Abstract: There is provided an aluminum-containing aluminosilicate zeolite corresponding to the substantially aluminum free silicate zeolite described in the Hinnenkamp et al U.S. Pat. No. 4,376,757. Also provided are methods for making this aluminosilicate zeolite and methods for the catalytic conversion of organic charges to desired products with this aluminosilicate zeolite.

Abstract: A process is disclosed for operating a refinery gas plant such as the unsaturated gas plant of a catalytic hydrocarbon conversion process that results in a reduction of the corrosive effect of acid gases on the gas plant vessels and equipment. The process comprises contacting acidic hydrocarbon feedstreams to an unsaturated gas plant separator zone with lean acid gas absorbing absorbent in an absorbtion zone comprising at least one liquid absorber bed and one vapor absorber bed. The liquid and vapor absorber beds are located upstream of the separator zone. The feedstreams to the gas plant comprise unstabilized, or wild, liquid gasoline and liquid and vapor output streams from the liquid-vapor separator for inter-stage wet gas compressor of the conversion process main fractionator. Accordingly, these feedstreams are deacidified before separation in the USGP deethanizer-absorber, sponge absorber, and debutanizer. This also eliminates the need for deacidification of the gas plant product stream.

Abstract: A waxy component-containing lubricating oil stock derived from the multi-stage catalytic oligomerization of a lower olefin such as propylene is subjected to selective catalytic hydrodewaxing in the presence of certain acidic zeolites, e.g., H-ZSM-23 and H-ZSM-35, preferably associated with a hydrogenation component such as platinum, palladium or zinc, to provide a high viscosity, low pour point lubricating oil product.

Abstract: This invention provides a fixed bed of nonuniformly sized grade catalyst particles for hydrocracking or hydrodesulfurization. The graded particles are arranged with the largest particles in either the upstream or the downstream portion of the bed. In either case, when compared with the conventional bed of uniformly sized particles, the graded bed of this invention shows enhanced hydrocarbon conversion activity for heavy oils over a useful range of conversion. Such catalyst bed is particularly useful in moderate hydrocracking operating at less than 1000 psig (7000 kPa) pressure.

Abstract: The benzene concentration in the gasoline pool of a petroleum refinery is decreased by alkylation of the benzene in a catalytic dewaxing reactor using the olefinic by-products from the dewaxing reaction as alkylating agents. The catalytic dewaxing is preferably carried out in the presence of an intermediate pore size zeolite such as ZSM-5 using a distillate or lube boiling range dewaxing feed. The benzene rich feed preferably contains less than about 2% C.sub.7+ aromatics in order to reduce alkylation of non-objectionable species in the reformate.

Abstract: The quality and yield of dewaxed, hydrotreated lube oil base stocks are improved by reducing the top temperature in the hydrotreated lube stripper so as to increase the proportion of heavy kerosene components in the lube oil base stock. The separation system provides for a two stage stripping of the lube oil fraction such that the kerosene fraction stripped from the lube product in the primary product stripper under vacuum is stripped in a second stage stripper at a higher pressure with recycle of the heavy kerosene fraction as a reflux stream to the primary vacuum stripper so that a product with improved viscosity index and flash point is separated in the primary stripper.

Abstract: High viscosity index, low pour point lubricants are produced by reacting an iso-paraffinic component, preferably with significant mono- and di-methyl chain branching, with an olefinic reactant in the presence of a free radical generator such as an organic peroxide, preferably ditertiary butyl peroxide. The isoparaffinic reactant is preferably obtained by the isomerization of a waxy feed such as slack wax over a zeolite beta isomerization catalyst, preferably Pt/zeolite beta. The olefinic reactant is preferably a distillate fraction produced by the oligomerization of low molecular weight olefins e.g., C.sub.3 to C.sub.5 olefins, produced by oligomerization over an intermediate pore size zeolite oligomerization catalyst such as ZSM-5.

Abstract: This invention relates to use of a new improved form of crystalline silicate identified as zeolite ZSM-11 as a catalyst component for organic compound, e.g. hydrocarbon compound, conversion.

Abstract: Perovskite related materials of high thermal stability and surface area which contain interspathic polymeric chalcogenides such as polymeric silica are prepared by ion exchanging a layered metal oxide, such as layered titanium oxide, with organic cation, to spread the layers apart. A compound such as tetraethylorthosilicate, capable of forming a polymeric oxide, is thereafter introduced between the layers. The resulting product is treated to form polymeric oxide, e.g. by hydrolysis, to produce the layered oxide material. The resulting product may be employed as catalyst material in the conversion of organic compounds.

Abstract: Pillared layered silicate compositions containing pillars of silica and metal oxides, e.g., alumina are prepared by contacting organic-swelled layered silicates, e.g. kenyaite-type materials, with a hydrolyzable silica precursor, e.g., tetraethylorthosilicate which forms silanol groups between the layers and contacting the resulting product with an aqueous solution containing inorganic metal salt and effecting hydrolysis of the silanol groups.

Abstract: A process for dispersing or dispersing relatively large crystallites of an agglomerated Group VIII noble metal species present on a porous inorganic support is disclosed. The process includes contacting the agglomerated noble metal species, e.g., palladium or platinum, present on the support, e.g., alumina, silica or a zeolite such as ZSM-5 from which at least a major portion of any extraneous matter such as coke or other residue has previously been removed, with nitric oxide (NO) alone or in admixture with a source of halogen such as Cl.sub.2 and thereafter removing sorbed nitrogen oxide(s) and halogen, if present. The thus treated metal-loaded catalyst demonstrates substantially increased benzene hydrogenation activity (BHA) compared to the same catalyst prior to treatment indicating significant dispersion/redispersion of the metal crystallites as smaller crystallites.

Abstract: A process and catalyst are disclosed for selectively oxidizing alkylaromatics, e.g., o-xylene, to oxygenated aromatics, e.g., phthalic anhydride. The catalyst of the process comprises a layered titanate which contains interspathic polymeric silica and a heavy metal element, e.g., vanadium.

Abstract: A method is disclosed for modifying an aluminosilicate-containing inorganic solid having a predetermined ion exchange capacity and containing an extractable silica by contacting, in the absence of added organic nitrogen or organic phosphorous compound and added activating metal oxide, the porous solid with liquid water at a pH of at least 6, at a temperature of up to 370.degree. C. for about 1 to 100 hours, and recovering a crystalline solid having an ion exchange capacity greater than the starting inorganic solid.

Abstract: Layered chalcogenide materials of high thermal stability and surface area which contain interspathic polymeric chalcogenides such as polymeric silica are prepared by ion exchanging a layered metal oxide, such as layered titanium oxide, with organic cation, to spread the layers apart. A compound such as tetraethylorthosilicate, capable of forming a polymeric oxide, is thereafter introduced between the layers. The resulting product is treated to form polymeric oxide, e.g. by hydrolysis, to produce the layered oxide material. The resulting product may be employed as catalyst material in the conversion of organic compounds.

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: This disclosure is concerned with the crystallization of ZSM-5 zeolites and, more particularly, is concerned with the preparation of high silica ZSM-5 zeolites having a silica-to-alumina ratio of greater than 70, up to and approaching infinity, by control of the pH so as to obtain rod-shaped crystals.

Abstract: Siliceous zeolites, particularly those of the ZSM-5 type having a crystal size of less than one micron have their activity enhanced for the conversion of alcohols and ethers to olefins by steaming.

Abstract: A process and catalyst are disclosed for selectively oxidizing alkylaromatics, e.g., o-xylene, to oxygenated aromatics, e.g., phthalic anhydride. The catalyst of the process comprises a layered titanate which contains interspathic polymeric silica and a heavy metal element, e.g., vanadium.

Abstract: This invention relates to an efficient process for shape-selective conversion of organic feedstock with a catalyst comprising a Clathrate Group tectosilicate such as ZSM-39 and a highly siliceous, shape selective zeolite such as ZSM-5. In one embodiment, a stabilized, dewaxed lube stock is prepared by catalytically dewaxing a hydrocrackate.

Abstract: A new crystalline zirconium phosphate composition and method for its synthesis are provided. The composition has ion exchange properties and is readily convertible to catalytically active material by thermal treatment.