Abstract: A process for making an improved zeolite catalyst composition comprising acid-treating a zeolite to provide an acid-treated zeolite, ion-exchanging the ions of such acid-treated zeolite with ions of zinc and at least one other metal in the presence of an ion-exchange medium, and then treating such acid-treated, ion-exchanged zeolite in a steam atmosphere. An improved zeolite catalyst composition made by such process is also disclosed. Processes are also disclosed for using the improved zeolite catalyst composition, made by the novel process, 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 catalyst composition and a process for hydrodealkylating a C9+ aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises an alumina, a metal oxide, a phosphorus oxide and optionally, an acid site modifier selected from the group consisting of silicon oxides, sulfur oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, molybdenum 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 C9+ aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C9+ aromatic compound to a C6 to C8 aromatic hydrocarbon.

Abstract: A catalyst system comprising a first solid material comprising a silicoaluminophosphate and a second solid material comprising a zeolite and a compound containing zinc and a metal selected from the group consisting of Group IIIA and Group VIB, and a method of preparing such catalyst system, are disclosed. The thus-obtained catalyst system is employed as a catalyst in the conversion of at least a portion of a hydrocarbon feedstock comprising oxygenated hydrocarbons to aromatics (BTX), and, in particular, xylenes. In an alternate embodiment, a hydrocarbon feedstock comprising oxygenated hydrocarbons are converted to aromatics by sequentially contacting the hydrocarbon feedstock with the first solid material and then the second solid material.

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. A method for producing a catalyst suitable for the selective dehydrogenation of a feedstock containing n-butane to provide a product containing butenes.

Abstract: A catalyst system comprising a silicoaluminophosphate impregnated with a compound selected from the group consisting of phosphoric acid, boric acid, tributyltin acetate, and combinations of any two or more thereof, and a method of preparing such catalyst system, are disclosed. The thus-obtained catalyst system is employed as a catalyst in the conversion of a hydrocarbon feedstock comprising oxygenated hydrocarbons to olefins and/or ethers.

Abstract: A process is provided for upgrading an oligomerization product through catalytic hydrotreating resulting in a synthetic lube base oil with improved pour point and viscosity index. The upgrading process includes contacting the oligomerization product with a catalyst system, under conversion conditions, which include the presence of hydrogen and a temperature sufficient to promote selective/minor cracking, hydrogenation and isomerization. The catalyst system contains a ZSM-5 zeolite and a group VIII metal.

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 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 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. A method for producing a catalyst suitable for the selective dehydrogenation of a feedstock containing n-butane to provide a product containing butenes.

Abstract: A catalyst system comprising a first solid material comprising a silicoaluminophosphate and a second solid material comprising a zeolite and a compound containing zinc and a metal selected from the group consisting of Group IIIA and Group VIB, and a method of preparing such catalyst system, are disclosed. The thus-obtained catalyst system is employed as a catalyst in the conversion of at least a portion of a hydrocarbon feedstock comprising oxygenated hydrocarbons to aromatics (BTX), and, in particular, xylenes.

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 C6 to C8 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 C6 to C8 aromatic hydrocarbon.

Abstract: A catalyst composition comprising a cobalt compound, a molybdenum compound, and a SAPO molecular sieve is used to hydrodesulfurize a hydrocarbon feed containing organic sulfur compounds.

Abstract: A method of increasing total diluent conversion in a process for the conversion of cracked gasoline and a first diluent comprising iso-pentane to aromatics and light olefins by contacting the cracked gasoline, the first diluent and a second diluent comprising either propane or 1-hexene with a zeolite catalyst containing phosphorus. The zeolite catalyst comprises a calcined, acid-leached zeolite and phosphorus. Also described is a method of making such catalyst.

Abstract: A catalyst system comprising a first solid material comprising a silicoaluminophosphate and a second solid material comprising a zeolite and a compound containing zinc and a metal selected from the group consisting of Group IIIA and Group VIB, and a method of preparing such catalyst system, are disclosed. The thus-obtained catalyst system is employed as a catalyst in the conversion of at least a portion of a hydrocarbon feedstock comprising oxygenated hydrocarbons to aromatics (BTX), and, in particular, xylenes. In an alternate embodiment, a hydrocarbon feedstock comprising oxygenated hydrocarbons are converted to aromatics by sequentially contacting the hydrocarbon feedstock with the first solid material and then the second solid material.

Abstract: A catalyst composition and a process for hydrodealkylating a C9+ aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises an alumina, a metal oxide, and a coke suppressor selected from the group consisting of silicon oxides, phosphorus oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, molybdenum 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 C9+ aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C9+ aromatic compound to a C6 to C8 aromatic hydrocarbon.

Abstract: A hydrocarbon conversion process in which the rate of coke formation is reduced and aromatics and light olefins yield is increased by the use of an improved zeolite catalyst that comprises a silylated, zeolite material preferably treated with steam. Another embodiment includes the use of an improved zeolite catalyst that comprises silylated, acid treated zeolite material.

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 catalyst composition prepared by a method which comprises incorporating at least one transition metal into a calcined zeolite-silica material, calcining the resulting transition metal-incorporated calcined zeolite-silica material and contacting the resulting calcined transition metal-incorporated calcined zeolite-silica material with ammonium sulfide is disclosed. The thus-obtained catalyst composition is employed as a catalyst in the conversion of a hydrocarbon feedstock to at least one aromatic.

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. A method for producing a catalyst suitable for the selective dehydrogenation of a feedstock containing n-butane to provide a product containing butenes.

Abstract: A catalyst composition, a process for producing the composition and a hydrocarbon conversion process for converting a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite having incorporated therein a promoter comprising carbon and a metal or metal oxide. The composition can be produced by incorporating a metal compound into the zeolite followed by thermal treatment of the resulting zeolite with a hydrocarbon. The hydrocarbon conversion process comprises contacting a fluid which comprises a saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon.