when size 0.1–0.25 mm used, fluctuation sulfur conversion smallest. Besides, validate results, calculations performed mass balance equations expressions HDS modeling. resulting data experiments demonstrated achieved less than 260 °C mm.