WO2005054166A1 - 不飽和アルデヒド及び不飽和カルボン酸の製造方法 - Google Patents
不飽和アルデヒド及び不飽和カルボン酸の製造方法 Download PDFInfo
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- WO2005054166A1 WO2005054166A1 PCT/JP2004/013529 JP2004013529W WO2005054166A1 WO 2005054166 A1 WO2005054166 A1 WO 2005054166A1 JP 2004013529 W JP2004013529 W JP 2004013529W WO 2005054166 A1 WO2005054166 A1 WO 2005054166A1
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- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- catalysts
- gas
- activity
- unsaturated carboxylic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
- C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
-
- 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
Definitions
- the present invention relates to a method for producing a corresponding unsaturated aldehyde and unsaturated carboxylic acid stably over a long period of time and in high yield by subjecting olefin to gas phase catalytic oxidation with a molecular oxygen-containing gas.
- Olefins such as propylene and isobutylene are oxidized in the gas phase with molecular oxygen in the presence of a composite oxide catalyst, and the corresponding unsaturated aldehydes such as acrolein and methacrolein and acrylic acid and methacrylic acid respectively.
- unsaturated carboxylic acids Many methods for producing unsaturated carboxylic acids have been proposed in the past, and some of them have already been industrially implemented.
- Patent Literature 1 discloses that a plurality of types of catalysts in which the amounts of Bi and Fe in a Mo—Bi-based composite oxide catalyst are changed are directed to the amounts of Bi and Fe from the inlet of the raw material gas to the outlet thereof.
- a method is disclosed in which the reaction is carried out in a fixed-bed tubular reactor packed so as to reduce the amount of water.
- Patent Document 2 discloses a method of preparing a plurality of types of catalysts having different activities in which the type and Z or amount of an alkaline earth element to be contained are changed, and forming these catalyst layers in a catalyst layer in each reaction tube.
- catalyst A method is disclosed in which a reaction is carried out in a fixed-bed tubular reactor packed so as to increase the reactivity.
- Patent Documents 3 and 4 disclose that a plurality of types of catalysts having different calcination temperatures are prepared without substantially changing the catalyst composition, and the catalyst layers in each reaction tube are arranged in a tube axial direction.
- a method is disclosed in which a plurality of reaction zones divided into two or more layers are reacted in a fixed-bed tubular reactor filled with a catalyst prepared by calcination at a higher temperature toward the inlet of the raw material gas.
- Patent Document 1 JP 2001-48817 A
- Patent Document 2 Japanese Patent No. 2809476
- Patent Document 3 JP-A-10-168003
- Patent Document 4 Japanese Patent No. 3139285
- an object of the present invention is to solve the problems caused by hot spots in the case of vapor phase oxidation of olefins, especially propylene, in the presence of a Mo—Bi-based composite oxide catalyst. It is another object of the present invention to provide a method for producing unsaturated aldehydes and unsaturated carboxylic acids, particularly acrolein and acrylic acid, stably over a long period of time and in high yield.
- the present inventor has conducted intensive research to solve the above-mentioned problems.
- the amount ratio of (atmospheric gas flow rate Z catalyst amount) was determined. It has been found that catalysts obtained by changing or changing the number of calcinations have different activities in the production of unsaturated aldehydes and unsaturated carboxylic acids by gas phase catalytic oxidation of olefins with molecular oxygen. That is, it has been found that the activity of the catalyst can be controlled by changing the conditions for the calcination, and a plurality of catalysts having different activities can be produced.
- the present inventor has sought to transfer a plurality of catalysts having different activities obtained in this manner into a plurality of reaction zones formed by dividing a fixed bed tubular reactor from an inlet of a raw material gas to an outlet thereof. It has been found that the above problem can be solved by using a reactor packed in a specific direction so that the activity becomes larger.
- the present invention has a gist having the following characteristics.
- (A) As the composite oxide catalyst a plurality of catalysts having different activities are used, and the plurality of kinds of catalysts can be obtained by changing the ratio of the amount of the atmosphere gas to the amount of the catalyst to be fired or by changing the number of times of firing.
- (C) A process for producing unsaturated aldehydes and unsaturated carboxylic acids, wherein the plurality of catalysts are packed so as to increase the activity from the inlet to the outlet of the raw material gas in each of the reaction zones.
- X is at least one element selected from the group consisting of Na, K, Rb, Cs, and T1
- Y is at least one element selected from the group consisting of B, P, As, and W
- Z is at least one element selected from the group consisting of Mg, Ca, Zn, Ce and Sm
- Q represents halogen
- aj represents the atomic ratio of each element.
- the production of by-products due to runaway reaction or excessive oxidation reaction accompanying the generation of hot spots is suppressed, and the desired unsaturated aldehyde and the target are obtained with high selectivity and high yield. Since the unsaturated carboxylic acid can be produced and the catalyst can be used stably for a long time, the productivity can be greatly improved.
- the olefin conversion, the target product selectivity, and the yield are calculated by the following formulas.
- X is a group consisting of Na, K, Rb, Cs and T1.
- Y is at least one element selected from the group consisting of B, P, As, and W; and Z is a group consisting of Mg, Ca, Zn, Ce, and Sm.
- Q is a chlorine atom
- the power S is preferable, and when the a power is 12, 0.5 ⁇ b ⁇ 7, 0 ⁇ c ⁇ 10, 0 ⁇ d ⁇ 10, l ⁇ c + d ⁇ 10, 0.05.e ⁇ 3, 0.0005 ⁇ f ⁇ 3, 0 ⁇ g ⁇ 3, 0 ⁇ h ⁇ l, 0 ⁇ i ⁇ 0.05
- the range of 0 ⁇ j ⁇ 40 is particularly preferred.
- the composite oxide catalyst of the present invention is produced by various methods. For example, it is usually manufactured by dissolving or dispersing a required amount of a raw material compound containing each element component constituting the catalyst in an aqueous medium as appropriate, heating and stirring, evaporating to dryness, drying and pulverizing.
- a raw material of each component a nitrate, an ammonium salt, a hydroxide, an oxide, an acetate, or the like of each element is used.
- the obtained powdery mixture is usually preferably formed into an arbitrary shape such as a sphere, a column, or a ring by a molding method such as extrusion molding, granulation molding, and tableting.
- inorganic fibers such as glass fibers and various whiskers may be added to the above mixture to improve the strength and the degree of powdering of the catalyst.
- additives generally known as a binder such as ammonium nitrate, cellulose, starch, polyvinyl alcohol, and stearic acid can be used.
- the composite oxide catalyst of the present invention can be used alone, but may be alumina, silica, silica alumina, silicon carnoid, titanium oxide, magnesium oxide, aluminum sponge, silica titer, or the like.
- Is generally known as an inert carrier and may be used by being carried on a carrier.
- the inorganic fiber may be used to improve the strength of the catalyst, and the binder such as ammonium nitrate may be used to control the physical properties of the catalyst with good reproducibility. Can also be used.
- the above-mentioned molded body or carrier is fired under the flow of an atmospheric gas.
- the firing is usually performed at 400 to 650 ° C, preferably 450 to 600 ° C.
- the reaction is carried out at a temperature of C, usually for 120 hours, preferably 110 hours.
- a plurality of catalysts having different activities are prepared by changing the atmosphere gas flow rate of the firing in the firing process or by changing the number of firings.
- the amount ratio of the atmosphere gas amount to the catalyst amount in the firing is as follows: Under conditions where the amount ratio of the amount of the atmospheric gas (the amount of the catalyst) is large, a catalyst with high activity can be obtained without greatly reducing the selectivity to the target substance. On the other hand, it was found that under the condition that the amount ratio of (atmospheric gas amount Z catalyst amount) is small, a catalyst with improved selectivity to the target product but with reduced activity can be obtained. As described above, by changing the amount ratio of (atmospheric gas amount Z catalyst amount), a plurality of catalysts having different activities are produced. However, in relation to the number of reactor divisions described later, the present invention is preferable. It is preferable to obtain a plurality of catalysts having different activities of 2-4.
- the firing is performed by recalcining the catalyst fired at the above temperature and time. It is performed by multi-stage baking, which is performed again. Each firing is preferably carried out after cooling the obtained fired material.
- the activity of the obtained catalyst decreases as the number of stages increases. That is, the activity of the two-stage calcined catalyst is lower than that of the one-stage calcined catalyst, and the activity of the three-stage calcined catalyst is lower than that of the two-stage calcined catalyst.
- the selectivity for the desired product increases.
- the calcination is preferably performed in 2 to 4 stages, depending on the division number of the reactor described later.
- the firing conditions for the second and subsequent stages may be the same as those for the first stage, such as the temperature, time, and atmosphere gas flow rate, and the second and subsequent stages may be fired under the same conditions.
- a plurality of catalysts having different activities can be easily prepared. For example, by recalcining two kinds of catalysts with different activities, four kinds of catalysts with different activities can be easily prepared.
- the calcination can be performed using an atmosphere calcination furnace.
- Examples of the atmosphere firing furnace include a method in which a fixed bed reactor is filled with a catalyst and heated by an external force under the flow of an atmosphere gas, a method in which the fixed bed reactor is a heat exchange type, an atmosphere gas inside a Matsufuru furnace. , A method of flowing an atmosphere gas inside a tunnel furnace, a method of flowing an atmosphere gas inside a kiln furnace, and the like.
- a method is preferably used in which a fixed bed reactor is filled with a catalyst and heated externally under the flow of atmospheric gas, and more preferably a catalyst is filled in a heat exchange type fixed bed reactor. Then, a method of externally heating under the flow of atmosphere gas can be used.
- the atmosphere gas besides air, a mixed gas of air and an inert gas such as nitrogen can be used. Air can be preferably used because of economic advantages.
- two or more reaction zones are provided by dividing the catalyst layer of the reactor of the fixed-bed tube reactor into two or more layers in the tube axis direction.
- the division of the reactor the more the number of divisions, the easier the suppression of hot spots.
- the division is preferably performed so as to form 2-4 reaction zones.
- the lengths of the divided reaction zones are not necessarily equal, and are arbitrary.
- L1ZL2 is preferably set to 0.1-10, particularly preferably 0.3-3.
- the number of reaction tubes to be used, the diameter of the reaction tubes, the length of the filled catalyst, and the like vary depending on operating conditions, production capacity, and the like, and are appropriately determined.
- two or more kinds of catalysts having different activities are supplied to the reaction zone of the two or more divided reactors from the inlet of the raw material gas toward the outlet thereof. It is filled so that the activity possessed by it becomes large.
- two reaction zones are provided by dividing the reactor, for example, two types of catalysts having different activities are prepared, and the activity in the reaction zone on the raw material gas inlet side (hereinafter referred to as the former reaction zone) is low.
- the catalyst is filled, and the reaction zone on the outlet side (hereinafter referred to as the second reaction zone) is filled with a catalyst having high activity.
- the activity of the catalyst on the inlet side of the raw material gas is reduced by 1%.
- the activity of the catalyst on the gas outlet side is preferably 5 or less, particularly preferably 3 or less. Is preferred. If the activity of the catalyst on the gas outlet side is greater than 5 with respect to the catalyst on the raw material gas inlet side, the temperature of the catalyst layer in the reaction zone on the outlet side is undesirably high.
- a plurality of reaction zones may not necessarily be filled with one kind of catalyst, and may be filled with a plurality of catalysts having different activities!
- shape, size, and the like of the catalyst filled in each reaction zone there are no particular restrictions on the shape, size, and the like of the catalyst filled in each reaction zone, and known shapes, sizes, and other forces can be appropriately selected.
- a method generally used in this type of reaction which may be a single flow method or a recycling method through a reaction tube, may be used.
- a mixed gas that has a strong internal diameter such as 115% by volume of propylene, 3 to 30% by volume of molecular oxygen, 0 to 60% by volume of steam, and 20 to 80% by volume of an inert gas such as nitrogen and carbon dioxide, is preferable.
- C 0.1 Introduced under IMPa pressure and space velocity (SV) 300-5000hr- 1 .
- SV pressure and space velocity
- Examples 1 and 4 are examples of the present invention
- Examples 2, 3 and 5, and 6 are comparative examples.
- the heat-exchange type fixed-bed reactor is filled with 1000 ml of the molded body, and air of 50 OO mlZ is circulated as atmospheric gas.
- the mixture was heated from the outside and calcined at 500 ° C. for 8 hours to produce a composite oxidized catalyst.
- the catalyst calculated from the charged raw materials is a composite oxide having the following atomic ratio.
- a composite oxide catalyst was prepared in exactly the same manner as in the preparation of Catalyst 1, except that 100 mL of air was flown as atmospheric gas.
- Example 1 The reaction was carried out in the same manner as in Example 1 except that only 1500 ml of the catalyst 1 was used. Table 1 shows the performance at the beginning of the reaction and the performance after 1,000 hours.
- Example 1 The reaction was carried out in the same manner as in Example 1 except that only 1500 ml of the catalyst 2 was used. Table 1 shows the performance at the beginning of the reaction and the performance after 1,000 hours.
- Ammonium paramolybdate (105.5 g) was dissolved in 500 ml of heated pure water. Next, 10. lg of ferric nitrate and 97. Og of conoleto nitrate were dissolved in 100 ml of heated pure water. These solutions were mixed gradually with thorough stirring.
- the heat-exchange fixed-bed reactor was filled with 1000 ml of the molded product, and air of 25 OO ml Zmin was passed as atmospheric gas.
- the mixture was heated from the outside and calcined at 505 ° C for 4 hours to produce a composite oxide catalyst.
- the catalyst calculated from the charged raw materials is a composite oxide having the following atomic ratio.
- the catalyst 4 was filled with 500 ml of the catalyst 4 on the raw material gas inlet side of a stainless steel reaction tube having a diameter of 25 mm provided with a thermocouple, and the catalyst 3 was filled with 1000 ml on the raw material gas outlet side.
- the above reaction tube Inlet force Propylene 8 volume 0/0, the air 67 volume 0/0, and the reaction was continued for introduced 1, 000 hour steam 25 volume% of the mixed gas in SV18 OOhr- 1.
- Table 2 shows the performance at the beginning of the reaction and the performance after 1,000 hours.
- Example 5 The reaction was carried out in the same manner as in Example 5 except that only 1500 ml of the catalyst 3 was used. Table 2 shows the performance at the beginning of the reaction and the performance after 1,000 hours.
- Example 5 The reaction was carried out in the same manner as in Example 5 except that only 1500 ml of the catalyst 4 was used. Table 2 shows the performance at the beginning of the reaction and the performance after 1,000 hours.
- the process of the present invention comprises the step of oxidizing olefins, especially propylene, by gas-phase catalytic oxidation with a molecular oxygen-containing gas, and stably and in a high yield with the corresponding unsaturated aldehydes, especially acrolein and unsaturated carboxylic acid, for a long time.
- the unsaturated aldehydes and unsaturated carboxylic acids produced are widely used as raw materials for various chemicals, monomers for general-purpose resins, monomers for functional resins such as water-absorbing resins, flocculants, and thickeners. Used for applications.
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003405046 | 2003-12-03 | ||
| JP2003-405046 | 2003-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005054166A1 true WO2005054166A1 (ja) | 2005-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/013529 Ceased WO2005054166A1 (ja) | 2003-12-03 | 2004-09-16 | 不飽和アルデヒド及び不飽和カルボン酸の製造方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1697794A (ja) |
| WO (1) | WO2005054166A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221032A (ja) * | 2007-03-08 | 2008-09-25 | Nippon Shokubai Co Ltd | 複合酸化物触媒の製造方法および該触媒を用いた不飽和アルデヒドおよび/または不飽和カルボン酸の製造方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016539936A (ja) * | 2013-11-11 | 2016-12-22 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 不飽和アルデヒド及び/又は不飽和カルボン酸の製造法 |
| SG11202109109YA (en) * | 2019-03-29 | 2021-11-29 | Nippon Kayaku Kk | Method for producing unsaturated aldehyde |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991008185A1 (fr) * | 1989-12-06 | 1991-06-13 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Procede de production d'aldehyde methacrylique et d'acide methacrylique |
| JPH044048A (ja) * | 1990-04-19 | 1992-01-08 | Mitsubishi Rayon Co Ltd | 不飽和アルデヒド及び不飽和酸合成用触媒の製造法 |
| JPH083093A (ja) * | 1994-06-20 | 1996-01-09 | Sumitomo Chem Co Ltd | アクロレインおよびアクリル酸の製造方法 |
| WO1998024746A1 (en) * | 1996-12-03 | 1998-06-11 | Nippon Kayaku Kabushiki Kaisha | Process for the preparation of acrolein and acrylic acid |
| JP2001205090A (ja) * | 2000-01-25 | 2001-07-31 | Mitsubishi Rayon Co Ltd | メタクロレインおよびメタクリル酸合成用触媒、ならびにメタクロレインおよびメタクリル酸の製造方法 |
| JP2003038960A (ja) * | 2001-04-25 | 2003-02-12 | Rohm & Haas Co | 改良された触媒 |
-
2004
- 2004-09-16 WO PCT/JP2004/013529 patent/WO2005054166A1/ja not_active Ceased
- 2004-09-16 CN CN 200480000348 patent/CN1697794A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991008185A1 (fr) * | 1989-12-06 | 1991-06-13 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Procede de production d'aldehyde methacrylique et d'acide methacrylique |
| JPH044048A (ja) * | 1990-04-19 | 1992-01-08 | Mitsubishi Rayon Co Ltd | 不飽和アルデヒド及び不飽和酸合成用触媒の製造法 |
| JPH083093A (ja) * | 1994-06-20 | 1996-01-09 | Sumitomo Chem Co Ltd | アクロレインおよびアクリル酸の製造方法 |
| WO1998024746A1 (en) * | 1996-12-03 | 1998-06-11 | Nippon Kayaku Kabushiki Kaisha | Process for the preparation of acrolein and acrylic acid |
| JP2001205090A (ja) * | 2000-01-25 | 2001-07-31 | Mitsubishi Rayon Co Ltd | メタクロレインおよびメタクリル酸合成用触媒、ならびにメタクロレインおよびメタクリル酸の製造方法 |
| JP2003038960A (ja) * | 2001-04-25 | 2003-02-12 | Rohm & Haas Co | 改良された触媒 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221032A (ja) * | 2007-03-08 | 2008-09-25 | Nippon Shokubai Co Ltd | 複合酸化物触媒の製造方法および該触媒を用いた不飽和アルデヒドおよび/または不飽和カルボン酸の製造方法 |
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| CN1697794A (zh) | 2005-11-16 |
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