Abstract: The invention pertains to a catalyst that consists of a substrate made of at least one matrix and at least one zeolite that is selected from the group composed of the zeolites ZSM-48, EU-11, and ZBM-30, whereby, at the level of the zeolite, at least one noble metal of Group VIII is deposited on said substrate. The noble metal is preferably located on the outer surfaces of the zeolite crystals, and more preferable at the mouths of pores. The invention also pertains to a process for preparing the catalyst and utilizing the catalyst to treat hydrocarbon feedstocks, and especially for improving their pour points.

Abstract: Method for producing hydrogen and a hydroprocessed product from a hydrocarbonaceous feedstock by subjecting it to a catalytic hydrocracking treatment using hydrogen which has been at least partly produced from hydrocracked feedstock and subjecting at least pan of the hydrocracked feedstock, after having subjected it to a separation treatment in the event that hydroprocessed product is to be recovered, to a treatment to produce hydrogen in a single operation which hydrogen is at least partly recovered as product.

Abstract: A process for cracking an olefin-rich hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising contacting a hydrocarbon feedstock containing olefins having a first composition of one or more olefinic components with a crystalline silicate catalyst to produce an effluent having a second composition of one or more olefinic components, the feedstock and the effluent having substantially the same olefin content by weight therein, the feedstock contacting the catalyst in the presence of hydrogen for enhancing the stability of the catalyst.

Abstract: In a hydrocracking unit, the flash gases from the high-pressure separator are fed to the bottom of an absorption zone where the entering gases are counter-currently contacted with a lean solvent. The lean solvent absorbs away the contained methane, ethane, propane, butanes and pentanes (C1+) from the contained hydrogen. The overhead gas stream from the absorption zone typically contains hydrogen at a purity of 90 to 98 mol %, or even higher, which is fed to the recycle gas stream to provide hydrogen purity in the range of 96 to 99 mol %, thereby providing an increase in the overall efficiency of the hydroprocessor unit. The process can also be employed with hydrotreating, hydrodesulfurization, hydrodenitrogenation and hydrodealkylation reactors.

Abstract: The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which the feed to be treated is brought into contact with a catalyst. The catalyst comprises at least one dioctahedral 2:1 phyllosilicate, preferably synthesised in a fluoride medium in the presence of the acid HF and/or a further source of fluoride anions, and preferably having an interplanar spacing of at least 20×10−10 m (2 nm) and comprising pillars based on at least one oxide of elements from groups IVB, VB, VIB, VIII, IB, IIB, IIA or IVA or any combination of these oxides, and preferably selected from the group SiO2, Al2O3, TiO2, ZrO2 and V2O5, or any combination of these latter. The catalyst further comprises at least one hydrodehydrogenating element in the metallic form. The process is carried out at a temperature in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and at an hourly space velocity in the range 0.

Abstract: A method for preparing a catalyst comprising a zeolite and a low acidity refractory oxide binder which is essentially free of alumina which method comprises: (a) preparing an extrudable mass comprising a substantially homogenous mixture of zeolite, water, a source of the low acidity refractory oxide binder present which comprises an acid sol, and an amine compound, (b) extruding the extrudable mass resulting from step (a), (c) drying the extrudate resulting from step (b); and, (d) calcining the dried extrudate resulting from step (c).

Abstract: This invention relates to an improved process for hydrocracking into a stage of hydrocarbon feedstocks, using in a first reaction zone a pretreatment catalyst that exhibits a low acidity according to a standard activity test and an amorphous acid catalyst for hydrocracking that is free of zeolite in a second reaction zone that is located downstream from the first.

Abstract: Cationic layered materials, a process for their preparation and their use in hydrocarbon conversion, purification, and synthesis processes, such as fluid catalytic cracking. Cationic layered materials are especially suitable for the reduction of SOx and NOx emissions and the reduction of the sulfur and nitrogen content in fuels like gasoline and diesel. The new preparation process avoids the use of metal salts and does not require the formation of anionic clay as an intermediate.

Abstract: A process for isomerization dewaxing of a hydrocarbon feed which includes contacting the hydrocarbon feed with a large pore size, small crystal size, crystalline molecular sieve and an intermediate pore size, small crystal size, crystalline molecular sieve to produce a dewaxed product with a reduced pour point and a reduced cloud point. In a preferred embodiment, the feed is contacted with the molecular sieves sequentially, first with the large pore sieve followed by the intermediate pore sieve.

Abstract: In a hydrocracking unit, the flash gases from the high-pressure separator are fed to the bottom of an absorption zone where the entering gases are counter-currently contacted with a lean solvent. The lean solvent absorbs away the contained methane, ethane, propane, butanes and pentanes (C1+) from the contained hydrogen. The overhead gas stream from the absorption zone typically contains hydrogen at a purity of 90 to 98 mol %, or even higher, which is fed to the recycle gas stream to provide hydrogen purity in the range of 96 to 99 mol %, thereby providing an increase in the overall efficiency of the hydroprocessor unit. The process can also be employed with hydrotreating, hydrodesulfurization, hydrodenitrogenation and hydrodealkylation reactors.

Abstract: The invention relates to a process for the catalytic dewaxing of a hydrocarbon feed containing waxy molecules by contacting the hydrocarbon feed under catalytic dewaxing conditions with a catalyst composition having metallosilicate crystallites, a binder and a hydrogenation component, wherein the weight ratio of the metallosilicate crystallites and the binder is between 5:95 and 35:65. The invention also relates to a catalyst composition having at least a low acidity refractory oxide binder, which binder is essentially free of aluminum, metallosilicate crystallites and a hydrogenation component, wherein the weight ratio of the metallosilicate crystallites and the binder is between 5:95 and 35:65.

Abstract: A catalyst support including a zeolite having an Al/Si atomic ratio of 0.01-0.1 and mesopores having a pore diameter in the range of 5-30 nm, and ultrafine particles composited to inside walls of the mesopores. The superfine particles are those of an oxide of a metal selected from Ti, Zr and Hf.

Abstract: Process for the preparation of a middle distillate having good properties at low temperatures, which can be used as fuel, starting from a mixture of substantially linear hidrocarbons, without sulfur and containing at least 20% of a high-boiling fraction having a distillation temperature exceeding 370° C., comprising, as single reactive step, a “hydrocracking” step on said mixture of linear hydrocarbons, at a temperature ranging from 250 to 450° C. and a total pressure of 0.5 to 15 MPa, in the presence of a supported catalyst comprising: (A) a carrier of an acid nature consisting of a calcined gel of silica-alumina amorphous to X-rays having a molar ratio between silica and alumina within the range of 30 and 500, a surface area within the range of 500 and 1000 m2/g, with a porosity within the range of 0.2 and 0.

Abstract: The present invention relates to stevensite or kerolite type trioctahedral phyllosilicates 2:1 containing fluorine, fluorinated in synthesis in an acid medium and modified post-synthesis to bring about Si/Al and/or Mg/Al substitutions which impart acid properties to the solid. These phyllosilicates may be incorporated in the composition of catalysts used to convert hydrocarbons, in particular for hydrocracking.

Abstract: The invention pertains to a carrier composition comprising (a) at least 30 wt % of a synthetic cracking component, based on the total weight of the carrier composition, which comprises oxidic compounds of one or more trivalent metallic elements, tetravalent metallic elements, and divalent metallic elements, said cracking component comprising elemental clay platelets with an average diameter of 1 &mgr;m or less and an average degree of stacking of 20 platelets per stack or less, and/or comprising a cogel with a saponite content CA of less than 60 %, in which the total of sodium and potassium amounts to less than 1 wt %, based on the total weight of the cogel, and (b) 1 −25 wt % of a zeolite Y, based on the total weight of the carrier composition, with a unit cell size below 24.35 å. The invention further pertains to a catalyst comprising said carrier composition and at least a hydrogenation metal, and a process for converting heavy feedstock into middle distillates using said catalyst.

Abstract: The present invention relates to a method for gas-solid contacting in a bubbling fluidized bed reactor by:

Abstract: The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which the feed to be treated is brought into contact with a catalyst comprising at least one dioctahedral 2:1 phyllosilicate, preferably synthesised in a fluoride medium in the presence of the acid HF and/or a further source of fluoride anions, and preferably wherein the interplanar spacing is at least 20×10−10 m (2 nm) and comprising pillars based on at least one oxide of elements from groups IVB, VB, VIB, VIII, IB, IIB, IIA or IVA or any combination of these oxides, preferably selected from the group formed by SiO2, Al2O3, TiO2, ZrO2 and V2O5, or any combination of these latter, and at least one hydrodehydrogenating element in the metallic form. The process is carried out at a temperature in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and at an hourly space velocity in the range 0.

Abstract: Molecular sieves comprising (1) phosphorus oxide; (2) a first oxide comprising an oxide of silicon, germanium or mixtures thereof; and (3) a second oxide comprising an oxide of aluminum, boron or mixtures thereof, said molecular sieve having a mole ratio of the first oxide to the second oxide of greater than 1, containing at least about 10 weight percent phosphorus oxide in the crystal framework, and having pores greater than 5 Å in diameter are useful as catalysts in hydrocarbon conversion reactions.

Abstract: Nitrogenous compounds especially bases such as ammonia vapor are used to control the operation of a hydrocracker or catalytic dewaxer. Catalyst activity and selectivity may be controlled by addition of the base to the feed, for example, to control the balance between isomerization and hydrocracking in an operation using a zeolite beta catalyst. Runaway conditions may be controlled by the addition of nitrogenous compounds to regulate the temperature profile within the reactor.

Abstract: The present invention relates to zeolithic materials having a characteristic X ray diffraction pattern, and its preparation method, characterized by the relatively low pH of the synthesis medium and the use of F− anions as mineralizing agent. The invention also claims the use of the obtained material in catalytic processes for the transformation of hydrocarbons and in oxidation process. The method comprises heating at 363-473° K a reaction mixture which contains a source of at least one tetravalent element T(IV), optionally a source of an element T(III), optionally H2O2, a structure director organic cation, a source of anions F− and water, the presence of alkaline cations is not necessary.

Abstract: A process for cracking an olefin-rich hydrocarbon feedstock which is selective towards propylene in the effluent, the process comprising contacting a hydrocarbon feedstock containing one or more olefinic components of C4 or greater with a crystalline silicate catalyst to produce an effluent having a second composition of one or more olefinic components of C3 or greater, the feedstock and the effluent having substantially the same olefin content by weight therein characterized in that ethylene is added to the feedstock before the feedstock contacts the catalyst.

Abstract: A heavy hydrocarbon is rendered pipelineable by hydroconverting the heavy hydrocarbon under conditions sufficient to obtain a product oil of lowered viscosity and an API gravity suitable for pipelining and thereafter adding a diluent modified hydrocarbon to the product oil in an amount sufficient to stabilize the product oil against asphaltene phase separation and when phase separated asphaltene is present to dissolve the phase separated asphaltenes.

Abstract: The invention concerns a hydrocracking process using a catalyst comprising at least one matrix, an IM-5 zeolite, at least one metal selected from the group formed by metals from group VIB and group VIII of the periodic table, optionally at least one element selected from the group formed by phosphorous, boron and silicon, and optionally at least one group VIIA and/or at least one group VIIB and/or at least one group VB element (in particular niobium). The invention also concerns a catalyst containing at least one matrix, an IM-5 zeolite, at least one metal from groups VIII and/or VIB and at least one promoter element which is boron and/or silicon. The catalyst can also contain at least one group VIIA element and/or at least one group VIIB element and/or at least one group VB element.

Abstract: A hydrotreating process is presented for both dewaxing the diesel fraction and reducing the aromatic content of kerosene fraction of a distillate boiling range feed stream. The feed stream is flashed to generate vapor and liquid phase streams. The portion which comprises most of the heavy diesel is passed into a dewaxing zone. The vapor-phase stream, preferably rich in kerosene and light diesel, is used to quench the effluent of the dewaxing zone before it is passed into a downstream aromatics hydrogenation zone. Depending on the composition of the feed to the process, a second flashing step performed in the presence of added hydrogen may be employed to produce the feed to the dewaxing zone. PNA's may be hydrogenated prior to recycling to a hydrocracking zone.

Abstract: The invention pertains to a catalyst at least comprising a hydrogenation metal component and a swelling synthetic clay consisting of elemental clay platelets, with the average diameter of the clay platelets not exceeding 1 micron and the average degree of stacking of the clay platelets not exceeding 20 platelets per stack. The catalyst is especially suitable for the hydroprocessing of hydrocarbon feeds, the term “hydroprocessing” encompassing all processes in which a hydrocarbon feed is treated with hydrogen. The clays which are suitable for use in the catalyst according to the invention may be prepared as described in Netherlands patent application No. 9401433.

Abstract: Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and are prepared from microemulsions containing surfactants.

Abstract: Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and may be prepared from single phase synthesis solutions or from microemulsions containing surfactants.

Abstract: The invention relates to a process for the sulfurization of hydroconversion catalysts, whereby said catalyst contains at least one element of group VIII of the periodic table and optionally an element of group VI, whereby said metal is present in the oxide state. Said process comprises at least one stage that is carried out in a hydrotreatment zone in the presence of at least one thionic compound and at least one nitrogenous compound. This process is carried out in such a way that before the final sulfurization temperature is reached, at least 130% of the stoichiometric amount of sulfur that is necessary for complete sulfurization of the catalyst is injected in said catalyst.

Abstract: A method for converting a polymer or oligomer derived from an ethylenically unsaturated monomer into alkanes or into a hydrocarbon fraction or a lower oligomer fraction by controlled hydrocracking, wherein the polymer or oligomer is exposed to a catalyst based on a metal hydride or an organometallic complex supported on a mineral carrier, the complex having at least one hydrocarbon ligand and optionally at least one hydride ligand, and the resulting mixture is reacted with hydrogen to cause catalytic hydrocracking of the polymer or oligomer. The polymer or oligomer is broken down into reclaimable products with a lower molecular weight for use, e.g., in the field of polymers, particularly controlled molecular weight polymers, fuels or lubricants.

Abstract: The nature of the process consists in that the low-grade organic substances are subject, at a temperature of 150.degree. C. to 700.degree. C. and at a pressure of 0.1 MPa to 2.5 MPa, to the action of a moving bed of solid particles of a substance which perform whirling motion, whereby the solid particles of a substance constituting the moving bed are set to whirling motion by intensive agitation.The device consists of a reaction chamber (1) with a rotation mechanism (2) which rotation mechanism (2), located rotably in the faces of the reaction chamber (1), consists of a shaft (3) to which vanes (5) are symetrically attached by means of driving discs (4). The vanes (5) may be arranged in 3 to 10 rows, and they may be provided with openings (5.1) or cut-outs (5.2) of various geometrical shapes, and they may be divided into individual segments (5.3). Also the driving discs (4) may be provided with openings (4.1) of various geometrical shapes.

Abstract: A process for converting hydrocarbons by contacting a hydrocarbon feedstream under hydrocarbon conversion conditions with a large crystal zeolite catalyst. The large crystal zeolite of the catalyst used in the hydrocarbon conversion process is made by heating an aqueous zeolite synthesis mixture under agitation to a temperature equal to or less than the effective nucleation temperature of the synthesis mixture. After this step, the aqueous synthesis mixture is heated in the absence of agitation to a temperature equal to or greater than the effective nucleation temperature of the aqueous zeolite synthesis mixture. The process finds particular application in hydrocarbon conversion processes where reduced non-selective acidity is important for reaction selectivity and/or the maintenance of catalyst activity, e.g., toluene disproportionation, dealkylation, alkylation, and transalkylation.

Abstract: The invention relates to dioctahedral phyllosilicates 2:1 whose basal spacing is at least equal to 2.0.times.10.sup.-9 m and which in the interlayer space comprise pillars based on at least one of the compounds that is selected from the group that is formed by SiO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2, V.sub.2 O.sub.5, or any combination of the latter. Preferably, they contain fluorine. The invention also relates to a process for their preparation that includes treatment with a surfactant, followed by treatment with a primary or secondary amine and at least one alkoxide of an element that is selected from the group that is formed by the elements Si, Al, Zr, Ti and V. The invention also relates to a catalyst that comprises said phyllosilicate, at least one matrix, and optionally a zeolite Y. The invention also relates to a process for converting hydrocarbons with this catalyst, and in particular a hydrocracking process.

Abstract: This invention relates to a process of catalytic hydroconversion of a heavy hydrocarbon oil containing a substantial portion of components having an atmospheric boiling point above 565.degree. C. to give a product hydrocarbon oil containing components having a boiling point below about 565.degree. C. The process includes steps of mixing a heavy hydrocarbon oil with an oil soluble molybdenum compound, introducing the resulting mixture into a hydroconversion zone, introducing a reactor feed gas into the hydroconversion zone, and recovering the product hydrocarbon oil from the hydroconversion zone.

Abstract: The invention concerns a hydrocracking catalyst comprising at least one amorphous or poorly crystallised matrix of oxide type, at least one element from group VB, preferably niobium, at least one zeolite selected from the group formed by zeolites NU-85, NU-86 and NU-87, and at least one element selected among boron and silicon, optionally P, optionally at least one element selected from the elements from group VIB and group VIII, and/or optionally at least one element from group VIIA. The invention also concerns the use of that catalyst in the hydrocracking of hydrocarbon charges.

Abstract: The invention provides a hydrocracking catalyst comprising at least one matrix, a zeolite selected from the group formed by NU-85, NU-86 and NU-87 zeolites, at least one metal selected from the group formed by metals from group VIB and VIII of the periodic table, at least one element selected from the group formed by boron and silicon, optionally phosphorous, optionally at least one group VIIA element, and optionally at least one group VIIB element. The invention also relates to the use of the catalyst for hydrocracking hydrocarbon feeds.

Abstract: A bitumen is rendered pipelineable by partially hydroconverting the bitumen and then adding sufficient diluent to the partially hydroconverted bitumen to provide a mixture having an API gravity at 15.degree. C. of at least 19.degree. and a viscosity at 40.degree. C. in the range of about 35 to about 60 cP.

Abstract: A catalytic hydrocracking process wherein a hydrocarbonaceous feedstock and a liquid recycle stream having a temperature greater than about 500.degree. F. and saturated with hydrogen is contacted with hydrogen and a metal promoted hydrocracking catalyst in a hydrocracking reaction zone at elevated temperature and pressure to obtain conversion to lower boiling hydrocarbons. The resulting hot, uncooled effluent from the hydrocracking reaction zone is hydrogen stripped in a stripping zone maintained at essentially the same pressure as the hydrocracking zone to produce a first gaseous hydrocarbonaceous stream and a first liquid hydrocarbonaceous stream. At least a portion of the first gaseous hydrocarbonaceous stream is condensed to produce a second liquid hydrocarbonaceous stream and a second hydrogen-rich gaseous stream. At least a portion of the first liquid hydrocarbonaceous stream is recycled to the hydrocracking reaction zone.

Abstract: A catalyst support comprising at least one matrix, at least one Y zeolite with a lattice parameter which is in the range 24.15 .ANG. to 24.38 .ANG. (1 nm=10 .ANG.) and at least one Y zeolite with a lattice parameter of more than 24.38 .ANG. and less than or equal to 24.51 .ANG.. The invention also concerns a catalyst comprising said support and at least one hydro-dehydrogenating element, and a conventional hydroconversion process for petroleum cuts using said catalyst.

Abstract: The invention relates to a process for improving the pour point of a feedstock that comprises paraffins of more than 10 carbon atoms, in which the feedstock that is to be treated is brought into contact with a catalyst that comprises the IM-5 zeolite and at least one hydro-dehydrogenating element, at a temperature of between 170 and 500.degree. C., a pressure of between 1 and 250 bar, and an hourly volume velocity of between 0.05 and 100 h.sup.-1, in the presence of hydrogen at a ratio of 50 to 2000 l/l of feedstock. The oils that are obtained have good pour points and high viscosity indices (VI). The process can also be applied to gas-oils and other feedstocks whose pour points need to be lowered.

Abstract: The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which process the feed to be treated is brought into contact with a catalyst comprising NU-86 zeolite, preferably dealuminated, and at least one hydro-dehydrogenating element, at a temperature which is in the range 170.degree. C. to 500.degree. C., a pressure in the range 1 to 250 bar and an hourly space velocity in the range 0.05 to 100 h.sup.-1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed. The product from heavy feeds is fractionated to produce at least one cut including at least one middle distillate with a reduced pour point, and a residue including oil bases with a reduced pour point and a high viscosity index.

Abstract: The present invention provides a catalyst composition, and a hydrocarbon conversion process in which it is used, comprising as first cracking component a zeolite beta having a silica to alumina molar ratio of at least 20 which is in the form of crystals less than 100 nm in size; a second cracking component selected from (i) crystalline molecular sieves having pores with diameters greater than 0.6 nm, (ii) crystalline, mesoporous aluminosilicates having pores with diameters of at least 1.3 nm, and (iii) clays; and at least one hydrogenation component.

Abstract: The invention relates to a hydrocracking catalyst containing at least one hydrogenation metal component, and particles of a cracking component of which at least 50% of the outer surface is coated with a layer of a pre-formed oxide, which layer has a thickness in the range of 10 nm to 5 .mu.m. The cracking component is either a zeolitic cracking component or an amorphous cracking component or a mixture of both. The particles may be coated with oxide by contacting uncoated particles having a mean particle size in the range of 0.1 to 10 .mu.m with an aqueous medium containing particles of the oxide to be provided as the coating having a particle size in the range of 10-5000 nm, with the ratio between the oxide particle size and the mean particle size of the cracking component particles being in the range of 0.001:1 to 0.5:1. The coating oxide is preferably alumina or silica/alumina.

Abstract: The present invention relates to new crystalline zeolite SSZ-42 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using an organic templating agent selected from the group consisting of N-benzyl-1,4-diazabicyclo?2.2.2!octane cations and N-benzyl-1-azabicyclo?2.2.2!octane cations.

Abstract: A process is disclosed for the catalytic dewaxing of a hydrocarbon oil feed comprising waxy molecules, which process comprises:contacting a feed under catalytic dewaxing conditions with a catalyst composition comprising a molecular sieve containing crystallites covalently bound alumina moieties in its framework and having pores with a diameter in the range of from 0.35 to 0.80 nm and recovering a product having a reduced pour point, wherein the molecular sieve has been modified to reduce the mole percentage of alumina by coating the surface of the crystallites with a refractory inorganic oxide which is essentially free of alumina.

Abstract: The invention concerns a composition comprising at least one matrix, at least one faujasite type zeolite and at least one TON type zeolite. The TON type zeolite can be Nu-10, THETA-1, KZ-2, or ISI-1. The catalyst also contains at least one hydrogenating element from groups VIII and VI.The catalyst is particularly for use for hydrocracking to maximize the yield of middle distillates (kerosine and gas oil).

Abstract: The wax-containing hydrocarbon feedstocks are pre-treated by contacting them with a homogeneous solution containing 1-5 vol. % of an acid diluted in an alcohol/water mixture (preferably containing 60-90 vol. % alcohol). The pre-treated feedstock is then contacted, in the presence of hydrogen, with at least two catalysts in sequence and with no intermediate separation, comprising at least one hydrodewaxing catalyst and one hydrocracking catalyst, to recover high-grade middle distillates.

Abstract: The present invention relates to new crystalline zeolite SSZ-41 which comprises oxides of (1) silicon or a mixture of silicon and germanium, and (2) zinc, said zinc being present in an amount from about 2 wt % to about 5 wt % of zinc metal based on the total weight of metals in said zeolite. Zeolite SSZ-41 may also optionally contain oxides of aluminum, iron, gallium or mixtures thereof. Zeolite SSZ-41 has the X-ray diffraction lines of Table I and has an argon adsorption capacity of at least about 0.06 cc/gm at 87.degree. K. Also disclosed are methods of making and using zeolite SSZ-41.

Abstract: A crystalline zeolite high-silica SSZ-37 is prepared using a N,N-dimethyl-4-azoniatricyclo [5.2.2.0.sup.(2,6) ] undec-8-ene cation as a template wherein said zeolite is used in hydrocarbon conversion processes.

Abstract: Raffinate is catalytically hydrodewaxed to lube basestock in a mixture containing between 0.01 and 1 weight percent of pour point depressants comprising the copolymer residue of a mixture of 1-alkene comonomers selected from the group consisting of C.sub.3 -C.sub.28 1-alkenes. The mixture is contacted with hydrogen and shape selective metallosilicate catalyst particles under mild hydrodewaxing conditions to produce an increased yield of lube basestock having a pour point below -25.degree. F. and viscosity index greater than 100.

Abstract: There is provided a method for preparing an alumina bound, zeolite catalyst, wherein a zeolite of low silanol content is used as the source of zeolite used to prepare the catalyst. A particular zeolite used in this catalyst is zeolite Y. This catalyst may be combined with at least one hydrogenation component and used to hydrocrack hydrocarbons, such as gas oils. In particular, an NiW/USY/alumina catalyst may be used in a hydrocracking reaction to produce distillate boiling range hydrocarbons from higher boiling hydrocarbons.