Abstract: Method for preparing a catalyst comprising a bimetallic active phase made of nickel and copper, and a support comprising a refractory oxide, comprising the following steps: a step of bringing the support into contact with a solution containing a nickel precursor is carried out; a step of bringing the support into contact with a solution containing a copper precursor is carried out; a step of drying the catalyst precursor at a temperature lower than 250° C. is carried out; the catalyst precursor obtained is supplied to a hydrogenation reactor, and a step of reduction by bringing said precursor into contact with a reducing gas at a temperature lower than 200° C. for a period greater than or equal to 5 minutes and less than 2 hours is carried out.

Abstract: Process for the continuous hydrogenation of triglyceride containing raw materials in a fixed bed reactor system having several catalyst beds arranged in series and comprising at least one hydrogenation catalyst comprising an active phase constituted by a nickel and molybdenum element. The raw material feed, hydrogen containing gas and diluting agent are passed together through the catalyst beds at hydrogenation conditions. The raw material feed stream as well as the stream of hydrogen containing gas are divided into an equal number of different partial streams. These are each passed to one catalyst bed in such a manner that the weight ratio of diluting agent to raw material feed is essentially the same at the entrance of all catalyst beds and does not exceed 4:1. The claimed process is preferably conducted at low temperatures and allows the utilization of existing units due to the low recycle ratio.

Abstract: The invention relates to a process for selectively hydrogenating an alkyne to the corresponding alkene comprising a step of contacting a gaseous feed comprising hydrogen and 0.1 to 20 mass % of alkyne with a catalyst comprising at least one Group 10 element on a boron-modified support. The process shows high conversion and good selectivity, and can be stably operated also if the feed comprises more than 2 mass % of alkyne.

Abstract: The present invention discloses a process for the selective hydrogenation of phenylacetylene in the presence of styrene conducted in a combined bed, which process comprises under hydrogenation reaction conditions, passing a hydrocarbon fraction feedstock containing phenylacetylene and styrene through a combined bed reactor containing a catalyst A and a catalyst B to contact the feedstock with the catalyst A and the catalyst B in turn, wherein the catalyst A is a nickel-based catalyst, the catalyst B is at least one selected from the group consisting of palladium-based catalysts and copper-based catalysts, and a weight ratio of the catalyst A loaded to the catalyst B loaded is from 0.5:1 to 5:1.

Abstract: The present invention relates to a process for the hydrogenation, in particular the selective hydrogenation of unsaturated hydrocarbon compounds, such as the selective hydrogenation of acetylene to ethylene, using a hydrogenation catalyst comprising an ordered intermetallic compound, namely an ordered cobalt-aluminum or iron-aluminum intermetallic compound. According to another aspect, the present invention relates to a catalyst comprising a support and at least one specific ordered cobalt-aluminum and/or iron-aluminum intermetallic compound supported thereon, as well as to the use of specific ordered intermetallic cobalt-aluminum and iron-aluminum intermetallic compounds as catalysts. The ordered cobalt-aluminum and iron-aluminum intermetallic compounds proved to be highly selective and long-term stable catalysts, e.g. in the selective hydrogenation of acetylene to ethylene in a large excess of ethylene.

Abstract: The present invention relates to a method for preparing a supported metal catalyst for the selective hydrogenation of unsaturated hydrocarbons, characterized in that it comprises the following steps: a) electroplating a layer of nickel on a metallic support, and then b) electroplating a top layer of platinum and/or palladium. The present invention also relates to the supported metal catalyst obtained by this process, and the use thereof in hydrogenation reactions of unsaturated hydrocarbons, in particular for the selective hydrogenation of light olefins.

Abstract: The present disclosure relates to a method for preparing a metal catalyst comprising at least one ligand that is coordinated to the metal through at least one phosphorous (P) atom and at least one nitrogen (N) atom, the method comprising reacting a metal pre-cursor complex with an acid addition salt of an aminophosphine, diaminophosphine, aminodiphosphine or diaminodiphosphine, in the presence of a base.

Abstract: Methods are provided for refining natural oil feedstocks and partially hydrogenating polyunsaturated olefins and polyunsaturated esters. The methods comprise reacting the feedstock in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product comprising olefins and esters. In certain embodiments, the methods further comprise separating the polyunsaturated olefins from the polyunsaturated esters in the metathesized product. In certain embodiments, the methods further comprise partially hydrogenating the polyunsaturated olefins in the presence of a hydrogenation catalyst, wherein at least a portion of the polyunsaturated olefins are converted to monounsaturated olefins. In other embodiments, the methods further comprise partially hydrogenating the polyunsaturated esters in the presence of a hydrogenation catalyst, wherein at least a portion of the polyunsaturated esters are converted to monounsaturated esters.

Abstract: Selective hydrogenation of a gasoline cut containing polyunsaturated hydrocarbons containing at least 2 carbon atoms per molecule and having an end point of 250° C. or less, by bringing said gasoline cut into contact with at least one catalyst the active phase of which comprises at least one metal from group VIII and at least one metal from group VIB deposited on a support.

Abstract: Selective hydrogenation of a polyunsaturated hydrocarbon feed containing at least 2 carbon atoms per molecule and having an end point of 250° C. or less, by contacting said feed with a catalyst having an active phase of at least one metal from group VIII deposited on a support formed by at least one oxide, said catalyst being prepared using a process involving at least: i) contacting said support with at least one solution containing at least one precursor of metal from group VIII; ii) contacting said support with at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6?-(1,4)-bonded glucopyranose subunits; iii) calcining to obtain metal from group VIII in oxide form; i) and ii) possibly being carried out separately, in any order, or simultaneously.

Abstract: The present disclosure relates to a method for preparing a metal catalyst comprising at least one ligand that is coordinated to the metal through at least one phosphorous (P) atom and at least one nitrogen (N) atom, the method comprising reacting a metal pre-cursor complex with an acid ad salt of an aminophosphine, diaminophosphine, aminodiphosphine or diaminodiphosphine, in the presence of a base.

Abstract: The present invention relates to a process for the hydrogenation, in particular the selective hydrogenation of unsaturated hydrocarbon compounds, such as the selective hydrogenation of acetylene to ethylene, using a hydrogenation catalyst comprising an ordered intermetallic compound, namely an ordered cobalt-aluminum or iron-aluminum intermetallic compound. According to another aspect, the present invention relates to a catalyst comprising a support and at least one specific ordered cobalt-aluminum and/or iron-aluminum intermetallic compound supported thereon, as well as to the use of specific ordered intermetallic cobalt-aluminum and iron-aluminum intermetallic compounds as catalysts. The ordered cobalt-aluminum and iron-aluminum intermetallic compounds proved to be highly selective and long-term stable catalysts, e.g. in the selective hydrogenation of acetylene to ethylene in a large excess of ethylene.

Abstract: The invention relates to a process for selectively hydrogenating an alkyne to the corresponding alkene comprising a step of contacting a gaseous feed comprising hydrogen and 0.1 to 20 mass % of alkyne with a catalyst comprising at least one Group 10 element on a boron-modified support. The process shows high conversion and good selectivity, and can be stably operated also if the feed comprises more than 2 mass % of alkyne.

Abstract: A supported catalyst for selective hydrogenation of acetylenes comprising 3-15 wt. % Ni promoted with 0.005-0.2 Pd on a support. The catalyst is prepared by depositing nickel promoted with palladium on a support, containing one or more optional elements from copper, silver, Group IA (Li, Na, K, Rb, Cs, Fr) and Group IIA (Be, Mg, Ca, Sr, Ba, Ra) and B (Zn, Cd,) of the periodic table of elements and characterized as: Component Range of component Preferably wt. % wt. % Ni 3-15 ?4-11 Cu 0-I?? 0.0-0.6 Pd 0.005-0.2?? 0.01-0.1? Ag 0-10 0-5 Group IA ?0-2.5 ??0-1.5 Group IIA & B 0-25 0.1-5.

Abstract: This invention focuses on the specialized catalyst and/or additive for lower FCCU gasoline and diesel blendstock component sulfur content. This invention utilizes a specified ratio of the transition metal oxides of cobalt and molybdenum to accomplish gasoline and diesel blendstock sulfur reduction. This is accomplished by minimizing sulfur compound formation in the FCCU riser. The cobalt and molybdenum oxides in the presence of H2S from cracked organic sulfur compounds are converted to metal sulfides. A portion of the overall sulfur reduction in the gasoline and diesel blendstock occurs emitted NOx also is reduced.

Abstract: A process and the use of a process for desulphurizing a hydrocarbon feed is described which comprises at least one of the following steps: A a step for selective hydrogenation of diolefins present in said initial hydrocarbon feed, in the presence of a catalyst comprising a metal from group VIII of the periodic table on an inert support based on metal oxides, in the presence of a quantity of hydrogen which is in excess with respect to the stoichiometric value necessary for hydrogenating all of said diolefins, the mole ratio between the hydrogen and the diolefins being in the range 1 to 5; b) Extraction, using an appropriate solvent, of said hydrogenated fraction to obtain at least two cuts including: a raffinate comprising the majority of the olefins, paraffins and naphthenes and a reduced quantity of sulphur-containing compounds contained in the initial feed; a heavy fraction containing the heavy aromatic hydrocarbons and the majority of the sulphur-containing compounds contained in the initial feed; C

Abstract: A supported catalyst for selective hydrogenation of acetylenes comprising 3-15 wt. % Ni promoted with 0.005-0.2 Pd on a support. The catalyst is prepared by depositing nickel promoted with palladium on a support, containing one or more optional elements from copper, silver, Group IA (Li, Na, K, Rb, Cs, Fr) and Group IIA (Be, Mg, Ca, Sr, Ba, Ra) and B(Zn, Cd,) of the periodic table of elements and characterized as: Component Range of component Preferably wt. % wt. % Ni 3-15 ?4-11 Cu 0-I?? 0.0-0.6 Pd 0.005-0.2?? 0.01-0.1? Ag 0-10 0-5 Group IA ?0-2.5 ??0-1.5 Group IIA & B 0-25 0.

Abstract: The invention relates to a porous heterogeneous catalyst. In order to prepare a catalyst which catalyzes with a relatively high selectivity the hydrogenation of individual unsaturated bonds of polyunsaturated compounds it is proposed that the inner surface of the catalysts is coated with an ionic liquid.

Abstract: The invention concerns a process for preparing metallic nanoparticles with an anisotropic nature by using two different reducing agents, preferably with different reducing powers, on a source of a metal selected from columns 8, 9 or 10 of the periodic table of the elements.

Abstract: Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous support which has the following specific physical properties; BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 ? with or without modifiers of one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi.

Abstract: This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as solid electrolyte devices, e.g., in fuel cells, as sorbents, e.g. for hydrogen storage, and as catalysts. The invention also provides room temperature activation of dinitrogen, using the sieves as a catalyst, which permits ammonia production at room temperature.

Abstract: The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ratio of toluene hydrogenation activity to the cyclohexane isomerization activity is greater than 10.

Abstract: Compounds of the formula (I) and (Ia) in the form of racemates, mixtures of diastereomers or in essentially enantiomerically pure form, (I), (Ia), where R is hydrogen, C1-C8alkyl, C5-C12cycloakyl, phenyl or phenyl substituted by from 1 to 3 C1-C4alky or C1-C4alkoxy groups; n is 0 or an integer from 1 to 4 and R1 are identical or different substituents selected from the group consisting of C1-C4alkyl, C1-C4fluoroalkyl and C1-C4alkoxy; X1 and X2 are each, independently of one another, secondary phosphino; T is C6-C20arylene or C3-C16heteroarylene; and X2 is bound in the ortho position relative to the T-cyclopentadienyl bond.

Abstract: The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal complex, at least one reduction agent and at least one complexer and which has a pH value of more than 4 is brought into contact with the metallic support in order to deposit the platinum metal, the platinum metal being deposited in the form of discreet, immobilised particles. The invention also relates to the catalysts obtained using this method and to their use for producing hydrogen peroxide and for hydrogenating organic compounds.

Abstract: The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ratio of toluene hydrogenation activity to the cyclohexane isomerization activity is greater than 10.

Abstract: The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquids that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by contact with an aqueous solution of an oxidant and reusing the alloy for further desulfurization of additional sulfur laden liquid.

Abstract: The invention relates to catalysts comprising cobalt supported on a solid silica support and, in particular, to a method for manufacturing such catalysts. The catalysts may be prepared by slurrying a silica powder or impregnating a silica particle with a solution of a cobalt compound, cobalt amine carbonate, and aging the resulting slurry or solid at elevated temperature; the cobalt amine carbonate is decomposed and precipitated as basic cobalt carbonate onto the silica support. Preferably, the catalysts have a cobalt surface area in the range of 25 to >100 m2 per gram total cobalt. The catalyst may be used in hydrogenation reactions, Fischer-Tropsch reactions and oxidation reactions.

Abstract: A substantially hydrogenated and/or substantially dehalogenated polyalphaolefin homo- or copolymer is obtained by a hydrogenation/dehalogenation process employing hydrogen and a substantially amorphous catalyst containing a metal component on an inorganic material based support. The substantially hydrogenated/dehalogenated polyalphaolefin homo- or copolymers provided herein are useful for manufacturing a variety of products including lubricating oils in which the polyalphaolefin functions as a viscosity modifier.

Abstract: Carbon monolith-supported catalysts with high leach resistance used in catalytic applications involving strong acidic and basic conditions in a pH range of from 0 to 6.5 and from 7.5 to 14, are respectively described. The leach resistance of the catalyst system originates from strong interaction between the catalyst and the unsaturated valence of the carbon surface. In addition to surprisingly high resistance to leach out, the catalysts also have substantial differential advantages in catalyst performance: catalyst activity, selectivity, and stability.

Abstract: A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.

Abstract: The present invention pertains to a process for preparing a catalyst composition wherein at least one Group VIII non-noble metal component and at least two Group VIB metal components are combined and reacted in the presence of a protic liquid, after which the resulting composition is isolated and dried, the total of the Group VIII and Group VIB metal components, calculated as oxides, making up at least about 50 wt. % of the catalyst composition, calculated on dry weight. An organic oxygen-containing additive is added prior to, during, or subsequent to the combining and reacting of the metal components in such and amount that the molar ratio of the total amount of additive added to the total amount of Group VIII and Group VIB metal components is at least about 0.01. The invention also pertains to additive-containing catalysts obtained by this process, and to their use in hydroprocessing.

Abstract: This invention relates to a layered catalyst composition, a process for preparing the composition and processes for using the composition. The catalyst composition comprises an inner core such as alpha-alumina, and an outer layer bonded to the inner core composed of an outer refractory inorganic oxide such as gamma-alumina. The outer layer has uniformly dispersed thereon a platinum group metal such as platinum and a promoter metal such as tin. The composition also contains a modifier metal such as lithium. The catalyst composition shows improved durability and selectivity for dehydrogenating hydrocarbons.

Abstract: A composition and a process for using the composition in a selective hydrogenation of a highly unsaturated hydrocarbon such as, for example, an alkyne or diolefin, to a less unsaturated hydrocarbon such as, for example, an alkene or a monoolefin, are disclosed. The composition comprising palladium, a selectivity enhancer and an inorganic support wherein the palladium and selectivity enhancer are each present in a sufficient amount to effect the selective hydrogenation of a highly unsaturated hydrocarbon. Optionally, the composition can comprise silver. Also optionally, the palladium is present as skin distributed on the surface of the support. The composition can further comprise an alkali metal-containing compound such as, for example, potassium fluoride.

Abstract: In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100.degree. C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(l.times.h) in the presence of free hydrogen.

Abstract: The metal surface protected against metal-dusting corrosion has an insulating layer of a gas-permeable, thermally insulating material. The side of the thermal insulating layer that is colder during operation is in direct vicinity of the metal surface, and the side of the insulating layer that is hotter during operation is heated by a gas stream containing carbon monoxide, which in addition contains hydrogen and/or steam and has a temperature in the range from 300 to 1700.degree. C. In the region between the metal surface to be protected and the hot side of the insulating layer a catalyst is provided for reacting carbon monoxide with hydrogen and/or steam.

Abstract: For the conversion of an olefinic C.sub.4 or C.sub.5 cut to an alkyl-tertiobutylether or alkyl-tertioamylether and to propylene, by metathesis, the process comprises four successive steps: (1) selective hydrogenation of the diolefins with simultaneous isomerisation of the alpha olefins to internal olefins; (2) etherification of the isoolefins; (3) elimination of oxygen-containing impurities; (4) metathesis of internal olefins with ethylene. The process has application, e.g., to C.sub.4 and C.sub.5 steam cracking cuts.

Abstract: A process for the production of a diesel fuel includes contacting a feedstock comprising cracked stocks in the presence of hydrogen under conditions of elevated temperature and pressure with a first catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on a substantially non-acidic carrier, and then contacting at least a portion of the effluent from the first catalyst with a second catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on an acidic carrier. This process can produce diesel fuels having an improved cetane index and API gravity. The effluent from the second catalyst bed may be contacted with a third catalyst bed which contains a catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on a substantially non-acidic carrier.

Abstract: The invention is directed to a process for the production of cyclohexane by catalytic hydrogenation of benzene using hydrogen, said process comprising the hydrogenation of benzene in the presence of a supported nickel catalyst having a nickel content of at least 10 wt. %, calculated as nickel, said catalyst containing sulfur, or compounds thereof, as promotor.

Abstract: High space velocity catalysts useful in the substantial elimination of chloroprene and trichloroethylene from an industrial product stream of ethane dichloride; the last is useful in the production of vinyl chloride.

Abstract: The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.

Abstract: A process for selectively hydrogenating benzene in a hydrocarbon oil is disclosed. The process comprises reacting the hydrocarbon oil with hydrogen gas in the presence of a hydrogenation catalyst comprising at least one metal in Group VIII of the Periodic Table and an alkaline aqueous layer which contains zinc or a zinc compound. Benzene in hydrocarbon oils can be selectively converted into cyclohexane by the process, while suppressing the hydrogenation reaction of alkyl aromatic compounds which are important high octane materials for gasoline.

Abstract: The invention relates to a process for the selective hydrogenation of diolefins in steam cracking petrol in the presence of a nickel catalyst and is characterized in that prior to the use of the catalyst, a suphur-containing organic compound is incorporated into the catalyst outside of the reactor.

Abstract: This is a catalyst and a process for partially hydrogenating polycyclic and monocyclic aromatic hydrocarbons such as benzene, naphthalenes, biphenyls, and alkylbenzenes to produce the corresponding cycloolefins. The catalyst is a hydrogenation catalyst comprising ruthenium on a composite support. It is a process in which the product cycloolefin is produced in high yield and with high selectivity.

Abstract: The present invention provides a flow liquid-phase chemical reaction system in which a high pressure reservoir unit holds a solvent solution which contains an organic reactant and a gas reactant. The quantity of gas reactant dissolved in the solvent solution is determined by the level of gas reactant vapor pressure in the reservoir unit. The solvent solution is passed through a solid catalyst reactor unit to achieve a selective reaction between the two reactant components of the solvent solution.

Abstract: A process for selectively hydrogenating C.sub.4 -C.sub.10 diolefins to the corresponding monoolefins is carried out with a catalyst comprising (a) nickel metal and/or compound(s), (b) silver metal and/or compound(s), and (c) a solid inorganic support material (preferably alumina).

Abstract: A cobalt carbonyl phosphine complex useful for hydrogenation of cyclic polyenes to corresponding cyclic monoenes is prepared by reaction of dicobalt carbonyl and a phosphine compound in at least one non-oxygenated aliphatic solvent. Selective hydrogenation of the cyclic polyenes comprises an induction period during which the polyenes are contacted with the cobalt carbonyl complex catlayst under hydrogen pressure followed by decreasing the reaction temperature and pressure for a period of time sufficient to complete the hydrogenation.

Abstract: This invention concerns a process for reducing a refining catalyst before it is put into use, the catalyst containing a support and an active phase based on at least one noble or non-noble metal of group VIII or of group Ib of the periodic classification of elements, consisting of:(a) impregnating the catalyst with an aqueous or organic solution of a reducing agent,(b) decomposing the reducing agent by heating with a catalyst, and(c) drying the catalyst thus obtained.The catalyst is used in selective hydrogention of a feed such as olefin, acetylenes, diolefins etc.

Abstract: A process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups, is provided. In the process, reduced nickel is used as a catalyst and an ether or a mixture of an ether and a hydrocarbon is used as a solvent for the hydrogenation reaction whereby elimination of the group rarely occurs with a very high hydrogenation rate being attained.

Abstract: A process for producing a cycloolefin in high selectivity and yield by partial hydrogenation of a monocyclic armoatic hydrocarbon with hydrogen is disclosed. In this process, the hydrogenation reaction is carried out under a neutral or acidic condition in the presence of:(i) a particulate hydrogenating catalyst mainly comprising metallic ruthenium having an average crystallite size of 200 .ANG. or less,(ii) at least one zinc compound as a promoter,(iii) at least one additive selected from the group consisting of oxides, hydroxides and hydrates thereof Zr, Hf, Ti, Nb, Ta, Cr, Fe, Co, Al, Ga and Si, and(iv) water.

Abstract: Novel alumina-supported nickel boride catalysts prepared by the borohydride promoted reduction of nickel arsenate are described. Method of catalyst preparation and process for hydrogenation of acetylenic and diolefinic compounds employing the invention catalysts are also described.