Abstract: A process for isomerizing hydrocarbons is disclosed. The process includes contacting, under reaction conditions, a hydrocarbon-containing fluid containing a saturated hydrocarbon, preferably a normal paraffin containing in the range of from about 4 carbon atoms to about 10 carbon atoms per molecule, with a composition in a single-stage reaction zone. The process includes isomerizing such saturated hydrocarbon to thereby provide a product containing an isomerized hydrocarbon. The composition used in the process contains a zeolite and a metal carbide. The composition can be produced by combining a metal, preferably such metal is in a metal compound, with the zeolite to thereby provide a metal-promoted zeolite. The metal-promoted zeolite is then calcined or steamed followed by contacting the resulting zeolite with a hydrocarbon, preferably in the presence of hydrogen, to thereby provide a carburized metal-promoted zeolite.

Abstract: A catalyst composition and a process for hydrodealkylating a C.sub.9 + aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C.sub.6 to C.sub.8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite, a metal oxide, and an activity modifier selected from the group consisting of silicon oxides, sulfur oxides, phosphorus oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, germanium oxides, indium oxides, lanthanum oxides, cesium oxides, and combinations of any two or more thereof. The process comprises contacting a fluid which comprises a C.sub.9 + aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon.

Abstract: A catalyst system comprising a first solid material comprising activated carbon and at least one carburized transition metal; and a second solid material comprising at least one halogen component and alumina, and a method of preparing such catalyst system which comprises mixing a first solid material comprising activated carbon and at least one carburized transition metal and a second solid material comprising at least one halogen component and alumina are disclosed. The thus-obtained catalyst system is employed as a catalyst in the isomerization of a hydrocarbon feedstock comprising saturated hydrocarbons.

Abstract: An improved zeolite catalyst containing an acid-treated zeolite, a boron component and a zinc component manufactured by a novel method having certain process steps necessary for providing the improved zeolite catalyst. The process steps include a first steam treatment of an acid-treated zeolite, followed by incorporation of such zeolite with a boron component and a zinc component, followed by a second steam treatment. Processes are also disclosed for using the improved zeolite catalyst in the conversion of hydrocarbons, preferably non-aromatic hydrocarbons, to lower olefins (such as ethylene and propylene) and aromatic hydrocarbons (such as benzene, toluene, and xylene).

Abstract: A composition, a process for producing the composition, and a hydrotreating process are disclosed. The composition comprises a zeolite having incorporated therein a promoter comprising at least two carburized metals. The composition can be produced by incorporating at least two metal compounds into the zeolite followed by thermal treatment of the resulting zeolite with a hydrocarbon, preferably in a reducing atmosphere. The hydrotreating process comprises contacting a hydrocarbon-containing fluid with the composition under a condition sufficient to effect the reduction of sulfur content in the hydrocarbon-containing fluid.

Abstract: An improved zeolite based catalyst comprising a mixture of a zeolite and a binder treated with boron trichloride and prepared by a novel method including exposing a mixture of a zeolite material and a binder to gaseous boron trichloride under suitable process conditions.

Abstract: A nitrided calcined modified zeolite composition having incorporated therein a molybdenum promoter and a co-promoter. A carburized nitrided calcined modified zeolite composition having incorporated therein a molybdenum promoter and a co-promoter. Producing the composition by incorporating a molybdenum promoter compound and a co-promoter compound into the zeolite followed by thermal treatment of the resulting zeolite with a nitriding agent and, optionally, further thermally treating the resulting zeolite with a hydrocarbon, preferably in the presence of hydrogen. A hydrotreating process that contacts a hydrocarbon-containing fluid with the nitrided, optionally carburized, calcined modified zeolite composition under a condition sufficient to effect the reduction of sulfur content in the hydrocarbon-containing fluid.

Abstract: A catalyst system comprising alumina, at least one carburized transition metal, and at least one halogen component, and a method of preparing such catalyst system which comprises incorporating at least one transition metal compound into alumina thereby forming a transition metal-alumina compound; carburizing the transition metal-alumina compound thereby forming a carburized transition metal-alumina compound; and incorporating at least one halogen component into the carburized transition metal-alumina compound, are disclosed. The thus-obtained catalyst system is employed as a catalyst in the isomerization of a hydrocarbon feedstock comprising saturated hydrocarbons.

Abstract: A process for producing catalyst compositions for converting a cracked gasoline feedstock to a product comprising incremental aromatics and lower olefins. The catalyst compositions produced thereby. A process for converting a cracked gasoline feedstock to a product comprising incremental aromatics and lower olefins.

Abstract: A process for desulfurizing and enhancing the octane of cracked gasoline by first aromatizing the cracked gasoline and, second, hydrodesulfurizing the resulting intermediate product stream.

Abstract: A dehydrogenation catalyst is produced by a process comprising the steps of: mixing an L-zeolite, chromium(VI) oxide, a binder, and an acid to form a mixture; and calcining the mixture at a temperature of about 200-800.degree. C. A paraffin having 2-7 carbon atoms per molecule can be contacted with the above-described catalyst under dehydrogenation conditions to produce olefins having the same number of carbon atoms per molecule as the paraffin.

Abstract: A catalyst composition, a process for producing the composition, and a hydrotreating process for converting a hydrocarbon stream such as, for example, gasoline, to olefins and C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The catalyst composition comprises a zeolite, a clay, and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a clay and a promoter under a condition sufficient to bind the clay to the zeolite to produce a clay-bound zeolite; and (2) heating the clay-bound zeolite to produce a modified zeolite. The hydrotreating process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to an olefin and a C.sub.6 to C.sub.8 aromatic hydrocarbon.

Abstract: An improved zeolite catalyst containing a zeolite and a zinc component manufactured by a novel method having certain process steps necessary for providing the improved zeolite catalyst. The process steps include incorporation of a zinc component with such zeolite followed by a steam treatment. An acid treatment can be conducted after the steam treatment. Processes are also disclosed for using the improved zeolite catalyst in the conversion of hydrocarbons, preferably non-aromatic hydrocarbons, to lower olefins (such as ethylene, propylene, and butene) and aromatic hydrocarbons (such as benzene, toluene, and xylene).

Abstract: A composition is prepared by a method which comprises mixing a first solid material comprising a platinum group metal, a rhenium component, a porous carrier material and, optionally, a halogen component and a second solid material comprising silica and bismuth. The thus-obtained composition is employed as a catalyst in the conversion of hydrocarbons to aromatics.In an alternate embodiment, hydrocarbons are converted to aromatics by sequentially contacting the hydrocarbons with the first solid material and then the second solid material.

Abstract: A novel composition including either a zeolite or an acid leached zeolite containing boron, zinc and phosphorus, used in the conversion of hydrocarbons. The novel composition is prepared by a novel method including incorporating into a zeolite or an acid treated zeolite material, preferably by use of a liquid solution, a zinc component, a boron component, and a phosphorus component.

Abstract: A process to produce a composition is provided. Said process comprises: contacting a zeolite component, a silicon component, a Group 14 metal component, and a phosphorus component together to form a first mixture; treating said first mixture to form a second mixture; contacting said second mixture with a binder component to form a third mixture; agglomerating said third mixture to form a fourth mixture; and treating said fourth mixture to form said composition.

Abstract: A novel zeolite catalyst composition comprising a mixture of a zeolite, a binder, and a zinc borate compound wherein such mixture is calcined or treated with steam. Preferably, the zeolite has not been treated with an acid. Also provided is a process of making such composition, a product by such process, and the use thereof in the conversion of a hydrocarbon-containing fluid such as a gasoline-boiling range fluid or coker naphtha. Use of such zeolite in the conversion of a hydrocarbon-containing fluid also includes pre-treating such hydrocarbon-containing fluid with a nitrogen removal medium such as ion-exchange resin.

Abstract: A catalyst composition, a process for producing the composition, and a hydrotreating process for converting a hydrocarbon stream such as, for example, gasoline, to olefins and C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The catalyst composition comprises a zeolite and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a promoter under a condition sufficient to incorporate the zeolite with the promoter to produce a first promoted zeolite; (2) incorporating the first promoted zeolite with a second promoter to produce a second promoted zeolite; and (3) heating the second promoted zeolite. The hydrotreating process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to an olefin and a C.sub.6 to C.sub.8 aromatic hydrocarbon.

Abstract: A catalyst composition and a hydrocarbon conversion process are disclosed. The composition comprises a zeolite and a Group VIII metal. The process comprises contacting a fluid which comprises a hydrocarbon such as fuel oil and optionally a sulfur compound with the catalyst composition under a condition sufficient to effect the conversion of the hydrocarbon to benzene, toluene, a xylene, or combinations thereof. Also disclosed is a process for producing the catalyst composition which comprises contacting a zeolite with a Group VIII compound followed by heating the resulting Group VIII compound-containing zeolite under a reducing atmosphere.

Abstract: A catalyst, method for preparing the catalyst, and method for using the catalyst having improved para-selectivity in the conversion of alkyl-substituted benzene to para-dialkyl-substituted benzene. The catalyst being prepared by calcining a starting zeolite material, selectivating the calcined zeolite using a silicon-containing selectivating agent, physically mixing the calcined and selectivated zeolite with a binder, shaping the resulting zeolitic physical blend into a form suitable for use in a hydrocarbon conversion process, selectivating the shaped zeolitic physical blend using a silicon-containing selectivating agent, and calcining the selectivated shaped zeolitic physical blend.