| abstract |
METHOD FOR HYDROTREATMENT OF A HEAVY LOAD OF HYDROCARBONS CONTAINING ASPHALTENS AND OR RESINS. IT IS OPERATED IN THE PRESENCE OF A CATALYST PREPARED BY PRE-REACTION, IN A HYDROCARBON, OF AN ORGANIC COMPOUND OF TRANSITION METAL WITH AN ORGANO-ALUMINIC COMPOUND. THE METAL OF THE ORGANIC COMPOUND MAY BE TITANIUM, ZIRCONIUM, VANADIUM, CHROME, MOLYBDENE, TUNGSTENE, MANGANESE, RHENIUM, IRON, RUTHENIUM, COBALT, NICKEL, COPPER, ZINC AND OR L 'TIN. |