Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of metal ions in at least one of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant as metal residuals. In the present disclosure, the metals can be recovered via ion-exchange, wherein an exchange resin is provided for a portion of the metal ions in the supernatant to be exchanged and bound onto the resin. The previously resin-bound metals can be subsequently recovered, or the effluent stream for the exchange resin column can also be recovered, forming at least a metal precursor feed which can be used in the co-precipitation reaction.

Abstract: A process for treating a carrier, or a precursor thereof, to at least partly remove impurities from the carrier, or the precursor thereof, comprising: contacting the carrier, or the precursor thereof, with a treatment solution comprising a salt in a concentration of at most 0.05 molar, wherein the salt comprises a cation and an anion, and wherein the cation is selected from ammonium, phosphonium, organic cations and combinations thereof, and wherein the anion is selected from organic anions, inorganic carboxylates, oxyanions of elements from Groups IIIA through VIIA of the Periodic Table of Elements, and combinations thereof; and separating at least part of the treatment solution from the carrier, or the precursor thereof.

Abstract: This invention relates to a catalyst for oxygenate synthesis to use for synthesizing an oxygenate from mixed gas containing hydrogen and carbon monoxide, the catalyst comprising, an (A) component: rhodium, a (B) component: manganese, a (C) component: an alkali metal, and a (Z) component: magnesium oxide.

Abstract: A catalyst unit is described comprising a cylinder with a length C and a diameter D, wherein said unit has five holes arranged in a pentagonal pattern extending longitudinally therethrough, with five flutes running along the length of the unit, said flutes positioned equidistant adjacent holes of said pentagonal pattern. The catalyst may be used particularly in steam reforming reactors.

Abstract: A catalyst unit is described in the form of a cylinder having a length C and diameter D, which has two or more flutes running along its length, wherein said cylinder has domed ends of lengths A and B, such that (A+B+C)/D is in the range 0.50 to 2.00, and (A+B)/C is in the range 0.40 to 5.00. The catalyst may be used particularly in reactions where hydrogen is a reactant such as hydroprocessing, hydrogenation, water-gas shift reactions, methanation, hydrocarbon synthesis by the Fischer-Tropsch reaction, methanol synthesis and ammonia synthesis.

Abstract: A catalyst unit is described in the form of a cylinder having a length C and diameter D, which has one or more holes extending therethrough, wherein said cylinder has domed ends of lengths A and B, such that (A+B+C)/D is in the range 0.50 to 2.00, and (A+B)/C is in the range 0.40 to 5.00. The catalyst or catalyst unit preferably has one or more flutes miming along its length. The catalyst may be used particularly in steam reforming reactors.

Abstract: This invention provides an exhaust gas purification catalyst, which can burn PM (particulate matter) at a temperature below the temperature required in the prior art technique and can realize a high PM combustion rate at elevated temperatures, and an exhaust gas purification apparatus using the exhaust gas purification catalyst. The exhaust gas purification catalyst comprises a composite oxide having oxygen release properties and Ag and a noble metal co-supported on the composite oxide. The exhaust gas purification catalyst and an exhaust gas purification apparatus (1) using the exhaust gas purification catalyst can increase the PM combustion rate at elevated temperatures and, at the same time, can burn PM at a temperature below the temperature required in the prior art technique. Further, fuel consumption loss caused by forced regeneration, EM deterioration, and catalyst deterioration can be suppressed, and, thus, the load on automobiles can be reduced.

Abstract: There is provided a method for production of a conjugated diene from a monoolefin having four or more carbon atoms by a fluidized bed reaction. The method for production of a conjugated diolefin includes bringing a catalyst in which an oxide is supported on a carrier into contact with a monoolefin having four or more carbon atoms in a fluidized bed reactor in which the catalyst and oxygen are present, wherein the method satisfies the following (1) to (3): (1) the catalyst contains Mo, Bi, and Fe; (2) a reaction temperature is in the range of 300 to 420° C.; and (3) an oxygen concentration in a reactor outlet gas is in the range of 0.05 to 3.0% by volume.

Abstract: A hydrogen absorbing and desorbing material formed by co-deposition of magnesium with a catalyst for the kinetic absorption and desorption of hydrogen. A hydrogen absorbing and desorbing material formed of an alloy of magnesium with a catalyst for the kinetic absorption and desorption of hydrogen in which the catalyst for the kinetic absorption and desorption of hydrogen forms a dispersed amorphous or nanocrystalline phase in the magnesium. A hydrogen absorbing and desorbing material having a catalytic surface formed by a process comprising the steps of depositing a layer of tantalum on the hydrogen absorbing and desorbing material and depositing a layer of palladium on the layer of tantalum. A hydrogen absorbing and desorbing material comprises a multilayer film having at least two layers of magnesium and at least two layers of catalyst for the kinetic absorption and desorption of hydrogen, in which the multilayer film comprises alternating layers of magnesium and catalyst.

Abstract: A process is described for producing a powder batch comprises a plurality of particles, wherein the particles include (a) a first catalytically active component comprising at least one transition metal or a compound thereof; (b) a second component different from said first component and capable of removing oxygen from, or releasing oxygen to, an exhaust gas stream; and (c) a third component different from said first and second components and comprising a refractory support. The process comprises providing a precursor medium comprising a liquid vehicle and a precursor to al least one of said components (a) to (c) and heating droplets of said precursor medium carried in a gas stream to remove at least part of the liquid vehicle and chemically convert said precursor to said at least one component.

Abstract: The present disclosure relates to a catalyst for oxidative coupling of methane, specifically, it relates to a catalyst for oxidative coupling of methane comprising: a magnesium titanium oxide support comprising a mixed oxide of magnesium and titanium; and sodium tungstate and manganese oxide supported on the support, a method for preparing the same, and a method for oxidative coupling of methane. The catalyst for oxidative coupling according to the present disclosure, wherein a mixed oxide of magnesium and titanium is used as the support of the catalyst, is capable of providing significantly improved catalytic activity and C2 hydrocarbon yield as compared to pure magnesium oxide or titanium oxide. By preparing the oxide support not by a physical process but by a chemical sol-gel process, a catalyst for oxidative coupling with a peculiar crystal structure not found in a single oxide support can be provided.

Abstract: A composite material includes an aggregate which contains a first metal particle constituting a core and second metal oxide particulates surrounding the first metal particle and having an average primary particle diameter ranging from 1 to 100 nm.

Abstract: A composite oxide for a hydrocarbon reforming catalyst which maintains the catalytic activity at a high level over a long period of time, a process for producing the catalyst, and a process for producing syngas using the catalyst, are provided. The composite oxide for a hydrocarbon reforming catalyst is obtained by a process including preparing a mixed solution for impregnation which contains catalytic active components of Co, or Co and Ni, one or more oxidation resistance enhancing components selected from the elements of Group 3B and the elements of Group 6A of the Periodic Table, and one or more additive metal components selected from Ca and Mg; impregnating a carrier formed from a porous molded body selected from magnesia and a composite of magnesia and calcia, with the mixed solution for impregnation; drying the impregnated carrier; and calcining the dried carrier in an oxidizing atmosphere.

Abstract: The present invention relates to a catalyst. The catalyst is used for converting acetic acid to ethanol. The catalyst comprises platinum, tin, a base metal selected from calcium and/or tungsten and a promoter metal selected from barium, potassium and/or cesium.

Abstract: The present disclosure provides a hydrogenation catalyst, the preparation process thereof and the application thereof in the production of 1,4-butanediol by hydrogenating dialkyl maleate and/or dialkyl succinate. The catalyst comprises Cu—Al-A-B-G, wherein A comprises at least one of Zn. Mo and W, B comprises at least one of Ba, Mn, Mg, Ti, Ce and Zr. In the process for preparing said hydrogenation catalyst, a part of Cu and A are precipitated first and the rest of Cu, Al and B are precipitated successively.

Abstract: Compositions, electrodes, systems, and/or methods for water electrolysis and other electrochemical techniques are provided. In some cases, the compositions, electrodes, systems, and/or methods are for electrolysis which can be used for energy storage, particularly in the area of energy conversion, and/or production of oxygen, hydrogen, and/or oxygen and/or hydrogen containing species. In some embodiments, the water for electrolysis comprises at least one impurity and/or at least one additive which has little or no substantially affect on the performance of the electrode.

Abstract: A composite anode material for a solid oxide fuel cell (SOFC), an anode for a SOFC including a Ni-containing alloy including Ni and a transition metal other than Ni; and a perovskite metal oxide having a perovskite structure.

Abstract: The invention is directed to a catalyst and a method for making a reforming catalyst for the production of hydrogen from organic compounds that overcomes the problems of catalyst poisoning and deactivation by coking and high temperature sintering, yet provides excellent durability and a long working life in process use. An embodiment is the formation of a unique four-metal ion hexa-aluminate of the formula M1aM2bM3cM4dAl11O19-?. M1 and M2 are selected from the group consisting of beryllium, magnesium, calcium, strontium, barium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, and gadolinium. M3 and M4 are selected from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, tungsten, rhenium, osmium, iridium, platinum, wherein 0.010?a+b+c+d?2.0. Also, 1???1. Further, M1?M2 and M3?M4.

Abstract: A method of preparing multicomponent bismuth molybdate catalysts composed of four metal components and a method of preparing 1,3-butadiene using the catalyst, and particularly, to multicomponent bismuth molybdate catalysts composed of a divalent cationic metal, a trivalent cationic metal, bismuth and molybdenum, a preparation method thereof, and a method of preparing 1,3-butadiene from a C4 mixture including n-butene and n-butane using oxidative dehydrogenation are described.

Abstract: The present invention is directed to a granulate having photocatalytic activity, comprising particles of an inorganic particulate material coated with a photocatalytically active compound for introducing photocatalytic activity into or on building materials. The invention is further related to the manufacture of such a granulate and its use into or on building materials such as cement, concrete, gypsum and/or limestone and water-based coatings or paints for reducing an accumulation and growth of microorganisms and environmental polluting substances on these materials and thus reducing the tendency of fouling, while the brilliance of the color is maintained and the quality of the air is improved.

Abstract: It is an object of the present invention to provide a mixed catalyst for a vapor-phase catalytic oxidation or a vapor-phase catalytic ammoxidation reaction of propane or isobutane, capable of providing a corresponding unsaturated acid or unsaturated nitrile at high yield from propane or isobutane. A mixed catalyst for a vapor-phase catalytic oxidation reaction or a vapor-phase catalytic ammoxidation reaction of propane or isobutane comprises: (a) a composite oxide represented by the following composition formula (1): Mo1VaNbbSbcWdZeOn??(1) wherein Z represents at least one element selected from the group consisting of La, Ce, Pr, Yb, Y, Sc, Sr, and Ba; each of a, b, c, d, e, and n represents an atomic ratio of each element based on Mo atom; a is in a range of 0.01?a?1; b is in a range of 0.01?b?1; c is in a range of 0.01?c?1; d is in a range of 0.

Abstract: A process is provided for producing a complex oxide catalyst which exhibits superior catalytic activity in a vapor phase catalytic oxidation reaction, particularly in production of unsaturated aldehyde and unsaturated carboxylic acid. The process is characterized by the steps of preparing an aqueous slurry by mixing a complex oxide containing molybdenum and cobalt with an acid and water; drying the aqueous slurry; and calcining the resulting dried solid. Preferably, the complex oxide is obtained as follows: a molybdenum- and cobalt-containing complex oxide catalyst which has been used in a vapor phase catalytic oxidation reaction is mixed with an aqueous extracting solution obtained by dissolving at least one of ammonia and an organic base in water, to thereby extract molybdenum and cobalt into the aqueous phase; and the aqueous phase is dried and is then calcined under an atmosphere of an oxidizing gas.

Abstract: An exhaust gas purifying catalyst (1) is composed of: a noble metal (2); a first compound (3); and a second compound (4). The noble metal (2) is supported on the first compound (3). The exhaust gas purifying catalyst (1) includes units having a structure in which the first compound (3) supporting the noble metal (2) is surrounded by the second compound (4), and the first compound (3) supporting the noble metal (2) is isolated from one another by the second compound (4). The noble metal (2) is one or more selected from [Pt, Pd and Rh], the first compound (3) contains Ti as a main component, and the second compound (4) contains, as a main component, one or more selected from [Al and Si].

Abstract: The present invention provides a preparation process of complex oxides catalyst containing Mo, Bi, Fe and Co, which comprising steps as following: dissolving precursor compounds of the components for catalyst and complexing agent in water to obtain a solution, and then drying, molding and calcining the solution to obtain catalyst. The catalyst is used for gas phase oxidation of light alkenes to unsaturated aldehydes. The catalyst has high activity, selectivity and stability. The reaction condition is mild. The preparation process of the catalyst is easy to operate and can be used for mass production.

Abstract: A catalyst for use in the production of an unsaturated aldehyde and/or an unsaturated carboxylic acid, the catalyst comparing (or, preferably, being composed of) a mixed oxide containing molybdenum, bismuth and iron, which has improved mechanical strength, is produced by a method including the steps of (1) drying an aqueous solution or an aqueous slurry containing raw materials of the catalyst and then firstly calcining a dried product in a molecular oxygen-containing gas atmosphere to obtain a calcined product; (2) heating the calcined product obtained in Step (1) in the presence of a reducing material to obtain a reduced product having a mass loss of 0.05 to 6%; and (3) secondly calcining the reduced product obtained in Step (2) in a molecular oxygen-containing gas atmosphere.

Abstract: A supported catalyst composition suitable for use in converting synthesis gas to alcohols comprises a catalytic metal, a catalyst promoter and a catalyst support.

Abstract: The present invention relates to a novel composite metal oxide catalyst, a method of making the catalyst, and a process for producing synthesis gas using the catalyst. The catalyst may be a nickel and cobalt based dual-active component composite metal oxide catalyst. The catalyst may be used to produce synthesis gas by the carbon dioxide reforming reaction of methane. The catalyst on an anhydrous basis after calcinations has the empirical formula: M a m + ? N b n + ? Al c 3 + ? Mg d 2 + ? O ( am 2 + bn 2 + 3 2 ? c + d ) Mm+ and Nn+ are two transition metals serving as dual-active components and selected from the group consisting of Ni, Co, Fe, Mn, Mo, Cu, Zn or mixtures thereof, a+b+c+d=1, and 0.001?a?0.8, 0.001?b?0.8, 0.1?c?0.99, 0.01?d?0.99.

Abstract: A catalyst material for preparing nanotubes, especially carbon nanotubes, said material being in the form of solid particles, said particles including a porous substrate supporting two superposed catalytic layers, a first layer, directly positioned on the substrate, including at least one transition metal from column VIB of the Periodic Table, preferably molybdenum, and a second catalytic layer, positioned on the first layer, comprising iron. Also, a process for preparing same and to a process for the synthesis of nanotubes using this catalyst material.

Abstract: A method for preparing a catalyst comprising (i) preparing a calcined shaped calcium aluminate catalyst support, (ii) treating the calcined shaped calcium aluminate support with water, and then drying the support, (iii) impregnating the dried support with a solution containing one or more metal compounds and drying the impregnated support, (iv) calcining the dried impregnated support, to form metal oxide on the surface of the support and (v) optionally repeating steps (ii), (iii) and (iv) on the metal oxide coated support. The method provides an eggshell catalyst in which the metal oxide is concentrated in an outer layer on the support.

Abstract: A particulate, heterogeneous solid CO2 absorbent composition, comprising decomposition products of Ca3Al2O6 after having been heated to a temperature between 500° C. and 925° C. in the presence of H2O and CO2 for a period of time sufficient to allow the Ca3Al2O6 to react and form the particulate, heterogeneous absorbent composition which exhibits a higher concentration of aluminium than calcium in the particle core but a higher concentration of calcium than aluminium at the particle surface. The invention also comprises a method for preparing the particulate, heterogeneous product as well as a method for utilizing the composition for separating CO2 from a process gas.

Abstract: The present invention is an improved cyclic, endothermic hydrocarbon conversion process and a catalyst bed system for accomplishing the same. Specifically, the improved process comprises reacting a hydrocarbon with a multi-component catalyst bed in such a manner that the temperature within the catalyst bed remains within controlled temperature ranges throughout all stages of the process. The multi-component catalyst bed comprises a reaction-specific catalyst physically mixed with a heat-generating material.

Abstract: A hydrocarbon-reforming catalyst comprising a composite oxide having a composition represented by the following formula (I) in which Co, Ni and M are dispersed in the composite oxide and a process for producing a synthesis gas by using the catalyst are provided. aM.bCo.cNi.dMg.eCa.fO??(I) wherein a, b, c, d, e, and f are molar fractions, a+b+c+d+e=1, 0.0001<a?0.20, 0<b?0.20, 0?c?0.20, 0.001<(b+c)?0.20, 0.60?(d+e)?0.9989, 0<d<0.9989, 0<e<0.9989, f=the number necessary for element to keep charge equilibrium with oxygen. And M is at least one element among Group 3B elements and Group 6A elements in the Periodic Table. The reforming catalyst is able to maintain a high catalytic activity over a long period in reforming hydrocarbons.

Abstract: A catalyst is provided and includes fine catalyst particles of a composition represented by formula (1): PtuRuxTayTz, in which T is at least one element selected from the group consisting of Hf, W, Ni, and V; u, x, y, and z are 10 to 98.9 atm %, 0.1 to 50 atm %, 0.5 to 35 atm %, and 0.5 to 35 atm %, respectively, or formula (2): PtuRuxTayTz, in which T is at least one element selected from the group consisting of Ct, Mo, Nb, Zr, and T; u, x, y, and z are 40 to 70 atm %, 0.1 to 50 atm %, 0.5 to 15 atm %, and 0.5 to 15 atm %, respectively.

Abstract: An alumina support comprises alpha-alumina as the main crystal phase of its backbone, and having a specific surface area of no higher than 3.0 m2/g, a pore volume ranging from 0.3 ml/g to 0.8 ml/g, an alkaline earth metal content ranging from 0.05% to 2.0% by weight of the support, wherein the support has such properties that treating the support with an aqueous oxalic acid solution having a concentration ranging from 0.4% to 2.0% by weight and having twice the weight of the support for 30 minutes can produce a leach liquor having an aluminum content of no higher than 60 ?g/mL, a sodium content of no higher than 20 ?g/mL, and a silicon content of no higher than 40 ?g/mL. Processes for preparing the alumina support, silver catalysts comprising the alumina support, and methods of preparing ethylene oxide by ethylene oxidation using the silver catalyst are also disclosed herein.

Abstract: The invention relates to a multilayer catalyst for the partial oxidation of hydrocarbons in gaseous phase, comprising a monolithic ceramic or metallic substrate having a solid macroporous structure consisting of one or more structures, on which a first active layer with a crystal-line perovskitic structure is deposited, having general formula AxA? 1-xByB? 1-YO3±? wherein: A is a cation of at least one of the rare earth elements, A? is a cation of at least one element selected from groups Ia, IIa and VIa of the periodic table of elements, B is a cation of at least one element selected from groups IVb, Vb, VIb, VIIb, or VIII of the periodic table of elements, B? is a cation of at least one element selected from groups IVb, Vb, VIb, VIIb or VIII of the periodic table of elements Mg2+ or Al3+, x is a number which is such that 0?x?1, y is a number which is such that 0?y?1, and ? is a number which is such that 0???0, 5, a second more external active layer consisting of a dispersion of a noble metal and a possible s

Abstract: A photocatalyst dispersion element includes: a photocatalytic material; a solvent; and an ion additive. The ion additive generates a cation having a smaller ion radius than a tetramethylammonium ion in the solvent.

Abstract: The present invention relates to a catalyst composition for the synthesis of thin multi-walled carbon nanotube(MWCNT). More particularly, this invention relates to a multi-component metal catalyst composition comprising i) main catalyst of Co and Al, ii) inactive support of Mg and iii) optional co-catalyst at least one selected from Ni, Cr, Mn, Mo, W, Pb, Ti, Sn, or Cu. Further, the present invention affords thin multi-walled carbon nanotube having 5˜20 nm of diameter and 100˜10,000 of aspect ratio in a high yield.

Abstract: A process for preparing supported catalyst in pellet or coated monolith form is disclosed the method includes the steps of: forming a mixed metal carbonate complex having at least two metals by subjecting a first metal carbonate containing compound to ion exchange with desired metal cations; heat treating the resulting mixed metal carbonate complex to form a mixed oxide which consists of active metal oxides supported on a catalyst support; forming the resulting supported catalysts into pellets or coating the resulting supported catalyst onto a monolithic support. The catalysts may be used for treating effluents containing organic material in the presence of an oxidising agent.

Abstract: Carried catalysts for producing alcohols from gaseous mixtures containing hydrogen and carbon monoxide, e.g., syngas, are made from precursors of a particulate inert porous catalyst substrate impregnated with the oxides or salts of molybdenum, cobalt, and a promoter alkali or alkaline earth metal, in a molybdenum to cobalt molar ratio of from about 2:1 to about 1:1, preferably about 1.5:1, and in a cobalt to alkali metal molar ratio of from about 1:0.08 to about 1:0.30, preferably about 1:0.26-0.28. The catalysts are “activated” by reducing the catalyst precursor material in a reducing environment at from about 600° C. to about 900° C., preferably about 800° C. Alcohols are produced by passing gas mixtures containing at least CO and H2 in ratios of from 1:1 to 3:1 through a reactor containing the catalyst, at from about 240° C. to about 270° C., and a pressure of 1000-1200 psi.

Abstract: A pyrochlore-type oxide represented by a general formula A2B2O7-Z is prepared by precipitate formation, where A and B each represent a metal element, where Z represents a number of at least 0 and at most 1, where A contains at least one element selected from a group consisting of Pb, Sn, and Zn, and where B contains at least one element selected from a group consisting of Ru, W, Mo, Ir, Rh, Mn, Cr, and Re. Impurities are then sufficiently removed through washing and drying processes, and the pyrochlore-type oxide is calcined under controlled conditions. This allows the crystallinity of the pyrochlore-type oxide, which contained amorphous parts immediately after the production of the precipitate, to be increased so that the resistance to acid can be improved while preventing particle aggregation.

Abstract: A dehydrogenation catalyst is described comprising an iron oxide, an alkali metal or compound thereof, and silver or a compound thereof. Further a process is described for preparing a dehydrogenation catalyst that comprises preparing a mixture of iron oxide, an alkali metal or compound thereof, and silver or a compound thereof and calcining the mixture. A process for dehydrogenating a dehydrogenatable hydrocarbon and a process for polymerizing the dehydrogenated hydrocarbon are also described.

Abstract: The present invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube with high yields using the spray pyrolysis method. More particularly, this invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube comprising the steps of i) dissolving multi-component metal precursors of catalyst composition in de-ionized water; ii) spraying obtained catalytic metal precursor solution into the high temperature reactor by gas atomization method; iii) forming the catalyst composition powder by pyrolysis of gas atomized material; and iv) obtaining the catalyst composition powder, wherein said catalyst composition comprises i) main catalyst selected from Fe or Co, ii) Al, iii) optional co-catalyst at least one selected from Ni, Cu, Sn, Mo, Cr, Mn, V, W, Ti, Si, Zr or Y, iv) inactive support of Mg. Further, the catalyst composition prepared by this invention has a very low apparent density of 0.01˜0.

Abstract: A stationary or fluid bed dehydrogenation catalyst containing an alumina carrier, with chromium and alkali metals consisting of only sodium and potassium, added as promoters. The resultant catalyst demonstrates greater selectivity and olefin yield than prior art dehydrogenation catalysts, especially after aging.

Abstract: Disclosed is a catalyst which can be used in the process for producing hydrogen by decomposing ammonia, can generate heat efficiently in the interior of a reactor without requiring excessive heating the reactor externally, and can decompose ammonia efficiently and steadily by utilizing the heat to produce hydrogen. Also disclosed is a technique for producing hydrogen by decomposing ammonia efficiently utilizing the catalyst. Specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising an ammonia-combusting catalytic component and an ammonia-decomposing catalytic component. Also specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising at least one metal element selected from the group consisting of cobalt, iron, nickel and molybdenum.

Abstract: Process for the preparation of a catalytic specie consisting essentially of a metallic support, which is coated with a ceramic active phase layer, mainly compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An?z/n)kH2O,??(I) wherein An? is mainly a silicate or a polysilicate anion; 0?x?0.3; 0?y?0.9; 0?l?0.9; 0?m?0.5; 0?k?10; x+y>0; 0.5?y+l?0.9; x+y+l+m=1; and z is the total electrical charge of the cationic element or a compound of the general formula (II): [AzA?1-z][B1-x-yNixRhy]O3-???(II) wherein A and A? are different and are selected from the Lanthanide or the Actinide families or from the group IIa of the Mendeleev's periodical table of elements; B is selected from the transition metal groups of columns IIIb, IVb, Vb, VIb, VIIb, Ib and IIb and group VIIIb of the Mendeleev's periodical table of elements; 0?x?0.7, 0?y?0.5, 0?x+y?0.

Abstract: A supported catalyst with a solid sphere structure of the present invention includes an oxide supporting body and a metal such as Ni, Co, Fe, or a combination thereof distributed on the surface and inside of the supporting body. The supported catalyst with a solid sphere structure can maintain a spherical shape during heat treatment and can be used with a floating bed reactor due to the solid sphere structure thereof.

Abstract: A bulk metal oxide catalyst composition of the general formula (X)b(M)c(Z)d(O)e??(I) wherein X represents at least one non-noble Group VIII metal; M represents at least one non-noble Group VIb metal; Z represents one or more elements selected from aluminum, silicon, magnesium, titanium, zirconium, boron, and zinc; one of b and c is the integer 1; and d and e and the other of b and c each are a number greater than 0 such that the molar ratio of b:c is in the range of from 0.5:1 to 5:1, the molar ratio of d:c is in the range of from 0.2:1 to 50:1, and the molar ratio of e:c is in the range of from 3.7:1 to 108:1; is prepared by controlled (co)precipitation of component metal compounds, refractory oxide material, and alkali compound in protic liquid. Resulting compositions find use in hydrotreatment processes involving particularly hydrodesulphurization and hydrodenitrification.

Abstract: A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.

Abstract: The invention relates to a process for recovering Group VIB metals from a catalyst, in particular a spent bulk catalyst, comprising one or more Group VIB metals and one or more Group VIII metals. Further, the invention relates to a solid Group VIB metal compound obtainable by the process according to the invention having the general formula H2XO4, wherein X=W1-yMoy, wherein y is between 0 and 1 and to its use in a process for the manufacture of a fresh catalyst.

Abstract: A catalyst has a long life span and efficiently separates hydrogen from water. A first metal element (Ni, Pd, Pt) for cutting the combination of hydrogen and oxygen and a second metal element (Cr, Mo, W, Fe) for helping the function of the first metal element are melted in alkaline metal hydroxide or alkaline earth metal hydroxide to make a mixture heated at a temperature above the melting point of the hydroxide to eject fine particles from the liquid surface, bringing steam into contact with the fine particles. Instead of this, a mixture of alkaline metal hydroxide and metal oxide is heated at a temperature above the melting point of the alkaline metal hydroxide to make metal compound in which at least two kinds of metal elements are melted, and fine particles are ejected from the surface of the metal compound to be brought into contact with steam.