Process For Producing Catalyst For Methacrylic Acid Production And Process For Producing Methacrylic Acid

An object of the present invention is to provide a process for stably producing a catalyst for methacrylic acid production exhibiting high activity and high performance. The process for producing a catalyst for methacrylic acid production of the invention is characterized in that the water content of the catalyst ingredient powder for use in molding, temperature and humidity of a molding step, humidity and temperature of a baking step are individually controlled in the case where molding is performed by a coating method using an Mo—V—P—Cu-based hetero polyacid as an active ingredient and water or an alcohol and/or an aqueous solution of an alcohol as a binder.

Catalyst for producing unsaturated aldehyde and/or unsaturated carboxylic acid, and process for producing unsaturated aldehyde and/or unsaturated carboxylic acid using the catalyst

Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 μm and another inorganic fiber having an average diameter not more than 6 μm.

Complex Oxide Catalyst of Bi/Mo/Fe for the Oxidative Dehydrogenation of 1-Butene to 1,3-Butadiene and Process Thereof

The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity. 1. A process of preparing Bi/Mo/Fe complex metal oxide catalyst for the preparation of 1 ,3-butadiene , the process comprising:(a) mixing a Bi precursor solution and a Fe precursor solution;(b) adding the mixed solution to a Mo precursor solution and adjusting the pH with a basic solution;(c) conducting a hydrothermal reaction of the pH-adjusted solution to provide a product of the hydrothermal reaction; and(d) drying and calcining the product.2. The process of claim 1 , wherein the Bi precursor solution is a mixed solution of bismuth nitrate (Bi(NO).5HO) and nitric acid; or a mixed solution of bismuth acetate (Bi(CHCO)) and acetic acid.3. The process of claim 1 , wherein the Fe precursor solution is a mixed solution of iron nitrate (Fe(NO).9HO) and nitric acid; or a mixed solution of iron chloride (FeCl.4HO) and hydrochloric acid.)4. The process of claim 1 , wherein the Mo precursor solution is a mixed solution comprising ammonium molybdate ((NH)MoO.4HO).5. The process of claim 1 , wherein the basic solution is one or more selected from the group consisting of ammonia water claim 1 , sodium carbonate and potassium carbonate solution.6. The process of claim 1 , wherein the value is adjusted in the range of 3-9.7. The process of claim 1 , wherein the BMF catalyst is calcined at 450-750° C.8. The process of claim 1 , wherein the oxidative dehydrogenation is conducted at 350-450° C. and a WHSV of 1.0-5.0. This application is a division of U.S. patent application Ser. No. 12/577,869 filed Oct. 13, 2009 which claims priority to Korean Patent Application No. 10-2008-0102154 filed Oct. 17, 2008, the entire ...

METHOD FOR PREPARING HYDROREFINING CATALYST

A method for preparing hydrorefining catalyst comprises the following steps: (1) mixing an aqueous ammonia solution with a polyamine complexing agent to form a mixed solvent; (2) adding a cobalt salt to the mixed solvent, dissolving the cobalt salt, and then adding a molybdenum salt and optional salts of other active components, and dissolving them to prepare an impregnating solution; and (3) impregnating a support with the impregnating solution, followed by aging, drying, and activating the impregnated support to form a hydrorefining catalyst. The hydrorefining catalyst prepared by this method has good activity, selectivity and stability in use. 1. A method for preparing hydrorefining catalyst , comprising:supporting active components on a support, the active components comprising cobalt and molybdenum, wherein mixing an aqueous ammonia with a polyamine complexing agent to form a mixed solvent;adding a salt comprising the active component cobalt to the mixed solvent, dissolving the cobalt salt, and then adding a molybdenum salt or a molybdenum salt and salts of other active components and promoters, and dissolving them to prepare an impregnation solution; andimpregnating a support with the impregnating solution, followed by aging, drying and activating the impregnated support to obtain the hydrorefining catalyst.2. The method for preparing hydrorefining catalyst according to claim 1 , wherein a nickel salt claim 1 , a tungsten salt and/or a soluble alkali or carbonate compound of a Group IA element is added during formulation of the impregnation solution.3. The method for preparing hydrorefining catalyst according to claim 1 , wherein the impregnation solution has a pH value of above 10 claim 1 ,4. The method for preparing hydrorefining catalyst according to claim 1 , wherein the polyamine complexing agent is one or more of EDTA claim 1 , triethylene tetramine claim 1 , triethanolamine and ethylenediamine.5. The method for preparing hydrorefining catalyst according ...

METHOD FOR PRODUCING UNSATURATED NITRILE

A method for producing an unsaturated nitrile by subjecting propane to a vapor-phase catalytic ammoxidation reaction using a fluidized bed reactor in the presence of a composite oxide catalyst containing Mo, V, and Nb, the method comprising the step of: 1. A method for producing an unsaturated nitrile by subjecting propane to a vapor-phase catalytic ammoxidation reaction using a fluidized bed reactor in the presence of a composite oxide catalyst containing Mo , V , and Nb , wherein the method comprising a step of:adding a tungsten compound into the fluidized bed reactor to adjust a molar ratio (W/Mo ratio) of a tungsten contained in the tungsten compound to a molybdenum contained in the composite oxide catalyst that exist within the fluidized bed reactor so that the molar ratio is in a range of 0.0001 to 0.1.2. The method for producing the unsaturated nitrile according to claim 1 , comprising a step of adding a molybdenum compound into the fluidized bed reactor.4. The method for producing the unsaturated nitrile according to or claim 1 , wherein the composite oxide is carried on 20 to 70% by mass of silica based on a whole amount of the catalyst in terms of SiO. 1. Field of the InventionThe present invention relates to a method for subjecting propane to a vapor-phase catalytic ammoxidation reaction to produce a corresponding unsaturated nitrile.2. Description of the Related ArtIt is conventionally known that a method for subjecting propylene to a vapor-phase catalytic ammoxidation reaction to produce a corresponding unsaturated nitrile. In recent years, attention has been directed to a method for subjecting propane instead of propylene to a vapor-phase catalytic ammoxidation reaction to produce a corresponding unsaturated nitrile.Hitherto, in subjecting propane to a vapor-phase catalytic ammoxidation to produce a corresponding unsaturated nitrile, various techniques have been examined, for example, a technique for adding a molybdenum compound into a reactor during ...

BULK CATALYST COMPOSITION COMPRISING BULK METAL OXIDE PARTICLES

The invention relates to a process for preparing bulk metal oxide particles comprising the steps of combining in a reaction mixture (i) dispersible nanoparticles having a dimension of less than about 1 μm upon being dispersed in a liquid, (ii) at least one Group VIII non-noble metal compound, (iii) at least one Group VIB metal compound, and (iv) a protic liquid; and reacting the at least one Group VIII non-noble metal compound and the at least one Group VIB metal in the presence of the nanoparticles. It also relates to bulk metal hydroprocessing catalysts obtainable by such method. 1. A process for preparing bulk metal oxide particles comprising the steps of combining in a reaction mixture (i) dispersible nanoparticles having a dimension of less than about 1 μm upon being dispersed in a liquid , (ii) at least one Group VIII non-noble metal compound , (iii) at least one Group VIB metal compound , and (iv) a protic liquid; and reacting the at least one Group VIII non-noble metal compound and the at least one Group VIB metal in the presence of the nanoparticles , wherein said nanoparticles are different in composition from said at least one Group VIII non-noble metal compound and said at least one Group VIB metal compound.2. The process according to claim 1 , wherein the nanoparticles are clay mineral particles.3. The process according to or claim 1 , wherein at least one Group VIII non-noble metal compound and at least two Group VIB metal compounds are combined in the reaction mixture.4. The process according to any one of or claim 1 , wherein the reaction mixture further comprises a Group V metal compound.5. The process according to any one of or claim 1 , wherein the metal compounds are at least partly in the solid state during the process.6. The process according to any one of or claim 1 , wherein the nanoparticles are added to the reaction mixture after the metal compounds.8. The process according to claim 7 , wherein the at least one Group VIII non-noble metal ...

CALCINATION APPARATUS, PROCESS FOR PRODUCING OXIDE CATALYST, AND PROCESS FOR PRODUCING UNSATURATED ACID OR UNSATURATED NITRILE

Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove. 1. A calcination apparatus , comprising:a calcination tube having open ends at both terminals;a pair of hoods, each hood covering each open end of the calcination tube; anda pair of rings, each ring sealing a gap between the calcination tube and the hood,wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube;a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood;a sealed chamber surrounded by the hood and the groove is formed; andboth the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.2. The calcination apparatus according to claim 1 , further comprising a pair of flanges claim 1 , each flange protruding from an inner surface of the hood toward an inside in a circumferential direction of the calcination tube claim 1 ,wherein each of the both sides of the groove is in contact with each of the pair of flanges.3. A calcination apparatus claim 1 , comprising:a calcination tube having open ends at both terminals;a pair of hoods, each hood covering each open end of the calcination tube; anda pair of rings, each ring sealing a gap between the ...

CATALYST FOR PREPARING ACROLEIN AND ACRYLIC ACID, AND PREPARATION METHOD THEREOF (AS AMENDED)

The present invention relates to a catalyst for preparing acrolein and acrylic acid, and a preparation method thereof. The catalyst according to the present invention can be uniformly packed in a reactor and the collapse of the catalyst can be minimized because it has excellent mechanical properties, and it can be stably used for a long period of time. 1. A catalyst for preparing acrolein and acrylic acid ,including an inert supporting material and a catalyst layer coated on the supporting material, wherein the catalyst layer includes a mixture of an catalytic active ingredient including at least molybdenum (Mo) and bismuth (Bi), and an inorganic fiber, and {'br': None, 'i': 'L/D≦', '0.1≦0.2\u2003\u2003[Relational Equation]'}, 'satisfying the following Relational Equationwherein, in said Relational Equation, L is the number average length of the inorganic fiber, and D is the average thickness of the coated catalyst layer.2. The catalyst according to claim 1 , wherein the catalytic active ingredient is represented by the following Chemical Formula 1:{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'MoBiABCO\u2003\u2003[Chemical Formula 1]'}wherein, in Chemical Formula 1,Mo is molybdenum; Bi is bismuth; A is one or more elements selected from the group consisting of Fe, Zn, Mn, Nb, and Te; B is one or more elements selected from the group consisting of Co, Rh, and Ni; C is one or more elements selected from the group consisting of Na, K, Li, Cs, Ta, Ca, Rb, and Mg; O is oxygen; anda, b, c, d, e, and f are atomic ratios of each element, wherein b is 0.1 to 10, c is 0.1 to 10, d is 0.1 to 15, e is 0.001 to 10, and f is a number determined according to the oxidation state of each element, when a=12.3. The catalyst according to claim 1 , wherein the inorganic fiber is one or more fibers selected from the group consisting of glass fiber claim 1 , silica fiber claim 1 , alumina fiber claim 1 , and silica-alumina fiber.4. The catalyst according to claim 1 , wherein the ...

CATALYST FOR FLUIDIZED BED AMMOXIDATION REACTION, AND METHOD FOR PRODUCING ACRYLONITRILE

A catalyst for a fluidized bed ammoxidation reaction containing silica and a metal oxide, wherein a composite of the silica and the metal oxide is represented by the following formula (1). 1. A catalyst for a fluidized bed ammoxidation reaction comprising:silica anda metal oxide, wherein {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '2', 'A, 'MoBiFeNiCoCeCrXO/(SiO)\u2003\u2003(1);'}, 'a composite of the silica and the metal oxide is represented by the following formula (1){'sub': '2', 'claim-text': [{'br': None, 'i': a', 'b+f', 'c+d, 'α=1.5/(1.5()+) \u2003\u2003(2);'}, {'br': None, 'i': b+f', 'c+d, 'β=1.5()/() \u2003\u2003(3); and'}, {'br': None, 'i': 'd/c', 'γ=\u2003\u2003(4).'}], 'wherein Mo represents molybdenum, Bi represents bismuth, Fe represents iron, Ni represents nickel, Co represents cobalt, Ce represents cerium, Cr represents chromium, X represents at least one element selected from the group consisting of potassium, rubidium, and cesium, SiOrepresents silica, a, b, c, d, e, f, g, and h each represent an atomic ratio of each element and satisfy 0.1≤a≤1, 1≤b≤3, 1≤c≤6.5, 1≤d≤6.5, 0.2≤e≤1.2, f≤0.05, and 0.05≤g≤1, provided that h is an atomic ratio of an oxygen atom, the atomic ratio satisfying valences of constituent elements excluding silica, A represents a content of silica (% by mass) in the composite and satisfies 35≤A≤48, and values of α, β, and γ calculated from the atomic ratios of respective elements by the following expressions (2), (3), and (4) satisfy 0.03≤α≤0.08, 0.2≤β≤0.4, and 0.5≤γ≤22. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein the X represents rubidium.3. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein δ calculated from the atomic ratio of each element by the following expression (5) satisfies 1.1≤δ≤3.0:{'br': None, 'i': 'e/a', 'δ=\u2003\u2003(5).'}4. A method for producing the catalyst for the fluidized bed ammoxidation reaction according ...

CATALYST COMPOSITIONS AND PROCESS FOR DIRECT PRODUCTION OF HYDROGEN CYANIDE IN AN ACRYLONITRILE REACTOR FEED STREAM

The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NHpresent in effluent gas streams to Nand/or NO. 1. A catalyst composition comprising a mixed oxide catalyst of formula (I) or (II):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'h, 'sup': 1', '2', '3', '4', '5', '6, 'MoXXXXXXO\u2003\u2003(I)'}{'br': None, 'sub': i', 'j', 'k', 'm', 'n', 'q', 'x', 'y', 'r, 'FeMoCrBiMNQXYO\u2003\u2003(II)'} [{'sup': '1', 'Xis Cr and/or W;'}, {'sup': '2', 'Xis Bi, Sb, As, P, and/or a rare earth metal;'}, {'sup': '3', 'Xis Fe, Ru, and/or Os;'}, {'sup': '4', 'Xis Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, and/or Pb;'}, {'sup': '5', 'Xis Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;'}, {'sup': '6', 'Xis an alkaline earth metal and/or an alkali metal;'}, '0≤a≤5;', '0.03≤b≤25;', '0≤c≤20;', '0≤d≤200;', '0≤e≤8;', '0≤f≤3; and', 'h is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (I), where', '1≤c+d+e+f≤200;', '0≤e+f≤8; and, 'wherein in the formula (I) M is Ce and/or Sb;', 'N is La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, P, and/or As;', 'Q is W, Ru, and/or Os;', 'X is Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;', 'Y is an alkaline earth metal and/or an alkali metal;', '0.2≤i≤100;', '0≤j≤2;', '0≤k≤2;', '0.05≤m≤10;', '0≤n≤200;', '0≤q≤8;', '0≤x≤30;', '0≤y≤8;', 'j and kj; and', 'r is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (II),, 'wherein in the formula (II) 4≤m+n+q+x+y≤200;', '0≤q+x+y≤30; and, 'wherein{'sup ...

Calcination apparatus, process for producing oxide catalyst, and process for producing unsaturated acid or unsaturated nitrile

Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.

Composite Material Containing A Bismuth-Molybdenum-Nickel Mixed Oxide Or A Bismuth-Molybdenum-Cobalt Mixed Oxide And SIO2

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins.

CONJUGATED-DIOLEFIN-PRODUCING CATALYST, AND PRODUCTION METHOD THEREFOR

Provided are a catalyst which, in a reaction. for producing a conjugated diolefin by catalytic oxidative dehydrogenation from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen, may suppress the production of a coke-like substance and improve the long-term stability of the reaction; and a method for producing the same. Disclosed is a composite metal oxide catalyst for producing a conjugated diolefin by a gas phase catalytic oxidative dehydrogenation reaction from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen, the composite metal oxide catalyst having a solid acidity of 35 to 172 μmol/g. 1. A composite metal oxide catalyst for producing a conjugated diolefin by a gas phase catalytic oxidative dehydrogenation reaction from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen , the composite metal oxide catalyst having a solid acidity of 35 to 172 μmol/g.2. The composite metal oxide catalyst according to claim 1 , comprising molybdenum (Mo) claim 1 , bismuth (Bi) claim 1 , an alkali metal (AM) claim 1 , and if necessary claim 1 , an alkaline earth metal (AEM) claim 1 ,{'b': '30', 'wherein a molar ratio of the alkali metal and the alkaline earth metal with respect to bismuth, Bi/(AM AEM), is from 0.6 to 11.0.'}3. The composite metal oxide catalyst according to claim 1 , wherein the composite metal oxide catalyst satisfies the following composition formula:{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h, 'MOBiFeCoNiXYZO'}wherein Mo represents molybdenum; Bi represents bismuth; Fe represents iron; Co represents cobalt; Ni represents nickel; X represents at least one alkali metal element selected from lithium, sodium, potassium, rubidium, and cesium; Y represents at least one alkaline earth metal element selected from magnesium, calcium, strontium and barium; Z represents at least one element selected from lanthanum, cerium, praseodymium, neodymium, ...

Composite Material Containing A Bismuth-Molybdenum-Nickel Mixed Oxide Or A Bismuth-Molybdenum-Cobalt Mixed Oxide And SIO2

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins. 1. A process for producing a composite material , comprising the steps of:(a) preparing a first aqueous solution containing salts of bismuth and of nickel or of bismuth and of cobalt;(b) preparing a second aqueous solution containing a molybdenum compound and optionally a binder;(c) adding the first aqueous solution to the second aqueous solution, forming a first suspension;{'sub': '2', '(d) adding a second suspension to the first suspension to form a third suspension, the second suspension containing SiOwhich has a pore volume in the range from 0.1 to 10 ml/g and an average particle size in the range from 3 to 20 μm; and'}(e) spray-calcining the third suspension at a temperature in the range from 200 to 600° C., to give the composite material containing a bismuth-molybdenum-nickel mixed oxide or bismuth-molybdenum-cobalt mixed oxide.2. The process as claimed in claim 1 , wherein in step (a) the first aqueous solution further comprises a salt of magnesium claim 1 , a salt of iron or a combination thereof.3. The process as claimed in claim 1 , wherein in step (a) the first aqueous solution contains a potassium compound.4. The process as claimed in claim 1 , ...

Catalyst For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid, Method For Producing Same, And Method For Producing Unsaturated Aldehyde and/or Unsaturated Carboxylic Acid

Provided is a catalyst having high activity and yield of a target product for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid and further having high mechanical strength. The catalyst is a catalyst prepared by a method in which a catalyst formulation satisfies specified atomic ratios; and in the preparation thereof, a molybdenum component raw material is an ammonium molybdate, a solvent for dissolving the ammonium molybdate is water, a bismuth component raw material is bismuth nitrate, and a solvent for dissolving bismuth nitrate is a nitric acid aqueous solution, and the weight of water for dissolving the ammonium molybdate, the weight of the nitric acid aqueous solution for dissolving the bismuth nitrate, and the acid concentration of the nitric acid aqueous solution are satisfied with specified ranges, respectively. 1. A catalyst for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid , comprising:a compound represented by the following formula (1), {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h, 'MoBiFeCoNiXYZO\u2003\u2003Formula (1)'}, 'the catalyst being prepared by a method in which in a step of preparing the compound represented by the following formula (1), a molybdenum component raw material is composed of only ammonium molybdate, a weight of water for dissolving the ammonium molybdate is 8.5 times or less relative to a weight of molybdenum contained in the ammonium molybdate, and a bismuth component raw material is composed of only bismuth nitrate, a weight of a nitric acid aqueous solution for dissolving the bismuth nitrate is 2.3 times or more relative to a weight of bismuth contained in the bismuth nitrate, and a nitric acid concentration of the nitric acid aqueous solution for dissolving the bismuth nitrate is 10% by weight or morewherein X is at least one element selected from the group consisting of magnesium (Mg), calcium (Ca), manganese (Mn), copper (Cu), zinc (Zn), cerium (Ce) and ...

DIENE PRODUCTION METHOD

A method for producing diene in which diene can be produced in a high yield by using a raw material including a branched olefin and a straight chain olefin is provided. The method for producing diene comprises: a step 1 of obtaining an internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin; a step 2 of isomerizing the internal olefin to a terminal olefin by using an isomerization catalyst; and a step 3 of producing diene from the terminal olefin obtained in the step 2 by oxidative dehydrogenation using a dehydrogenation catalyst. 1. A method for producing diene , comprising:a step 1 of obtaining an internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin;a step 2 of isomerizing the internal olefin to a terminal olefin by using an isomerization catalyst; anda step 3 of producing diene from the terminal olefin obtained in the step 2 by oxidative dehydrogenation using a dehydrogenation catalyst.2. The method for producing diene according to claim 1 ,wherein at least a part of the straight chain olefin is a terminal olefin, andwherein in the step 1, the branched olefin is removed from the raw material and the terminal olefin is isomerized to the internal olefin by reactive distillation.3. The method for producing diene according to claim 1 ,wherein the isomerization catalyst includes at least one selected from the group consisting of silica and alumina.4. The method for producing diene according to claim 1 ,wherein the dehydrogenation catalyst has a complex oxide including bismuth, molybdenum and oxygen.5. The method for producing diene according to claim 1 ,wherein in the step 2, the internal olefin is isomerized to the terminal olefin to obtain a first fraction including the terminal olefin and a second fraction including an unreacted portion of the internal olefin by reactive distillation.6. The method for producing ...

SYNTHESIS OF A MOVNBTE CATALYST HAVING A REDUCED NIOBIUM AND TELLURIUM CONTENT AND HIGHER ACTIVITY FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE

A novel mixed oxide material is disclosed which contains molybdenum, vanadium, tellurium and niobium and the use of the molybdenum mixed oxide material as catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid and a process for producing the mixed oxide material. 1. A mixed oxide material comprising the elements molybdenum , vanadium , niobium and tellurium which in the XRD using Cu—Kα radiation has diffraction reflections h , i , k and I whose peaks are approximately at the diffraction angles (2θ) 26.2°±0.5° (h) , 27.0°±0.5° (i) , 7.8°±0.5° (k) and 28.0°±0.5° (I) , said mixed oxide material having the following stoichiometry:{'br': None, 'sub': 1', 'a', 'b', 'c', 'n, 'MoVNbTeO\u2003\u2003(I)'}a=0.2 to 0.35,b=greater than 0 to 0.08,c=greater than 0 to 0.08,n=an integer determined by the valence and abundance of the elements other than oxygen in (I).2. The mixed oxide material as claimed in claim 1 , wherein said mixed oxide material has a BET surface area which is greater than 15 m/g.3. A process for producing a mixed oxide material as claimed in claim 1 , comprising the steps:a) production of a mixture of starting compounds containing molybdenum, vanadium, niobium and a tellurium-containing starting compound in which tellurium is present in the oxidation state +4, and also oxalic acid and at least one further oxo ligand,b) hydrothermal treatment of the mixture of starting compounds at a temperature of from 100° C. to 300° C. to give a product suspension,c) isolation and drying of the mixed oxide material present in the suspension resulting from step b).4. The process as claimed in claim 3 , wherein the tellurium-containing starting compound is tellurium dioxide or a compound of the formula MTeOwhere n=1 or 2 and x=2/n claim 3 , where M is an alkali metal or alkaline earth metal.5. The process as claimed in claim 3 , wherein the mixture of starting compounds is present as aqueous suspension.6. The process as ...

CATALYST FOR AMMOXIDATION, METHOD FOR PRODUCING THE SAME AND METHOD FOR PRODUCING ACRYLONITRILE

The catalyst for ammoxidation of the present invention contains a catalyst particle containing molybdenum, bismuth and iron, and has a ratio of hollow particles of 23% or less. Furthermore, a method for producing the catalyst for ammoxidation includes a step of preparing a catalyst precursor slurry containing molybdenum, bismuth and iron and having a solid concentration of 30% by mass or less, a step of spray-drying the catalyst precursor slurry at a drier inlet temperature of 120° C. to 240° C. to thereby obtain a dried particle and a step of calcining the dried particle at 500 to 750° C. 1. A catalyst for ammoxidation , comprising a catalyst particle comprising molybdenum , bismuth and iron , wherein the catalyst has a ratio of hollow particles of 23% or less.2. The catalyst for ammoxidation according to claim 1 , wherein the catalyst particle comprises a composite metal oxide having a composition represented by the following formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, and barium; Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, gallium, and indium; Z represents at least one element selected from the group consisting of potassium, rubidium, and cesium; and a, b, c, d, e, and f represent an atomic ratio of each element and satisfy 0.1≤a≤2.0, 0.1≤b≤3.0, 0.1≤c≤10.0, 0.1≤d≤3.0, and 0.01≤e≤2.0, respectively, wherein f represents a number of oxygen atoms needed to satisfy atomic valence requirements of the other existing elements.3. A method for producing the catalyst for ammoxidation according to claim 1 , the method comprising:a step of preparing a catalyst precursor slurry which comprises molybdenum, bismuth and iron and which has a solid concentration of 30% by mass or less,a step ...

CATALYST FOR CONJUGATED DIOLEFIN PRODUCTION AND METHOD FOR PRODUCING SAME

Provided are a catalyst that may suppress the production of a coke-like substance in a reaction for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction, the composite metal oxide catalyst having a relative intensity range of X-ray diffraction peaks represented by the following Formula (A): 0≦Rh(=Ph1/Ph2)<0.8 (A) wherein Ph1 represents the maximum peak height within the range of 2θ=28.1°±0.2° for the X-ray diffraction peaks; Ph2 represents the maximum peak height within the range of 2θ=27.9°±0.2° for the X-ray diffraction peaks; and Rh represents the relative intensity ratio of Ph1 with respect to Ph2. 1. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction , the composite metal oxide catalyst having a relative intensity range of X-ray diffraction peaks represented by the following Formula (A):{'br': None, 'i': ≦Rh', 'Ph', '/Ph, '0(=12)<0.8\u2003\u2003(A)'}wherein Ph1 represents the maximum peak height within the range of 2θ=28.1°±0.2° for the X-ray diffraction peaks; Ph2 represents the maximum peak height within the range of 2θ=27.9°±0.2° for the X-ray diffraction peaks; and Rh represents the relative intensity ratio of Ph1 with respect to Ph2.2. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction , the composite metal oxide catalyst having a relative area intensity range of X-ray diffraction peaks represented by the following Formula (B):{'br': None, 'i': ≦Ra', 'Pa', '/Pa, '0(=12 ...

CATALYST FOR PREPARATION OF AN UNSATURATED CARBOXYLIC ACID BY GAS PHASE OXIDATION OF AN UNSATURATED ALDEHYDE

What is described is a catalyst for preparation of an α,β-unsaturated carboxylic acid by gas phase oxidation of an α,β-unsaturated aldehyde, comprising a shaped support body with an active composition applied thereto, wherein the active composition coverage q 3. The catalyst according to claim 1 , wherein the shaped support body is a hollow cylindrical shaped support body.4. The catalyst according to claim 1 , wherein the shaped support body comprises steatite and is essentially nonporous.5. The catalyst according to claim 3 , wherein the hollow cylindrical shaped support body has a height of from 2 to 5 mm and an external diameter of from 4 to 8 mm claim 3 , and the median difference between the external diameter and internal diameter is from 1 to 2 mm.6. The catalyst according to claim 1 , wherein the active composition comprises a multielement oxide of formula (II){'br': None, 'sub': 12', 'a', 'b', 'c', 'e', 'f', 'n, 'sup': 4', '5, 'MoVWCuXXO\u2003\u2003(II),'}in which{'sup': '4', 'Xis one or more alkali metals and/or alkaline earth metals,'}{'sup': '5', 'Xis one or more elements from the group consisting of Si, Al, Ti and Zr,'}a is a number in the range from 2 to 4,b is a number in the range from 0 to 3,c is a number in the range from 0.8 to 3,e is a number in the range from 0 to 4,f is a number in the range from 0 to 40, andn is the stoichiometric coefficient of the element oxygen, which is determined by the stoichiometric coefficients of the elements other than oxygen and the valency thereof in (II).7. A method for preparing the catalyst according to claim 1 , said method comprisingcoating the shaped support body with the active composition,wherein the coating comprises mixing a multitude of shaped support bodies, a pulverulent active composition and a liquid binder, without saturating the pulverulent active composition with the liquid binder, in a vessel, wherein the duration of the coating operation is less than 30 minutes.8. The method according to claim 7 ...

Catalyst and Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene

The invention relates to a catalyst which comprises a catalytically active multimetal oxide which comprises molybdenum and at least one further metal has the general formula (I) 1. A catalyst which comprises a catalytically active multimetal oxide which comprises molybdenum and at least one further metal has the general formula (I){'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'x, 'sup': 1', '2, 'MoBiMnCoFeXXO\u2003\u2003(I),'}where the variables have the following meanings:{'sup': '1', 'X=Si and/or Al;'}{'sup': '2', 'X=Li, Na, K, Cs and/or Rb;'}a=0.2 to 1;b=0 to 2;c=2 to 10;d=0.5 to 10;e=0 to 10;f=0 to 0.5; andx=is a number determined by the valence and abundance of the elements other than oxygen in (I).2. The catalyst according to claim 1 , wherein Xin formula (I) is silicon.3. The catalyst according to claim 1 , wherein Xin formula (I) is potassium.4. The catalyst according to claim 1 , wherein claim 1 , in formula (I) claim 1 ,a=0.5 to 4;b=0.1 to 0.8;c=5 to 9;d=2 to 6;e=1 to 1.0; andf=0.01 to 0.3.5. The catalyst according claim 1 , which is an all-active catalyst.6. The catalyst according claim 1 , which is a coated catalyst comprising a support body (a) and a shell (b).7. The catalyst according to claim 6 , wherein the support body is a hollow cylinder having a length of from 2 to 6 mm claim 6 , an external diameter of from 4 to 8 mm and a wall thickness of from 1 to 2 mm.8. The catalyst according to claim 6 , wherein the support body is composed of steatite.9. The catalyst according to claim 6 , wherein the shell (b) has a layer thickness D of from 50 to 600 μm.10. A process for the oxidative dehydrogenation of n-butenes to butadiene claim 1 , wherein a starting gas mixture comprising n-butenes is mixed with an oxygen-comprising gas and brought into contact with a coated catalyst according of arranged in a fixed catalyst bed at a temperature of from 220 to 490° C. in a fixed-bed reactor.11. The process according to claim 10 , wherein the fixed-bed ...

METHOD FOR PRODUCING OXIDE CATALYST, AND METHOD FOR PRODUCING UNSATURATED NITRILE

The present invention provides a method for producing an oxide catalyst comprising Mo, V, Sb, and Nb for use in a gas-phase catalytic oxidation reaction or a gas-phase catalytic ammoxidation reaction of propane or isobutane, the method comprising: a preparation step of preparing a first aqueous mixed solution containing Mo, V, and Sb; a mixing step of mixing the first aqueous mixed solution with a support raw material comprising silica sol, and a Nb raw material to obtain a second aqueous mixed solution; a drying step of drying the second aqueous mixed solution to obtain a dry powder; and a calcination step of calcining the dry powder to obtain the oxide catalyst, wherein the support raw material comprises 25% by mass or more, based on SiO, of the silica sol having an average primary particle size of 3.0 nm or larger and smaller than 11 nm based on a total amount of the support raw material, and the silica sol comprises 55% or more of silica sol particles having a primary particle size of smaller than 11 nm. 1. A method for producing an oxide catalyst comprising Mo , V , Sb , and Nb for use in a gas-phase catalytic oxidation reaction or a gas-phase catalytic ammoxidation reaction of propane or isobutane , the method comprising:a preparation step of preparing a first aqueous mixed solution containing Mo, V, and Sb;a mixing step of mixing the first aqueous mixed solution with a support raw material comprising silica sol, and a Nb raw material to obtain a second aqueous mixed solution;a drying step of drying the second aqueous mixed solution to obtain a dry powder; anda calcination step of calcining the dry powder to obtain the oxide catalyst, wherein{'sub': '2', 'the support raw material comprises 25% by mass or more, based on SiO, of the silica sol having an average primary particle size of 3.0 nm or larger and smaller than 11 nm based on a total amount of the support raw material, and the silica sol comprises 55% or more of silica sol particles having a primary ...

OXIDE CATALYST

An oxide catalyst for use in an oxidation reaction of an olefin and/or an alcohol, the oxide catalyst comprising: the oxide catalyst contains molybdenum, bismuth, iron, cobalt, and cerium; an atomic ratio a of bismuth to 12 atoms of molybdenum is 2≦a≦6, an atomic ratio b of iron to 12 atoms of molybdenum is 2.5 Подробнее

METHOD FOR PRODUCING AMMOXIDATION CATALYST, AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing an ammoxidation catalyst, comprising: 1. A method for producing an ammoxidation catalyst , comprising:a step of preparing a precursor slurry that is a precursor of the catalyst;a drying step of obtaining a dry particle from the precursor slurry; anda calcination step of calcining the dry particle, whereinthe step of preparing the precursor slurry is a step of mixing a first solution or slurry having a first pH and a second solution or slurry to obtain a solution or slurry having a second pH after completion of mixing,a time during which a pH of a mixture passes through a particular range having an upper limit and a lower limit while the second solution or slurry is mixed is 1-70 seconds, the upper limit and the lower limit being designated as a third pH and a fourth pH respectively, andthe third pH and the fourth pH are set between the first pH and the second pH.2. The method for producing the ammoxidation catalyst according to claim 1 , whereinthe step of preparing the precursor slurry is a step of mixing a second solution or slurry comprising at least bismuth and iron with a first solution or slurry comprising at least molybdenum to obtain a precursor slurry,a pH of the first solution or slurry before the second solution or slurry is mixed is within a range of 5.5-7.0,a pH of the first solution or slurry after mixing of the second solution or slurry is completed is within a range of 0.1-1.9, anda time during which a pH of a mixture passes through a range of 4.0-2.0 while the second solution or slurry is mixed is 1-70 seconds.3. The method for producing the ammoxidation catalyst according to claim 1 , whereinthe step of preparing the precursor slurry is a step of mixing a second solution or slurry comprising at least molybdenum with a first solution or slurry comprising at least bismuth and iron to obtain a precursor slurry,a pH of the first solution or slurry before the second solution or slurry is mixed is within a range of 0.1-0.5,a pH of ...

SILICA-SUPPORTED CATALYST

A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane, the catalyst including a metal oxide represented by the following formula (1), 1. A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane , the catalyst comprising a metal oxide represented by the following formula (I) ,{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'n, 'MoVNbXTZO\u2003\u2003(1)'}(wherein X represents at least one or more elements selected from Sb and Te; T represents at least one or more elements selected from Ti, W, Mn, and Bi; Z represents at least one or more elements selected from La, Ce, Yb, and Y; and a, b, c, d, and e are in a range of 0.05≦a≦0.5, 0.01≦b≦0.5, 0.001≦c≦0.5, 0≦d≦1, and 0≦e≦1, respectively, and n represents a value that satisfies an atomic valence){'sup': 3', '2, 'wherein the silica-supported catalyst has an average pore size of 60 to 120 nm, a total pore volume of 0.15 cm/g or more, a specific surface area of 5 to 25 m/g, and a crystallite size of 40 to 250 nm as determined from half width of a (001) peak by X-ray diffraction.'}2. The silica-supported catalyst according to claim 1 , wherein a pore volume of pores having a pore size of less than 60 nm based on total pore volume is less than 30% claim 1 , and a pore volume of pores having a pore size exceeding 120 nm based on total pore volume is less than 30%.3. The silica-supported catalyst according to or claim 1 , wherein a support amount of the silica is 20 to 70% by mass based on total mass of the catalyst composed of the metal oxide and the silica.4. A method for producing a silica-supported catalyst claim 1 , comprising the steps of:(I) preparing a raw material-prepared solution containing Mo, V, Nb, X, T, and Z, wherein an atomic ratio a of V to one Mo atom is 0.05≦a≦0.5, an atomic ratio b of Nb to one Mo atom is 0.01≦b ...

HIGHLY-DISPERSED HYDROGENATION CATALYST, PREPARATION METHOD THEREOF, AND USE THEREOF IN PREPARATION OF BIOFUEL FROM PALM OIL OR OTHER OIL

A highly-dispersed hydrogenation catalyst, a preparation method thereof, and use thereof in the preparation of biofuel from palm oil or other oil are provided. The combination of maleic anhydride-grafted polypropylene (MA-PP) and a silane coupling agent (SCA) is introduced into an aluminum oxide composite carrier through organic amidation to obtain a uniformly-dispersed composite carrier with regular pores. Moreover, through a multi-stage impregnation and roasting process, a particle size of an active component is greatly reduced, and the dispersion of the active component and the number of active sites are improved. A hydrogenation catalyst with high hydrothermal stability, high hydrogenation activity, and long life is prepared based on the composite carrier with regular pores and used in the preparation of biofuel from vegetable oil or other oil through hydrodeoxygenation (HDO), which has great industrial application value. 1. An aluminum oxide composite carrier , wherein maleic anhydride-grafted polypropylene (MA-PP) and a silane coupling agent (SCA) undergo amidation to obtain a reaction product , then γ-AlOand tetrabutyl titanate (TBT) are added into the reaction product to obtain a solid material , and the solid material is dried and roasted to form the aluminum oxide composite carrier , wherein the aluminum oxide composite carrier is an aluminum oxide-titanium dioxide carrier.2. An aluminum oxide composite carrier , wherein MA-PP and an SCA undergo amidation to obtain a reaction product , then γ-AlOand tetrabutyl zirconate (TBZ) are added into the reaction product to obtain a solid material , and the solid material is dried and roasted to form the aluminum oxide composite carrier , wherein the aluminum oxide composite carrier is an aluminum oxide-zirconium dioxide carrier.3. The aluminum oxide composite carrier according to claim 1 , wherein a mass percentage of the titanium dioxide in the aluminum oxide composite carrier is 5% to 20%.4. The aluminum oxide ...

Metal oxide catalyst, method for producing same, and apparatus for producing same

A metal oxide catalyst, which has a bulk composition represented by formula (1) below and which is used to produce a conjugated diolefin by an oxidative dehydrogenation reaction between a monoolefin, having 4 or more carbon atoms, and molecular oxygen, wherein standard deviation obtained by dividing a ratio of Bi molar concentration relative to Mo molar concentration at the surface of a catalyst particle by a ratio of the Bi molar concentration relative to the Mo molar concentration in a catalyst bulk is 0.3 or less. Mo 12 Bi p Fe q A a B b C c D d E e F f O x   (1) (In the formula, A is at least one type of element selected from the group consisting of Ni and Co, B is at least one type of element selected from among alkali metal elements, C is at least one type of element selected from the group consisting of Mg, Ca, Sr, Ba, Zn and Mn, D is at least one type of rare earth element, E is at least one type of element selected from the group consisting of Cr, In and Ga, F is at least one type of element selected from the group consisting of Si, Al, Ti and Zr, O is oxygen, p, q, a, b, c, d, e, f and x denote the number of atoms of Bi, Fe, A, B, C, D, E, F and oxygen, respectively, relative to 12 Mo atoms, and are such that 0.1≤p≤5, 0.5≤q≤8, 0≤a≤10, 0.02≤b≤2, 0≤c≤5, 0≤d≤5, 0≤e≤5 and 0≤f≤200, and x is the number of oxygen atoms required to satisfy valency requirement of other elements present.)

Mechanically stable hollow cylindrical shaped catalyst bodies for gas phase oxidation of an alkene to an unsaturated aldehyde and/or an unsaturated carboxylic acid

A hollow cylindrical shaped catalyst body for gas phase oxidation of an alkene to an α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid comprises a compacted multimetal oxide having an external diameter ED, an internal diameter ID and a height H, wherein ED is in the range from 3.5 to 4.5 mm; the ratio q=ID/ED is in the range from 0.4 to 0.55; and the ratio p=H/ED is in the range from 0.5 to 1. The shaped catalyst body is mechanically stable and catalyzes the partial oxidation of an alkene to the products of value with high selectivity. It provides a sufficiently high catalyst mass density of the catalyst bed and good long-term stability with acceptable pressure drop.

METHOD FOR PRODUCING AMMOXIDATION CATALYST AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing an ammoxidation catalyst, the method including: a step (i) of preparing a starting material slurry comprising molybdenum, bismuth, iron, and a carboxylic acid compound; a step (ii) of stirring the starting material slurry in a temperature range of 30 to 50° C. for 20 minutes to 8 hours, thereby preparing a precursor slurry; a step of spray-drying the precursor slurry, thereby obtaining a dried particle; and a step of calcining the dried particle. 1. A method for producing an ammoxidation catalyst , the method comprising:a step (i) of preparing a starting material slurry comprising molybdenum, bismuth, iron, and a carboxylic acid compound;a step (ii) of stirring the starting material slurry in a temperature range of 30 to 50° C. for 20 minutes to 8 hours, thereby preparing a precursor slurry;a step of spray-drying the precursor slurry, thereby obtaining a dried particle; anda step of calcining the dried particle.2. The method for producing the ammoxidation catalyst according to claim 1 , wherein the precursor slurry has a viscosity of 1 to 100 cp.3. The method for producing the ammoxidation catalyst according to claim 1 , wherein the ammoxidation catalyst has a composition represented by the following formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, and barium; Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, gallium, and indium; Z represents at least one element selected from the group consisting of potassium, rubidium, and cesium; provided that a proportion of cobalt is 20 atomic % or more and/or a proportion of magnesium is 20 atomic % or less in the element X; a, b, c, d, and e satisfy 0.1≤a≤2.0, 0.1≤b≤3.0, 0.1≤c≤10.0, 0.1≤d≤3.0 and 0.01≤e≤2.0, respectively; and ...

MIXED METAL OXIDE AMMOXIDATION CATALYSTS

A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition. 1. A catalytic composition comprising a complex of metal oxides wherein the relative ratios of the listed elements in said catalyst are represented by the following formula:{'br': None, 'sub': m', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'n', 'x, 'MoBiFeADEFGCeRbO'} D is at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, cadmium and barium;', 'E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminum, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium;', 'F is at least one element selected from the group consisting of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium thulium, ytterbium, lutetium, scandium, yttrium, titanium, zirconium, hafnium, niobium, tantalum, aluminum, gallium, indium, thallium, silicon lead and germanium;', 'G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and, 'wherein A is at least one element selected from the group consisting of lithium, sodium, potassium, and cesium; and'} a is greater than 0, but less than or equal to 7,', 'b is 0.1 to 7,', 'c is greater than 0, but less than or equal to 5,', 'd is 0.1 to 12,', 'e is 0 to 5,', 'f is 0 to 5,', 'g is 0 to 0.2,', 'h is 0.01 to 5,', 'm is 10 to 15,', 'n is greater than 0, but less than or equal to 5,', 'x is the number of oxygen atoms required to satisfy the valence requirements of the other component elements present; and, 'a, b, c, d, e, f, g, ...

PROCESS FOR PRODUCING A CATALYTICALLY ACTIVE COMPOSITION BEING A MIXTURE OF A MULTIELEMENT OXIDE COMPRISING THE ELEMENTS MO AND V AND AT LEAST ONE OXIDE OF MOLYBDENUM

A process for producing a catalytically active composition being a mixture of a multielement oxide comprising the elements Mo and V and at least one oxide of molybdenum, in which spray drying of an aqueous solution or of an aqueous suspension of starting compounds comprising the elements of the multielement oxide produces a spray powder P, a pulverulent oxide of molybdenum and optionally shaping assistants are added thereto, shaped bodies are shaped from the resulting mixture and these are converted to the catalytically active composition by thermal treatment. 1. A process for producing a catalytically active composition , the process comprising:using sources of elemental constituents of a multielement oxide comprising Mo and V to obtain an aqueous solution, or to obtain an aqueous suspension with the proviso that each of the sources passes through an aqueous solution,spray drying the aqueous solution or aqueous suspension to obtain a spray powder P,adding at least one pulverulent oxide S of molybdenum and optionally one or more shaping assistants into the spray powder P, thereby obtaining a mixture,homogeneously mixing and shaping the mixture, thereby obtaining geometric shaped precursor bodies, andthermally treating the geometric shaped precursor bodies, thereby obtaining the catalytically active composition comprising the at least one pulverulent oxide S of molybdenum and the multielement oxide.2. The process according to claim 1 , wherein the at least one pulverulent oxide S of molybdenum is molybdenum dioxide claim 1 , molybdenum trioxide or a mixture of molybdenum dioxide and molybdenum trioxide.3. The process according to claim 1 , wherein the at least one pulverulent oxide S of molybdenum has a specific surface area Oof ≦20 m/g.4. The process according to claim 1 , wherein the at least one pulverulent oxide S of molybdenum has a specific surface area Oof ≧0.01 m/g.5. The process according to claim 1 , wherein the at least one pulverulent oxide S of ...

Catalyst, acrylic acid production method, and catalyst production method

An object of the present invention is to provide a catalyst ensuring that in the case of causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas with use of the catalyst to produce a corresponding unsaturated carboxylic acid, the pressure loss can be kept low and an unsaturated carboxylic acid can be produced with high selectivity. The present invention relates to a ring-shaped or columnar catalyst, which is used at the time of producing a corresponding unsaturated carboxylic acid by causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas, wherein the outer peripheral edge part is inclined relative to the center line.

CATALYST FOR OXIDATIVE DEHYDROGENATION OF BUTENE AND METHOD FOR PRODUCING THE SAME

The present invention relates to a catalyst for oxidative dehydrogenation of butene and a method for producing the same. The catalyst for oxidative dehydrogenation of butene has a large amount of Mo—Bi phase acting as a reaction active phase on the surface, and therefore, can exhibit high catalytic activity, high conversion rate and high butadiene selectivity in the oxidative dehydrogenation of butene. 1. A catalyst for oxidative dehydrogenation of butene , which is represented by the following Composition Formula 1 , {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'MoBiCo(M1)(M4)O\u2003\u2003[Composition Formula 1]'}, 'wherein a surface composition of the catalyst measured by X-ray photoelectron spectroscopy, a molar content of bismuth (Bi) is higher than a molar content of cobalt (Co),'}in Composition Formula 1, Mo is molybdenum, Bi is bismuth, Co is cobalt, O is oxygen,M1 is one or more Group 1 metal elements,M4 is one or more period 4 transition metal elements excluding cobalt (Co),a is from 9 to 25, b is from 0.5 to 2, c is from 1 to 10, d is from 0.01 to 1, e is from 0.5 to 5, andf is from 30 to 50.2. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the period 4 transition metal comprises at least one selected from the group consisting of titanium claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , iron claim 1 , nickel claim 1 , copper claim 1 , and zinc.3. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the Group 1 metal comprises at least one selected from the group consisting of sodium claim 1 , potassium claim 1 , rubidium claim 1 , and cesium.4. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the catalyst satisfies the following Calculation Formula 1{'br': None, 'BARS/BART>6, \u2003\u2003[Calculation Formula 1]'}in Calculation Formula 1BARS is the molar content of bismuth/the molar content of cobalt on the catalyst surface, measured ...

METHOD FOR PRODUCING CATALYST AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing a catalyst according to the present invention includes: a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid; a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; and a calcination step of calcining the dried particle, wherein the preparation step comprises: a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; and a step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron. 1. A method for producing a catalyst , comprising:a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid;a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; anda calcination step of calcining the dried particle, whereinthe preparation step comprises:a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; anda step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron.3. The method for producing the catalyst according to claim 2 , wherein in the catalyst claim 2 , a standard deviation of values obtained by dividing a ratio of a molar concentration of Bi to a molar concentration of Mo on a surface of catalyst particles by a ratio of a molar concentration of Bi to a molar concentration of Mo in a metal oxide bulk is 0.2 or less.4. The method for producing the catalyst according to claim 1 , whereinthe step (II) comprises the following (i) step and (ii) step, andthe drying step comprises the following (iii) step;(i) a step of preparing a Mo-containing liquid comprising at least Mo and a Bi-containing liquid comprising at least Bi,(ii) a step of continuously supplying the Mo-containing liquid to a first flow channel, continuously supplying the Bi- ...

PROCESS FOR PRODUCING COMPOUND

A process for producing a compound by use of a fluidized bed reactor comprising an internal space having a catalyst housed in a fluidizable manner therein, a first feed port into which a starting material gas comprising a hydrocarbon is fed to the fluidized bed reactor, a second feed port into which an oxygen-containing gas comprising oxygen is fed to the fluidized bed reactor, and a discharge port into which a reaction product gas is discharged from the fluidized bed reactor, including a reaction step of subjecting the hydrocarbon to a vapor phase catalytic oxidation reaction or a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated acid or unsaturated nitrile, respectively, wherein in the reaction step, a linear velocity (m/sec) of the starting material gas at the first feed port is adjusted against a degree of abrasion resistance (%) of the catalyst so as to satisfy a prescribed relation between them. 1. A process for producing a compound by use of a fluidized bed reactor comprising an internal space having a catalyst housed in a fluidizable manner therein , a first feed port into which a starting material gas comprising a hydrocarbon is fed to the fluidized bed reactor , a second feed port into which an oxygen-containing gas comprising oxygen is fed to the fluidized bed reactor , and a discharge port into which a reaction product gas is discharged from the fluidized bed reactor ,comprising a reaction step of subjecting the hydrocarbon to a vapor phase catalytic oxidation reaction or a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated acid or unsaturated nitrile, respectively, whereinin the reaction step, a linear velocity (m/sec) of the starting material gas at the first feed port is adjusted against a degree of abrasion resistance (%) of the catalyst so as to satisfy the condition ...

Molybdenum Based Complex Oxide Catalyst, Its Preparation Method and Use

Disclosed are a molybdenum based composite oxide catalyst, its preparation method and use. The catalyst has the following general formula: BiMoMNO; wherein M is one of V, Cr, Mn, Fe, Co, Ni and Cu, or a mixture of two or more of V, Cr, Mn, Fe, Co, Ni and Cu in any ratio; N is one of Na, K, Cs, Ca and Ba, or a mixture of two or more of Na, K, Cs, Ca and Ba in any ratio; x=0.5˜20; y=0.05˜20; z=0.0˜15; a is a number satisfying the valance of each atom. The catalyst is prepared by the following method: firstly mixing a certain amount of the lead metal oxides according to the chemical proportion and then grinding the mixture with high-energy ball milling for a period of time to obtain the molybdenum based composite oxide catalyst. The catalyst exhibits excellent performance when using for preparation of butadiene by oxidative dehydrogenation of butene, and the preparation process is simple, controllable, and repeatable. Waste water or waste gas that is difficult to be treated is not produced during preparation. 1. A molybdenum based composite oxide catalyst having the following formula:{'br': None, 'sub': x', 'y', 'z', 'a, 'BiMoMNO'}wherein M is one of V, Cr, Mn, Fe, Co, Ni and Cu, or a mixture of two or more thereof in any ratio;N is one of Na, K, Cs, Ca and Ba, or a mixture of two or more thereof in any ratio;x=0.5˜20;y=0.05˜20;z=0.01˜5;a is a number satisfying the valance of each atom;wherein the catalyst is prepared by the method comprising the steps of:(1) weighing bismuth molybdate and oxide precursors of other metal elements according to the proportions of ingredients in the above formula, grinding and sieving to obtain a mixture;(2) transferring the mixture to a ball mill jar, ball milling same to produce the desired molybdenum based composite oxide catalyst.2. The molybdenum based composite oxide catalyst according to claim 1 , wherein M is one or two of V claim 1 , Fe claim 1 , Co and Ni; and N is K or Cs.3. The molybdenum based composite oxide catalyst ...

OXIDE CATALYST AND METHOD FOR PRODUCING UNSATURATED NITRILE

An oxide catalyst to be used for gas-phase catalytic ammoxidation reaction of propane or isobutane, the oxide catalyst comprising a composite oxide, wherein the composite oxide comprises a catalytically active species to be isolated from the composite oxide using a hydrogen peroxide solution, and the catalytically active species has an average composition represented by the following formula (1) in STEM-EDX measurements; 1. An oxide catalyst to be used for gas-phase catalytic ammoxidation reaction of propane or isobutane , the oxide catalyst comprising a composite oxide , whereinthe composite oxide comprises a catalytically active species to be isolated from the composite oxide using a hydrogen peroxide solution, and [{'br': None, 'Formula, {'br': None, 'sub': 1', 'a', 'b', 'c', 'd', 'e', 'n, 'MoVSbNbWXO\u2003\u2003(1)'}], 'the catalytically active species has an average composition represented by the following formula (1) in STEM-EDX measurements;'}wherein X represents at least one selected from the group consisting of Te, Ce, Ti, and Ta; a, b, c, and d satisfy relations represented by formulae of 0.050≤a≤0.200, 0.050≤b≤0.200, 0.100≤c≤0.300, 0≤d≤0.100, 0≤e≤0.100 , and a≤c; and n represents a number determined by valences of the other elements.2. The oxide catalyst according to claim 1 , wherein the formula (1) satisfies a relation represented by a formula of 1.1×a≤c.3. The oxide catalyst according to claim 1 , wherein the formula (1) satisfies a relation represented by a formula of 1.3×a≤c.4. The oxide catalyst according to claim 1 , wherein the formula (1) satisfies a relation represented by a formula of 8.00≤100×b/(1+a)≤10.00.5. The oxide catalyst according to claim 1 , claim 1 , whereinthe oxide catalyst comprises silica as a carrier carrying the complex oxide, and{'sub': '2', 'a mass proportion of the silica is 30 to 70% by mass in terms of SiObased on a total amount of the oxide catalyst.'}6. An oxide catalyst to be used for gas-phase catalytic ammoxidation ...

CATALYST FOR SELECTIVE HYDROGENATION OF DIENES, PREPARATION METHOD AND APPLICATION THEREOF

A mixed metal oxide catalyst for selective hydrogenation of dienes comprising a Group VIII metal, a trivalent metal, a Group IA metal, a Group IVB metal, a Group IIB metal, two Group VIB metals and SiO2-Al2O3 as balance. The catalyst comprises 10-40 wt % of Group VIII metal, 5-30 wt % of trivalent metal, 0.1-8 wt % of Group IA metal, 0.1-8 wt % of Group IVB metal, 0.1-30 wt % of Group IIB metal, 5-50 wt % of two Group VIB metals and 10-30 wt % of SiO2-Al2O3, based on the catalyst in terms of oxide, and has 150-300 m2/g of specific surface area, 0.4-0.8 ml/g of pore volume. 1. A catalyst for selective hydrogenation of dienes , wherein a mixed metal oxide catalyst comprises a trivalent metal , one Group IA metal , one Group JIB metal , one Group IVB metal , one Group VIII metal , two Group VIB metals and a certain amount of SiO—AlO; SiOis about 90-99% in SiO—AlO;{'sub': 2', '2', '3, 'on oxide basis of catalysts, said catalyst comprises 10-40 wt % of Group VIII metals, 5-30 wt % of trivalent metals, 0.1-8 wt % of Group IA metal, 0.1-8 wt % of Group IVB metal, 0.1-30 wt % of Group IIB metal, 5-50 wt % of two Group VIB metals, and 10-30 wt % of SiO—AlO;'}the molar ratio of two Group VIB metals is in the range of from 3:1 to 1:3;{'sup': '2', 'the surface area of catalyst is 150-300 m/g and pore volume is 0.4-0.8 ml/g.'}2. The catalyst of claim 1 , wherein the trivalent metal is selected from Cr or Al;Group IA metal is selected from Na or K; Group IVB metal is selected from Ti or Zr; Group IIB metal is selected from Zn; Group VIII metal is selected from nickel or cobalt, and two Group VIB metals are selected from molybdenum and tungsten.3. The catalyst of claim 1 , wherein Group VIB metals are selected from Mo and W claim 1 , Group IIB metal is selected from Zn claim 1 , Group IA metal is selected from K claim 1 , Group IVB metal is selected from Ti claim 1 , Group VIII metal is selected from Ni and trivalent metal is selected from Al.4. A method of preparation of the ...

Method For Producing Unsaturated Carboxylic Acid And Supported Catalyst

The present invention relates to a method for producing an unsaturated carboxylic acid using a catalyst having both a high catalytic performance and a high mechanical strength, and in the method, a supported catalyst obtained by feeding a liquid binder component and a catalytic active component containing molybdenum and vanadium and/or a precursor thereof into a rolling granulator and conducting granulation at a relative centrifugal acceleration of 0.5 G or more and 30 G or less is used. 16-. (canceled)7. A method for producing an unsaturated carboxylic acid , comprising:using a supported catalyst obtained by feeding a liquid binder component and a catalytic active component containing molybdenum and vanadium and/or a precursor thereof into a rolling granulator and conducting granulation at a relative centrifugal acceleration of 0.5 G or more and 30 G or less.8. The method for producing an unsaturated carboxylic acid according to claim 7 ,wherein the catalytic active component and/or the precursor thereof of the supported catalyst contains molybdenum, vanadium and copper.9. The method for producing an unsaturated carboxylic acid according to claim 7 ,wherein the catalytic active component and/or the precursor thereof of the supported catalyst contains molybdenum, vanadium and phosphorus.10. A supported catalyst claim 7 , which is obtained by feeding a liquid binder component and a catalytic active component containing molybdenum and vanadium and/or a precursor thereof into a rolling granulator and conducting granulation at a relative centrifugal acceleration of 0.5 G or more and 30 G or less.11. The supported catalyst according to claim 10 ,wherein the catalytic active component and/or the precursor thereof contains molybdenum, vanadium and copper.12. The supported catalyst according to claim 10 ,wherein the catalytic active component and/or the precursor thereof contains molybdenum, vanadium and phosphorus. The present invention relates to a method for producing an ...

METHOD FOR PRODUCING OXIDE CATALYST AND METHOD FOR PRODUCING UNSATURATED NITRILE

A method for producing an oxide catalyst according to the present invention is a method for producing an oxide catalyst containing Mo, V, Sb, and Nb, the method including: 1. A method for producing an oxide catalyst comprising Mo , V , Sb , and Nb , the method comprising:a raw material preparation step of obtaining an aqueous mixed liquid comprising Mo, V, Sb, and Nb;an aging step of subjecting the aqueous mixed liquid to aging at more than 30° C.;a drying step of drying the aqueous mixed liquid, thereby obtaining a dried powder; anda calcination step of calcining the dried powder, thereby obtaining the oxide catalyst, [{'sub': '3', '(I) in the raw material preparation step, the aqueous mixed liquid is prepared by mixing a Nb raw material liquid comprising Nb with a MoVSb raw material liquid comprising Mo, V, and Sb, wherein ammonia is added to at least one of the MoVSb raw material liquid, the Nb raw material liquid, and the aqueous mixed liquid such that a molar ratio in terms of NH/Nb in the aqueous mixed liquid is adjusted to be 0.7 or more, and in the aging step, a temperature of the aqueous mixed liquid is adjusted to more than 50° C.;'}, '(II) in the aging step, a temperature of the aqueous mixed liquid is adjusted to more than 65° C.; and', {'sub': 2', '2, '(III) in the raw material preparation step, the aqueous mixed liquid is prepared by mixing a Nb raw material liquid comprising Nb with a MoVSb raw material liquid comprising Mo, V, and Sb, wherein a molar ratio in terms of HO/Nb in the Nb raw material liquid is adjusted to less than 0.2, and in the aging step, a temperature of the aqueous mixed liquid is adjusted to more than 50° C.'}], 'wherein, in the raw material preparation step and/or the aging step, precipitation of Nb is facilitated by performing at least one operation selected from the group consisting of the following (I) to (III)3. The method for producing the oxide catalyst according to claim 1 , wherein the oxide catalyst comprises 30% by mass ...

BISMUTH MOLYBDATE-BASED CATALYST HAVING ZEOLITE COATING LAYER, METHOD OF PREPARING THE SAME, AND METHOD OF PREPARING 1,3-BUTADIENE USING THE SAME

The present invention relates to a bismuth molybdate-based composite oxide catalyst having a microporous zeolite coating layer on the surface thereof and thus having high selectivity for 1,3-butadiene, a method of preparing the same, and a method of preparing 1,3-butadiene using the same. The catalyst has a microporous zeolite coating layer, and thus enables only gaseous products (light) to selectively pass through the zeolite coating layer, improving selectivity for 1,3-butadiene. 1. A bismuth molybdate-based composite oxide catalyst for preparing 1 ,3-butadiene , comprising:a bismuth molybdate-based composite oxide expressed by Formula 1 below; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'y, 'MoBiFeCoEO\u2003\u2003[Formula 1]'}, 'a zeolite coating layer having micropores and formed on the surface of the bismuth molybdate-based composite oxidewhere, E is at least one selected from the group consisting of nickel, sodium, potassium, rubidium, and cesium;the a, b, c, d and e each is 0.001 to 1; andthe y is a value determined to adjust a valence by other element.2. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the E is at least one selected from the group consisting of cesium and potassium.3. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the zeolite is silicon-based zeolite.4. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the micropores have a diameter of 0.2 to 1.5 nm.5. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the zeolite coating layer has a thickness of 50 to 1 claim 1 ,000 nm.6. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the catalyst is in the form of a pellet.7. A method of preparing a bismuth molybdate-based composite oxide catalyst for preparing 1 claim 1 ,3-butadiene claim 1 , the catalyst including a zeolite coating layer having micropores on the surface thereof ...

METHOD FOR STOPPING AMMOXIDATION REACTION

An object of the present invention is to provide a method for, when stopping an ammoxidation reaction of propane, stopping the ammoxidation reaction safely and quickly, without causing a deterioration in catalytic activity or acrylonitrile yield. The method for stopping an ammoxidation reaction includes a supply stopping step of stopping a supply of propane, an oxygen-containing gas, and ammonia to a reactor where an ammoxidation reaction of propane is being carried out using a catalyst, and a reaction stopping step of supplying an inert gas to the reactor in an amount 10 to 300 times the catalyst volume per hour until the catalyst temperature reaches 380° C. or less, wherein after the supply stopping step, a time required until the catalyst temperature decreases to 360° C. or less is within 10 hours. 1. A method for stopping an ammoxidation reaction comprising:a supply stopping step of stopping a supply of propane, an oxygen-containing gas, and ammonia to a reactor where an ammoxidation reaction of propane is being carried out using a catalyst; anda reaction stopping step of supplying an inert gas to the reactor in an amount 10 to 300 times the catalyst volume per hour until a catalyst temperature reaches 380° C. or less,wherein after the supply stopping step, a time required until the catalyst temperature decreases to 360° C. or less is within 10 hours.2. The method for stopping an ammoxidation reaction according to claim 1 , wherein the catalyst is a catalyst comprising Mo claim 1 , V claim 1 , Nb claim 1 , and Sb.3. A method for producing an acrylonitrile comprising:a supply stopping step of stopping a supply of propane, an oxygen-containing gas, and ammonia to a reactor where an ammoxidation reaction of propane is being carried out using a catalyst; anda reaction stopping step of supplying an inert gas to the reactor in an amount 10 to 300 times the catalyst volume per hour until a catalyst temperature reaches 380° C. or less,wherein after the supply stopping ...

PREPARATION OF BUTADIENE BY OXIDATIVE DEHYDROGENATION OF N-BUTENE AFTER PRECEDING ISOMERIZATION

The invention relates to a process for preparing 1,3-butadiene by heterogeneously catalysed oxidative dehydrogenation of n-butene, in which a butene mixture comprising at least 2-butene is provided. The problem that it addresses is that of specifying a process for economically viable preparation of 1,3-butadiene on the industrial scale, which is provided with a butene mixture as raw material, wherein the 1-butene content is comparatively low compared to the 2-butene content thereof, and in which the ratio of 1-butene to 2-butene is subject to variation. This problem is solved by a two-stage process in which, in a first stage, the butene mixture provided is subjected to a heterogeneously catalysed isomerization to obtain an at least partly isomerized butene mixture, and in which the at least partly isomerized butene mixture obtained in the first stage is then subjected, in a second stage, to oxidative dehydrogenation. The two-stage process leads to higher butadiene yields compared to the one-stage process. 1. Process for preparing 1 ,3-butadiene by heterogeneously catalysed oxidative dehydrogenation of n-butene , in which a butene mixture comprising at least 2-butene is provided ,characterized in thata) the butene mixture provided is subjected to a heterogeneously catalysed isomerization to obtain an at least partly isomerized butene mixture,b) and in that the at least partly isomerized butene mixture is then subjected to oxidative dehydrogenation.2. Process according to claim 1 ,characterized in thatthe isomerization is effected in such a way that 2-butene present in the butene mixture provided is isomerized to 1-butene, such that the 1-butene content in the at least partly isomerized butene mixture has increased compared to the butene mixture provided.3. Process according to claim 1 ,characterized in thatthe isomerization is effected in such a way that 1-butene present in the butene mixture provided is isomerized to 2-butene, such that the 1-butene content in the ...

Catalyst For Production Of Butadiene, Process For Producing The Catalyst, And Process For Producing Butadiene Using The Catalyst

A catalyst for producing butadiene using n-butene as a raw material, a process for producing the same and a process for producing butadiene using the catalyst are provided, and specifically, a catalyst for producing butadiene by gas-phase contact oxidative dehydrogenation of n-butene, which is capable of stably producing butadiene in a high yield from the beginning of the reaction, a process for producing the same and a process for producing butadiene, in which the catalyst is a shaped catalyst containing a complex metal oxide having molybdenum as an essential ingredient, wherein the pore volume of macropores is 80% or more, more preferably 90% or more, based on the total pore volume, are provided.

APPARATUS FOR PRODUCING MIXED SOLUTION AND METHOD FOR PREPARING MIXED SOLUTION

An apparatus for producing a mixed solution, comprising a mixing vessel for preparing an aqueous mixed solution containing a dicarboxylic acid and an Nb compound and a filter for the aqueous mixed solution connected to the mixing vessel via a pipe, the mixing vessel being anticorrosive and equipped with a stirring unit, a heating unit and a cooling unit for the aqueous mixed solution, wherein the aqueous mixed solution prepared in the mixing vessel is fed to the filter via the pipe and filtered in the filter under increased pressure. 1. A method for preparing a mixed solution , comprising the steps of:heating and stirring a dicarboxylic acid, an Nb compound and water in an anticorrosive mixing vessel so as to obtain an aqueous mixed solution;cooling and stirring the aqueous mixed solution and;feeding the aqueous mixed solution into a filter to filter under an increased pressure.2. The method for preparing the mixed solution according to claim 1 , wherein a temperature of the aqueous mixed solution is adjusted in the filtration step.3. The method for preparing the mixed solution according to claim 1 , wherein in the step of heating and stirring the dicarboxylic acid claim 1 , the Nb compound and the water in an anticorrosive mixing vessel to obtain the aqueous mixed solution claim 1 , a niobium and a dicarboxylic acid are dissolved in the aqueous mixed solution.4. The method for preparing the mixed solution according to claim 1 , wherein in the step of cooling and stirring the aqueous mixed solution claim 1 , the dicarboxylic acid is deposited from the aqueous mixed solution.5. The method for preparing the mixed solution according to claim 1 , further comprising the steps of:measuring a concentration of the obtained filtrate after the filtration step andadding a dicarboxylic acid and/or water to the filtrate when a dicarboxylic acid/Nb molar ratio is not within a predetermined range.6. The method for preparing the mixed solution according to claim 5 , wherein the ...

PROCESS FOR PRODUCING CHLOROSILANES USING A CATALYST SELECTED FROM THE GROUP OF CO, MO, W

Generally unusable or difficultly useable dusts of ultrahigh purity silicon can be used to produce chlorosilanes under reasonable reaction conditions by employing a catalyst containing one or more of Co, Mo, W. The process may be incorporated into an integral plant for the production of polycrystalline silicon. 114.-. (canceled)15. A process for producing chlorosilanes in a fluidized bed reactor comprising: reacting a hydrogen chloride-containing reaction gas with a particulate contact mass containing ultrahigh purity silicon having a purity of >99.9% and a catalyst , wherein the catalyst comprises at least one element from the group comprising Co , Mo and W , wherein the chlorosilanes have the general formula HSiCland/or HClSiwhere n=1-4 and m=0-4 , and wherein the catalyst is present in the contact mass in a proportion of 100 to 400 ppmw , based on the weight of the contact mass.16. The process of claim 15 , wherein the catalyst further comprises at least one element from the group comprising Zn claim 15 , Cr and Ni.17. The process of claim 15 , wherein the catalyst is present in the contact mass in metallic claim 15 , oxidic claim 15 , carbidic claim 15 , alloyed and/or salt-like form.18. The process of claim 15 , wherein the contact mass is a byproduct in the deposition of polycrystalline silicon and/or in the mechanical processing of polycrystalline/multicrystalline or single-crystal silicon.19. The process of claim 15 , wherein the catalyst is a constituent of an abraded material from comminution equipment claim 15 , plant parts and/or pipelines associated with silicon production or processing.20. The process of claim 15 , wherein the ultrahigh purity silicon has a Sauter mean diameter dof 0.5 to 150 μm.21. The process of claim 15 , wherein the ultrahigh purity silicon has a Sauter mean diameter dof 1 to 100 μm.22. The process of claim 15 , wherein the ultrahigh purity silicon has a Sauter mean diameter dof 5 to 80 μm.23. The process of claim 15 , wherein the ...

METHOD OF PREPARING BUTADIENE

The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2. 1. A method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation , wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2.2. The method according to claim 1 , wherein the butene is 1-butene.3. The method according to claim 1 , wherein claim 1 , in the oxidative dehydrogenation claim 1 , a gas hourly space velocity (GHSV) is 30 to 80 hBE.4. The method according to claim 1 , wherein the composite metal oxide catalyst comprises a composite metal oxide represented by Formula 1 below:{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'y, 'MoBiFeCoEO\u2003\u2003[Formula 1]'}wherein E is at least one selected from the group consisting of nickel, sodium, potassium, rubidium, and cesium; when a is 12, each of b, c, d, and e is 0.1 to 10, 0.1 to 10, 1 to 20, 0 to 5; y is a value determined to adjust valence to other ingredients.5. The method according to claim 1 , wherein claim 1 , in the oxidative dehydrogenation claim 1 , at least one selected from the group consisting of steam claim 1 , carbon dioxide claim 1 , and nitrogen is further included.6. The method according to claim 5 , wherein claim 5 , in the reaction claim 5 , a mole ratio of butene:oxygen:steam:nitrogen is 1:1.8 to 2.2:1 to 12:10 to 307. The method according to claim 1 , wherein the reactor is a tubular reactor claim 1 , a tank reactor claim 1 , a fluidized bed reactor claim 1 , or a fixed bed reactor. This application claims the benefit of Korean Patent Application No. 10-2014-0181338 filed on 16 Dec. 2014 and Korean Patent Application No. 10-2015-0164750 filed on 24 Nov. ...

Method for Producing Butadiene

A method for producing butadiene comprises a step of obtaining a product gas containing butadiene, by feeding a raw-material gas containing straight-chain butene and an oxygen-containing gas containing molecular oxygen to a reactor and performing oxidative dehydrogenation reaction in the presence of a catalyst, wherein the catalyst comprises a composite oxide containing molybdenum and bismuth, and the concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.05 mol % to 7.0 mol %. 1. A method for producing butadiene , comprising:a step of obtaining a product gas containing butadiene, by feeding a raw-material gas containing straight-chain butene and an oxygen-containing gas containing molecular oxygen to a reactor and performing oxidative dehydrogenation reaction in the presence of a catalyst, wherein:the catalyst comprises a composite oxide containing molybdenum and bismuth; anda concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.05 mol % to 7:0 mol %.2. The method according to claim 1 , wherein the concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.2 mol % to 6.0 mol %.3. The method according to claim 1 , wherein the concentration of the straight-chain butene in the raw-material gas is 60 mol % or more. The present invention relates to a method for producing butadiene.Methods for producing butadiene by oxidative dehydrogenation reaction of straight-chain butene in the presence of a catalyst have been conventionally known (for example, Patent Literature 1 and Patent Literature 2).In a method for producing butadiene, for example, a mixture containing straight-chain butene and butanes obtained by removing butadiene from a C4 fraction such as a C4 fraction produced as by-product by naphtha cracking, or a C4 fraction produced as by-product by fluid catalytic cracking is used as a raw material.Furthermore, as a catalyst for such oxidative dehydrogenation reaction, ...

RING-SHAPED CATALYST FOR PREPARING ACROLEIN AND ACRYLIC ACID, AND USE THEREOF (As Amended)

The present invention relates to a catalyst for preparing acrolein and acrylic acid, and use of the same. The catalyst according to the present invention can be uniformly packed in the reactor and collapse of the catalyst can be minimized because it has excellent mechanical properties, and it can lower initial pressure of the reaction by securing stable pore spaces and can be stably used for a long period of time. In addition, the preparation method of acrolein and acrylic acid according to the present invention can provide more improved production efficiency by using the catalyst. 1. A ring catalyst for preparing acrolein and acrylic acid ,including a mixture of an catalytic active ingredient including at least molybdenum (Mo) and bismuth (Bi), and an inorganic fiber, andhaving a ring shape, and {'br': None, 'i': L', 'D', '−D, 'sub': f', 'e', 'i, '0.1≦[2/()]<0.2\u2003\u2003[Relational Equation 1]'}, 'satisfying the following Relational Equation 1{'sub': f', 'e', 'i, 'wherein, in said Relational Equation 1, Lis the number average length of the inorganic fiber, Dis the external diameter of the ring catalyst, and Dis the internal diameter of the ring catalyst.'}2. The ring catalyst according to claim 1 , satisfying the following Relational Equation 2:{'br': None, 'i': L', '/D, 'sub': c', 'e, '0.2≦≦1.5\u2003\u2003[Relational Equation 2]'}{'sub': c', 'e, 'wherein, in said Relational Equation 2, Lis the longitudinal length of the ring catalyst, and Dis the external diameter of the ring catalyst.'}3. The ring catalyst according to claim 2 , wherein the ring catalyst has at least two shapes having different L/D.4. The ring catalyst according to claim 3 , wherein the ring catalyst includes 2 kinds or more of catalysts of the first type having L/Dof 0.2 to 1 and the second type having L/Dof 0.6 to 1.5.5. The ring catalyst according to claim 1 , wherein the catalytic active ingredient is represented by the following Chemical Formula 1:{'br': None, 'sub': a', 'b', 'c', 'd', 'e ...

METHOD OF PREPARING MULTICOMPONENT COMPOSITE METAL OXIDE CATALYST

Provided are a method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst, and a multicomponent bismuth-molybdenum composite metal oxide catalyst prepared thereby. According to the preparation method, since the almost same structure as that of a typical quaternary bismuth-molybdenum catalyst may be obtained by performing two-step co-precipitation, i.e., primary and secondary co-precipitation, of metal components constituting the catalyst, the reduction of catalytic activity due to the deformation of the structure of the catalyst may be suppressed. Also, since the multicomponent bismuth-molybdenum composite metal oxide catalyst may adjust the number of lattice oxygens consumed during a reaction to increase the catalytic activity, the multicomponent bismuth-molybdenum composite metal oxide catalyst may reduce the formation of by-products and may improve the conversion rate of reactant and the yield of desired product in a catalytic reaction process using the above catalyst, particularly, a catalytic reaction process under a relatively low temperature condition. 1. A method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst represented by Formula 1 , the method comprising steps of:(1) preparing a first solution by mixing a divalent or trivalent cationic metal precursor solution, a monovalent cationic metal precursor solution, and a bismuth precursor solution;(2) preparing a second solution by dropwise adding the first solution to a molybdenum precursor solution and performing primary co-precipitation;(3) preparing a fourth solution by dropwise adding a third solution including a tetravalent cationic metal precursor during an aging process of the second solution and performing secondary co-precipitation; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, '[MoBiCDEO]\u2003\u2003[Formula 1]'}, '(4) sintering after drying the fourth solutionwherein C represents a divalent or trivalent cationic metal element,D ...

OXIDATION CATALYST FOR PRODUCTION OF BUTADIENE AND METHOD OF PREPARING THE SAME

Disclosed is a multi-component bismuth molybdate catalyst for production of butadiene which comprises bismuth, molybdenum and at least one metal having a monovalent, divalent or trivalent cation, and further comprises cesium and potassium and thus has advantages of improving conversion ratio, yield and selectivity of butadiene and of providing stability of process operation. 1. A multi-component bismuth molybdate catalyst for production of butadiene comprising:bismuth;molybdenum; andat least one metal having a monovalent, divalent or trivalent cation,wherein the multi-component bismuth molybdate catalyst further comprises cesium and potassium.2. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the catalyst is used for producing 1 claim 1 ,3-butadiene from a mixture containing butene.3. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the cesium and the potassium are present in a molar ratio (Cs:K) of 1:0.001 to 1:10.4. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the monovalent claim 1 , divalent or trivalent cationic metal comprises at least one selected from the group consisting of cobalt claim 1 , zinc claim 1 , magnesium claim 1 , manganese claim 1 , nickel claim 1 , copper claim 1 , iron claim 1 , sodium claim 1 , aluminum claim 1 , vanadium claim 1 , zirconium claim 1 , tungsten and silicon.5. The multi-component bismuth molybdate catalyst according to claim 4 , wherein the monovalent claim 4 , divalent or trivalent cationic metal comprises at least one selected from the group consisting of cobalt claim 4 , manganese claim 4 , nickel and iron.6. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the catalyst comprises bismuth claim 1 , molybdenum claim 1 , iron claim 1 , cobalt claim 1 , potassium and cesium.7. The multi-component bismuth molybdate catalyst according to claim 6 , wherein a molar ratio of molybdenum to bismuth to iron to cobalt ...

Method for producing conjugated diene

The invention is concerned with a method for producing a conjugated diene including a reaction step of subjecting a raw material gas containing a monoolefin having a carbon atom number of 4 or more to an oxidative dehydrogenation reaction with a gas containing molecular oxygen in the presence of a catalyst, to obtain a reaction product gas containing a conjugated diene; and a cooling step of cooling the reaction product gas, wherein in the cooling step, a cooling agent is supplied into a cooling column and brought into contact with the reaction product gas; the cooling agent discharged from the cooling column is then cooled by a heat exchanger; a precipitate dissolved in the cooling agent is precipitated within the heat exchanger and recovered; and the cooling agent from which the precipitate has been recovered is circulated into the cooling column.

Activated multimetal oxide catalyst

Catalytic method for the production of nitriles from alcohols

The invention relates to a catalytic method for the production of nitriles form alcohols, such as polyols, for example glycerol, a reaction known as ammoxidation. For this purpose, the alcohol is reacted with a nitrogen source, such as, for example, ammonia, in the presence of an oxidising agent, such as oxygen or hydrogen peroxide, and in the presence of a catalyst. Alumina-supported catalysts containing oxides of V, Nb and Sb achieve yields above 48% in ammoxidation of glycerol to acrylonitrile. The invention is particularly suitable for obtaining high-added-value products such as acrylonitrile from glycerol which is produced as a by-product in biofuel production.

Catalysts preparation process based on molybden and/or tungsten oxides and oxides of other metals

Method for producing catalyst and method for producing acrylonitrile

A method for producing a catalyst according to the present invention includes: a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid; a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; and a calcination step of calcining the dried particle, wherein the preparation step comprises: a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; and a step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron.

Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid

Process for producing α,β-unsaturated nitrile

Procedimiento para reducir la cantidad de material residual durante la produccion de acrilonitrilo.

UN PROCESO PARA LA REDUCCION EN LA CANTIDAD DE MATERIAL RESIDUAL EN LA CANTIDAD DE MATERIAL RESIDUAL GENERADO DURANTE LA FABRICACION DE ACRILONITRILO QUE COMPRENDE LA INTRODUCCION DE UNA CANTIDAD ADICIONAL DE OXIGENO CONTENIENDO GAS, PREFERIBLEMENTE AIRE, EN LA AUSENCIA SUSTANCIAL DE CUALQUIER COMPUESTO OXIGENADO, EN LA PARTE SUPERIOR DEL REACTOR DE LECHO FLUIDO PARA QUE REACCIONE CON AL MENOS PARTE DEL AMONIACO SIN REACCION PARA REDUCIR LA CANTIDAD DE AMONIACO SIN REACCION PRESENTE EN EL EFLUENTE DEL REACTOR.

Method for the production of at least one partial propylene oxidation and/or ammoxidation product

Disclosed is a method for producing at least one partial propylene oxidation and/or ammoxidation product, according to which the propylene is produced from raw propane by means of dehydration and is subjected to a heterogeneously catalyzed partial gas phase oxidation and/or partial gas phase ammoxidation in the presence of unreacted propane as a component of a gas mixture 2 containing < 1 percent by volume of butene-1.

Katalyzátor

Katalis

一种加氢处理催化剂及其制备方法和应用

本发明公开了一种加氢处理催化剂，其包括金属活性组分和负载所述金属活性组分的载体，其中，所述金属活性组分包含WO 3 、NiO、CoO和MoO 3 ，所述载体的结构中包括MgO和含孔道的金属氧化物基体，所述MgO均匀分散在含孔道的金属氧化物基体中，且至少大部分MgO均匀分散在所述含孔道的金属氧化物基体的孔道表面。该加氢处理催化剂在低温条件下兼具高脱硫、脱氮、烯烃饱和性能，是性能优异的馏分油加氢精制催化剂，适用于所有馏分油以及煤制油的加氢处理过程。本发明还公开了该加氢处理催化剂的制备方法和应用。

Method for producing acrylonitrile, catalyst for use therein and the method for preparing the same

Method for producing acrylonitrile, catalyst for use therein and the method for preparing the same

process for removing unreacted ammonia from an effluent from a catalyst bed used in a hydrocarbon amoxidation reaction.

Method of coating a catalyst to a support for use in acrolein oxidation

A method of coating a catalyst to a support for use in acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in a liquid to form a suspension of particles of the catalyst. The precipitation of the catalyst particles is controlled by homogenizing the catalyst particles suspended in the liquid. The phase separation between the catalyst particles and the liquid can be substantially slowed down by the homogenization. Then the catalyst is coated on an inert support by applying the suspension of the catalyst particles to the support. In the suspension, the total weight of water is about 0.8 to about 5 times of the total weight of the metallic salts in the catalyst. This method of preparing suspension minimizes the amount of the liquid required to dissolve the metallic salts, which reduces the amount of time and energy to be used in evaporating the liquid from the suspension. Additionally, in obtaining catalyst from the suspension prepared by this method, it is possible to avoid the deterioration of the catalytic performance since less heat is required to evaporate the water.

触媒組成物

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

生产丙烯腈的催化剂

本发明是一种用于丙烯氨氧化法制造丙烯腈的流化床催化剂，是由二氧化硅载体和化学式如下的组合物组成：A a C c D d Na f Fe g Bi h M i Mo 12 O x 式中A为选自钾、铷、铯、钐、铊中的至少一种或它们的混合物；C为选自磷、砷、硼、锑、铬中的至少一种或它们的混合物；D为选自镍、钴或它们的混合物；M为选自钨、钒或它们的混合物。本发明催化剂特别适用于在较高的反应压力和高丙烯负荷条件下使用，仍可保持很高的丙烯腈单收，且具有氨转化率高的特点。特别适用于原有丙烯腈工厂提高丙烯腈生产能力需要，对新建工厂也可减少催化剂的投资费用，减轻三废污染。

Multimetalloxidmassen

Molybdän, Vanadin, Antimon, eines oder mehrere der Elemente W, Nb, Ta, Cr und Ce sowie Nickel und gegebenenfalls eines oder mehrere der Elemente Cu, Zn, Co, Fe, Cd, Mn, Mg, Ca, Sr und Ba enthaltende Multimetalloxidmassen mit einer 2-Komponentenstruktur, sowie deren Verwendung zur gasphasenkatalytisch oxidativen Herstellung von Acrylsäure.

Method for the catalytic gas-phase oxidation of propene into acrylic acid

A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID, IN WHICH THE REACTION GAS STARTING MIXTURE IS OXIDIZED, WITH AN INCREASED PROPENE LOADING, IN A FIRST REACTION STAGE, OVER A FIRST FIXED-BED CATALYST AND THEN THE ACROLEIN-COATING PRODUCT GAS MIXTURE OF THE FIRST REACTION STAGE IS OXIDIZED, IN A SECOND REACTION STAGE, WITH AN INCREASED ACROLEIN LOADING, OVER A SECOND FIXED-BED CATALYST, THE CATALYST MOLDINGS IN BOTH REACTION STAGES HAVING AN ANNULAR GEMETRY.

Catalytic gas-phase oxidation of propene to acrylic acid

A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID, IN WHICH THE REACTION GAS STARTING MIXTURE IS OXIDIZED, WITH A HIGH PROPENE LOADING, IN A FIRST REACTION STAGE, OVER A FIRST FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES A, B, THE REACTION ZONE B BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE A, AND THE ACROLEIN-CONTAINING PRODUCT GAS MIXTURE OF THE FIRST REACTION STAGE IS THEN OXIDIZED IN A SECOND REACTION STAGE, WITH A HIGH ACROLEIN LOADING, OVER A SECOND FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES C, D, THE REACTION ZONE D BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE C.

Process for the preparation of multimetal oxide materials

Beschrieben wird ein Verfahren zur Herstellung einer Mo, V, Cu und gegebenenfalls weitere Elemente enthaltenden mehrphasigen Multimetalloxidmasse, bei dem man wenigstens eine Phase getrennt vorbildet und in einer plastisch verformbaren Vorläufermasse einer weiteren Phase dispergiert. Das Gemisch wird getrocknet und calziniert. Die Multimetalloxidmasse ist als aktive Masse von Katalysatoren zur kathalytischen Oxidation organischer Verbindungen in der Gasphase, insbesondere zur Oxidation von Acrolein zu Acrylsäure, geeignet. A process is described for producing a multi-phase multimetal oxide composition containing Mo, V, Cu and optionally further elements, in which at least one phase is separately formed and dispersed in a plastically deformable precursor composition of a further phase. The mixture is dried and calcined. The multimetal oxide mass is suitable as an active mass of catalysts for the cathalytic oxidation of organic compounds in the gas phase, in particular for the oxidation of acrolein to acrylic acid.

Composite oxide catalyst and method for producing acrylic acid using the same

Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount ratio of cesium to bismuth, a certain relative amount ratio of iron to bismuth and a certain relative amount ratio of bismuth, iron, cesium and certain other metals to molybdenum and, optionally, tungsten. For a catalyst of the formula: Mo 12 Bi a W b Fe c Co d Ni e Sb f Cs g Mg h Zn i P j O x wherein a is 0.1 to 1.5, b is 0 to 4, c is 0.2 to 5.0, d is 0 to 9, e is 0 to 9, f is 0 to 2.0, g is from 0.4 to 1.5, h is 0 to 1.5, i is 0 to 2.0, j is 0 to 0.5 and x is determined by the valences of the other components, c:g=3.3-5.0, c:a=2.0-6.0 and (3a+3c+2d+2e+g+2h+2i)/(2×12+2b)=0.95-1.10.

Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount ratio of cesium to bismuth, a certain relative amount ratio of iron to bismuth and a certain relative amount ratio of bismuth, iron, cesium and certain other metals to molybdenum and, optionally, tungsten. For a catalyst of the formula: Mo 12 Bi a W b Fe c Co d Ni e Sb f Cs g Mg h Zn i P j O x wherein a is 0.1 to 1.5, b is 0 to 4, c is 0.2 to 5.0, d is 0 to 9, e is 0 to 9, f is 0 to 2.0, g is from 0.4 to 1.5, h is 0 to 1.5, i is 0 to 2.0, j is 0 to 0.5 and x is determined by the valences of the other components, c:g=3.3–5.0, c:a=2.0–6.0 and (3a+3c+2d+2e+g+2h+2i)/(2×12+2b)=0.95–1.10.

Production of ring-shaped solid mixed oxide catalysts, useful for the gas phase oxidation of propene, isobutene or tert-butanol to acrolein or methacrolein, comprises thermal treatment to give a specific lateral compressive strength

A process for the production of ring-shaped solid mixed oxide catalysts with a length of 2-11 mm, an outer diameter of 2-11 mm and a wall thickness of 0.75-1.75 mm, comprises production of a fine-particulate mixture from sources of the elementary constituents of the active mass, followed by forming to shape and thermal treatment at elevated temperature to form catalysts having a lateral compressive strength of 12-23 N. A process for the production of ring-shaped solid catalysts (I) having optionally curved faces, whose active mass is of formula (1) or (2), and having a geometry, without reference to any optional curvature of the faces, with a length of 2-11 mm, an outer diameter of 2-11 mm and a wall thickness of 0.75-1.75 mm, comprises production of a fine-particulate mixture from sources of the elementary constituents of the active mass, optionally following addition of forming and/or reinforcing agents, followed by forming of ring-shaped solid catalyst precursor molded articles having optionally curved faces and thermal treatment at elevated temperature to form the catalysts (I) having a lateral compressive strength of 12-23 N. Mo12BiaFebX1cX2dX3eX4fOn (1) (Y1a'Y2b'Ox')p(Y3c'Y4d'Y5e'Y6f'Y7g'Y2h'Oy')q (2) X1 = Ni and/or Co; X2 = Th, an alkali metal or alkaline earth metal; X3 = Zn, P, Ar, B, Sb, Sn, Ce, Pb and/or W; X4 = Si, Al, Ti and/or Zr; a = 0.2-5; b = 0.01-5; c = 0-10; d = 0-2; e = 0-8; f = 0-10; n = a number dependent upon the valency and frequency of non-oxygen elements; Y1 = Bi or Bi and Te, Sb, Sn and/or Cu; Y2 = Mo or Mo and W; Y3 = alkali metal; Th and/or Sm; Y4 = alkaline earth metal, Ni, Co, Cu, Mn, Zn, Sn, Cd and/or Hg; Y5 = Fe or Fe and V, Cr and/or Ce'; Y6 = P, Ar, B and/or Sb; Y7 = rare earth metal, Ti, Zr, Nb, Ta, Rh, Ru, Re, Ag, Au, Al, Ga, In, Si, Ge, Pb, Th and/or U; a' = 0.01-8; b' = 0.1-30; c' = 0-4; d' = 0-20; e' = greater than 0-20; f' = 0-6; g' = 0-15; h' = 8-16; ...

Long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein, involves conducting starting reaction gas mixture and gas mixture of specific composition through fixed catalyst bed at preset conditions

A starting reaction gas mixture which comprises propene, molecular oxygen and inert diluent gases is conducted through fixed catalyst bed. Subsequently, temperature of catalyst bed is increased over time. A gas mixture (G) of molecular oxygen, inert gas and optionally steam, is conducted through the bed at 250-550[deg]C, by long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein. A starting reaction gas mixture which comprises propene, molecular oxygen and at least one inert diluent gas is conducted through a fixed catalyst bed at elevated temperature, whose catalysts are such that their active composition is at least one multi metal oxide which contains element which is molybdenum and/or tungsten and at least one of element which is bismuth, tellurium, antimony, tin and copper, so as to counteract the deactivation of fixed catalyst bed. Subsequently, the temperature of the fixed catalyst bed is increased over time. The gas phase partial oxidation is interrupted at least once per calendar year. A gas mixture (G) consisting of molecular oxygen, inert gas and optionally steam, is conducted through the fixed catalyst bed at 250-550[deg]C, by long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein.

Process of making mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

The present invention is for a process for making a catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, said catalyst containing oxides of molybdenum, bismuth, iron, cesium, tungsten, cobalt, nickel, antimony, magnesium and zinc. The process is a two-part synthesis of the catalyst with the water insoluble components in one part and the water soluble components in the other part. The water insoluble components are co-precipitated to form an intermediate catalyst precursor of a precipitated support incorporating oxides of the metal components. The intermediate catalyst precursor is filtered and washed to remove nitrates. The intermediate catalyst precursor is slurried with the remaining water soluble components. A final catalyst precursor is formed by removing the water and incorporating the water soluble components. This two-part process reduces the amount of nitrates in the final catalyst precursor.

Filling reactor tubes with particles containing multi-element oxide catalyst, for use e.g. in catalytic gas-phase oxidation of acrolein to acrylic acid, involves using catalyst particles containing liquid, e.g. water or glycerol

A method for filling a reactor with catalyst particles (I) containing an active multi-element oxide material (II) (at least on the surface), involves using catalyst particles containing a substance (III) which is liquid at 20[deg]C and 1 atm. Independent claims are also included for (1) a reactor filled with (I); and (2) a method for the production of acrylic acid by the catalytic gas-phase oxidation of acrolein in such a reactor.

一种合成甲基丙烯醛的催化剂及其制备方法

本发明公开了一种用于合成甲基丙烯醛的催化剂及其制备方法，以及将该催化剂应用于叔丁醇或异丁烯气相选择氧化合成甲基丙烯醛的方法。本发明提供的催化剂是由活性组分和载体组成的混合物，活性组分是一种含Mo、Bi、Fe、Co等组分的复合氧化物，载体是石墨、硼、硅或锗粉中的至少一种。用此方法制备的催化剂不但催化活性和选择性高，而且可以使反应的热点得到有效的抑制，从而提高催化剂的使用寿命。

Producing a ring like oxidic mold, useful e.g. in partial gas phase oxidation of e.g. an organic compound, comprising mechanical packing of a powdery material which is brought into the fill space of a die made of a metal compound

Producing a ring like oxidic mold, comprising mechanical packing of a powdery material which is brought into the fill space of a die made out of components that contain at least one metal compound, which is convertible into a metal oxide through a thermal treatment at >= 100[deg] C or at least comprises one metal oxide, or at least one metal oxide and at least one such metal compound. Producing a ring like oxidic mold, comprising mechanical packing of a powdery material which is brought into the fill space of a die made out of components that contain at least one metal compound, which is convertible into a metal oxide through a thermal treatment at >= 100[deg] C or at least comprises one metal oxide, or at least one metal oxide and at least one such metal compound, to form a ring like precursor mold, in which the fill space is present in a die bore which passes through the die material with a vertical axis of drill B from top to bottom and through the inner wall of the die bore, the upper front surface of lower stamp which has been introduced from below movable up and down along the axis of drill B in the die bore, on which the powdery material which has been introduced into the fill space lies, the length of the axis of drill B in an axial initial distance A above the upper front surfaces of the lower stamp present lower front surfaces movable up and down along the axis of drill B introduced upper stamp, whose lower front surfaces moves in the powdery material introduced in the fill space, and the coat surface is limited by a guided tool sprig MF which is guided from the geometrical middle of the upper front surface of the lower stamp outwardly along the axis of drill which reaches up to the geometrical middle of the lower front surface of the upper stamp, so that the axial initial distance A of both the front surfaces is limited for the packing along the axis of drill B to a pre-determined axial end distance E that one can sink the lower stamp and such that ...

THE COMPLEX OXIDE CATALYST OF Bi/Mo/Fe FOR THE OXIDATIVE DEHYDROGENATION OF 1-BUTENE TO 1,3-BUTADIENE AND PROCESS THEREOF

본 발명은 비스무스 몰리브덴 철 복합 산화물 촉매 및 이를 이용한 1-부텐의 산화/탈수소화 반응 촉매에 관한 것으로 기존의 비스무스 몰리브덴 촉매에 비해, 철의 첨가로 인해 열적, 기계적으로 안정성이 우수하며, 전환율과 1,3-부타디엔의 선택도가 높고, 활성 저하가 느린 촉매에 관한 것이다. The present invention relates to a bismuth molybdenum iron composite oxide catalyst and a catalyst for oxidizing / dehydrogenation of 1-butene using the same, compared to the conventional bismuth molybdenum catalyst, due to the addition of iron, thermal and mechanical stability is excellent, and the conversion rate is 1 The present invention relates to a catalyst having high selectivity of, 3-butadiene and a slow activity degradation. 1-부텐, 1,3-부타디엔, 산화/탈수소화 반응, 비스무스, 몰리브덴, 철, 촉매 1-butene, 1,3-butadiene, oxidation / dehydrogenation reaction, bismuth, molybdenum, iron, catalyst

Mechanically stable hollow-cylindrical moulded catalyst body for the gas phase oxidation of an alkene in order to obtain an unsaturated aldehyde and/or an unsaturated carboxylic acid

The invention relates to a hollow-cylindrical moulded catalyst body for the gas phase oxidation of an alkene in order to obtain an α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid, comprising a compacted multi-metal oxide and having an outer diameter AD, an inner diameter ID and a height H, where AD is selected in the range of 3.5 to 4.5 mm, the ratio of q = ID/AD is selected in the range of 0.4 to 0.55, and the ratio of p = H/AD is selected in the range of 0.5 to 1. The moulded catalyst body is mechanically stable and catalyses the partial oxidation of an alkene so as to produce products of value with high selectivity. It guarantees a sufficiently high catalyst mass density for the pelletised catalyst material, as well as a good degree of long-term stability at an acceptable level of pressure loss.

Catalyseur d'oxydation et son utilisation (

Catalyst for the production of acrolein and acrylic acid

A PROCESS FOR PRODUCING ACROLEIN WHICH COMPRISES CATALYTIC OXIDIZING PROPYLENE IN THE VAPOR PHASE WITH OXYGEN AND STEAM IN THE PRESENCE OF NOVEL CATALYST, HAVING SUPERIOR NATURE IN ACTIVITY, AND COMPOSED OF OXIDES OF MO, CO, FE, BI, AND SN WITH OR WITHOUT ONE OR MORE OF AL, NW, W, CR, IN, AND NB, IS DISCLOSED.

METHOD FOR PRODUCING SHELL CATALYSTS

Method for producing an annular shell catalyst and use thereof for producing acrolein

Processes and systems for using silica particles in fluid bed reactor

The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.

Catalyst

Continuous method of manufacturing geometrical moulded products from catalyst k

FIELD: chemistry. SUBSTANCE: invention relates to field of catalysis. Described is method of manufacturing geometrical moulded products from catalyst K, in which active mass represents multi-element oxide, which contains Mo element, Bi and/or V elements, as well as one or several elements from series Co, Ni, Fe, Cu and alkali metals, in which highly dispersed mixture is obtained by means of sources of different elements, said mixture is coarsened to powder by pressing, and moulded product V is formed from said coarser powder by agglomeration; said products are divided into undamaged moulded products V + and damaged moulded products V - , undamaged moulded products V + are made into moulded products from catalyst K, and damaged moulded products V - are crushed and returned into production of highly dispersed mixture. EFFECT: reduction of material loss in the process of catalyst production, improvement of working characteristics of catalyst. 5 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 507 001 (13) C2 (51) МПК B01J B01J C07C C07C 37/00 (2006.01) 35/02 (2006.01) 51/25 (2006.01) 45/35 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (72) Автор(ы): РАЙХЛЕ Андреас (DE), БОРХЕРТ Хольгер (DE), МЮЛЛЕР-ЭНГЕЛЬ Клаус Йоахим (DE), ХОРСТМАНН Катарина (DE), МАХТ Йозеф (DE) (21)(22) Заявка: 2011128398/04, 04.12.2009 (24) Дата начала отсчета срока действия патента: 04.12.2009 (73) Патентообладатель(и): БАСФ СЕ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 12.12.2008 DE 102008054586.4 12.12.2008 US 61/122,129 (43) Дата публикации заявки: 20.01.2013 Бюл. № 2 2 5 0 7 0 0 1 (45) Опубликовано: 20.02.2014 Бюл. № 5 2 5 0 7 0 0 1 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.07.2011 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: WO 2005049200 A1, 02.06.2005. WO 2005049200 A1, 02.06.2005. US 7164039 B2, 16.01.2007. WO 02062737 A2, 15.08.2002. RU 2136364 C1, 10.09.1999. RU 2121872 C1, 20.11. ...

Method of producing catalyst and method of producing acrylonitrile

FIELD: chemistry. SUBSTANCE: invention relates to a method of producing a catalyst and a method of producing acrylonitrile. Described is a method of producing an ammoxidation catalyst, wherein the catalyst comprises: a metal oxide having a total composition represented by formula (1) below; and silica: Mo 12 Bi a Fe b X c Y d Z e O f (1), where X is at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium and barium; Y is at least one element selected from a group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, gallium and indium; Z is at least one element selected from a group consisting of potassium, rubidium and cesium; a, b, c, d, e and f denote atomic fraction of each element and satisfy conditions 0.1≤a≤3.0, 0.1≤b≤3.0, 0.1≤c≤10.0, 0.1≤d≤3.0 and 0.01≤e≤2.0, respectively, and f is the number of oxygen atoms required to satisfy the requirements of atomic valences of other elements present in formula (1), wherein the method includes: a step of preparing a precursor suspension containing molybdenum, bismuth, iron, silica and carboxylic acid; spray drying the precursor suspension to obtain dry particles; and a step for burning dried particles, where the preparation step includes: step (I) mixing the starting material of silica with a carboxylic acid and thereby obtaining a mixed liquid of silica-carboxylic acid; and stage (II) of mixing said mixed liquid of silica-carboxylic acid, molybdenum, bismuth and iron. Described also is an ammoxidation catalyst obtained using the method described above. Methods of producing acrylonitrile include a step for preparing an ammoxidation catalyst using the method described above and a reaction step for reacting propylene, molecular oxygen and ammonia in the presence of said catalyst. EFFECT: method of producing a catalyst which provides high output of acrylonitrile. 11 cl, 2 dwg, 4 tbl, 40 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13 ...

Способ получения (мет)акриловой кислоты или (мет)акролеина

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2006 138 033 (13) A (51) ÌÏÊ C07C 27/14 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2006138033/04, 20.10.2004 (71) Çà âèòåëü(è): ÌÓÖÓÁÈÑÈ ÊÅÌÈÊÀË ÊÎÐÏÎÐÅÉØÍ (JP) (30) Êîíâåíöèîííûé ïðèîðèòåò: 30.04.2004 JP 2004-135311 (43) Äàòà ïóáëèêàöèè çà âêè: 10.05.2008 Áþë. ¹ 13 (87) Ïóáëèêàöè PCT: WO 2005/105714 (10.11.2005) Àäðåñ äë ïåðåïèñêè: 129090, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Å.Å.Íàçèíîé R U (57) Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá ïîëó÷åíè (ìåò)àêðèëîâîé êèñëîòû èëè (ìåò)àêðîëåèíà, âêëþ÷àþùèé â ñåá ïðîöåññ êàòàëèòè÷åñêîãî ãàçîôàçíîãî îêèñëåíè äë ïîëó÷åíè (ìåò)àêðèëîâîé êèñëîòû èëè (ìåò)àêðîëåèíà ïîäà÷åé ïðîïèëåíà, ïðîïàíà èëè èçîáóòèëåíà è ãàçà, ñîäåðæàùåãî ìîëåêóë ðíûé êèñëîðîä, â ðåàêòîð, çàïîëíåííûé êàòàëèçàòîðîì, ãäå ãàç, ñîäåðæàùèé ìîëåêóë ðíûé êèñëîðîä, ïîäàþò â ðåàêòîð, çàïîëíåííûé êàòàëèçàòîðîì, âî âðåì îñòàíîâêè ïðîöåññà êàòàëèòè÷åñêîãî ãàçîôàçíîãî îêèñëåíè . 2. Ñïîñîá ïî ï.1, â êîòîðîì ãàç, ñîäåðæàùèé ìîëåêóë ðíûé êèñëîðîä, ïîäàþò â ðåàêòîð ñ èñïîëüçîâàíèåì óñòðîéñòâà, îáåñïå÷èâàþùåãî áåçîïàñíîñòü äë ïðèìåíåíè âî âðåì îñòàíîâêè ïðîöåññà êàòàëèòè÷åñêîãî ãàçîôàçíîãî îêèñëåíè . Ñòðàíèöà: 1 RU A 2 0 0 6 1 3 8 0 3 3 A (54) ÑÏÎÑÎÁ ÏÎËÓ×ÅÍÈß (ÌÅÒ)ÀÊÐÈËÎÂÎÉ ÊÈÑËÎÒÛ ÈËÈ (ÌÅÒ)ÀÊÐÎËÅÈÍÀ 2 0 0 6 1 3 8 0 3 3 (86) Çà âêà PCT: JP 2004/015873 (20.10.2004) R U (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 27.10.2006 (72) Àâòîð(û): ÄÇÈÍÍÎ Êàìèêàöó (JP), ÎÃÀÂÀ ßñóñè (JP), ÑÓÇÓÊÈ Éîñèðî (JP), ßÄÀ Ñóõåè (JP)

Device for removal of surface substances of catalyst

FIELD: chemistry. SUBSTANCE: invention relates to device for removal of surface substance of catalyst, present on catalyst surface, from catalyst by bringing gas flow in contact with catalyst, located inside main case of device. Claimed device includes: main case, accumulating device for accumulation of catalyst, located in upper part of main case; and return device for return of catalyst, connected with accumulating device. Return device is located in such a way that its lower end is in contact with said gas flow, and part of catalyst, which is in contact with gas flow inside main case, is accumulated by accumulation device and returned inside main case by return device, length of gas flow in direction of gas flow constitutes 55 mm or more, and average rate of gas flow constitutes 80 m/s or more and 500 m/s or less counted per linear rate at 15°C and 1 atm. Invention also relates to method of removal of surface substance of catalyst from catalyst and method of obtaining unsaturated acid or unsaturated nitrile, in which surface substance of catalyst is removed from catalyst by means of claimed device. EFFECT: claimed device makes it possible to effectively remove precipitated out and/or adhered surface substances of catalyst. 8 cl, 7 dwg, 11 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 541 471 C2 (51) МПК B01J 38/04 (2006.01) C07C 253/24 (2006.01) C07C 255/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012144802/04, 26.04.2011 (24) Дата начала отсчета срока действия патента: 26.04.2011 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ИСИИ Юсуке (JP), ФУРУЯ Ясуаки (JP), ФУКУЗОНО Тосихико (JP) 30.04.2010 JP 2010-105511 (43) Дата публикации заявки: 27.04.2014 Бюл. № 12 R U (73) Патентообладатель(и): АСАХИ КАСЕИ КЕМИКАЛЗ КОРПОРЕЙШН (JP) (45) Опубликовано: 20.02.2015 Бюл. № 5 A, 30.08.2007. WO 95/16009 A1, 15.06.1995. RU 2232049 C2, 10.07.2004 (85) Дата начала рассмотрения заявки PCT на ...

Catalyst, method for producing catalyst, method for producing acrylonitrile

본 발명은 몰리브덴과 비스무트와 철을 포함하는 촉매로서, 환원율이 0.20∼5.00％의 범위인 촉매를 제공한다. The present invention provides a catalyst comprising molybdenum, bismuth, and iron, with a reduction rate in the range of 0.20 to 5.00%.

프로펜의 아크릴산으로의 촉매적 기체상 산화 방법

본 발명은, 증가된 프로펜 부하량을 가진 초기의 반응 기체 혼합물을 첫번째 반응 단계 동안에 첫번째 고정층 촉매 위에서 산화시키고, 첫번째 반응 단계의 생성물이고 아크롤레인을 함유하는 기체의 혼합물을 증가된 아크롤레인 부하량 하에서 두번째 반응 단계 동안에 두번째 고정층 촉매 위에서 연속하여 산화시키는 것을 포함하는 방법으로, 촉매 성형체가 상기 양쪽 반응 단계에서 환상 기하형태를 포함하고 있는 것인, 프로펜의 아크릴산으로의 촉매적 기체상 산화 방법에 관한 것이다. 고정층 촉매, 환상 기하형태, 프로펜, 아크릴산, 촉매적 기체상 산화

Method of synthesis of acrylic acid

FIELD: organic chemistry and chemical technology. SUBSTANCE: acrylic acid can be synthesized efficiently by catalytic gas-phase oxidation of acrolein in the presence of molybdenum and vanadium-base catalyst obtained by using the definite substances as parent materials and containing individual metals as components of catalyst. Preferable example of this catalyst is ammonium meta-vanadate and at least one vanadium oxide at vanadium valency above 0 but less 5. Copper nitrate is used as a copper-containing parent material and at least one of antimony oxide as antimony-containing parent materials where antimony valency is above 0 but less 5. EFFECT: improved method of synthesis. 8 cl, 11 tbl зобеггс пы Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ "” 2119 908 ' (51) МПК 13) Сл С 07 С 57/04, 57/055, В 01 3 23128 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 95119416/04, 13.11.1995 (30) Приоритет: 14.11.1994 /Р 279,357/94 14.11.1994 УР 279,358/94 25.11.1994 УР 291,116!94 (46) Дата публикации: 10.10.1998 (56) Ссылки: УР 25914 А, 1975 $1 Ц$ 3775474 А, 1973 4$ 3954855 А, 1976 Са. Кех. 5& тд 1993, м 35, с. 213. (71) Заявитель: Ниппон Сокубаи Ко., Лтд. (4Р) (72) Изобретатель: Митио Танимото (+Р), Итиро Михара (.Р), Татсуя Кавадзири (.Р) (73) Патентообладатель: Ниппон Сокубаи Ко., Лтд. (ЦР) (54) СПОСОБ ПОЛУЧЕНИЯ АКРИЛОВОЙ КИСЛОТЫ (57) Реферат: Акриловая кислота может быть эффективно получена каталитическим газофазным окислением акролеина В присутствии катализатора на основе молибдена и ванадия, полученного путем использования определенных веществ в качестве исходных материалов, содержащих индивидуальные металлы, составляющие катализатор. Предпочтительный пример такого катализатора получают, используя в качестве — ванадийсодержащих исходных материалов метаванадат аммония и по крайней мере один оксид ванадия, у которого валентность ванадия больше 0, но меньше 5, в качестве медьсодержащего исходного материала нитрат меди и в качестве по ...

催化气相氧化丙烯成丙烯酸的方法

本发明公开了一种催化气相氧化丙烯成丙烯酸的方法,其中,反应气体原料混合物在第一反应段中在第一固定床催化剂上以高丙烯负载被氧化,所述催化剂置于两个连续的反应区A,B中,反应区B维持在高于反应区A的温度下,第一反应段的含丙烯醛的产物气体混合物再在第二反应段中在第二固定床催化剂上以高丙烯醛负载被氧化,所述催化剂置于两个连续的反应区C,D中,反应区D维持在高于反应区C的温度下。

Catalyst.

Molybdenum promoted vanadium-antimony-oxide based catalyst for selective paraffin ammoxidation.