Abstract: Aromatization of non-aromatics is carried out by contacting with a titanosilicate having the structure of zeolite beta which contains noble metal.

Abstract: The present invention includes a process and catalyst composition for paraffinic isomerization of a hydrocarbon feedstock which has a paraffin content having no more than 20 carbon atoms per molecule. The feedstock is contacted with a crystalline aluminosilicate zeolite catalyst having pore openings defined by: (1) a ratio of sorption of n-hexane to o-xylene, on a volume percent basis, of greater than about 3, which sorption is determined at a P/P.sub.o of 0.1 and at a temperature of 50.degree. C. for n-hexane and 80.degree. C. for o-xylene and (2) by the ability of selectively cracking 3-methylpentane (3MP) in preference to the doubly branched 2,3-dimethylbutane (DMB) at 1000.degree. F. and 1 atmosphere pressure from a 1/1/1 weight ratio mixture of n-hexane/3-methyl-pentane/2,3-dimethylbutane, with the ratio of rate constants k.sub.3MP/ k.sub.DMB determined at a temperature of 1000.degree. F. being in excess of about 2, e.g.

Abstract: The present invention is a catalyst composition and method for dewaxing a wax-containing hydrocarbon feedstock which includes a zeolite characterized by a silica-to-alumina ratio from about 12 to about 200, a Constraint Index of from about 1 to about 12, and an alpha value of not more than about 50, in combination with a Group VIII metal hydrogenation-dehydrogenation component.

Abstract: The catalytic properties of a metal-containing shape selective crystalline silicate zeolite are significantly improved by converting said metal to an intermetallic compound. Thus, for example, zeolite beta containing the intermetallic component platinum zeolite demonstrates improved catalytic properties for dewaxing a hydrocarbon feedstock compared to zeolite beta containing platinum metal alone.

Abstract: The acidity of a zeolite catalyst is reduced by calcination in an essentially water-free atmosphere at temperatures above 700.degree. C., preferably from 725.degree. to 800.degree. C., to reduce the alpha value to less than about 10 percent of its original value. The low acidity catalysts produced in this way may be used for conversions requiring low acidity, shape selective catalysis, including dewaxing. The calcined, low acidity catalysts exhibit improved dewaxing activity.

Abstract: A process is described for preparing a binder-free Zeolite Beta containing catalyst which has a highly dispersed noble metal incorporated into the framework. The process comprises steaming Zeolite Beta, followed by noble metal incorporation and calcination. The present invention is also directed to an improved calcination process.

Abstract: A method for preparing low acidity alumina bound zeolites containing tetrahedral boron, gallium, indium and/or thallium which comprises ammonium-exchanging an organic-sorbed zeolite followed by calcination.

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: This invention provides a novel hydrocracking catalyst composition that contains Zeolite Beta having a framework boron content, a solid source of alumina, and a hydrogenation component. It further provides a low-pressure hydrocracking process that uses such composition.

Abstract: An improved method which provides for an extended cycle length in catalytic lube dewaxing of residual lube oil feedstocks and easier catalyst regeneration. The method may incorporate catalytically dewaxing a feedstock in a fixed bed reactor with or without product recycle, or a series of reactors with interreactor separation of vapors from liquids. Improved performance is achieved by operating the reactor at a temperature between about 490.degree. and about 620.degree. F., employing a high activity crystalline zeolite catalyst having an alpha value between about 50 and about 900 based on the zeolite and a space velocity sufficiently low to produce a dewaxed effluent of desired pour point and to maintain an average catalyst aging rate of less than about 2.degree. F. per day. This relatively low temperature operation allows catalyst performance to be restored by simple hydrogen reactivation.

Abstract: Heavy oils are simultaneously subjected to cracking and dewaxing in the absence of added hydrogen using a catalyst comprising Zeolite Beta and an X or Y or other faujasite zeolite. The process is able to effect a bulk conversion of the oil, while, at the same time, yielding a higher octane gasoline, increased yields of C.sub.3 and C.sub.4 olefins, and a low pour point distillate product.

Abstract: Dewaxing a waxy feedstock is achieved by submerging the dewaxing catalyst bed in the waxy feedstock and removing gaseous products out of contact with the catalyst by agitating the bed to prevent further cracking or polymerization. Catalyst aging during dewaxing is significantly reduced by operating the dewaxing reactor within a narrow low temperature range.

Abstract: A novel process is disclosed for the production of high boiling jet fuels which comprises contacting a chargestock with an end boiling point of about 750.degree. F. with ZSM-22 under carefully controlled conditions of temperature and pressure and blending the 330.degree. F. plus fraction with a conventional jet fuel in order to obtain a product having acceptable jet fuel properties and having a high boiling range.

Abstract: There is disclosed an improved dewaxing process which will operate for longer periods of time involving contacting a feedstock having a 50 volume percent boiling point greater than 900.degree. F. with a crystalline aluminosilicate zeolite having a Constraint Index of from 1 to 12 and a silica-to-alumina ratio of at least 12. The crystalline aluminosilicate zeolite is composited with an inorganic oxide, such as alumina. The composite also containing a hydrogenation metal and the catalyst composite has a maximum diffusion distance of less than 0.025 inch.

Abstract: An ethanol fermentation process in which an aqueous solution of fermentable sugar is converted by an ethanol-producing microorganism such as a yeast to a dilute aqueous solution of ethanol with the ethanol being present in the solution at a concentration which does not exceed a predetermined maximum level, wherein ethanol present in the solution is selectively sorbed within a crystalline aluminosilicate zeolite so that the non-sorbed ethanol present in the solution does not exceed the predetermined maximum level of concentration therein, and thereafter exposing the ethanol-containing zeolite to ethanol conversion conditions to effect conversion of the ethanol to hydrocarbons.

Abstract: A process for dewaxing lube basestocks over low acidity dewaxing catalysts can be undertaken at steady state temperature. In a preferred embodiment, the feedstock is subjected to catalytic dewaxing with concommident removal of gaseous product. When high boiling feed with end points above 1000.degree. F., such as heavy neutrals and bright stocks, and waxy feeds containing more than 20 wt % wax are subject of the process, it is preferred to use continuously stirred tank reactors.

Abstract: A process for removing nitrogen chemically bound to a zeolite component of a catalytic composition, used in hydroprocessing feedstocks containing nitrogen precursors, including contacting the hydrogen treated used catalyst composition with polar solvents, preferably in the gaseous state, at pressures practically no greater than 100 Torr.

Abstract: A catalytic cracking process is described in which methanol is a coreactant with gas oil in combination with a small amount (catalyst/oil 0.01) of a dispersed, very fine, and highly active catalyst powder, such as ZSM-5B. The methanol is preferably admixed with the catalyst before admixture with the oil in order to protect the catalyst from adsorption of poisonous compounds (e.g., nitrogenous compounds) during the initial stages of the reaction, particularly if the methanol is insoluble in a non-polar hydrocarbon feed. The premixed materials are fed into a riser reactor. The residence time in the reactor is 6-15 seconds. Preferably, the catalyst is not regenerated. The quantity of methanol is maintained so that its exothermic reaction is approximately heat balanced with the endothermic catalytic cracking reaction.

Abstract: A method for preparing hydroisomerization zeolite catalysts containing a highly dispersed noble metal is described. The method includes mix mulling the zeolite, noble metal and binder into an extrudate and chemically treating the formed particles in order to achieve a high dispersion of noble metal on the catalyst.

Abstract: A hydroprocessing trickle reactor construction which will facilitate the catalytic dewaxing of liquid petroleum or lube feedstocks in a highly efficient and economical manner, particularly through the use of reactors employing stationary bed of a defined, shape-selective crystalline aluminosilicate zeolite catalyst, preferably ZSM-5. Pursuant to one embodiment of the hydroprocessing reactor, the latter is essentially constituted of a trickle bed reactor wherein a plurality of vertically tiered and staggered trays support the beds of catalyst material, such as the crystalline zeolite, and through which the liquid petroleum feedstock trickles downwardly from the upper end of the reactor, while hydrogen is concurrently injected into the catalyst on each of the trays. This causes the hydrogen to percolate through the catalyst bed and to contact and efficiently strip the downwardly trickling stream of liquid petroleum feedstock of low boiling conversion products or waxy components, such as naphtha.