WO2004078344A1 - 粒状多孔性アンモ酸化触媒 - Google Patents
粒状多孔性アンモ酸化触媒 Download PDFInfo
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- WO2004078344A1 WO2004078344A1 PCT/JP2004/002397 JP2004002397W WO2004078344A1 WO 2004078344 A1 WO2004078344 A1 WO 2004078344A1 JP 2004002397 W JP2004002397 W JP 2004002397W WO 2004078344 A1 WO2004078344 A1 WO 2004078344A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
- B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/8876—Arsenic, antimony or bismuth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/34—Mechanical properties
- B01J35/38—Abrasion or attrition resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/24—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/24—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
- C07C253/26—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
- B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/633—Pore volume less than 0.5 ml/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/66—Pore distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the present invention is suitably used in producing acrylonitrile or methacrylonitrile by reacting propylene, isobutene or tertiary butyl alcohol with molecular oxygen and ammonia in a fluidized bed reactor.
- a fluidized bed reactor To a particulate porous ammoxidation catalyst.
- the present invention relates to a granular porous ammoxidation catalyst comprising a metal oxide and a silica carrier supporting the metal oxide, wherein the metal oxide is molybdenum, bismuth, iron, vanadium,
- the catalyst contains at least two elements selected from the group consisting of antimony, tellurium, and niobium, and the catalyst has an amount of catalyst particles having a particle diameter of 5 to 200 zm of 90 to 90% by weight of the catalyst.
- the catalyst has a particle size distribution of 100% by weight, and the catalyst has a cumulative volume of pores having a pore diameter of 80 A or less with respect to the total pore volume of the catalyst being 20% or less; And a pore distribution in which the cumulative volume of pores having a pore diameter of 100 A or more is 20% or less of the total pore volume of the catalyst. It relates to an ammoxidation catalyst.
- the present invention also relates to an efficient method for producing the catalyst.
- the catalyst of the present invention has a high yield of the target product and has a high abrasion resistance suitable for industrial use. Performing ammoxidation of propylene, isobutene or tertiary butanol in a bed reactor enables stable production of acrylonitrile or methacrylonitrile in high yield. It is industrially advantageous.
- Conventional technology Conventional technology
- Acrylonitrile or methacrylonitrile is obtained by the so-called ammoxidation reaction, which is the reaction of propylene, isobutene or tertiary butanol with molecular oxygen and ammonia.
- ammoxidation reaction is the reaction of propylene, isobutene or tertiary butanol with molecular oxygen and ammonia.
- the production method is well known, and many catalysts used for this ammoxidation reaction have been proposed.
- an oxide catalyst system containing molybdenum, bismuth and iron as shown in Japanese Patent Publication No. 38-17967 and Japanese Patent Publication No. 38-1976 Improvements are being made from various viewpoints to oxide catalyst systems containing antimony and iron as disclosed in JP-A-11-111.
- Japanese Patent Publication No. 57-566373 discloses a catalyst containing molybdenum, bismuth, iron, copartite and zirconium as essential components.
- Japanese Patent Publication No. 57-147-47 discloses that molybdenum, bismuth and Disclosed are catalysts for ammoxidation of propylene in which the content of silica carrier, average pore diameter, total pore volume, and specific surface area are specified in specific ranges for catalysts containing thymon as an essential component, respectively. .
- No. 98337 discloses a catalyst for oxidizing an orifice having an average pore diameter of 2000 A or more for use in a fixed-bed reactor.
- Japanese Unexamined Patent Publication No. Sho 58-111131 discloses a method for producing methacrolein. 3% or less of the surface area
- WO03 / 0399744 describes in detail the physical structure, including the pore distribution, of an industrial catalyst for producing propylene and acrylic acid by oxidizing propylene. A defined metal oxide catalyst is disclosed.
- claim 1 states "a catalyst for use in a fixed-bed reactor.” Also, the average pore radius of the catalyst is more than 200 A It is considered to be low in strength due to its large pore diameter, and it is considered to be poor in fluidity because it is an extruded catalyst (in the example, a cylindrical molded product having a diameter of 4 mm and a length of 4 to 8 mm). Thus, it is clear that this catalyst cannot be used in fluidized bed reactors.
- Japanese Patent Application Laid-Open No. 58-111131-41 described above relates to a method for producing methacrolein, and does not specify the reaction type.
- USP 3,397,153 and Japanese Patent Publication No. 274,264 Is a method for producing a sintered low-density catalyst using a silica raw material consisting of two types of silica sols having different average particle diameters.
- the former improves economic efficiency by reducing density.
- the purpose of the latter is to improve the strength of the antimony-containing oxide catalyst to lower the density, and to determine the relationship between the pore distribution of the catalyst and the yield of the desired product. No suggestion is made, nor is there any suggestion regarding an oxide catalyst having an improved yield of the desired product.
- one object of the present invention is to use propylene, isobutene or tertiary butanol in the production of acrylonitrile or methyl chloronitrile by a fluidized-bed ammoxidation reaction. Since it is a catalyst, it has a high yield of the target product, and has high abrasion resistance suitable for industrial use, so it has a granular porosity that enables stable production of the target product in a high yield.
- An object of the present invention is to provide an ammoxidation catalyst.
- Another object of the present invention is to provide a method for producing the above catalyst.
- Still another object of the present invention is to provide a method for producing acrylonitrile or methacrylonitrile using the above catalyst.
- propylene, isobutene or tertiary butanol is combined with molecular oxygen and ammonia in a fluidized bed.
- a metal oxide and a silica carrier supporting the metal oxide wherein the amount of the silica carrier is 20 to 80% by weight based on the total weight of the metal oxide and the silica carrier.
- the metal oxide comprises at least two elements selected from the group consisting of molybdenum, bismuth, iron, vanadium, antimony, tellurium, and niobium; Having a particle size distribution in which the amount of catalyst particles of up to 200 m is 90 to 100% by weight based on the weight of the catalyst;
- the cumulative volume of pores having a pore diameter of $ 0 A or less is 20% or less based on the total pore volume of the catalyst, and the pores have a pore diameter of 100 A or more. Having a pore distribution such that the integrated volume of the catalyst is 20% or less of the total pore volume of the catalyst,
- a granular porous ammoxidation catalyst characterized by this is provided. According to another aspect of the present invention, there is provided a method for producing the catalyst,
- the silicon raw material has an average primary silica particle diameter of 20 to At least one kind of silica sol (i) having a diameter of 100 nm is 40 to 100% by weight based on silica power, and the average particle diameter of the silica primary particles is 5 nm to less than 20 nm.
- At least one silica sol (ii) is composed of 60 to 0% by weight based on silica, and the at least one silica sol (i) and the at least one silica sol (ii) Is 100% by weight on a silica basis,
- a method for producing a catalyst characterized by including the above is provided.
- acrylonitrile comprising reacting propylene, isobutene or tertiary butanol with molecular oxygen and ammonia in a fluidized bed reactor using the above catalyst. Or a method for producing methacrylonitrile is provided.
- a metal oxide and a silicon carrier supporting the metal oxide wherein the amount of the silicon carrier is 20 to 80% by weight based on the total weight of the metal oxide and the silica carrier;
- the oxide contains at least two elements selected from the group consisting of: molybdenum, bismuth, iron, palladium, antimony, tellurium and niobium; and the catalyst has a particle diameter of 5 to 20 particles. Having a particle size distribution in which the amount of 0 ⁇ m catalyst particles is 90 to 100% by weight based on the weight of the catalyst;
- the integrated volume of pores having a pore diameter of 800 A or less is 20% or less based on the total pore volume of the catalyst, and the pores have a pore diameter of 100 A or more. Having a pore distribution such that the integrated volume of the catalyst is 20% or less of the total pore volume of the catalyst,
- C represents at least one element selected from the group consisting of nickel, corn, manganese, zinc, magnesium, calcium, strontium and barium
- D represents , Krom, Evening Sten, Vanadium, Niobium, Represents at least one element selected from the group consisting of boron, aluminum, gallium, indium, phosphorus, antimony and tellurium;
- E represents at least one element selected from the group consisting of rare earth elements
- F represents at least one element selected from the group consisting of ruthenium, rhodium, octaradium, osmium, iridium, and platinum;
- G represents at least one element selected from the group consisting of sodium, potassium, rubidium and cesium;
- a, b, c, d, e, f, g, and n are, respectively, bismuth (B i), iron (F e), C, D, E, F, G and oxygen ( ⁇ ) molybdenum (M o) Represents the atomic ratio to 12 atoms,
- a 0.05 to 7
- c 0 to 1 2
- cl is 0-5
- f 0-0.2
- g 0.01 to 5
- n is an oxygen source that satisfies the valence of the constituent elements other than oxygen 04 002397
- the silica raw material used for the production of the silica carrier is based on at least one silica sol (i) having an average primary silica particle diameter of 20 to 100 nm. At least one kind of silica sol (ii) having an average particle diameter of 40 to 100% by weight and primary silica particles of 5 nm to less than 20 nm is 60 to 0% by weight based on silica. 3. The method according to item 1 or 2, wherein the total of said at least one kind of silica sol (i) and said at least one kind of silica sol (ii) is 100% by weight based on the respective silicic powers. Granular porous ammoxidation catalyst.
- An aqueous raw material mixture containing at least two compounds selected from the group consisting of a molybdenum compound, a bismuth compound, an iron compound, a vanadium compound, an antimony compound, a tellurium compound, and a niob compound, and a silica raw material;
- the silica raw material contains at least one kind of silica sol (i) having an average particle diameter of the silica primary particles of 20 to 100 nm in an amount of 40 to 100% by weight based on silica power.
- the silica primary particles have an average particle diameter of 5 nm to less than 20 nm, and at least one silica sol (ii) is 60 to 0% by weight on a silica basis, and the at least 1
- the sum of the respective silica sol (i) and the at least one silica sol (ii) based on the respective silica force is 100% by weight, and the corrected paper (Rule 91) 04 002397
- the sintering consists of pre-sintering and main sintering, the pre-sintering is performed in a temperature range of 150 to 43 ° C, and the main sintering is performed in a range of 450 to 75
- An reaction comprising reacting propylene, isobutene or tertiary butanol with molecular oxygen and ammonia in a fluidized-bed reactor using any of the above-mentioned catalysts.
- the catalyst of the present invention includes a metal oxide and a silica carrier supporting the metal oxide, and the amount of the silica carrier is 20 to 8 with respect to the total S amount of the metal oxide and the silica carrier.
- 0% by weight and the metal oxide Contains at least two elements selected from the group consisting of molybdenum, bismuth, iron, vanadium, antimony, tellurium, and niob,
- the catalyst has a particle size distribution in which the amount of catalyst particles having a particle diameter of 5 to 200 m is 90 to 100% by weight based on the weight of the catalyst, and
- the integrated volume of pores having a pore diameter of 800 A or less is 20% or less based on the total pore volume of the catalyst, and the pores have a pore diameter of 100 A or more. Having a pore distribution in which the integrated volume of the catalyst is '20% or less with respect to the total pore volume of the catalyst,
- the metal oxide supported on a silica carrier is a granular porous ammoxidation catalyst represented by the following formula (1).
- C represents at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, and barium; and D represents chromium.
- E is at least one selected from the group consisting of rare earth elements Represents one element
- F represents at least one element selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, and platinum;
- G represents at least one element selected from the group consisting of sodium, potassium, rubidium and cesium;
- a, b, c, cl, e, f, g, and ⁇ are, respectively, bismuth (B i), iron (F e), C, D, E, F, G, and oxygen (O) molybdenum (M o) Represents the atomic ratio to 12 atoms,
- a 0.05 to 7
- c 0 to 1 2
- f 0-0.2
- g 0.01 to 5
- n is the number of oxygen atoms that satisfy the valence of the constituent elements other than oxygen.
- C preferably represents at least one element selected from the group consisting of Ni, C0, Zn, Mn and Mg; E preferably represents at least one element selected from the group consisting of La, Ce, Pr and Nd;
- G preferably represents at least one element selected from the group consisting of K, Rb and Cs;
- a is preferably 0.1 to 3,.
- b is preferably 0.:!-3
- c is preferably from 5 to 10;
- e is preferably 0.05 to 2
- g is preferably 0.05 to: L.0.
- the metal oxide of the catalyst of the present invention is represented by the above formula (1), it is more preferable that the metal oxide is represented by the following formula (2) or (3).
- Mo, Bi, Ce, Fe and Ni represent molybdenum, bismuth, cerium, iron and nickel, respectively;
- Q represents at least one element selected from the group consisting of magnesium and zinc
- R represents at least one element selected from the group consisting of power beams, rubidium and cesium;
- k, 1, m, q, r and n are the sum of bismuth (B i) and cerium (C e), iron (F e), nickel (N i), Q, R and oxygen ( ⁇ ) Molybdenum (Mo) 1 2 Represents the atomic ratio to the atom,
- Mo molybdenum
- Bi bismuth
- Fe iron
- Ni nickel
- T represents at least one element selected from the group consisting of chromium and indium
- R represents at least one element selected from the group consisting of calcium, rubidium and cesium;
- X represents at least one element selected from the group consisting of manganese, magnesium, zinc, cerium, sodium, and phosphorus;
- h, p, s, t, r, x and n are each bismuth (B i), the atomic ratio of iron (Fe), nickel (Ni), T, R, X and oxygen ( ⁇ ) to 12 molybdenum atoms,
- n is the number of oxygen atoms that satisfy the valence of the constituent elements other than oxygen.
- the catalyst of the present invention has a particle size distribution in which the amount of catalyst particles having a particle diameter of 5 to 200 m is 90 to 100% by weight based on the weight of the catalyst.
- the amount of catalyst particles having a particle diameter of 5 to 200 m is less than 90% by weight based on the weight of the catalyst, particles having a particle diameter smaller than 5 Xm or a particle diameter of 200 m are reduced. If the amount of particles to be exceeded becomes too large, the fluidity of the catalyst is impaired, and consequently the reaction performance is impaired.
- the calculated volume of pores having a pore diameter of 80 A or less is 20% or less based on the total pore volume of the catalyst, and the pore diameter is 1% or less.
- the pore distribution is such that the pore volume of the pores of not less than 100 A is 20% or less with respect to the total pore volume of the catalyst.
- the cumulative volume of the pores having a pore diameter of 80 A or less is 15% or less with respect to the total pore volume of the catalyst, and is 10% or less. Is even more preferred. Further, it is more preferable that the cumulative volume of pores having a pore diameter of 100 A or more is 15% or less with respect to the total pore volume of the catalyst. Something is even better.
- the target product (acrylonitrile or methacrylonitrile) is obtained. (Trill) A decrease in yield is observed.
- the cumulative volume of pores having a pore diameter of 100 A or more exceeds 20% of the total pore volume of the catalyst, the abrasion resistance of the catalyst is reduced, and the catalyst has an industrial fluidized bed catalyst. The abrasion resistance suitable for use as a product cannot be obtained, and stable production of the target product cannot be performed.
- the value of the pore distribution in the present invention is determined by the mercury intrusion method (Shimadzu, Japan) It was obtained from the company's Autopore 920).
- the mercury intrusion method is a method in which mercury is injected into catalyst particles and the distribution of pore sizes is measured from the relationship between the pressure at that time and the amount of infiltration.This is primary data. Assuming that the shape of the pores is cylindrical, an integrated curve of the pore volume with respect to the calculated pore diameter is given.
- the curve obtained by first-order differentiation of the pore volume cumulative curve with respect to the pore diameter is plotted with respect to the corresponding pore diameter, and is usually called a pore distribution.
- a pore distribution For details, put 0.3 to 0.4 g of the sample (catalyst) into a dilatometer (dilatometer), degas to 6.67 Pa or less with a vacuum pump, and inject mercury.
- a daytime meter was loaded into the autoclave, and the pressure was gradually increased from normal pressure to 413 MPa to track the decrease in the mercury level.
- the pore distribution is measured from the amount of mercury injected into the catalyst pores).
- the gap between the catalyst particles is measured as pores of tens of thousands to hundreds of thousands of persons.
- the integrated volume of pores of 0.000 A or less was defined as the total pore volume.
- the calculated volume of the pores having a pore diameter of 8 OA or less is the lower limit of the measurement of the pore diameter (about 30 A). It is measured as the cumulative volume of pores from 1000 A to 800 A, and the cumulative volume of pores with a pore diameter of 100 A or more is from 100 OA to 500 OA. 004/002397
- the total volume of pores is measured as the total volume of pores from 20 to 500 A from the lower limit of measurement of pore diameter.
- Means for controlling the pore distribution include changing the particle diameter of silica sol (average particle diameter of silica primary particles), which is a raw material of silica, and using silica carrier and metal oxide in the catalyst.
- the sintering temperature can be changed, the sintering temperature can be changed, fumed silica can be used as a part of the silica material, and the catalyst material aqueous slurry (aqueous material mixture) described later can be used in the air sintering temperature. It can be achieved by mixing fine substances that burn and decompose in the following, spray-drying and firing.
- the pore distribution shifts to the larger pore diameter side when the metal oxide ratio is increased. Also, when controlling the pore distribution by changing the firing temperature, increasing the firing temperature shifts the pore distribution to the larger pore diameter side. Furthermore, when controlling the pore distribution by mixing fine substances that burn and decompose at a temperature lower than the calcination temperature in air into the aqueous slurry of the catalyst raw material (aqueous raw material mixture), Since the space created by burning and decomposing such substances becomes pores, the size of the fine substance to be mixed is 100 to 100,000, preferably 200 to 500,000 A, For this reason, it is preferable to use an organic substance having no residual components after combustion. (Such fine substances include, for example, crystalline cellulose sol with good water dispersibility, 7
- the catalyst has a high abrasion resistance suitable for industrial use.
- abrasion resistance of the catalyst "Test Met-hodfor Synthetic Fluid Craeking Catatlyst” (American C yanami cl Co. L td. 6/3 1-4 m-1/57 7)
- ACC method the measurement was carried out as wear loss. This wear loss is defined as follows.
- A is the weight S (g) of the catalyst that has worn away during 0 to 5 hours
- B is the weight (g) of the catalyst that has usually worn away during 5 to 20 hours. This is defined as the weight (g) of the catalyst which has been worn away in 5 to 120 hours.
- C is the weight (g) of the catalyst subjected to the test.
- silica is used as a carrier.
- Silica is more inert than other carriers, and has a good binding action on metal oxides without reducing selectivity for the target product.
- the metal oxide can provide high abrasion resistance to the supported metal oxide, and thus is suitable as a carrier in the catalyst of the present invention.
- the amount of the silica carrier is from 20 to 80% by weight, preferably from 30 to 70% by weight, and more preferably from 40 to 6% by weight, based on the total weight of the silica carrier and the metal oxide. The range is 0% by weight.
- Oxide sols such as titania, zirconia, and tin can also be mixed with silica and used, but in this case, the amount of oxide sol other than these silica sols is based on oxides. The amount is preferably 10% or less of the weight of the carrier, and more preferably 5% or less.
- Aluminum is one of the impurities in the silica sol used.
- the amount of aluminum as an impurity in the silica sol is preferably less than 0.0 atoms of aluminum per 100 atoms of silicon, and more preferably less than 10 atoms of silicon.
- the amount of aluminum is 0,02 atoms or less per 0 atom.
- the amount of aluminum in silicon dioxide may be 0, and the value of aluminum should be set to a value smaller than the value of 0.02 atoms of aluminum per silicon atom. However, it does not contribute to further performance improvement of the catalyst.
- silica sols methods for producing extremely high-purity products for use as abrasives for semiconductor surfaces, raw materials for quartz fibers, and raw materials for catalyst carriers have been announced.
- ICP inductively cou led lasma
- the silica raw material used for producing the silica carrier is preferably a silica primary particle.
- the average particle diameter of at least one silica sol (i) having an average particle diameter of 20 to 100 nm is 40 to 100% by weight based on silica, and the average particle diameter of the silica primary particles is 5 nm to 5 nm.
- At least one silica sol (ii) having a size of less than 20 nm is composed of 60 to 0% by weight on a silica basis, and the at least one silica sol (i) and the at least one silica sol (i) are included.
- the sum of the species of silica sol (ii) based on the respective silica is 100% by weight.
- IS of the silica sol (i) is the same as that of the silica sol (i).
- Each of the silicide groups in the sily sol (ii) Revised form (Rule 91) It is preferably from 80 to 100% by weight, based on silica, based on the total weight.
- the amount of the silica sol (i) is It is preferable that the content of (i) and the silica sol (ii) is 60% by weight or more and less than 80% by weight on a silica basis with respect to the total on a silica basis.
- the amount of the silica sol (i) is determined by the amount of the silica sol (i) and the amount of the silica sol (i).
- the total amount of the silica sol (ii) based on the respective silica power is 40% by weight or more and less than 60% by weight based on the silica.
- Said silica sol (ii) (at least one type of silica sol in which the average particle diameter of the silica primary particles is 5 nm to less than 20 nm) is the average particle size of the silica primary particles. More preferably, the diameter of the particles is between 7 and 15 nm.
- the average primary silica particle diameter is 5% as a part of the silica raw material. It is preferred to use a fumed silicon force of up to 30 nm in an amount of 10 to 50% by weight based on the weight of the silica carrier.
- the average diameter of the primary particles of fumed silica is more preferably from 10 to 20 nm. More preferably, the amount of fumed silica is from 20 to 40% by weight based on the weight of the silica carrier.
- the average diameter of the silica primary particles of silica sol and fumed silica used as a carrier material can be determined by a known method such as BET method and electron microscopy. Recorrected form (Rule 91)
- the average diameter of the primary particles is determined by the BET method, that is, the BET adsorption isotherm (Brunauer-Emmett-Te 1 ler adsorption isotherm). This is the average diameter of the silica primary particles.
- water which is the dispersion medium of the sol, is evaporated at a temperature of 100 to 200 ° C. to form a powder, and then nitrogen is saturated and adsorbed at a liquid nitrogen temperature.
- the specific surface area S (m 2 / g) of the powder is calculated from the amount of nitrogen released when the temperature is returned to room temperature. Then, assuming that the primary particles of silica are all spherical with the same diameter D (nm), the specific gravity (P) of the silica particles (amorphous silica) in the silica sol is 2.2, and the silica per 1 g Assuming that the number of primary particles is n, the diameter D (nm) can be obtained by the following equation.
- silica sol In order to control the pore distribution in order to achieve the physical structure requirements of the catalyst of the present invention, it is most effective to change the silica primary particle diameter of the silica raw material, silica sol. In general, increasing the silica primary particle diameter of the silica sol tends to decrease the strength of the resulting catalyst. On the other hand, it is desirable that industrial fluidized bed catalysts have high strength. Therefore, in the past, silica sols with an average primary particle diameter of more than 10 m were generally used as raw materials for silicon. And, like this When the catalyst is used, the integrated volume of the pores having a pore diameter of 80 A or less in the obtained catalyst exceeds 20% of the total pore volume of the catalyst, so that the physical structure requirement of the catalyst of the present invention is not satisfied.
- the average particle diameter of the silica primary particles is relatively small, the accumulated volume of the pores having a pore diameter of 80 A or less of the catalyst is reduced to the total pore volume of the catalyst.
- the average particle diameter of the silica primary particles is relatively large, the cumulative volume of pores having a pore diameter of 100 A or more of the catalyst becomes larger than the total pore diameter of the catalyst. Since it is more than 20% with respect to the volume, it is not easy to satisfy the physical structure requirements of the catalyst of the present invention. Therefore, it is substantially impossible to obtain a catalyst that satisfies the physical structural requirements of the catalyst of the present invention by the method for producing a catalyst described in the prior art. Next, the method for producing the catalyst of the present invention will be described in detail.
- the catalyst of the present invention can be efficiently produced, for example, by the following production method. That is:
- an aqueous raw material mixture containing at least two compounds selected from the group consisting of a molybdenum compound, a bismuth compound, an iron compound, a vanadium compound, an antimony compound, a tellurium compound, and a niob compound, and a silicon raw material.
- the silica raw material is a sheet on which at least one kind of silica sol (i) having an average particle diameter of the silica primary particles of 20 to 100 nm is HE-coated (Rule 91). At least one kind of silica (ii) having an average particle diameter of 40 to 100% by weight and primary silica particles of 5 to less than 20 nm on a force basis. 60 to 0 weight by weight; 3 ⁇ 4, each of the at least one kind of silica sol (i) and the at least one kind of silica sol (ii) Is 100% by weight, and
- the method for producing the catalyst of the present invention comprises a first step of providing an aqueous raw material 'mixture (raw material preparation step), and a second step of spray-drying the aqueous raw material mixture to obtain a dried catalyst precursor (drying step). And a third step (calcination step) of calcining the dried catalyst precursor.
- a catalyst raw material aqueous slurry (aqueous raw material mixture) is obtained from the catalyst raw material.
- a catalyst raw material aqueous slurry (aqueous raw material mixture) is obtained from the catalyst raw material.
- the element source of each element such as calcium, rubidium, and cesium include ammonium salts, nitrates, hydrochlorides, sulfates, organic acid salts, and inorganic acids that are soluble in water or nitric acid.
- ammonium salt is an elemental source for the elements molybdenum, tungsten, and vanadium, and bismuth, iron, nickel, cono- num, manganese, zinc, magnesium, caliresium, strontium, and noridium.
- Chromium, aluminum, gallium, indium, rare earth elements, sodium, potassium, relevidium, and cesium as the elemental sources of the respective nitrates are niobium, niobium, Inorganic acids are preferred as sources of boron, phosphorus and tellurium.
- antimony oxide can be suitably used.
- catalyst raw materials for those that are hardly soluble in water such as elemental sources of antimony and niobium, use water-soluble chelating agents such as citric acid, oxalic acid, tartaric acid, and hydrogen peroxide. It is preferable to use it after dissolving it.
- water-soluble chelating agents such as citric acid, oxalic acid, tartaric acid, and hydrogen peroxide. It is preferable to use it after dissolving it.
- niobic acid and dicarboxylic acid for example, oxalate
- Acid mixture and ammonia, and is used as a diobic acid-containing aqueous mixture in which the molar ratio of noniob dicarboxylic acid is 1 to 4 and the molar ratio of ammonia / niobium is 2 or less. I prefer to be there.
- diantimony trioxide is hardly soluble in water
- ammonium metavanadate or ammonium metavanadate and ammonium paramolybdate are added to water together with diantimony trioxide to obtain an aqueous mixture. It can be dissolved by heating to above 0 ° C and below the boiling point (the boiling point is usually about 100 ° C).
- the silica raw material used in the production of the catalyst of the present invention comprises at least one silica sol (i) having an average particle diameter of the silica primary particles of 20 to 100 nm on a silica basis. 40 to 100% by weight and the average particle diameter of the silica primary particles is from 5 nm to less than 20 nm.
- At least one kind of silica sol (ii) is 60 to 100% by weight based on silica. 0% by weight, and the total of the at least one kind of silicasol (i) and the at least one kind of silicasol (ii) is 100% by weight based on each silica. It is.
- the aqueous slurry of the catalyst raw material is prepared by adding an ammonium salt such as molybdenum and evening stainless steel dissolved in water to a silica raw material sol, a silica raw material sol.
- an ammonium salt such as molybdenum and evening stainless steel dissolved in water
- a silica raw material sol a silica raw material sol.
- a solution obtained by dissolving a nitrate of an element source of each element such as sodium, potassium, rubidium and cesium in water or an aqueous nitric acid solution.
- the above element sources that are hardly soluble in water can be appropriately added by performing the solubilization treatment as described above.
- the aqueous raw material mixture obtained in the first step is spray-dried to obtain spherical dry particles (dry catalyst precursor).
- Spraying of the aqueous raw material mixture can be performed by a method such as a centrifugal method, a two-fluid nozzle method, and a high-pressure nozzle method which are generally used in industry, but it is particularly preferable to perform the spraying by a centrifugal method.
- a heat source for drying it is preferable to use air heated by steam, an electric heater, or the like.
- the temperature at the dryer inlet is between 100 and 400 ° C, preferably between 150 and 300 ° C.
- the temperature at the outlet of the dryer is between 100 ° C and 100 ° C, preferably between 120 ° C and 150 ° C.
- Step 3 (firing step)
- a desired catalyst is obtained by calcining the dried particles (dry catalyst precursor) obtained in the second step.
- the calcination of the dried catalyst precursor may be carried out, if desired, first in an atmosphere containing oxygen (for example, in an air atmosphere) at 150 to 43 ° C for 3 minutes to 10 hours.
- Pre-stage baking (optional) is performed, and thereafter, under an atmosphere containing oxygen (for example, under an air atmosphere), 450-750.
- the main firing is performed at a temperature of C, preferably 500 to 700 ° C. for 1 to 20 hours. This pre-stage firing is performed in order to burn the ammonium nitrate derived from the raw material that is an ammonium salt and the raw material that is a nitrate.
- the sintering can be performed using a sintering furnace such as a rotary furnace, a tunnel furnace, and a matsufur furnace.
- the particle size distribution of the catalyst after the completion of calcination is measured as follows.
- the particle size distribution refers to the weight percentage of catalyst particles having a certain range of particle diameter with respect to all catalyst particles.
- the particle size distribution in the present invention is measured as follows. Place a 200 m sieve (manufactured by Bakk Beemyers, USA) on a 5 m sieve (Knok Beamers, USA) and attach a receiver at the bottom. By introducing the catalyst sample into the upper stage and vibrating, the catalyst remaining on the sieve with a mesh size of 5 m was obtained, and the amount was divided by the amount of the introduced catalyst and multiplied by 100 to obtain a value (%). obtain. In the catalyst of the present invention, this value is 90 to 100 (% ').
- the excellent catalyst of the present invention can be obtained by such a simple method.
- propylene, isobutene or tertiary butanol is converted into molecular oxygen and By reacting with ammonia, acrylonitrile or methacrylonitrile can be produced.
- the reaction is performed in a fluidized bed reactor.
- the raw materials propylene, isobutene, tertiary butanol, and ammonia do not necessarily need to be of high purity, and industrial grade ones can be used.
- the molecular oxygen source it is usually preferable to use air, but it is also possible to use a gas having an increased oxygen concentration by mixing oxygen with air.
- the molar ratio of ammonia to molecular oxygen relative to propylene, isobutene or tertiary butanol as the composition of the raw material gas is (propylene, isobutene or tertiary butanol) / ammonia.
- Z molecular oxygen 1 Z 0.8 to 1.4 / 1.4 to 2.4, preferably 1 / 0.9 to: 1.3 / 1.6 to 2.2.
- the reaction temperature is in the range of 350 to 550 ° C, preferably in the range of 400 to 500 ° C.
- the reaction pressure can be set within a range from normal pressure to 0.3 MPa.
- the contact time between the raw material gas and the catalyst is 0.5 to 20 (sec ⁇ g Zcc), preferably 1 to 10 (sec * g / cc).
- the contact time is defined by the following equation.
- W is the amount of catalyst (g),
- F is the raw material mixed gas flow rate (N at standard temperature (0 ° C, 1 atm)) ccsec)
- T is the reaction temperature ( D C)
- the particle size distribution of the catalysts prepared in all Examples and Comparative Examples was measured using a sieve. Specifically, a 200 m sieve (made by Nok Beamers, USA) is placed on a 5 m sieve (made by Knock Beamers, USA), and By installing a receiver at the bottom, introducing the catalyst sample at the top, and vibrating, the catalyst remaining on the sieve with an aperture of 5 m was obtained, and the amount was divided by the amount of catalyst introduced. The value returned and multiplied by 100 was taken as the particle size distribution of the sample. As a result, for all the catalysts, the amount of catalyst particles having a particle diameter of 5 to 200 m was 100% by weight based on the weight of the catalyst.
- the conversion and acrylonitrile yield used to express the reaction results are defined by the following equations.
- Conversion (%) (moles of propylene reacted) Z (moles of propylene supplied) X 100
- Acrylonitrile yield (%) (acrylic acid produced) (Moles of propylene) Z (moles of propylene supplied) X 1 ⁇ 0
- the reactor used was a bed glass tube with a 25 mm inner diameter made of a glass glass, the reaction pressure P was 0.15 Mpa, the amount of packed catalyst W was 40 to 60 g, and the raw material mixed gas was used.
- the flow rate F was from 250 to 450 Ncc / sec (standard condition (0 ° (converted to 1 atm)), and the reaction temperature T was 4300 ° C.
- the contact time is defined by the following equation.
- W is the amount of catalyst (g),
- F is the raw material mixed gas flow rate (Nc csec) at standard conditions (0 ° C, 1 atm), 'T is the reaction temperature C), and
- P represents the reaction pressure (Mpa).
- the composition of the raw material mixed gas was as follows.
- Wear loss (%) B / (C-A) XI 0 0
- A is the weight (g) of the catalyst that has worn away in 0 to 5 hours
- B is the weight (g) of the catalyst that has worn away in 5 to 120 hours
- C is used for the test. It is the weight of the catalyst (g).
- Example 1 When the value of the wear loss of the catalyst is 7% or less, it can be determined that the catalyst has high wear resistance suitable for industrial use.
- Example 1 When the value of the wear loss of the catalyst is 7% or less, it can be determined that the catalyst has high wear resistance suitable for industrial use.
- the metal oxide represented by 5 to 5 0 wt% of silica mosquito carrier supported catalyst was manufactured by adjusting to the earthenware pots like the following.
- nitric acid For 45.3 g of nitric acid at a concentration of 16.6% by weight, add 42.2 g of bismuth nitrate [: Bi (NO 3 ) 3-5 H 2 ⁇ ] and 75.5 g of nitric acid nitrate. Li um [C e (Nyu_ ⁇ 3) 3 ⁇ 6 ⁇ 2 ⁇ ], 1 4 0. 5 g iron nitrate [F e (NO 3) 3 ⁇ 9 H 2 ⁇ ], 1 1 2.
- Nickel nitrate (N i (approximately 0 3 ) 2 ⁇ 6 2 ⁇ ), 168.8 g cobalt nitrate (C 0 (N 03) 2 ⁇ 6 H 2 ⁇ ), 99.1 g magnesium sulfate acid [M g (N 03) 2 ⁇ 6 H 2 O ], 1.7 6 g of nitrate Ca Li um CKN 0 3 of) and 1 ⁇ 4 3 g of nitric acid rubidium ⁇ beam [R b NO 3]
- the solution obtained by the dissolution is added to 166.6.6 g of an aqueous silica sol containing 30% of the Si 2 that has 30% of the primary particles and an average particle diameter of 22 nm of silica.
- the cumulative volume of pores having a pore diameter of 80 A or less was 0.05 cc / g, and the pores having a pore diameter of 100 A or more were obtained.
- the cumulative volume of the pores was 2.2%, and the cumulative volume of pores having a pore diameter of 1000 A or more was 5.2%.
- the ammoxidation reaction of propylene was performed at a contact time of 4.3 (sec ⁇ g Z cc), and the conversion after 24 hours from the start of the reaction was 99.0. %, And the acrylonitrile yield was 84.0%.
- Aqueous silica sol only 1 6 6 6 as a silica Kazoru containing S i 0 2 3 0 wt% of an average particle diameter of 1 2 nm of primary silica particles are silica raw material. 7 g be used, and the present A catalyst was prepared in the same manner as in Example 1 except that the firing temperature was 590 ° C.
- the cumulative volume of pores with a pore diameter of 80 A or less was 0.058 cc / g, and the pores with a pore diameter of 100 A or more
- the pore volume is 0.001 cc / g, and the total pore volume is 0.220 cc / g.
- the cumulative volume of the pores was 26.4%, and the cumulative volume of pores having a pore diameter of 1000 A or more was 0.5%.
- the ammoxidation reaction of propylene was carried out for a contact time of 3.7 (sec ⁇ g Zcc), and the conversion after 24 hours from the start of the reaction was 99.1. %, And the yield of acrylonitrile was 82.4%.
- the average particle diameter of 8 6 nm of 3 0 wt% of 3 i ⁇ silica Kazoru corrected sheet containing 2 of the silica Kazoru by silica mosquito primary particles are silica force material (Rule 91)
- a catalyst was prepared in the same manner as in Example 1, except that 16.66.7 g of the above-mentioned compound was used, and that the main calcination temperature was 550 ° C.
- the cumulative volume of pores having a pore diameter of 80 A or less was 0.0000 cc / g, and the pores having a pore diameter of 1
- the pore volume is 0.271 cc / g and the total pore volume is 0.354 cc / g. Therefore, the pores with a pore diameter of 80 A or less with respect to the total pore volume was 0.0%, and the cumulative volume of pores having a pore diameter of 100 OA or more was 76.6%.
- the ammoxidation reaction of propylene was performed for a contact time of 3.9 (sec ⁇ g Zcc). 1%, and the yield of acrylonitrile was 84.5%.
- the metal oxide represented by 5 5 0 fold Y% of shea catalyst supported on Li mosquitoes were prepared earthenware pots like the following. ' Shi Li Ca primary particles having an average particle diameter of 8 6 nm 3 0 wt% of S i ⁇ 2 aqueous Shi Li force sol 8 containing 3 3. 3 average particle diameter of g and shea Li Ca primary particle element is 1 2 nm of 3 0 wt% of i 0 2 aqueous Shi Li force sol 8 containing 3 3. 3 g were mixed to obtain a sheet re mosquitoes feed.
- the spraying of the aqueous raw material mixture was performed using a spraying device provided with a dish-shaped rotator installed in the upper center of the dryer.
- the obtained powder (dry catalyst precursor) is fired in an electric furnace at 350 ° C. for 1 hour at 350 ° C, and then calcined at 590 ° C. for 2 hours under air to obtain the catalyst. Obtained.
- the cumulative volume of pores having a pore diameter of 80 A or less was 0.014 cc / g, and the pore diameter was 1
- the cumulative volume of the pores having a pore size of 0.000 A or more is 0.004 cc / g, and the total pore volume is 0.225 cc Zg.
- the cumulative volume of pores with a diameter of 800 A or less was 6.2%, and the cumulative volume of pores with a pore diameter of 100 A or more was 1.8%.
- the ammoxidation reaction of propylene was performed at a contact time of 4.6 (sec ⁇ g / cc), and the conversion after 24 hours from the start of the reaction was 9%.
- the acrylonitrile yield was 9.2%, and the yield was 84.2%.
- Shi aqueous Shi Li Ca sol 1 2 5 0 containing S i ⁇ 2 average particle diameter of 3 0 wt% of 8 6 nm of Li Ca primary particles.
- 0 g and an average diameter of primary particles is 1 2 nm 3 0 wt% of S i ⁇ 2 Li Ka zone le 4 1 6 including. 7 by mixing the g is possible to get a sheet re power feed (i.e., mixed 'if the sheet re force sol of 2 transliteration
- the catalyst was prepared in the same manner as in Example 2 except that the ratio was changed as shown in Table 1), and that the main calcination temperature was 570 ° C.
- the pore diameter was 80
- the cumulative volume of pores below A is 0.002 cc Zg
- the pore volume of pores with a diameter of 100 A or more is 0.152 cc Zg
- the total pore volume is 0 Therefore, the cumulative volume of pores with a pore diameter of 80 A or less is 0.7% and the fine volume of pores with a pore diameter of 100 A or more is 0.08 A / g.
- the cumulative volume of the holes was 52, 6%.
- M o ⁇ 2 B i 0 is the metal composition.
- a catalyst in which the metal oxide represented by No. 4 was supported on 50% by weight of silica was prepared as follows.
- Shi Li Ca primary particles having an average particle diameter of 5 8 nm 3 0 wt% of S i 0 2 aqueous Shi Li Ca sol 8 containing 3 3.
- 3 average particle diameter of g and shea Li Ca primary particle element is water soluble silica Kazoru 1 2 5 0 containing 8 nm of 2 0 iS il% of S i O 2. by mixing 0 g to obtain a silica mosquitoes feed.
- the obtained aqueous raw material mixture was sent to a cocurrent spray dryer, and was dried at an inlet temperature of about 250 ° (:, an outlet temperature of about 140 ° C.
- the powder (dry catalyst precursor) obtained was sprayed in an electric furnace at 350 ° C in an air atmosphere using a spray device equipped with a dish-shaped rotor installed at the top center of the dryer.
- main calcination was performed at 580 ° C. for 2 hours in an air atmosphere to obtain a catalyst.
- the integrated volume of pores with a pore diameter of 80 A or less was 0.022 cc / g, and the pores with a pore diameter of 100 A or more
- the calculated volume is 0.009 cc Zg and the total pore volume is 0.237 cc Zg. Therefore, the pore diameter is 8 OA or less with respect to the total pore volume.
- the pore volume is 9.3%, and the cumulative volume of pores with a pore diameter of 100 OA or more is 3.8%.
- the ammoxidation reaction of propylene was performed at a contact time of 4.1 (sec ⁇ g, cc), and the conversion after 24 hours from the start of the reaction was 99.
- the yield of acrylonitrile was 84.2%.
- silica As a silica raw material, silica, only silica sol containing 20 % by weight of SiO 2 having an average primary particle diameter of 8 nm was 250.0.0. g
- the catalyst was prepared in the same manner as in Example 3 except that the catalyst was used and the main calcination temperature was 610 ° C.
- the pore distribution of the obtained catalyst was measured.
- the cumulative volume of pores with a pore diameter of 80 A or less is 0.0802 cc g
- the pore volume of pores with a pore diameter of 100 A or more is 0.0000 cc Zg
- the pore volume is 0.204 cc / g. Therefore, the total volume of pores with a pore diameter of 8 OA or less is 39.3%, and the pore diameter is The cumulative volume of pores of 1000 A or more was 0.0%.
- the metal composition is M o 12 B i. 3 C e. 3 C r. 2 I n. . 2 Fe! . 2 N i e. 2 M g 2. 5 K Q.
- the metal oxide 35 by weight% of shea catalyst supported on Li Ca represented by 2 was prepared in earthenware pots like the following.
- nitric acid 4 1 7 7 g to 3 7 0 g of nitric acid bismuth.. [; B i (N 03) 3 ⁇ 5 ⁇ 2 ⁇ ], 3 3 lg nitrate cell re um of [ C e (NO 3) a-6 H 2 O], 20.3 g of chromium nitrate [Cr (N 03) 3-9 H 2 03, 18.0 g of indium nitrate [In (N 03) 3 ⁇ 3 H 2 ⁇ ], 1 2 3. 2 g ferric nitrate [F e (NO 3) 3 ⁇ 9 ⁇ 2 ⁇ ], 4 5 8.
- the cumulative volume of pores with a pore diameter of 80 A or less was 0.020 cc Zg, and the cumulative volume of pores with a pore diameter of 100 A or more was 100 A.
- the volume is 0.013 ccg and the total pore volume is 0.210 cc Zg. Therefore, the integrated volume of pores having a pore diameter of 80 A or less is smaller than the total pore volume.
- the cumulative volume of pores having a diameter of 9.5% and a diameter of 1000 A or more was 6.2%.
- the ammoxidation reaction of propylene was performed at a contact time of 4.2 (sec ⁇ / cc), and the conversion after 24 hours from the start of the reaction was 99.1%.
- the acrylonitrile yield was 84.5%.
- a silicon sol which is a raw material for silicon power, containing 166.6.7 g of silica sol containing 30% by weight of SiO 2 having an average particle diameter of primary particles of 1121 m and a particle diameter of 1 211 m; and except the sintering temperature is Dearuko 6 0 0 D C a catalyst was prepared in the same manner as in example 4.
- the cumulative volume of pores with a pore diameter of 80 A or less was 0.06 cc Zg, and the pores with a pore diameter of 100 OA or more were fine.
- the pore volume is 0.001 cc Zg, and the total pore volume is 0.213 ccg.Therefore, the total volume of pores with a pore diameter of 80 A or less relative to the total pore volume
- the integrated volume of pores having a pore diameter of 28.6% or more and a pore diameter of 100 A or more was 0.5%.
- the ammoxidation reaction of propylene was performed for a contact time of 3.9 (sec ⁇ g Zcc).
- the conversion after 24 hours from the start of the reaction was 99.0. %, And the yield of acrylonitrile was 82.5%.
- the abrasion loss (%) was 1.9%.
- Table 1 shows the composition of the catalyst and the manufacturing conditions.
- Table 2 shows the pore distribution, wear resistance (wear loss (%)), and reaction results of the catalyst.
- S i O 2 5 0 fold% of the average particle diameter 2 nm of the average particle diameter of 8 6 nm S i O 2 primary particles of the following particles 5 0 ⁇ %
- Average particle diameter of 5 8 nm of S i 0 2 1 primary particle average particle diameter of 8 nm S i O 2 5 0 % by weight of the following particles: 5 0%
- the catalyst of the present invention Since the catalyst of the present invention has a high yield of the target product and high abrasion resistance suitable for industrial use, the catalyst of the present invention is used in a fluidized-bed reactor in a propylene, isobutene or Performing the ammoxidation reaction of tertiary ethanol can produce acrylonitrile or methacrylonitrile stably in high yield, which is industrially advantageous. .
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Abstract
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| JP2005503018A JPWO2004078344A1 (ja) | 2003-03-05 | 2004-02-27 | 粒状多孔性アンモ酸化触媒 |
| US10/541,393 US7473666B2 (en) | 2003-03-05 | 2004-02-27 | Particulate porous ammoxidation catalyst |
| EP04715450.5A EP1602405B1 (en) | 2003-03-05 | 2004-02-27 | Particulate porous ammoxidation catalyst |
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|---|---|
| US (1) | US7473666B2 (ja) |
| EP (1) | EP1602405B1 (ja) |
| JP (1) | JPWO2004078344A1 (ja) |
| KR (1) | KR100687671B1 (ja) |
| CN (1) | CN100345630C (ja) |
| PT (1) | PT1602405E (ja) |
| TW (1) | TWI264327B (ja) |
| WO (1) | WO2004078344A1 (ja) |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006130196A3 (en) * | 2005-03-02 | 2007-03-22 | Innovene Usa Llc | Composition and method for improving density and hardness of fluid bed catalysts |
| JP2009285581A (ja) * | 2008-05-29 | 2009-12-10 | Asahi Kasei Chemicals Corp | 流動床用アンモ酸化触媒及びそれを用いたアクリロニトリル又はメタクリロニトリルの製造方法 |
| JP2010172851A (ja) * | 2009-01-30 | 2010-08-12 | Asahi Kasei Chemicals Corp | アクリロニトリルの製造用触媒及びアクリロニトリルの製造方法 |
| WO2012144369A1 (ja) | 2011-04-21 | 2012-10-26 | 旭化成ケミカルズ株式会社 | シリカ担持触媒 |
| US9199921B2 (en) | 2011-04-21 | 2015-12-01 | Asahi Kasei Chemicals Corporation | Silica-supported catalyst |
| JP2012245484A (ja) * | 2011-05-30 | 2012-12-13 | Asahi Kasei Chemicals Corp | アンモ酸化用触媒、その製造方法及びアクリロニトリル又はメタクリロニトリルの製造方法 |
| JP2022512947A (ja) * | 2019-09-30 | 2022-02-07 | エルジー・ケム・リミテッド | プロピレンのアンモ酸化用触媒、その製造方法、およびこれを利用したプロピレンのアンモ酸化方法 |
| JP2022512791A (ja) * | 2019-09-30 | 2022-02-07 | エルジー・ケム・リミテッド | プロピレンのアンモ酸化用触媒、その製造方法、それを用いたプロピレンのアンモ酸化方法 |
| JP7161614B2 (ja) | 2019-09-30 | 2022-10-26 | エルジー・ケム・リミテッド | プロピレンのアンモ酸化用触媒、その製造方法、それを用いたプロピレンのアンモ酸化方法 |
| JP7174846B2 (ja) | 2019-09-30 | 2022-11-17 | エルジー・ケム・リミテッド | プロピレンのアンモ酸化用触媒、その製造方法、およびこれを利用したプロピレンのアンモ酸化方法 |
| US12226757B2 (en) | 2019-09-30 | 2025-02-18 | Lg Chem, Ltd. | Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst |
| US12226753B2 (en) | 2019-09-30 | 2025-02-18 | Lg Chem, Ltd. | Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst |
| US12338200B2 (en) | 2019-09-30 | 2025-06-24 | Lg Chem, Ltd. | Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst |
| CN116060030A (zh) * | 2021-11-04 | 2023-05-05 | 中国石油化工股份有限公司 | 一种氨氧化催化剂及其制备方法和应用 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1602405A4 (en) | 2007-01-17 |
| CN1744949A (zh) | 2006-03-08 |
| EP1602405A1 (en) | 2005-12-07 |
| TW200427509A (en) | 2004-12-16 |
| US20060155139A1 (en) | 2006-07-13 |
| KR20050098270A (ko) | 2005-10-11 |
| EP1602405B1 (en) | 2014-09-10 |
| TWI264327B (en) | 2006-10-21 |
| KR100687671B1 (ko) | 2007-03-02 |
| PT1602405E (pt) | 2014-10-10 |
| US7473666B2 (en) | 2009-01-06 |
| CN100345630C (zh) | 2007-10-31 |
| JPWO2004078344A1 (ja) | 2006-06-08 |
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