Removal of metals from heavy oils with phosphorus - Alumina catalysts

摘要: Earlier it was found that various oil-soluble phosphorous compounds were active for vanadium removal from different crude oils. The preferentially reacted with low molecular weight species in the resin fraction and therefore highest rate of observed when asphaltene partially or completely removed. Phosphorous promoted during hydroprocessing over alumina a trickle bed reactor. Some metal phosphates prepared tested demetallization activity. Several mixed phosphates, such as Cr-Zr, Ni-Zr, Cu-Zr, V-Co-Zr, Fe-Co-Zr, Ni-Co-Zr, etc., exhibited high activity both nickel removal. These catalysts to possess HDM maintenance comparable conventional hydrotreating available commercially. selectivity similar commercial catalyst, but much lower than earlier oil soluble compounds. Since lack could be due their transition component, they investigated heavy oils aluminas impregnated inorganic