Study on the Hydrodesulfurization Catalyst of Residual Fuel (Part 3)

Abstract

Summary:The Effects on the catalytic activity of the differences in the preparation methods of hydrodesulfurization catalysts for residual fuel was studied. From the experimental results, the following conclusions were obtained.(1) Two stage impregnation method in which molybdenum was supported first, showed the highest activity which did not depend on whether the impregnation was carried out under normal or decreased pressure.calcination should be within such a time as would not give any effect on its physical structure.(3) The addition of such organic polymers as carbowax 4,000 and avicel in a given amount improved the activity.(4) The addition of palladium and chromium reduced the activity and the addition of magnesia improved it.(5) The optimum amount of supported metals was found to be as follows; the ratio of M0O3/ NiO=2 or 3, the amount of M0O3 12 to 15wt% the amount of NiO 4 to 5 wt%.