Abstract: A catalytic composition of matter comprising 0.01 to 5 weight percent of a platinum group component, 0.01 to 5 weight percent of a Group IIB component and 0.1 to 3 weight percent of a halogen in association with a porous solid carrier and processes for the hydroconversion of hydrocarbons using said catalyst.

Abstract: An alkylaromatic hydrocarbon is isomerized by contacting a feed including the alkylaromatic and hydrogen in the presence of 1.5-150 ppm free chloride, and not more than 10 ppm water, with a catalyst containing platinum, rhenium and more than 1.2 weight percent combined chloride on an alumina support at 650.degree.-950.degree. F and 100-300 psi hydrogen pressure.

Abstract: Apparatus and a method for gravity separating lighter and heavier liquids are disclosed, the apparatus including a vessel with its interior divided by a horizontal baffle into upper and lower spaces, which are in communication at one end. The horizontal baffle is shaped to provide a sloping floor in the upper space. Mixed lighter and heavier liquids are passed into the lower space, forming a heavier, lower phase, containing most of the heavier liquid and a lighter, upper phase containing the lighter liquid and a small amount of heavier liquid. The lighter phase passes into one end of the upper space. The opposite end of the upper space has a vertical baffle to retain the lighter phase above the sloping floor formed by the horizontal baffle. The minor portion of heavier liquid separates by gravity from the lighter phase and flows toward the lower portion of the sloping floor, and the lighter liquid is removed from the vessel through an outlet orifice located at the higher portion of the floor.

Abstract: An improved process for removing sulfur from a bed of deactivated and sulfur-contaminated platinum-alumina catalyst in a reactor in a hydrocarbon conversion system having a vessel associated with the reactor, including the steps of: treating the catalyst with an oxygen-containing gas to burn off deactivating substances and oxidize sulfur in the catalyst bed; passing a hydrogen-containing gas through the catalyst bed to remove sulfur from the bed and form gaseous sulfur compounds; and removing the resulting sulfur-containing gas from the reactor and the conversion system by a path that excludes the sulfur-containing gas from contact with the associated vessel.

Abstract: Hydroconversion of hydrocarbons, particularly reforming of naphthas, is conducted in the presence of hydrogen with a catalyst comprising technetium in association with a porous solid carrier. Preferably the catalyst contains a platinum group component in addition to technetium.

Abstract: An improved reforming process is obtained using a catalyst containing platinum, rhenium and chloride disposed on a particulate support formed using alumina obtained by removing water from an aluminum hydroxide produced as a by-product of a Ziegler higher-alcohol synthesis, when the catalyst is prepared by calcining the alumina support at a temperature between 1000.degree. -1500.degree. F to provide a support having a surface area between 140-240 m.sup.2 /g, then impregnating a platinum compound and a rhenium compound into the calcined alumina in the presence of a sufficiently high concentration of chloride to obtain an impregnated composition, which, upon drying, contains at least 1.4 weight percent total chloride, and finally calcining the impregnated preparation to reduce the total chloride content of the final catalyst to less than 1.2 weight percent.

Abstract: A process is disclosed for producing a lubricating oil base stock by: (1) fractionating a hydrocarbon feedstock boiling above 650.degree.

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.

Abstract: A process is disclosed for reforming two hydrocarbon feedstocks by contacting one feedstock and hydrogen with a reforming catalyst in a first reforming zone at reforming conditions including a relatively high reforming pressure; separating a hydrogen-rich gas and first hydrocarbon product from the effluent from the first zone at a pressure below the first reforming pressure; recycling a first portion of the hydrogen-rich gas to provide hydrogen for the first reforming zone; contacting the other feedstock and a second portion of the hydrogen-rich gas with a second reforming catalyst in a second reforming zone at reforming conditions including a pressure lower than the first reforming pressure, with all of the hydrogen gas introduced into the second reforming zone being obtained solely from the first reforming zone effluent; and recovering a second hydrocarbon product from the effluent from the second reforming zone.

Abstract: Hydroconversion of hydrocarbons, particularly reforming of naphthas, is conducted in the presence of hydrogen with a catalyst comprising technetium in association with a porous solid carrier. Preferably the catalyst contains a platinum group component in addition to technetium.