Abstract: The invention pertains to a hydroprocessing catalyst suitable for the conversion of heavy hydrocarbon oils, which comprises 7–20 wt. % of Group VI metal, calculated as trioxide, and about 0.5–6 wt. % of Group VIII metal, calculated as oxide, on a carrier comprising alumina, the catalyst having a surface area of about 100–180 m2/g, a total pore volume of about 0.55 ml/g or more, a % PV(>200 ? d) of at least about 50%, a % PV(>1,000 ? d) of at least about 5%, a % PV(100–1,200 ? d) of at least about 85%, a % PV(>4,000 ? d) of about 0–2%, and a % PV(>10,000 ? d) of about 0–1%. The catalyst of the present invention shows improved metals and asphaltene removal, combined with appropriate sulfur, nitrogen, and Conradson carbon removal. Additionally, the catalyst shows a decrease in sediment formation and an improved conversion in ebullating bed operations. In fixed bed operation, the catalyst produces product with an improved storage stability.

Abstract: A silica-rich support and a catalyst containing the silica-rich support and a catalytic component. The support has a specific structure characterized by a set of claimed physicochemical properties: in the 29Si MAS NMR spectrum the state of silicon is characterized by the presence of lines with chemical shifts ?100±3 ppm (line Q3) and ?110±3 ppm (line Q4), with the ratio of the integral intensities of the lines Q3/Q4 of from 0.7 to 1.2 (FIG. 1); in the IR spectrum there is an absorption band of hydroxyl groups with the wave number 3620–3650 cm?1 and half-width 65–75 cm?1 (FIG. 2); the carrier has a specific surface area, as measured by the BET techniques from the thermal desorption of argon, SAR=0.5–30 m2/g and the surface, as measured by alkali titration techniques, SNa=10–250 m2/g, with SNa/SAr=5–30.

Abstract: An aircraft environmental control system includes a catalytic converter having ozone-destroying capability. A surface of the catalytic converter is anodized to form an anodized layer, and the metal oxide layer is washcoated to form a washcoat layer. An ozone destroying catalyst is impregnated in the anodized and washcoat layers. The catalyst may include one or more metals. For example, a bimetallic catalyst may include a precious metal and a transition metal.

Abstract: A substrate having a catalytic surface thereon characterized as a coating of metal oxide and noble metal particles in the nominal diameter size distribution range of <3 microns, and more particularly <1 micron, is produced by thermal spraying a mixture of large size particles (e.g., in a nominal size distribution range of >10 micrometers) of hydroxides, carbonates or nitrates of the metals: cerium, aluminum, tin, manganese, copper, cobalt, nickel, praseodymium or terbium particles; and hydroxides, carbonates or nitrates of the noble metals: ruthenium, rhodium, palladium, silver, iridium, platinum and gold onto the substrate. The coating adheres to the surface and provides desirable catalyst properties.

Abstract: Raney alloy catalysts applied to a support are described, said catalysts having an extremely thin layer of Raney alloy with a thickness of 0.01 to 100 ?m. These catalysts are prepared by vapor deposition of the appropriate metals under reduced pressure. They are generally suitable for all known hydrogenation and dehydrogenation reactions and are extremely abrasion-resistant.

Abstract: A method for uniformly dispersing noble metal particles on a porous carrier by first mixing an alkoxide product of aluminum or silicon and a noble metal precursor together; then mixing a surfactant into the mixture; then mixing ammonia solution into the mixture to form a hydroxide of aluminum or silicon; then mixing a reducing agent into the mixture to convert the noble metal precursor into noble metal nanoparticles dispersed on the hydroxide; then separating the noble metal nanoparticles and the hydroxide from the mixture before calcining the hydroxide into an oxide of aluminum or silicon.

Abstract: A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor ?. The pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.

Abstract: In one embodiment, a catalyst configuration, comprises: a substrate, a NiO layer disposed on the substrate, wherein the NiO layer comprises greater than or equal to about 75 wt % of the NiO in the catalyst configuration; and a catalyst layer comprising a NOx adsorbing catalyst. In another embodiment, a catalyst configuration, comprises: a substrate, a catalyst layer disposed on the substrate, wherein the catalyst layer comprises a NOx adsorbing catalyst and thermally treated NiO. In one embodiment, the method for making a NOx adsorber comprises: thermally treating NiO to a temperature of about a maximum catalyst application temperature minus 100° C. and the maximum catalyst application temperature, disposing a catalyst configuration on the substrate, wherein the catalyst configuration comprises the thermally treated NiO and a NOx adsorption catalyst, and disposing the substrate in a housing.

Abstract: A process is described for the upgrading of hydrocarbon mixtures which boil within the naphtha range containing sulfur impurities, i.e. a hydrodesulfuration process with contemporaneous skeleton isomerization and reduced hydrogenation degree of the olefins contained in said hydrocarbon mixtures, the whole process being carried out in a single step. The process is carried out in the presence of a catalytic system comprising a metal of group VIB, a metal of group VIII and a carrier of acid nature consisting of a mesoporous silico-alumina.

Abstract: This invention relates to improved catalytic compositions suited for use in hydrogenation processes and to an improved process for hydrogenating organic compounds as in amination of alcohols or hydrogenation of nitro groups to the amine using the catalyst. The catalytic composition is more particularly an improvement in nickel catalysts promoted with palladium carried on a support. The improvement resides in including a promoting effect of a metal M and/or its oxide, selected from Zn, Cd, Cu, and Ag, typically from about 0.01 to 10% by weight of the support.

Abstract: The present invention provides a coating composition for substrates. The coating composition of the present invention generally includes a silicate binder and a plurality of photocatalytic particles. The silicate binder functions as a bonding agent to establish the coating on the substrate. A plurality of photocatalyst particles are dispersed throughout the silicate binder. The particles are included in an amount that provides sufficient distribution of the particles in the resulting coating. The incorporation of the present invention onto substrates prevents algal growth on building materials utilizing the coated substrates.

Abstract: A nickel-rhodium alloy based catalyst for catalyzing the production of synthesis gas from a light hydrocarbon and O2 by a net catalytic partial oxidation process is disclosed. Preferred nickel-rhodium alloy based catalysts comprise about 1-50 weight percent nickel and about 0.01-10 weight percent rhodium on a porous refractory support structure. In certain embodiments, the catalyst also contains a lanthanide element, zirconium, cobalt, manganese or magnesium.

Abstract: A method and system for the in situ synthesis of a combinatorial library including impregnating a first component with a second component. The method and system advantageously may be employed in the synthesis of materials for screening for usefulness as a catalyst.

Abstract: Production of nickel/silica hydrogenation catalyst precursors by heating a slurry of particulate silica, e.g. kieselguhr, in an aqueous nickel ammine carbonate solution for a total period of at least 200 minutes at a pH above 7.5, followed by filtration, washing, drying, and optionally calcination.

Abstract: The invention pertains to a process for preparing spherical oxide particles comprising the steps of shaping a starting material comprising an oxide hydrate into particles of substantially constant length by leading the material to a set of two rolls rotating towards each other followed by leading the material to a roll equipped with grooves to form rod-type shapes, cutting the rod-type shapes into particles of substantially constant length, converting the thus formed particles into spheres, and heating the particles to convert the oxide hydrate into an oxide. The process results in particles in which there is substantially no difference in density between the core portion and the shell portion of the particles, which results in a high abrasion resistance. The particles prepared by the claimed process are particularly suitable for the preparation of hydroprocessing catalysts, more in particular for the preparation of hydroprocessing catalysts suitable for the hydroprocessing of heavy hydrocarbon feeds.

Abstract: A composition is provided that can be used, for example, in a fuel processor for a fuel cell system. The composition includes a first material such as a catalyst, and a second material such as a desiccant. The second material is capable of sorbing and desorbing a heat transfer material such as water, and is present in an amount sufficient to sorb an amount of the heat transfer material sufficient to remove a portion of the heat generated when the first material undergoes an exothermic reaction.

Abstract: A silica-based photocatalyst fiber having visible-light activity, which fiber comprises a composite oxide phase comprising an oxide phase (first phase) mainly made of a silica component and a titania phase (second phase), wherein the second phase contains a metal element other than titanium and the existent ratio of the second phase slopingly increases towards the surface of the fiber, and a process for the production thereof.

Abstract: A hydrocarbon conversion catalyst contains at least one silica-alumina having the following characteristics: A content by weight of silica SiO2 of between 10 and 60% by weight; an Na content less than 300 ppm by weight; a total pore volume of between 0.5 and 1.2 m/g measured by mercury porosimetry; a porosity of said silica-alumina wherein: the volume of mesopores whose diameter is between 40 Å and 150 Å, and whose mean diameter varies between 80 and 120 Å represents between 30 and 80% of the total pore volume, and (ii) the volume of macropores, whose diameter is greater than 500 Å and preferably between 1000 Å and 10,000 Å represents between 20 and 80% of the total pore volume; a specific surface area greater than 200 m2/g, and at least one hydro-dehydrogenating element selected metals of group VIB and group VIII, and optionally phosphorus, boron, silicon, or elements of group VIIA, VIIB or VB.

Abstract: A lean NOx catalyst and method of preparing the same is disclosed. The lean NOx catalyst includes a ceramic substrate, an oxide support material, preferably &ggr;-alumina, deposited on the substrate and a metal promoter or dopant introduced into the oxide support material. The metal promoters or dopants are selected from the group consisting of indium, gallium, tin, silver, germanium, gold, nickel, cobalt, copper, iron, manganese, molybdenum, chromium, cerium, vanadium, oxides thereof, and combinations thereof. The &ggr;-alumina preferably has a pore volume of from about 0.5 to about 2.0 cc/g; a surface area of between about 80 to 350 m2/g; an average pore size diameter of between about 3 to 30 nm; and an impurity level of less than or equal to 0.2 weight percent. In a preferred embodiment the &ggr;-alumina is prepared by a sol-gel method, with the metal doping of the &ggr;-alumina preferably accomplished using an incipient wetness impregnation technique.

Abstract: A sorbent composition is provided which can be used in the desulfurization of a hydrocarbon-containing fluid such as cracked gasoline or diesel fuel. The sorbent composition contains a support component and a promoter component with the promoter component being present as a skin on the support component. Such sorbent composition is prepared by a process of impregnating a support component with a promoter component, wherein the promoter component has been melted under a melting condition, followed by drying, calcining, and reducing to thereby provide the sorbent composition.

Abstract: A hydrogenation catalyst and a process for its production, wherein the catalyst can be used for the hydrogenation of nitro groups in nitroaromatics to form the corresponding amines in the presence of water.

Abstract: Compositions for reduction of gas phase reduced nitrogen species and NOx generated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, and (iv) a noble metal component, preferably rhodium or iridium, and mixtures thereof, are disclosed. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced emissions of gas phase reduced nitrogen species and NOx in an effluent off gas of a partial or incomplete combustion FCC regenerator provide for an overall NOx reduction as the effluent gas stream is passed from the FCC regenerator to a CO boiler, whereby as CO is oxidized to CO2 a lesser amount of the reduced nitrogen species is oxidized to NOx.

Abstract: A modified carrier carrying on at least a part of an inert carrier surface an oxide which is represented by the formula (1): XaYbZcOd (wherein X is at least an element selected from alkaline earth metals; Y is at least an element selected from Si, Al, Ti and Zr; Z is at least an element selected from Group IA elements and Group IIIb elements of the periodic table, B, Fe, Bi, Co, Ni and Mn; and O is oxygen; a, b, c and d denote the atomic ratios of X, Y, Z and O, respectively, where a=1, 0<b≦100, 0≦c≦10, and d is a numerical value determined by the extents of oxidation of the other elements) is provided. A catalyst formed with the use of this modified carrier carrying a complex oxide containing Mo and V is useful as a vapor phase catalytic oxidation catalyst, and is particularly suitable as a catalyst for preparing acrylic acid through vapor phase catalytic oxidation of acrolein.

Abstract: Production of nickel/silica hydrogenation catalyst precursors by heating a slurry of particulate silica, e.g. kieselguhr, in an aqueous nickel ammine carbonate solution for a total period of at least 200 minutes at a pH above 7.5, followed by filtration, washing, drying, and optionally calcination.

Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, molybdenum and sulfur component on alumina, and a tungsten-impregnated support. The catalyst prepared in accordance with the present invention is very advantageous in terms of excellent selective removal effect of nitrogen oxides as well as better poisoning resistance to sulfur oxides.

Abstract: A desulfurizing agent comprising a silica-alumina carrier having an Si/Al mole ratio of 10 or less and nickel carried thereon; a desulfurizing agent for hydrocarbons derived from petroleum which comprises a carrier and a metal component carried thereon and has a specific surface area of pores having a pore diameter of 3 nm or less of 100 m2/g or more; an Ni-Cu based desulfurizing agent comprising a carrier and, carried thereon, (A) nickel, (B) copper, and (C) an alkali metal or another metal; a desulfurizing agent for hydrocarbons derived from petroleum which comprises a carrier and a metal component carried thereon and has a hydrogen adsorption capacity of 0.4 mmol/g or more; and methods for producing these nickel-based and nickel-copper-based desulfurizing agents. The above desulfurizing agents are capable of adsorbing and removing with good efficiency the sulfur contained in hydrocarbons derived from petroleum to a content of 0.2 wt. ppm or less and have a long service life.

Abstract: A method for producing a hydrotreating catalyst which relates to the production of a solid catalyst composed of a carrier impregnated with an active component, to give a catalyst for hydrotreating hydrocarbon oils, which contains a large quantity of a hydrogenation-active component and uniform, crystalline composite metal compound, and shows high catalytic activity.

Abstract: A silica-group composite oxide fiber formed of a composite oxide phase of an oxide phase (first phase) mainly made of a silica component and a metal oxide phase (second phase) excluding silica, in which the existent ratio of at least one metal element of a metal oxide constituting the second phase upward slopingly increases toward the surface layer of the fiber and a process for the production thereof.

Abstract: A nickel/rhenium catalyst composition for the reductive amination of lower aliphatic alkane derivatives is described. The catalyst includes from about 2 to about 75 weight percent nickel and has a nickel to rhenium weight percent ratio of from about 1:1 to about 200:1. The nickel and rhenium are supported on an alumina-silica support which contains from about 5 to about 65 weight percent silica and has a BET surface area of from about 30 to about 450 m2/g. A process for the reductive amination of lower aliphatic alkane derivatives using such a catalyst composition is also provided.

Abstract: Composite of at least two metal oxides in the form of Primary Particles and a support having a particle size greater than the Primary Particles used in the formation of a catalyst composition for the treatment of a pollutant containing gas.

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 catalyst system and method for making carbon fibrils is provided which comprises a catalytic amount of an inorganic catalyst comprising nickel and one of the following substances selected from the group consisting of chromium; chromium and iron; chromium and molybdenum; chromium, molybdenum, and iron; aluminum; yttrium and iron; yttrium, iron and aluminum; zinc; copper; yttrium; yttrium and chromium; and yttrium, chromium and zinc. In a further aspect of the invention, a catalyst system and method is provided for making carbon fibrils which comprises a catalytic amount of an inorganic catalyst comprising cobalt and one of the following substances selected from the group consisting of chromium; aluminum; zinc; copper; copper and zinc; copper, zinc, and chromium; copper and iron; copper, iron, and aluminum; copper and nickel; and yttrium, nickel and copper.

Abstract: A process of preparing a product gas mixture comprising CO and H2 from a light hydrocarbon and O2 mixture is disclosed. The process includes contacting a reactant gas mixture comprising a C1-C5 hydrocarbon and a source of molecular oxygen with a catalytically effective amount of a supported catalyst comprising nickel and rhodium. The catalyst and reactant gas mixture is maintained at catalytic partial oxidation promoting conditions of temperature and pressure during the contacting period, which is preferably 10 milliseconds or less. Certain preferred catalysts comprise an alloy of about 1-50 weight percent nickel and about 0.01-10 weight percent rhodium on a porous refractory support structure.

Abstract: The invention concerns a catalyst comprising at least two group VIII metals, chlorine, fluorine, and at least one amorphous oxide matrix. The catalytic composition is such that the fluorine content is 1.5% by weight or more of the total catalyst mass. The invention also concerns the use of this catalyst in hydrogenating aromatic compounds contained in feeds comprising sulphurated compounds.

Abstract: An acidic amorphous silica-amumina has a large specific surface area and a large pore volume. A carrier complex and a hydrotreating catalyst containing acidic amorphous silica-alumina, in particular a hydrocracking catalyst containing acidic amorphous silica-alumina in combination with a modified zeolite-Y, treats petroleum hydrocarbon materials to produce middle distillates. The amorphous silica-alumina has a SiO2 content of 10-50 wt. %, a specific surface area of 300-600 m2/g, a pore volume of 0.8-1.5 ml/g and an IR acidity of 0.25-0.60 mmol/g. The catalyst shows a relatively high activity and mid-distillate selectivity and can be particularly used in hydrocracking process for producing mid-distillates with a higher yield.

Abstract: A hydrogenation catalyst and a process for hydrogenating an unsaturated polymer comprising contacting the unsaturated polymer with a hydrogenating agent in the presence of a mixed hydrogenation catalyst, characterized in that the mixed hydrogenation catalyst comprises a Group VIII metal component and at least one component selected from the group consisting of a rhenium, molybdenum, tungsten, tantalum and niobium component.

Abstract: It is disclosed a new catalyst system for the polymerization of olefins comprising the product obtainable by contacting the following components: (A) one or more compounds of a late transition metal belonging to Group 8-11 of the Periodic Table; and (B) the reaction product of water with one or more organometallic aluminum compounds of formula (IV): Al(CH2—CR3R4R5)xR6yHz, wherein R3 is a C1-C20 alkyl, C3-C20 cycloalkyl or C7-C20 alkylaryl radical; R4 is different from a straight alkyl and is a C3-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; or R3 and R4 form together a C4-C6 ring; R5 is hydrogen or a C1-C20 alkyl, C6-C20 aryl, C7-C20 alkylaryl or arylalkyl radical; R6 is a C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; x is 1-3; z is 0-1; and y is 3−x−z; the molar ratio between said organometallic aluminum compound and water being comprised between 0.5:1 and 100:1.

Abstract: The present invention is directed to a hydrogenation catalyst and a process for hydrogenating an aromatic polymer having a number average molecular weight (Mn) of from 40,000 to less than 120,000 comprising contacting the aromatic polymer with a hydrogenating agent in the presence of a silica supported metal hydrogenation catalyst, characterized in that the silica has a pore size distribution such that at least 95 percent of the pore volume is defined by pores having diameter from 300 to 1000 angstroms, less than 4 percent of the pore volume is defined by pores having a diameter of 200 angstroms or less and at least 80 percent aromatic hydrogenation is achieved.

Abstract: The invention concerns a catalyst comprising at least one matrix, at least one dioctahedral 2:1 phyllosilicate which is optionally synthesised in a fluorine-containing medium and optionally bridged, at least one metal selected from elements from group VIB and/or group VIII of the periodic table, boron and/or silicon, optionally phosphorous, optionally at least one group VIIA element, and optionally at least one group VIIB element. The invention also concerns the use of the catalyst for hydrocracking hydrocarbon-containing feeds.

Abstract: A solid, particulate catalyst composition is provided containing an active nickel component in which the nickel constitutes from about 25 to about 60 wt % of the catalyst composition; a molybdenum component in which the molybdenum constitutes from about 5 to about 20 wt % of the catalyst composition; and a binder component comprising at least one of oxides of silica, zirconium, aluminum, zinc and calcium, each of the calcium, aluminum and zinc being present in an amount no greater than about 2 wt %, preferably about 0 to 1 wt %. The catalyst is designed for the selective hydrogenation of 3-hydroxypropanal to 1,3-propanediol in aqueous solution.

Abstract: Syngas catalyst compositions supported on refractory ceramic textiles and fibrous ceramic composite catalysts are disclosed, together with their methods of making and use for catalyzing syngas production from methane by a net partial oxidation reaction. In certain preferred embodiments the active catalyst material is Rh, Ni, Cr, or combinations thereof. The ceramic textiles may be arranged in a variety of 3-D forms, such as Nextel™ or various woven or braided meshes and layers. The ceramic textile is easier to scale up to commercial reactor dimensions than the conventional foams and monoliths comprising ceramics and metals. Tolerance to thermal expansion and thermal heat integration are also improved by the new catalysts. A synthesis gas production process employs a new ceramic composite catalyst in a fixed reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising carbon monoxide and hydrogen in a molar ratio of about 2:1 H2/CO.

Abstract: The invention is directed to hydrogenation catalyst particles based on nickel or cobalt and a support, incorporated in a matrix of hardened oil or a derivative thereof, which matrix material is solid at a temperature of 25° C., said particles having an average weight of at least 120 mg and an average height of at least 2.8 mm.

Abstract: The present invention relates to a hydrotreating catalyst composed of a carrier having a Brønsted acid content of at least 50 &mgr;mol/g such as a silica-alumina carrier or a silica-alumina-third component carrier, in which the silica is dispersed to high degree and a Brønsted acid content is at least 50 &mgr;mol/g, and at least one active component (A) selected from the elements of Group 8 of the Periodic Table and at least one active component (B) selected from the elements of Group 6 of the Periodic Table, supported on said carrier. The present invention also relates to a method for hydrotreating hydrocarbon oils using the same. The hydrotreating catalyst of the present invention provides excellent tolerance to the inhibiting effect of hydrogen sulfide, high desulfurization activity, and exhibits notable effects for deep desulfurization of hydrocarbon oils containing high contents of sulfur, in particular gas oil fractions containing difficult-to-remove sulfur compounds.

Abstract: A process for preparing supported nickel catalyst consisting of supporting nickel or metal salt of nickel, alkali metal, alkaline earth metal having low melting point on silicon and aluminum-containing support having high surface area such as zeolite, silica and alumina as an oxide by melting effectively nickel or metal salt of nickel, alkali metal and alkaline earth metal having low melting point is disclosed. This process is characterized in that the supported nickel catalyst prepared by the present invention can be used in reforming reaction of hydrocarbons by using carbon dioxide, steam and oxygen as an oxidant. Metal salts used in the preparation of supported nickel catalyst is generally nitrate, chloride, acetate and carbonate having low melting point of 500° C. or less. The contents of nickel, alkali metal and alkaline earth metal of the catalyst are 1 to 20% by weight, 10% by weight or less and 20% by weight or less, respectively.

Abstract: A process is disclosed for producing hydrocarbons by contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. The process is characterized by using a catalyst prepared by a method involving (1) forming a catalyst gel by destabilizing an aqueous colloid comprising (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium), (b) colloidal cerium oxide, zirconium oxide, titanium oxide and/or aluminum oxide, and optionally (c) Al(OR)3, Si(OR)4, Ti(OR)4 and/or Zr(OR)4 where each R is an alkyl group having from 1 to 6 carbon atoms; and (2) drying the gel.

Abstract: The invention provides a hydrocracking catalyst comprising at least one mineral matrix, at least one beta zeolite, at least one group VB element or at least one mixed sulphide phase comprising sulphur, optionally at least one group VIB or group VIII element, optionally at least one element selected from the group formed by silicon, boron or phosphorous, and optionally at least one group VIIA element.

Abstract: A catalytic cracking catalyst comprising zeolite, kaolin, alumina and/or silica, antimony and 100-5,000 wt. ppm Ni is disclosed. The Ni-antimony interact in the environment of a fluidized catalytic cracking reactor to increase the magnetic susceptibility of the catalyst, permitting removal of nickel contaminated catalyst by magnetic separation.

Abstract: A catalyst for the production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound and less than about 100 ppm of a source for a noble metal, such as palladium, platinum, ruthenium, rhenium, osmium, rhodium or iridium. Additional components of the catalyst may include compounds based on cerium, molybdenum, tungsten and other such promoters. Also a process for the production of alkenylaromatics from alkylaromatics using this catalyst.

Abstract: The present invention relates to amorphous microporous mixed oxides, characterized by having, in dried form, a narrow pore size distribution (half width <.+-.10% of the pore diameter) of micropores with diameters in the range of <3 nm and a total surface area of between 20 and 1000 m.sup.2 /g, containing a fraction of from 0.1 to 20% by weight of non-hydrolyzable organic groups, and to a process for the preparation of such oxides.

Abstract: The invention provides a method for preparing catalysts, containing metals of groups VI and VIII on a carrier. The metals of groups VI and VIII metals are introduced in the form of a compound of formula M.sub.x A B.sub.12 O.sub.40 in which M is cobalt and/or nickel, A is phosphorus, silicon and/or boron, B is molybdenum and/or tungsten and x is 2 or more, 2.5 or more, or 3 or more depending on whether A is respectively phosphorus, silicon or boron. The catalysts thus obtained are useful for hydro-treating hydrocarbon feedstocks.