Abstract: Large pore size zeolites produced with organic cations in the synthesis mixture are synthesized with high silica:alumina ratios by terminating the crystallization when the product is partly crystalline, preferably 30% to 90 % crystalline by X-ray diffraction measurement. The method is particularly useful with zeolite beta to produce a partly crystalline product with higher silica:alumina ratio by direct synthesis.

Abstract: A process for producing lubricant oils of low pour point and high viscosity index by first carrying out a partial dewaxing of a lubricant base stock in an initial catalytic dewaxing operation, followed by a selective dewaxing step. The initial catalytic dewaxing step is carried out using a large pore, high silica zeolite dewaxing catalyst such as high silica Y or zeolite beta which dewaxes by isomerizing the waxy components of the base stock to less waxy brance chain isoparaffins but the severity of the operation is controlled so as to effect only a partial removal of the waxy components. Further removal of the waxy components is effected during the subsequent dewaxing step which is selective for the removal of the more waxy n-paraffin components, leaving the branched chain isoparaffins which contribute to a high VI in the product. The selective dewaxing step may be either a solvent, e.g. MEK dewaxing operation or a catalytic dewaxing using a highly shape selective zeolite such as ZSM-22 or ZSM-23.

Abstract: A process is disclosed for improving the Viscosity Index of a hydrocarbon lubricating oil comprising the steps of providing a flow reactor having separate first and second inlet ports for the separate co-injection of lubricating oil and an organic peroxide, charging said lubricating oil and said organic peroxide of said flow reactor through said first and second inlet ports respectively, controlling the relative flowrates of said lubricating oil and organic peroxide reactants together with the total volumetric flowrate through said flow reactor to maintain a flow regime which favors diffusional mixing between said organic peroxide and said lubricating oil, and maintaining said organic peroxide and said lubricating oil under conversion conditions including temperatures of between about 50.degree. and 300.degree. C. and pressure sufficient to maintain said lubricating oil and said organic peroxide substantially in the liquid phase.

Abstract: Relatively long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively long chain alkylating agent under alkylation reaction conditions in the pressure of a layered material as an alkylation catalyst. The layered material contains titanate in the layers and oxide pillars separating the layers. The layers also contain vacancies and/or metals incorporated therein.

Abstract: Lubricants of improved characteristics are produced by carrying out a solvent extraction to remove aromatic components after solvent or catalytic dewaxing. Aromatic extraction solvents such as phenol, furfural or N-methyl pyrrolidone may be used. The process is particularly useful with wax-derived lubricants produced by the hydroisomerization of a petroleum wax which has then been dewaxed.

Abstract: An integrated refining scheme for hydroprocessing high boiling fractions such as gas oil and catalytically cracked cycle oils to produce premium quality distillates, especially jet fuels and naphthas suitable for reforming into high octane gasoline. In addition, unconverted, high boiling fractions suitable for processing by conventional refining techniques into high quality, low pour point lube base stocks are obtained. The integrated hydroprocessing comprises a first stage hydrocracking step employing an aromatic selective hydrocracking catalyst based on a large pore size acidic component such as amorphous alumina or silica alumina or a large pore size zeolite such as zeolite X or zeolite Y. The hydrocracking may be operated either in a naphtha directing mode under conditions of moderate to high severity or under conditions of low to moderate severity to produce a relatively higher proportion of product boiling in the middle distillate range.

Abstract: A method for reactivating noble metal-containing zeolites containing sulfur oxide poisoned noble metal such as oxygen regenerated platinum zeolite beta catalysts, by contacting the catalyst with an acidic aqueous solution having a pH below about 7. The solution contains a Bronsted acid compound having a dissociation constant ranging from about 1.times.10.sup.-14 to about 2.times.10.sup.-1.

Abstract: An integrated refining scheme for hydroprocessing high boiling fractions such as gas oil and catalytically cracked cycle oils to produce premium quality distillates, especially jet fuels and naphthas suitable for reforming into high octane gasoline. In addition, unconverted, high boiling fractions suitable for processing by conventional refining techniques into high quality, low pour point lube base stocks are obtained. The integrated hydroprocessing comprises a first stage hydrocracking step employing an aromatic selective hydrocracking catalyst based on a large pore size acidic component such as amorphous alumina or silica alumina or a large pore size zeolite such as zeolite X or zeolite Y. The hydrocracking may be operated either in a naphtha directing mode under conditions of moderate to high severity or under conditions of low to moderate severity to produce a relatively higher proportion of product boiling in the middle distillate range.

Abstract: A process is described for regenerating a coke and poison deactivated noble metal-containing zeolite catalyst material. The activity of the catalyst after oxygen regeneration can be improved by treating the oxidized catalyst at temperatures from 100.degree. to 250.degree. C. (212.degree.-482.degree. F.) or lower, preferably 100.degree. to 200.degree. C. (212.degree.-392.degree. F.), or most preferably 150.degree. to 200.degree. C. (302.degree.-392.degree. F.), in a reducing atmosphere, as opposed to higher conventional reducing temperatures. The process permits catalyst reactivation by removing coke and other poisons, such as nitrogen, from the catalyst while avoiding excess agglomeration of the noble metals thereon.

Abstract: A process is described which improves the performance of cyclic dewaxing/regeneration processes using a catalyst comprising palladium and a zeolite having the structure of Zeolite Beta. The cyclic process includes regenerating the catalyst by oxidation alone or combinations of oxidation and reduction to substantially restore catalyst activity.

Abstract: A method for reactivating noble metal-containing zeolites containing sulfur oxide poisoned noble metal such as oxygen regenerated platinum zeolite beta catalysts, by contacting the catalyst with an acidic aqueous solution having a pH below about 7. The solution contains a Bronsted acid compound having a dissociation constant ranging from about 1.times.10.sup.-14 to about 2.times.10.sup.-1.

Abstract: A process is described for rejuvenation of a deactivated highly siliceous noble metal-containing zeolite catalyst having a framework silica to alumina ratio of at least about 20 which contains agglomerated noble metal in its deactivated state. The process comprises redispersing the noble metals associated with the deactivated catalyst by contacting the catalyst with a stream of inert gas containing molecular chlorine, water and optionally, oxygen, a temperatures ranging from about 150.degree. to about 450.degree. C., a partial pressure of chlorine of from about 6 to about 15 Torr and a ratio of partial pressure of water to partial pressure of chlorine of from about 0.01 to about 2 for a period of time sufficient to achieve redispersion; purging said catalyst with an inert gas; and reducing said purged catalyst in a stream of hydrogen at a temperature ranging from about 140.degree. C. to 550.degree. C.

Abstract: A coke-deactivated noble metal-containing catalyst is sulfided with a sulfiding agent, e.g., H.sub.2 S in H.sub.2, then coke is burned from the sulfided catalyst by contacting the catalyst with oxygen, optionally in the presence of sulfur dioxide, and then the catalyst is reduced with a reducing agent, e.g., H.sub.2. The process permits burning off coke while avoiding excessive agglomeration of the noble metals on the catalyst.

Abstract: A process is described for rejuvenation of a deactivated highly siliceous noble metal-containing zeolite catalyst which contains agglomerated noble metals. The process comprises initially reducing the deactivated catalyst in hydrogen, pretreating the thus reduced catalyst with an inert gas stream containing about 0.001 to 10 weight percent hydrogen chloride, redispersing the noble metal with an inert gas stream containing about 0.001 to 10 weight percent Cl in the form of Cl.sub.2 or Cl-containing organic material, and subsequently reducing the catalyst. The Cl-treatments may optionally occur in the presence of oxygen or sources of oxygen.

Abstract: A method of incorporating metals onto a crystalline aluminosilicate zeolite support comprises first depositing a metal which forms bonds with the zeolite and subsequently depositing a catalytically active metal into the zeolite which becomes associated with the first metal. The catalytically active metals may be introduced by decomposition of an organometallic complex which contains pi-electron donating ligands.

Abstract: A process for dewaxing a hydrocarbon feedstock with a relatively high pour point and containing paraffins selected from the group of normal paraffins and slightly branched paraffins and sulfur and nitrogen compounds which comprises subjecting said oil to hydrotreating in a hydrotreating zone operated at hydrotreating conditions sufficient to remove at least a portion of said sulfur and nitrogen compounds and subjecting said hydrotreated oil to catalytic dewaxing by contacting said oil with a catalyst comprising zeolite beta having a silica/alumina ratio of at least 30:1 and a hydrogenation/dehydrogenation component under isomerization conditions.

Abstract: The high boiling fraction of Fischer-Tropsch synthesis is upgraded by contact with a catalyst comprising a high-silica, large pore zeolite and a hydrogenation component. The products are a distillate fraction characterized by low sulfur and nitrogen content, high isoparaffin content and low pour point and a lube fraction characterized by its high viscosity index and low pour point.

Abstract: A method of incorporating metals onto a crystalline aluminosilicate zeolite support comprises first depositing a metal which forms bonds with the zeolite and subsequently depositing a catalytically active metal into the zeolite which becomes associated with the first metal. Both metals may be introduced by decomposition of organometallic complexes such as allyl complexes.

Abstract: A process for the conversion of olefins to distillate range hydrocarbons comprising contacting olefins with large pore zeolites.