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 C6 to C8 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 C6 to C8 aromatic hydrocarbon.

Abstract: A process in which a hydrocarbon feedstock containing non-aromatics is passed consecutively through a catalyst arrangement of two catalyst compositions, (1) a steam treated zinc-promoted zeolite and (2) a zeolite that has been subjected to a heat treatment, under hydrocarbon conversion conditions to yield a product containing lower olefins and BTX. An arrangement of two catalyst compositions, (1) a steam treated zinc-promoted zeolite and (2) a zeolite that has been subjected to a heat treatment, for consecutive contact with a hydrocarbon feedstock.

Abstract: A catalyst composition and process for preparing such catalyst composition which can be useful in contacting a hydrocarbon-containing fluid which contains a highly unsaturated hydrocarbon such as 1,3-butadiene, in the presence of hydrogen, with such catalyst composition in a hydrogenation zone under a hydrogenation condition effective to hydrogenate such highly unsaturated hydrocarbon to a less unsaturated hydrocarbon such as n-butene is disclosed. Such process for preparing a catalyst composition includes (1) combining a zeolite, a Group VIB metal, and an inorganic support to form a modified zeolite; (2) calcining such modified zeolite under a calcining condition to produce a calcined, modified zeolite; and (3) contacting such calcined, modified zeolite with a carburizing agent under a carburizing condition to provide such catalyst composition.

Abstract: A composition, a process for producing the composition, and a hydrocarbon conversion process for converting a hydrocarbon stream such as, for example, gasoline, to olefins and C6 to C8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The composition comprises a silylated catalyst which comprises a zeolite, a clay or silica, and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a clay or silica and a promoter under a condition sufficient to bind the clay to the zeolite to produce a clay-bound zeolite; (2) heating the clay-bound zeolite to produce a modified zeolite; and (3) silylating the modified zeolite with a silylating agent. The hydrocarbon conversion 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 C6 to C8 aromatic hydrocarbon.

Abstract: A hydrocarbon conversion process in which the rate of coke formation is reduced without a significant sacrifice in light olefin and BTX yield by the use of a silylated, stabilized metal promoted zeolite catalyst. Another embodiment includes a novel silylated spinel/zeolite catalyst. Another embodiment includes a process for producing a zinc or gallium promoted zeolite in which the promoter is stabilized by a high temperature water vapor treatment in the presence of a metal oxide such as alumina and thereafter the stabilized catalyst precursor is calcined and silylated.

Abstract: A novel high stability catalyst composition comprising a mixture of zeolite and zinc spinel that has been treated with a reducing gas under high temperature conditions, a method of making such high stability catalyst, and the use thereof for converting paraffin hydrocarbons to olefins and aromatics.

Abstract: A process in which a hydrocarbon feedstock containing n-butane is selectively dehydrogenated to a product containing butenes; a catalyst suitable for the selective dehydrogenation of a feedstock containing n-butane to provide a product containing butenes and a method for producing a catalyst suitable for the selective dehydrogenation of a feedstock containing n-butane to provide a product containing butenes are provided.

Abstract: A catalyst composition suitable for the conversion of n-butane to butenes. The same catalyst composition that with chlorination is further suitable, when used in the conversion of n-butane, for the production of an increased amount of BTX (benzene-toluene-xylene) and greater selectivity to the production of isobutylenes than attained with the unchlorinated catalyst. A process for the preparation of catalyst compositions suitable for the conversion of n-butane. Use of the catalyst compositions in processes for the conversion of n-butane.

Abstract: A catalyst composition suitable for the conversion of n-butane to butenes. The same catalyst composition that with chlorination is further suitable, when used in the conversion of n-butane, for the production of an increased amount of BTX (benzene-toluene-xylene) and greater selectivity to the production of isobutylenes than attained with the unchlorinated catalyst. A process for the preparation of catalyst compositions suitable for the conversion of n-butane. Use of the catalyst compositions in processes for the conversion of n-butane.

Abstract: A catalyst composition suitable for the conversion of n-butane to butenes. The same catalyst composition that with chlorination is further suitable, when used in the conversion of n-butane, for the production of an increased amount of BTX (benzene-toluene-xylene) and greater selectivity to the production of isobutylenes than attained with the unchlorinated catalyst. A process for the preparation of catalyst compositions suitable for the conversion of n-butane. Use of the catalyst compositions in processes for the conversion of n-butane.

Abstract: A catalyst composition and a process for using of the catalyst composition in a hydrocarbon conversion process are disclosed. The composition comprises an inorganic support, a Group VA metal or metal oxide, and optionally a Group IVA metal or metal oxide and a Group VIII metal or metal oxide. The process comprises contacting a fluid which comprises at least one saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of the hydrocarbon to an olefin. Also disclosed is a process for producing the catalyst composition.

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: An improved process and novel catalyst for upgrading catalytically cracked liquid hydrocarbons whereby the hydrodesulfurization and liquid yield of the hydrocarbons are enhanced while the octane number thereof is substantially maintained. The process basically comprises contacting the hydrocarbons with the catalyst composition which is comprised of a sulfided, molybdenum carbide and zinc hexaborate promoted, binder bound zeolite in the presence of hydrogen and under conditions sufficient to effect said upgrading.

Abstract: A catalyst composition containing a sulfided mixture of a zinc spinel, a zeolite, alumina, cobalt and molybdenum, and a method of preparing such catalyst composition, are disclosed. The thus-obtained catalyst composition is employed as a catalyst in the hydrodesulfurization of a hydrocarbon feedstock containing gasoline.

Abstract: A catalyst composition, a process for producing the composition, and a hydrocarbon conversion 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 promoter and optionally a binder. The process for producing the composition comprises the steps: (1) combining a zeolite with a promoter under a condition sufficient to produce a modified zeolite; and (2) steaming the modified zeolite. The hydrocarbon conversion 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 suitable for the conversion of n-butane to butenes. The same catalyst composition that with chlorination is further suitable, when used in the conversion of n-butane, for the production of an increased amount of BTX (benzene-toluene-xylene) and greater selectivity to the production of isobutylenes than attained with the unchlorinated catalyst. A process for the preparation of catalyst compositions suitable for the conversion of n-butane. Use of the catalyst compositions in processes for the conversion of n-butane.

Abstract: A catalyst composition and a process for hydrodealkylating C.sub.9 + aromatic compounds such as, for example, trimethylbenzenes, to C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The composition comprises an alumina and a silica wherein the weight ratio of aluminum to silicon is in the range of from about 0.005:1 to about 0.25:1. The process comprises contacting, in the presence of the catalyst composition, a fluid which comprises a C.sub.9 + aromatic compound with a hydrogen-containing fluid 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; and the C.sub.9 + aromatic compound contains at least 9 carbon atoms.

Abstract: A catalyst, method for preparing the catalyst, and method for using the catalyst having improved conversion and/or selectivity in the dehydrogenation of hydrocarbons. The catalyst being prepared by modifying and impregnating a mazzite zeolite. Modification of the original mazzite zeolite may include steps for ion-exchanging, dealuminating, physically mixing with chromic oxide, shaping, and calcining. Once modified, the mazzite zeolite may be impregnated with at least one metal selected from the group consisting of chromium, molybdenum, tungsten and oxides of these metals.

Abstract: A composition, a process for producing the composition, and a hydrocarbon conversion 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 composition comprises a silylated catalyst which comprises a zeolite, a clay or silica, and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a clay or silica and a promoter under a condition sufficient to bind the clay to the zeolite to produce a clay-bound zeolite; (2) heating the clay-bound zeolite to produce a modified zeolite; and (3) silylating the modified zeolite with a silylating agent. The hydrocarbon conversion 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, a process for producing the catalyst composition, and a hydroconversion process for converting a fluid stream comprising at least one saturated hydrocarbon to C.sub.6 to C.sub.8 aromatic hydrocarbons such as benzene, toluene, and xylenes are disclosed. The catalyst composition comprises a zeolite and a promoter. The process for producing the composition comprises the steps of: (1) combining a zeolite with a complexing ligand and a promoter compound under a condition sufficient to produce a modified zeolite; and (2) heating the modified zeolite to produce a promoted zeolite. The hydroconversion process comprises contacting a fluid stream with the catalyst composition under a condition sufficient to effect the conversion of a saturated hydrocarbon to a C.sub.6 to C.sub.8 aromatic hydrocarbon.