Abstract: An improved catalyst for hydrodesulfurization of heavy feedstocks is disclosed. The catalyst is adopted for on-stream catalyst replacement in upflow processing units. It is characterized by a smaller peak pore diameter than general purpose hydrotreating catalysts.

Abstract: A high-activity hydrotreating catalyst, having a low density, suitable for deep removal of sulfur, nitrogen, micro-carbon residue and organometallic contaminants from hydrocarbon feedstocks is disclosed. Further disclosed is a method of preparation of this catalyst, which may contain 0.3-10 wt % of a Group IVB metal promoter, 5-25 wt % of a Group VIB metal component, and 1-8 wt % of a Group VIII metal, along with a method of hydrotreating employing this catalyst.

Abstract: An improved catalyst for hydrodesulfurization of heavy feedstocks is disclosed. The catalyst is adopted for on-stream catalyst replacement in upflow processing units. It is characterized by a smaller peak pore diameter than general purpose hydrotreating catalysts.

Abstract: A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity.

Abstract: A method for making a hydrotreating catalyst wherein the catalyst is prepared by mixing a peptized hydrated supporting oxide with a hydrated Group IVB metal oxide gel promoter. The Group VIII metals are mixed in with the Group IVB metal oxide gel promoter. A solution containing a soluble Group VIB metal and a basic compound is added. The catalyst is used for hydrodenitrogenation and Ramsbottom Carbon Residue reduction of a hydrocarbon feedstock.

Abstract: A method of making a hydrotreating catalyst wherein the catalyst is prepared by mixing a peptized alumina support containing soluble Group IVB and Group VIII metal compounds with a solution containing a soluble Group VIB metal compound and a basic compound. The catalyst is used for hydrodenitrogenation and Ramsbottom Carbon Residue reduction of a hydrocarbon feedstock.

Abstract: A method of making a hydrotreating catalyst wherein the catalyst is prepared by mixing a peptized alumina support containing soluble Group IVB and Group VIII metal compounds with a solution containing a soluble Group VIB metal compound and a basic compound. The catalyst is used for hydrodenitrogenation and Ramsbottom Carbon Residue reduction of a hydrocarbon feedstock.

Abstract: A method for making a hydrotreating catalyst wherein the catalyst is prepared by mixing a peptized hydrated supporting oxide with a hydrated Group IVB metal oxide gel promoter. The Group VIII metals are mixed in with the Group IVB metal oxide gel promoter. A solution containing a soluble Group VIB metal and a basic compound is added. The catalyst is used for hydrodenitrogenation and Ramsbottom Carbon Residue reduction of a hydrocarbon feedstock.

Abstract: A process for hydrotreating hydrocarbon feedstocks using shaped catalysts is disclosed. When the catalyst is used for diffusion limited reactions, and particularly when it is used for demetalation, shaped catalysts give longer catalyst lifetimes. Preferred shaped include oval and elliptical shapes, with and without bumps.

Abstract: Addition of organofluorine compounds to heavy hydrocarbon oils, particularly petroleum residua prior to catalytic hydroprocessing extends hydroprocessing catalyst life.

Abstract: A spherical catalyst for hydroprocessing hydrocarbonaceous feedstocks. The catalyst consists of an inner region having less than 5% of its port volume contributed by macropores and having between 5 and 30 weight percent total catalytic metals, and an outer region characterized by having more than 10% of its pore volume contributed by macropores and having between 1 and 15 weight percent catalytic metals. A method of preparation of the catalyst is also disclosed.

Abstract: Shaped catalysts useful for hydroprocessing hydrocarbon feedstocks. The catalysts are shaped as oval extrudates and having at least one ridge. The particles can be circumscribed by rectangles having two dimensions, a first dimension between 0.085 inch and 0.125 inch and a second dimension between 0.065 inch and 0.10 inch.

Abstract: In a process for reforming light naphtha with a bimetallic or multimetallic reforming catalyst, such as a platinum-rhenium-halogen catalyst, at conventional reforming conditions, wherein the catalyst is used for an extended continuous on-stream period, the aromatics selectivity of the catalyst is rapidly increased by contacting the naphtha and hydrogen with the catalyst at increased severity operating conditions, such as a reduced pressure less than 90% of the normal reforming pressure, during an initial portion of the on-stream period.

Abstract: The method of making a catalyst comprising alumina with GP VI and VIII components wherein the method comprises peptizing an alumina powder with an aqueous acid solution of a group VIII metal salt, neutralizing the peptized alumina/group VIII metal with an aqueous solution of a nitrogen-containing base with a dissolved group VI metal salt therein, extruding, drying, and calcining the catalytic particles.

Abstract: Catalyst shapes for inorganic oxide, hydroprocessing catalysts are disclosed. When the catalyst is used for diffusion limited reactions, and particularly when it is used for demetalation, shaped catalysts give longer catalyst lifetimes. Preferred shapes include fluted trilobal, asymmetric quadralobal and elongated quadralobal.

Abstract: Catalyst shapes for inorganic oxide, hydroprocessing catalysts are disclosed. When the catalyst is used for diffusion limited reactions, and particularly when it is used for demetalation, shaped catalysts give longer catalyst lifetimes. Preferred shapes include oval and elliptical shapes, with and without bumps.

Abstract: Isomerizable light paraffinic hydrocarbon feeds are isomerized in an improved process using a particular super-chlorided reforming catalyst under isomerizing conditions. A chloride source in the feed stabilizes the catalyst. This process provides for a material octane improvement of the feed without excessive loss thereof to normally gaseous hydrocarbons.

Abstract: Thiol impurities are absorbed and removed from hydrocarbon oils by contacting the oil in the absence of molecular oxygen with a scavenger at a temperature in the range of about 120.degree. to 400.degree. C. The scavenger is a composite having a copper component and an inorganic porous carrier component and having a surface area in the range 20 to 1000 square meters per gram. The contacting must be discontinued when the thiol impurity content of the effluent product exceeds about 0.3 ppm.

Abstract: A hydrocarbon feed containing an olefinic component and sulfur-containing impurities is upgraded in a sulfur removal process without hydrogenating the olefins by contacting a mixture of the feed and hydrogen gas with a catalyst comprising copper under conditions, including a temperature in the range of about 120.degree. C to 400.degree. C.

Abstract: A process is disclosed for regenerating a solid reactant comprising a copper component and a chromium component disposed on a porous carbon support when the reactant has been expended by reaction with hydrogen sulfide contained in hydrogen recycle gas in a hydrocarbon reforming system, regeneration being accomplished by: (a) contacting the expended solid reactant with dilute oxygen in an inert diluent gas at a temperature in the range from 200.degree. to 425.degree. F; (b) contacting the solid material from step (a) with hydrogen at a temperature in the range from 300.degree. to 500.degree. F; and (c) contacting the solid material resulting from step (b) with an inert gas at a temperature in the range from 400.degree. to 600.degree. F.