improvement of heavy oil hydrodesulfurization catalyst support properties by acetic acid treatment

A specific type of mesopore extrudates gamma alumina was prepared; which is applied as the catalyst in the heavy oil hydrodesulfurization unit. extrudates gamma alumina has been devised the boehmite powder; several samples have been utilized to investigate the concentration and the number of acetic acid treatment effects on the textural properties. textural properties of catalyst support have been characterized by x-ray diffraction, n2-adsorption/desorption techniques, the best results were observed at 25% acetic acid after three times treatments. the active metals (3.71%molybdenium &1.43%nickle) have been impregnated on the catalyst support. the prepared catalyst determined by x-ray fluorescence, n2- adsorption/desorption, bench scale reactor test, nh3-temperature programmed desorption and radial strength techniques.