WO2008026638A1 - Catalyseur zeolithique contenant un compose metallique alcalino-terreux, procede de preparation et procede de regeneration associes et procede de production d'hydrocarbures inferieurs - Google Patents
Catalyseur zeolithique contenant un compose metallique alcalino-terreux, procede de preparation et procede de regeneration associes et procede de production d'hydrocarbures inferieurs Download PDFInfo
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- WO2008026638A1 WO2008026638A1 PCT/JP2007/066766 JP2007066766W WO2008026638A1 WO 2008026638 A1 WO2008026638 A1 WO 2008026638A1 JP 2007066766 W JP2007066766 W JP 2007066766W WO 2008026638 A1 WO2008026638 A1 WO 2008026638A1
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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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
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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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
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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
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
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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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
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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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/90—Regeneration or reactivation
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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
- B01J35/19—Catalysts containing parts with different compositions
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/06—Propene
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/02—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by cracking a single hydrocarbon or a mixture of individually defined hydrocarbons or a normally gaseous hydrocarbon fraction
- C07C4/06—Catalytic processes
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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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/42—Addition of matrix or binder particles
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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
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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
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
- B01J38/12—Treating with free oxygen-containing gas
- B01J38/16—Oxidation gas comprising essentially steam and oxygen
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
- C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
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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
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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
- Y02P20/584—Recycling of catalysts
Definitions
- the present invention relates to an alkaline earth metal compound-containing zeolite catalyst used in a step of synthesizing a lower hydrocarbon by a dehydration condensation reaction from dimethyl ether and / or methanol, and a method for preparing the same.
- the present invention relates to an alkaline earth metal compound-containing zeolite catalyst having a slow carbonaceous precipitation rate during a reaction that is difficult to cause elimination of tetracoordinate anorium in the zeolite lattice and a method for preparing the same.
- the present invention also relates to a method for producing a lower hydrocarbon using the zeolite catalyst containing an alkaline earth metal compound.
- the present invention also relates to a method for regenerating the alkaline earth metal compound-containing zeolite catalyst used in the step of synthesizing a lower hydrocarbon by a dehydration condensation reaction from dimethyl ether and / or methanol.
- the zeolite catalyst is either dimethyl ether (hereinafter sometimes abbreviated as DME) or methanol, or a reaction for synthesizing lower hydrocarbons such as dimethyl ether and methanol power (DTO reaction / reaction). ), Methanol synthesis reaction (Methanol to Gasoline, MTG reaction), fluid catalytic cracking (FCC) and many other processes.
- DME dimethyl ether
- methanol a reaction for synthesizing lower hydrocarbons such as dimethyl ether and methanol power
- FCC fluid catalytic cracking
- the main cause of the deactivation of the zeolite catalyst is the detachment of the anorium in the zeolite lattice by exposure to an atmosphere containing water (steam) generated by the reaction, It can be mentioned that carbonaceous matter is deposited on the zeolite catalyst by the reaction.
- Patent Document 1 Japanese Patent Application Laid-Open No. 59-136138
- Patent Document 2 Japanese Patent Laid-Open No. 60-257838
- Patent Document 3 Japanese Patent Publication No. 3-63430.
- Non-Patent Document 1 J. Catal., 93, 471 ( 1985)
- Non-Patent Document 2 J. Chem. Soc. Fara day Trans. 1, 81, 2215 (1985)).
- the method of regenerating zeolite from which aluminum has been desorbed has a problem that it is difficult to apply to an actual process because a special reagent or gas is required for the regeneration.
- an MFI structure zeolite catalyst is SAPO-34 catalyst.
- the catalytic activity is reduced due to the deposition of carbonaceous matter on the catalyst.Therefore, an air stream containing oxygen is periodically supplied to the catalyst, and the carbonaceous matter on the catalyst is combusted. Need to recover.
- the present invention has been made in view of the above circumstances, and is difficult to cause desorption of tetracoordinate aluminum in the zeolite lattice! /,
- An alkaline earth metal compound-containing zeolite catalyst, and the above zeolite catalyst An object of the present invention is to provide a simple and inexpensive preparation method. It is another object of the present invention to provide a method for regenerating an alkaline earth metal compound-containing zeolite catalyst that can easily regenerate an alkaline earth metal compound-containing zeolite catalyst to increase the life of the catalyst. And
- the alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a composite composed of at least a first component, a second component, and a third component, and the first component is a proton type zeolite and / or an ammonium type.
- Zeolite the second component is an alkaline earth metal compound
- the third component is one selected from the group consisting of oxides and / or hydroxides of aluminum, oxides and / or hydroxides of silicon, and clay Or two or more
- the Si / Al molar ratio of the first component is 10 or more and 300 or less
- the content of the second component relative to the amount of the first component is 0.
- the content of the third component with respect to the amount of the first component is 15% by mass or more and 200% by mass or less.
- the first component is preferably MFI structure zeolite.
- the second component is preferably a calcium compound.
- the zeolite catalyst containing the alkaline earth metal compound of the present invention has a zeolite lattice per mass of zeolite after being exposed to an atmosphere of a temperature of 530 ° C, a partial pressure of water vapor of 0.35 MPa and a partial pressure of nitrogen of 0.15 MPa for 48 hours.
- the remaining amount of 4-coordinated aluminum is composed of only the first component. It is characterized in that it is more than 5 times the residual amount of 4-coordinated aluminum in the zeolite zeolite per mass of zeolite after exposure to the same proton type zeolite.
- the alkaline earth metal compound-containing zeolite catalyst of the present invention can be suitably used when synthesizing lower hydrocarbons from dimethyl ether and / or methanol.
- the method for preparing an alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a mixing and kneading step in which a polar solvent is added to and mixed with at least the first component, the second component and the third component.
- the mixture obtained in the mixing and kneading step is dried and calcined to prepare a composite by drying and calcining step, wherein the first component is proton type zeolite and / or ammonium type zeolite,
- the second component is an alkaline earth metal compound
- the third component is one or more selected from the group consisting of aluminum oxide and / or hydroxide, silicon oxide and / or hydroxide, and clay.
- the Si / Al molar ratio of the first component is 10 or more and 300 or less, and the content of the second component with respect to the amount of the first component is 0.3% by mass or more in terms of alkaline earth metal, 10 Less than mass%, Serial first the content of the third component to component content: 15% by mass or more, characterized by a 200 wt% or less.
- the method for preparing an alkaline earth metal compound-containing zeolite catalyst of the present invention includes a steam treatment step in which the composite obtained in the drying-firing step is brought into contact with steam or a reaction atmosphere that generates steam. Is preferred!
- the first component is preferably MFI structure zeolite.
- the method for preparing an alkaline earth metal compound-containing zeolite catalyst of the present invention is preferably the alkaline earth metal power calcium compound.
- the method for producing lower hydrocarbons of the present invention is a method for producing lower hydrocarbons by synthesizing lower hydrocarbons from dimethyl ether and / or methanol, wherein the alkaline earth metal compound-containing zeolite catalyst of the present invention is used.
- the propylene yield is 40% by mass or more, the methane yield is less than 1.0% by mass, and the carbon monoxide yield is 0.5% by mass or less.
- the method for regenerating a zeolite catalyst containing an alkaline earth metal compound of the present invention comprises dimethyl ether.
- a step of firing in an air stream containing water vapor comprises dimethyl ether.
- the temperature at which the alkaline earth metal compound-containing zeolite catalyst is calcined is preferably 400 ° C or higher and 700 ° C or lower.
- the alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a composite composed of at least a first component, a second component, and a third component, and the first component is a proton type zeolite and / or an ammonium type.
- Zeolite the second component is an alkaline earth metal compound
- the third component is one selected from the group consisting of oxides and / or hydroxides of aluminum, oxides and / or hydroxides of silicon, and clay Or two or more
- the Si / Al molar ratio of the first component is 10 or more and 300 or less
- the content of the second component relative to the amount of the first component is 0.
- the content of the third component relative to the amount of the first component is 15% by mass or more and 200% by mass or less.
- This catalyst has a long catalyst life in order to suppress the release of aluminum from the zeolite lattice by both the second and third components. Therefore, improvement of the catalyst life for a long time leads to reduction of the catalyst filling amount and the frequency of catalyst replacement, thereby reducing the equipment cost and the operation cost.
- the method for preparing an alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a mixing and kneading step in which a polar solvent is added to and mixed with at least the first component, the second component and the third component.
- the mixture obtained in the mixing and kneading step is dried and calcined to prepare a composite by drying and calcining step, wherein the first component is proton type zeolite and / or ammonium type zeolite,
- the second component is an alkaline earth metal compound
- the third component is one or more selected from the group consisting of aluminum oxide and / or hydroxide, silicon oxide and / or hydroxide, and clay.
- the Si / Al molar ratio of the first component is 10 or more and 300 or less, and the first component amount relative to the first component amount is The content of the two components is 0.3% by mass or more and less than 10% by mass in terms of alkaline earth metal, and the content of the third component with respect to the amount of the first component is 15% by mass or more and 200% by mass or less.
- this preparation method it is generally prepared by mixing, kneading, drying, and firing the second component and the third component in the inexpensive proton-type MFI structure zeolite and the ammonia-type MFI structure zeolite. It is easy and inexpensive to obtain an alkaline earth metal-containing zeolite catalyst that is highly resistant to water vapor and has a long catalyst life.
- the method for producing lower hydrocarbons of the present invention uses the alkaline earth metal compound-containing zeolite catalyst of the present invention, so that the lower hydrocarbons can be obtained in high yield and the catalyst can be regenerated by improving the catalyst life. Since the cycle is longer and the number of playbacks is reduced, production efficiency is improved and manufacturing costs can be reduced.
- the method for regenerating an alkaline earth metal compound-containing zeolite catalyst of the present invention is a method for regenerating an alkaline earth metal compound-containing zeolite catalyst used in the synthesis of lower hydrocarbons from dimethyl ether and / or methanol. Therefore, since the catalyst life can be improved by firing the zeolite catalyst containing the alkaline earth metal compound of the present invention in an air stream containing oxygen and water vapor, the number of catalyst regenerations is reduced. As a result, the cost for synthesizing lower hydrocarbons from dimethyl ether and / or methanol can be reduced. In addition, water vapor can be used as a dilution gas during the catalyst regeneration process, so that facilities such as a cryogenic air separation device for producing nitrogen are not required.
- FIG. 1 is a graph showing the relative catalyst lifetime with respect to the degree of steam treatment for catalysts A to F prepared in the experimental example of the first embodiment of the present invention.
- the alkaline earth metal compound-containing zeolite catalyst of the present invention and the preparation method thereof, and the production of lower hydrocarbons using the alkaline earth metal compound-containing zeolite catalyst The best mode of the method will be described.
- the alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a composite composed of at least a first component, a second component and a third component, wherein the first component is a proton type zeolite and / or an ammonia type zeolite,
- the second component is an alkaline earth metal compound
- the third component is one or two selected from the group consisting of oxides and / or hydroxides of aluminum, oxides and / or hydroxides of silicon, and clay
- the Si / Al molar ratio of the first component is 10 or more and 300 or less, and the content of the second component relative to the amount of the first component is 0.3% by mass in terms of alkaline earth metal.
- the content of the third component relative to the amount of the first component is 15% by mass or more and 200% by mass or less.
- the first component is preferably MFI structure zeolite.
- the MFI structure is a skeletal structure name defined by the International Zolite Society.
- the Si / Al molar ratio is 10 or more and 300 or less in the first component proton type zeolite or ammonium type zeolite.
- the Si / Al molar ratio When the Si / Al molar ratio is less than 10, the effective acid sites of zeolite are increased, the carbonaceous deposition on the alkaline earth metal compound-containing zeolite catalyst is promoted, and the catalyst life is shortened. On the other hand, if the Si / Al molar ratio exceeds 300, the effective acid sites of zeolite will decrease and the catalytic activity will decrease.
- the content of the second component relative to the amount of the first component is 0.
- the content of the second component relative to the amount of the first component is less than 0.3% by mass in terms of alkaline earth metal, the control of the acid properties as a catalyst and the suppression of dealumination will be insufficient.
- the content ratio of the second component relative to the first component amount is converted to alkaline earth metal. If it is 10% by mass or more, a side reaction due to an excessive amount of an alkaline earth metal compound (mainly oxide or carbonate) proceeds, which is not preferable.
- the content of the third component with respect to the amount of the first component is 15% by mass or more and 200% by mass or less.
- the content of the third component relative to the amount of the first component is less than 15% by mass, the strength of the resulting catalyst is low, causing problems such as partial powdering during use.
- the content rate of the third component with respect to the first component amount exceeds 200% by mass, the proportion of the first component that is active in the reaction decreases, and the performance as a catalyst decreases.
- the first component constituting the composite is a proton type zeolite or an ammonia type zeolite, and these zeolites are preferably MFI structure zeolites.
- the zeolite earth catalyst containing alkaline earth metal compound of the present invention can be easily and inexpensively prepared by using a proton-type zeolite or an ammonia-type zeolite that is commercially available. I'll do it.
- Examples of the alkaline earth metal compound of the second component include magnesium carbonate (MgCO 3), hydroxy acid
- Calcium (Ca (N0)), calcium aluminate (CaAl 2 O), calcium orthosilicate (Ca (N0)), calcium aluminate (CaAl 2 O), calcium orthosilicate (
- strontium aluminate SrAl 2 O 3
- strontium silicate barium carbonate
- Ba Barium nitrate (Ba (N0)), Barium aluminate (BaAl0), Barium silicate
- the third component is one or more selected from the group consisting of aluminum oxide and / or hydroxide, silicon oxide and / or hydroxide, and clay.
- aluminum oxide and / or hydroxide silicon oxide and / or hydroxide
- clay As the oxide of aluminum, ⁇ -alumina (Al)) or the like is used.
- Silicon oxide (SiO 2) is used as the silicon oxide.
- silicon hydroxides examples include orthosilicic acid (H SiO), metasilicic acid (H SiO), etc.
- clay kaolin, bentonite or the like is used.
- the alkaline earth metal compound-containing zeolitic catalyst having such a structure has a zeolitic mass per mass after exposure to an atmosphere of a temperature of 530 ° C, a water vapor partial pressure of 0.35 MPa, and a nitrogen partial pressure of 0.15 MPa for 48 hours.
- Residual amount of 4-coordinated aluminum in the zeolite lattice More than 5 times the residual amount of 4-coordinated aluminum in the zeolite based on the mass of the zeolite after exposing the proton type zeolite consisting only of the first component under the same conditions And more preferably 10 times or more.
- Residual volume of 4-coordinated aluminum in the zeolite lattice per mass of zeolite after exposure to the above conditions Zeolite lattice per mass of zeolite after exposure to proton-type zeolite consisting of only the first component under the same conditions. 5 times or more of the remaining amount of 4-coordinated aluminum, the reduction in catalytic activity due to exposure to water vapor in the reaction and regeneration atmosphere can be mitigated, and the number of times the catalyst is recycled is increased. This reduces the frequency of catalyst exchange.
- This catalyst has a long catalyst life because it suppresses the release of aluminum from the zeolite lattice by both the second component and the third component. Therefore, improvement of long-term catalyst life leads to reduction of catalyst filling amount and frequency of catalyst replacement, and can reduce equipment cost and operation cost.
- a composition composed of at least a first component, a second component and a third component and a polar solvent are mixed and kneaded with a mortar, a lye machine, a kneader, etc., and at least a first component, a second component, a third component and a polarity
- a mixture composed of a solvent is prepared (mixing and kneading step).
- a proton type zeolite or an ammonium type zeolite having a Si / Al molar ratio of 10 or more and 300 or less is used as the first component.
- an alkaline earth metal compound is used as the second component.
- the third component one or more selected from the group consisting of aluminum oxide and / or hydroxide, silicon oxide and / or hydroxide, and clay are used.
- the content of the second component relative to the amount of the first component is 0.3% by mass or more and less than 10% by mass in terms of alkaline earth metal.
- Water is the most suitable polar solvent Alcohols such as methanol, ethanol and propanol, ether ethers such as tetrahydrofuran, polar organic solvents such as esters, nitriles, amides and sulfoxides should be used You can also.
- polar solvent Alcohols such as methanol, ethanol and propanol
- ether ethers such as tetrahydrofuran
- polar organic solvents such as esters, nitriles, amides and sulfoxides
- an additive such as graphite, and celluloses may be added. .
- the mixture obtained in the mixing and kneading step is molded by extrusion molding using an extruder, spherical body molding using a Malmerizer, or the like to obtain a molded body (molding step).
- the molded body obtained in the molding process is dried by a dryer and then fired in a firing furnace such as a pine furnace or tunnel furnace (drying and firing). Process). Thereby, the alkaline earth metal compound-containing zeolite catalyst of the present invention is obtained.
- a drying and firing step it is preferable to dry the molded body at 80 ° C or higher and 150 ° C or lower for 0.5 hour or longer and 30 hours or shorter! /.
- the molded body after drying is preferably fired at 350 ° C. or higher and 750 ° C. or lower for 1 hour or longer and 50 hours or shorter.
- the method for preparing an alkaline earth metal compound-containing zeolite catalyst of the present invention comprises a mixing and kneading step in which a polar solvent is added to and mixed with at least the first component, the second component and the third component.
- the mixture obtained in the mixing and kneading step is dried and calcined to prepare a composite by drying and calcining step, wherein the first component is proton type zeolite and / or ammonium type zeolite,
- the second component is an alkaline earth metal compound
- the third component is one or more selected from the group consisting of oxides and / or hydroxides of aluminum, oxides and / or hydroxides of silicon, and clays
- the Si / Al molar ratio of the first component is 10 or more and 300 or less, and the content of the second component with respect to the amount of the first component is 0.3% by mass or more in terms of alkaline earth metal, 10 Less than mass%, Serial The content of the third component relative to the first component content: 15% by mass or more and 200 mass% or less.
- alkaline earth metal compound-containing zeolite catalyst of the present invention As an example of an embodiment of the alkaline earth metal compound-containing zeolite catalyst of the present invention, a method for producing lower hydrocarbons from dimethyl ether and / or methanol will be described.
- Alkaline earth metal compound-containing zeolite having a composite strength obtained in the drying and firing step is brought into contact with water or a force containing 0.1 or more by volume of water vapor and / or an inert gas (nitrogen, carbon dioxide, etc.), or a reaction atmosphere that produces water vapor. Also good (steam treatment process). In this steam treatment process, depending on the conditions, even if the steam is partially in the form of liquid water, it does not work. It is also possible to proceed with this steam treatment process simultaneously with the drying / firing process.
- the reaction that generates water vapor is a reaction that generates water vapor by dehydration of reactants on this catalyst, such as DTO / MTO reaction or alcohol dehydration reaction.
- the time for contacting the composite with water vapor or the reaction atmosphere for producing water vapor is preferably 1 hour or more and 50 hours or less.
- dimethyl ether or methanol In order to synthesize lower hydrocarbons from either dimethyl ether or methanol, or dimethyl ether and methanol using a zeolite catalyst containing an alkaline earth metal compound that has been subjected to steam treatment, dimethyl ether or methanol is used. Either one or dimethyl ether and methanol are supplied as gas, and this gas is brought into contact with an alkaline earth metal compound-containing zeolite catalyst.
- Specific examples of the method for contacting the gas with the catalyst include a fixed bed reaction method and a fluidized bed reaction method. In this method for producing lower hydrocarbons, lower hydrocarbons are synthesized from dimethyl ether and / or methanol. The reaction can be performed over a wide range of temperature and pressure conditions.
- the reaction temperature is preferably 300 ° C or higher and 750 ° C or lower, more preferably 400 ° C or higher and 650 ° C or lower.
- the reaction temperature is less than 300 ° C, the energy catalytic activity is insufficient.
- the reaction temperature exceeds 750 ° C, the carbonaceous deposition rate is large, the activity is rapidly decreasing, and the catalyst is altered such as structural destruction.
- an alkaline earth metal compound is contained. It can be fed onto the zeolite catalyst.
- the unit weight of catalyst is the weight-based space that is equivalent to the unit catalyst mass and dimethyl ether (hereinafter abbreviated as “DME”) supplied per unit time.
- the speed (hereinafter abbreviated as “WHSV”) is preferably 0.025 g-DME / (g-catalyst.hour) or more and 50 g-DME / (g-catalyst.hour) or less.
- the lower hydrocarbons produced on the alkaline earth metal compound-containing zeolite catalyst and flowing out of the reactor can be separated into the respective desired products by a known separation and purification method.
- the method for regenerating an alkaline earth metal compound-containing zeolite catalyst of the present invention is a method for regenerating an alkaline earth metal compound-containing zeolite catalyst used in the synthesis of lower hydrocarbons from dimethyl ether and / or methanol. Therefore, the present invention is a method including a step of firing the zeolite alloy containing an alkaline earth metal compound of the present invention in an air stream containing oxygen and water vapor.
- the MFI structure is a skeletal structure name defined by the International Zolite Society.
- the alkaline earth metal compound-containing zeolite catalyst is used to convert lower hydrocarbons from either dimethyl ether or methanol, or from dimethyl ether and methanol. After performing the synthesis step for a certain period, the alkaline earth metal compound-containing zeolite catalyst is fired in an air stream containing oxygen and water vapor to recover the catalytic activity.
- the ratio of the flow rate of water vapor to the flow rate of oxygen in an air flow containing oxygen and water vapor is 5 or more and 2000 or less. More preferably, it is 1000 or less.
- the ratio of the flow rate of water vapor to the flow rate of oxygen is less than 5, the dilution of oxygen is insufficient, and the temperature of the catalyst layer rises due to the heat of combustion of carbonaceous matter on the catalyst, which may cause catalyst alteration such as structural destruction. There is. In addition, the treatment effect with water vapor may not be sufficiently obtained. On the other hand, if the ratio of the flow rate of water vapor to the flow rate of oxygen exceeds 2000, the oxygen concentration is too low, and therefore, the catalyst regeneration time in which the combustion of carbonaceous matter on the catalyst is delayed is unpreferable.
- the exhaust gas from the reactor being regenerated in an air stream containing oxygen and water vapor is recycled, or carbon dioxide, argon, etc. Inert gas is included!
- the temperature at which the alkaline earth metal compound-containing zeolite catalyst is calcined is 400 ° C or higher and 700 ° C or lower. More preferably, the temperature is C or more and 650 ° C. or less.
- the temperature force for calcining the alkaline earth metal compound-containing zeolite catalyst is less than 00 ° C, the carbonaceous material on the catalyst cannot be burned, and the catalytic activity cannot be sufficiently recovered.
- the temperature force for calcining the alkaline earth metal compound-containing zeolite catalyst exceeds 700 ° C, the catalyst may be altered, such as structural destruction.
- the time for calcining the alkaline earth metal compound-containing zeolite catalyst is preferably 3 hours or more and 300 hours or less, preferably 5 hours or more and 150 hours or less. More preferred.
- the alkaline earth metal compound-containing zeolite catalyst is calcined for less than 3 hours, the carbonaceous material on the catalyst cannot be combusted sufficiently and the catalytic activity cannot be fully recovered.
- the time for calcination of the alkaline earth metal compound-containing zeolite catalyst exceeds 300 hours, the catalyst is exposed to an air stream containing oxygen and water vapor for a long time. Leading to a decrease in long-term lifespan.
- the method for regenerating a zeolite catalyst containing an alkaline earth metal compound of the present invention comprises dimethyl ether.
- the life of the catalyst can be improved by calcination in an air stream containing water and steam, resulting in a decrease in the number of catalyst regenerations, resulting in the cost of synthesizing lower hydrocarbons from dimethyl ether and / or methanol. Can be reduced.
- water vapor can be used as a dilution gas during the catalyst regeneration process, so that facilities such as a cryogenic air separation device for producing nitrogen are not required.
- the ammonium type MFI structure zeolite 100g and calcium carbonate 5. Og were mixed, and an appropriate amount of ion-exchanged water was added and kneaded to prepare a mixture of both. This mixture was dried at 120 ° C. and then air calcined at 550 ° C. for 12 hours to obtain a catalyst. This catalyst was designated as Coleopteran C.
- Ammonium type MFI structure zeolite 10g and boehmite (Al O equivalent content) 70 mass%) 28 ⁇ were mixed, and an appropriate amount of ion-exchanged water was added and kneaded to prepare a mixture of both. This mixture was extruded using an extruder. Next, the molded body obtained by extrusion molding was dried at 120 ° C. and then air calcined at 550 ° C. for 12 hours to obtain a catalyst. This catalyst was designated as Catalyst D.
- ammonium type MFI structure zeolite 1OOg The ammonium type MFI structure zeolite 1OOg, the above-mentioned 262 g of baseite, and calcium carbonate 5. Og were mixed, and an appropriate amount of ion-exchanged water was added and kneaded to prepare a mixture thereof. This mixture was extruded using an extruder.
- catalyst G This catalyst was designated as catalyst G.
- the catalyst A obtained in Experimental Example 1 was subjected to the following treatment in order to evaluate water vapor resistance.
- Catalyst A was vacuum pretreated at 400 ° C. for 3 hours. Thereafter, the 27A1- MAS-NMR spectrum of this catalyst A was measured by the Bull force DRX-400, and the zeolite mass was measured. The amount of 4-coordinated aluminum in each zeolite lattice was quantified. The amount of tetracoordinated aluminum in the zeolite lattice measured in Comparative Example A1 was set to 100.
- Catalyst A was exposed to an atmosphere of a temperature of 530 ° C., a partial pressure of water vapor of 0.35 MPa, and a partial pressure of nitrogen of 0.15 MPa for 48 hours to perform a steam treatment.
- This steam-treated catalyst A was subjected to vacuum pretreatment at a temperature of 400 ° C for 3 hours. Thereafter, the 27 A1 MAS-NMR spectrum of this catalyst A was measured by a Bull force DRX-400, and the amount of tetracoordinated aluminum in the zeolite lattice per mass of the zeolite was quantified.
- Table 1 shows the relative amount of the tetracoordinated aluminum content of Comparative Example A2 with respect to the tetracoordinated aluminum content of Comparative Example A1.
- Comparative Example A7 Except for using catalyst D obtained in Experimental Example 4, in the same manner as Comparative Example Al, 4-coordination per zeolite mass of Comparative Example A7 with respect to the amount of 4-coordinated aluminum per mass of zeolite of Comparative Example A1 The relative amount of aluminum was quantified. The results are shown in Table 1.
- Example A1 Four-coordinate per zeolite mass of Example A1 with respect to the amount of four-coordinated aluminum per mass of zeolite of Comparative Example A1, except that the catalyst E obtained in Experimental Example 5 was used. The relative amount of aluminum was quantified. The results are shown in Table 1.
- the acid sites on the tetracoordinated aluminum present in the zeolite lattice are the catalytically active sites.
- the amount of this tetracoordinated aluminum decreases, leading to a decrease in the acidity of the zeolite, that is, a decrease in the activity of the zeolite. Therefore, even after exposure to water vapor atmosphere, a lot of 4-coordinated aluminum remains! /, Ru catalyst is said to be highly water vapor resistant catalyst Kugu to cause desorption tetracoordinate aluminum in Zeoraito grid.
- the catalyst A was subjected to a steam treatment for 48 hours at a temperature of 530 ° C, a steam partial pressure of 0 ⁇ 35 MPa, and a nitrogen partial pressure of 0.15 MPa. It was confirmed that the amount of tetracoordinated aluminum decreased to 6%.
- the catalyst B was subjected to water vapor treatment at a temperature of 530 ° C, a partial pressure of water vapor of 0.35 MPa, a partial pressure of nitrogen of 0.15 MPa, and 48 hours, whereby four coordinations in the zeolite lattice. It was confirmed that the amount of aluminum decreased to 22%. Catalyst B is thought to have suppressed the elimination of tetracoordinated aluminum in the zeolite lattice because calcium carbonate was added.
- Comparative Example A8 the amount of 4-coordinated aluminum was reduced to 36% by subjecting Catalyst D to steam treatment at a temperature of 530 ° C, a steam partial pressure of 0.35 MPa, and a nitrogen partial pressure of 0.15 MPa for 48 hours. Confirmed to do.
- oxides and / or hydroxides of aluminum are present in the catalyst, which suppresses the elimination of tetracoordinated aluminum in the zeolite lattice. Compared with, the elimination of tetracoordinated aluminum in the zeolite lattice is thought to be suppressed.
- Comparative Example A10 the catalyst F was subjected to water vapor treatment at a temperature of 530 ° C, a partial pressure of water vapor of 0.35 MPa, a partial pressure of nitrogen of 0.15 MPa, and 48 hours, thereby remaining 63% of 4-coordinated aluminum. It was confirmed that In Comparative Example A10, by adding boehmite and calcium carbonate and firing, it was possible to obtain a catalyst having high water vapor resistance, in which desorption of tetracoordinated aluminum hardly occurred.
- Example A2 86% of 4-coordinated aluminum remains by performing steam treatment for 48 hours at a temperature of 530 ° C, a partial pressure of water vapor of 0.35 MPa, and a partial pressure of nitrogen of 0.15 MPa. It was confirmed.
- Example A2 due to the effect of combining an appropriate amount of aluminum oxide and / or hydroxide and an appropriate amount of calcium carbonate on MFI structure zeolite, the most decoordinated 4-coordinated aluminum of all catalysts. It was possible to obtain a catalyst with high water vapor resistance that hardly releases.
- Catalyst A was used to perform a catalyst performance test in an isothermal reactor.
- Dimethyl ether was mixed at a flow rate of 1272 Ncm 3 / h and nitrogen at a flow rate of 1272 Ncm 3 / h and sent to the reaction tube to react with the catalyst at a temperature of 530 ° C. and normal pressure.
- the weight-based space velocity (WHSV) which is the ratio of the raw material dimethyl ether (DME) supply to the catalyst amount, was 9.6 g-D ME / (g-zeolite 'time).
- Table 2 shows the relative catalyst lifetime and the yield (mass%) of propylene, methane, and carbon monoxide.
- the relative catalyst life is a relative value of each catalyst life when the catalyst life of Comparative Example All is 100.
- Catalyst A was exposed to an atmosphere of a temperature of 530 ° C., a partial pressure of water vapor of 0.08 MPa, and a partial pressure of nitrogen of 0.02 MPa for 24 hours to perform a water vapor treatment.
- Dimethyl ether was mixed at a flow rate of 1272 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to react with the catalyst at a temperature of 530 ° C. and normal pressure.
- the weight-based space velocity (WHSV) which is the ratio of the raw material dimethyl ether (DME) supply to the catalyst amount, was 9.6 g—DME / (g—zeolite time).
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- Catalyst A was exposed to an atmosphere of a temperature of 530 ° C., a partial pressure of water vapor of 0.35 MPa, and a partial pressure of nitrogen of 0.15 MPa for 48 hours to perform a water vapor treatment.
- Dimethyl ether was mixed at a flow rate of 1272 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to react with the catalyst at a temperature of 530 ° C. and normal pressure.
- the weight-based space velocity (WHS V) which is the ratio of the raw material dimethyl ether (DME) supply to the catalyst amount, was 9.6 g—DME / (g—zeolite time).
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- Catalyst A was exposed to an atmosphere at a temperature of 530 ° C., a partial pressure of water vapor of 0.35 MPa, and a partial pressure of nitrogen of 0.15 MPa for 96 hours to perform a steam treatment.
- Dimethyl ether was mixed at a flow rate of 1272 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to react with the catalyst at a temperature of 530 ° C. and normal pressure.
- the weight-based space velocity (WHS V) which is the ratio of the raw material dimethyl ether (DME) supply to the catalyst amount, was 9.6 g—DME / (g—zeolite time).
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- a catalyst performance test was conducted in the same manner as in Comparative Example A13 except that Catalyst B was used.
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane, and carbon monoxide.
- a catalyst performance test was conducted in the same manner as in Comparative Example A13 except that Catalyst F was used.
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- Example A4 A catalyst performance test was conducted in the same manner as Comparative Example A1, except that catalyst E was used. Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- Example A4 A catalyst performance test was conducted in the same manner as Comparative Example A1, except that catalyst E was used. Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- a catalyst performance test was conducted in the same manner as in Comparative Example A13 except that Catalyst E was used.
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- a catalyst performance test was conducted in the same manner as in Comparative Example A12 except that catalyst G was used.
- Table 2 shows the relative catalyst lifetime and the yield (% by mass) of propylene, methane and carbon monoxide.
- Figure 1 shows the relative catalyst life with respect to the degree of steam treatment.
- the value obtained by multiplying the steam partial pressure by the steam treatment time is the degree of steam treatment
- the relative catalyst life is a relative value of the life of each catalyst when the catalyst life of Comparative Example All is 100, and is the vertical axis of the graph of FIG. [0080]
- the catalysts A to E were subjected to steam treatment by exposing them to an atmosphere at a temperature of 530 ° C, a steam partial pressure of 0.08 MPa, and a nitrogen partial pressure of 0.02 MPa for 24 hours. It was found that the life was improved (Comparative Examples A1, A12, A15, A16, A18, A19, A22, A2 3, Examples A3, A4).
- Such a tendency is considered to be caused by the fact that the lattice alcohol constituting the zeolite is detached and the acid sites of the zeolite are reduced with the steam treatment. That is, in the steam treatment of the catalysts A to E, initially, the acid sites of the zeolite are moderately decreased, so that the precipitation of carbonaceous matter is suppressed and the catalyst life is improved. Thereafter, the acid sites of the zeolite are decreased. This is because the lifetime of the dimethyl ether leaks too early and the life is reduced. Even if the degree of steam treatment is large, a catalyst that maintains a long catalyst life can be said to have a high steam resistance that is difficult to cause the desorption of 4-coordinated aluminum in the zeolite lattice.
- Catalyst F has a long catalyst life even without steam treatment (Comparative Example A26). This is thought to be due to containing a large amount of calcium carbonate. In addition, if the catalyst F is subjected to steam treatment in an atmosphere of 530 ° C, water vapor partial pressure 0.35MPa, nitrogen partial pressure 0.15MPa for 48 hours, the catalyst life is improved and comparable to Catalyst C and Catalyst E. (Comparative example A27) ).
- Catalysts A and C to E which are not subjected to steam treatment, produce 1.0% by mass or more of methane and / or 0.3% by mass or more of carbon monoxide (Comparative Examples All, A18, A22 Example A3). Even if the catalyst A is subjected to steam treatment, the methane yield is 1.0% by mass or more (Comparative Example A12 A14). However, if the catalyst C to E is subjected to an appropriate steam treatment that does not deactivate the catalyst, The yield is less than 1.0% by mass, and the carbon monoxide yield is less than 0.3% by mass (Comparative Examples A19, A20, A23, A24, Examples A4-A6).
- Catalyst B without steam treatment had a methane yield of 1.8% by mass and a carbon monoxide yield of 0.80% by mass (Comparative Example A15). Even with steam treatment, the methane yield was 0.8 0.9% by mass and the carbon monoxide yield was 0.6-0.65% by mass. In other words, it was impossible to suppress, but it was a component force (Comparative Examples A16, A17).
- Catalyst F without steam treatment has a methane yield of 1.8% by mass and a carbon monoxide yield of 3.10% by mass compared to other catalysts (Comparative Example A26). This is probably because dimethyl ether is decomposed at the base point because it contains a large amount of calcium carbonate. Even if the catalyst F is subjected to steam treatment, the yield of methane is 1.0 mass% and the yield of carbon monoxide is 1.56 mass%, and these side reactions cannot be suppressed by the steam treatment! /, That is the component force (Comparative Example A27).
- Catalyst G is propylene yield 40 mass 0/0, methane yield 0.9 mass 0/0, it is a component force of the yield of carbon monoxide is 10 wt% 0., Ivy (Example A7).
- Catalyst F which is obtained by kneading a large amount of calcium carbonate and bermite with an appropriate amount of ion-exchanged water and then drying and calcining the ammonia type MFI structure zeolite, has a relatively high water vapor resistance. Even with the steam treatment, the production of methane and carbon monoxide as by-products could not be suppressed! Methane and monoxide Even if it is recycled to the reactor, it does not convert into poorly reactive olefins, so the decomposition reaction they produce is preferable! Therefore, it can be said that catalyst F is not suitable for the reaction for producing lower hydrocarbons from dimethyl ether and / or methanol.
- Catalyst C obtained by kneading an appropriate amount of calcium carbonate with an appropriate amount of ion-exchanged water and then drying and calcining the ammonium type MFI structure zeolite will release aluminum in the zeolite lattice by the calcium compound. It is suppressed and has a high water vapor resistance compared to Catalyst A, which is proton type MFI structure zeolite.
- Catalyst D which is obtained by kneading boehmite with an appropriate amount of ion-exchanged water and then drying and calcining it in ammonium type MFI structure zeolite, is due to the effects of aluminum oxide and / or hydroxide. It was found that desorption of aluminum in the zeolite lattice was suppressed, and that it had higher water vapor resistance than catalyst A, a proton-type MFI structure zeolite.
- Catalyst E obtained by kneading an appropriate amount of calcium carbonate and boehmite with an appropriate amount of ion-exchanged water and then drying and calcining the ammonium type MFI structure zeolite, contains calcium oxide and aluminum oxide and / or Due to the effect of hydroxide, the most excellent water vapor resistance was a component.
- catalyst E is used in the reaction as it is, the yield of methane and carbon monoxide is relatively high and the catalyst life is not so long. However, the catalyst E has a component that the side reaction is suppressed and the catalyst life is greatly improved by performing the steam treatment.
- Catalyst F which is obtained by kneading a large amount of calcium carbonate and boehmite with an appropriate amount of ion-exchanged water and then drying and calcining the ammonium type MFI structure zeolite, has lower water vapor resistance than catalyst E. I got it. Furthermore, Catalyst F remained high in yield even after steam treatment with high yields of methane and carbon monoxide.
- Zeolite catalysts D and E were prepared in the same manner as in Experimental Examples 4 and 5.
- Catalyst D was subjected to steam treatment for 24 hours in an atmosphere of a temperature of 530 ° C., a steam partial pressure of 0.08 MPa, and a nitrogen partial pressure of 0.02 MPa.
- Dimethyl ether was mixed at a flow rate of 1272 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube, and contacted with the catalyst at a temperature of 530 ° C. and normal pressure.
- the weight-based space velocity (WHS V) which is the ratio of the raw material dimethyl ether (DME) supply to the catalyst amount, was 9.6 g—DME / (g—zeolite time).
- Dimethyl ether and nitrogen were supplied until the conversion rate of dimethyl ether was 5% or less.
- Air was mixed at a flow rate of 143 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to burn the carbonaceous material on the catalyst used in Comparative Example B1 at a temperature of 550 ° C. and normal pressure. Thereafter, using this catalyst, a catalyst performance test was conducted in an isothermal reactor in the same manner as in Comparative Example B1.
- Table 3 shows the relative catalyst life of Comparative Example B2 relative to Comparative Example B1, where the catalyst life of Comparative Example B1 is 100.
- Catalyst D was subjected to steam treatment for 24 hours in an atmosphere of a temperature of 530 ° C., a steam partial pressure of 0.08 MPa, and a nitrogen partial pressure of 0.02 MPa.
- Air was mixed at a flow rate of 143 Ncm 3 / hour and water vapor at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to burn the carbonaceous matter on the catalyst used in Example B1 at a temperature of 550 ° C. and normal pressure.
- Table 3 shows the relative catalyst life of Example B2 with respect to Example B1 with the catalyst life of Example B1 being 100.
- Catalyst E was steamed for 24 hours at a temperature of 530 ° C and a steam partial pressure of 0.08 MPa. Using this steam-treated catalyst E, a catalyst performance test was conducted in an isothermal reactor in the same manner as in Comparative Example B1.
- Air was mixed at a flow rate of 143 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to burn the carbonaceous material on the catalyst used in Comparative Example B3 at a temperature of 550 ° C. and normal pressure.
- Table 3 shows the relative catalyst life of Comparative Example B4 relative to Comparative Example B3, where the catalyst life of Comparative Example B3 is 100.
- Example B3 Mix air at a flow rate of 143 Ncm 3 / hour and water vapor at 1272 Ncm 3 / hour.
- the carbonaceous matter on the catalyst used in Example B3 was burned at a temperature of 550 ° C. and normal pressure.
- Table 3 shows the relative catalyst life of Example B4 with respect to Example B3, assuming that the catalyst life of Example B3 is 100.
- Catalyst H was steamed for 24 hours in an atmosphere of a temperature of 530 ° C., a steam partial pressure of 0.08 MPa, and a nitrogen partial pressure of 0.02 MPa. Using this catalyst H subjected to the steam treatment, a catalyst performance test was conducted in an isothermal reactor in the same manner as in Comparative Example B1.
- Air was mixed at a flow rate of 143 Ncm 3 / hour and nitrogen at a flow rate of 1272 Ncm 3 / hour and sent to the reaction tube to burn the carbonaceous matter on the catalyst used in Comparative Example B5 at a temperature of 550 ° C. and normal pressure. Thereafter, using this catalyst, a catalyst performance test was conducted in an isothermal reactor in the same manner as in Comparative Example B1.
- Table 3 shows the relative catalyst life of Comparative Example B6 relative to Comparative Example B5, where the catalyst life of Comparative Example B5 is 100.
- Catalyst H was steamed for 24 hours in an atmosphere of a temperature of 530 ° C, a partial pressure of water vapor of 0.08 MPa, and a partial pressure of nitrogen of 0.02 MPa. Using this catalyst H subjected to the steam treatment, a catalyst performance test was conducted in an isothermal reactor in the same manner as in Comparative Example B1.
- Table 3 shows the relative catalyst life of Comparative Example B8 relative to Comparative Example B7, where the catalyst life of Comparative Example B7 is 100.
- Example Bl and B2 when the catalyst D was steam-treated and used for the synthesis reaction from dimethyl ether to lower hydrocarbons, this catalyst was regenerated in an air / steam stream. It was found that the catalyst life was improved.
- Catalyst D consisting of aluminum oxide and / or hydroxide and MFI structure zeolite
- catalyst E consisting of aluminum oxide and / or hydroxide, calcium carbonate and MFI structure zeolite
- catalyst D composed of an oxide and / or hydroxide of aluminum and MFI structure zeolite
- catalyst E composed of an oxide and / or hydroxide of aluminum, carbonate, ruthenium and MFI structure zeolite.
- it can be said that it is effective to coexist air and water vapor during the catalyst regeneration process. This is thought to be due to the fact that the catalyst life is improved by the action of water vapor on the oxide and / or hydroxide of aluminum.
- the zeolite catalyst containing an alkaline earth metal compound of the present invention and a method for preparing the catalyst include a gasoline synthesis reaction (MTG reaction) using methanol as a raw material, olefin cracking, fluid catalytic cracking (FCC), hydrodewaxing. It can also be applied to processes such as paraffin isomerization, aromatic hydrocarbon production, alkylation of aromatic compounds, oxidation reactions using hydrogen peroxide, and ethanolamine production.
- MMG reaction gasoline synthesis reaction
- FCC fluid catalytic cracking
- the method for regenerating an MFI structure zeolite catalyst of the present invention can also be applied to a catalyst regeneration step in a process such as gasoline synthesis reaction (MTG reaction) or cracking using methanol as a raw material.
- MFG reaction gasoline synthesis reaction
- methanol methanol
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| EP07806243.7A EP2072126A4 (en) | 2006-08-30 | 2007-08-29 | ZEOLITHIC CATALYST CONTAINING ALKALINE-EARTH METAL COMPOUND, PREPARATION METHOD AND RELATIVE REGENERATION METHOD, AND PROCESS FOR PRODUCING LOWER HYDROCARBONS |
| CN2007800303784A CN101505868B (zh) | 2006-08-30 | 2007-08-29 | 含有碱土金属化合物的沸石催化剂及其制备方法和再生方法、以及低级烃的制备方法 |
| KR1020097002924A KR101354667B1 (ko) | 2006-08-30 | 2007-08-29 | 알칼리토류 금속 화합물 함유 제올라이트 및 그 조제방법과재생방법 및 저급 탄화수소의 제조방법 |
| US12/377,036 US20100168492A1 (en) | 2006-08-30 | 2007-08-29 | Alkaline earth metal compound-containing zeolite catalyst, preparation method and regeneration method thereof, and method for producing lower hydrocarbon |
| US13/654,787 US8673803B2 (en) | 2006-08-30 | 2012-10-18 | Alkaline-earth metal compound-containing zeolite catalyst, method for preparing same, method for regenerating same, and method for producing lower hydrocarbons |
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| JP2006262554A JP2008080238A (ja) | 2006-09-27 | 2006-09-27 | Mfi構造ゼオライト触媒の再生方法 |
| JP2006266044A JP2008080301A (ja) | 2006-08-30 | 2006-09-28 | アルカリ土類金属化合物含有ゼオライト触媒およびその調製方法、並びに、低級炭化水素の製造方法 |
| JP2006-266044 | 2006-09-28 |
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| US13/654,787 Division US8673803B2 (en) | 2006-08-30 | 2012-10-18 | Alkaline-earth metal compound-containing zeolite catalyst, method for preparing same, method for regenerating same, and method for producing lower hydrocarbons |
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| EP2446964A4 (en) * | 2009-06-22 | 2015-04-29 | Jgc Corp | CATALYST FOR PRODUCING LOW OLEFINS AND METHOD FOR PRODUCING LOW OLEFINS THEREWITH |
| JP2015526401A (ja) * | 2012-06-29 | 2015-09-10 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 酸素含有物質からオレフィンへの転化のための方法 |
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| EA019862B1 (ru) * | 2009-07-30 | 2014-06-30 | Мицубиси Кемикал Корпорейшн | Способ получения пропилена и катализатор получения пропилена |
| US20110230333A1 (en) * | 2010-03-16 | 2011-09-22 | Uop Llc | Olefin Cracking Catalyst and Manufacturing Process |
| US20140005455A1 (en) * | 2012-06-29 | 2014-01-02 | Basf Se | Process for the conversion of oxygenates to olefins |
| CN106833730B (zh) * | 2017-01-20 | 2018-08-31 | 河北玺尧新能源科技有限公司 | 一种以石油醚和甲醇为原料制备汽油的方法 |
| CN106669791B (zh) * | 2017-01-20 | 2019-08-27 | 河北玺尧新能源科技有限公司 | 一种改性zsm-5分子筛催化剂及其制备方法和应用 |
| CN109575978B (zh) * | 2017-09-28 | 2021-01-08 | 中国石油化工股份有限公司 | 一种生物油脂的加工方法 |
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- 2007-08-29 CN CN2007800303784A patent/CN101505868B/zh active Active
- 2007-08-29 WO PCT/JP2007/066766 patent/WO2008026638A1/ja not_active Ceased
- 2007-08-29 KR KR1020097002924A patent/KR101354667B1/ko active Active
- 2007-08-29 EP EP07806243.7A patent/EP2072126A4/en not_active Withdrawn
- 2007-08-29 US US12/377,036 patent/US20100168492A1/en not_active Abandoned
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2446964A4 (en) * | 2009-06-22 | 2015-04-29 | Jgc Corp | CATALYST FOR PRODUCING LOW OLEFINS AND METHOD FOR PRODUCING LOW OLEFINS THEREWITH |
| JP2015526401A (ja) * | 2012-06-29 | 2015-09-10 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 酸素含有物質からオレフィンへの転化のための方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI406707B (zh) | 2013-09-01 |
| KR101354667B1 (ko) | 2014-02-04 |
| TW200817088A (en) | 2008-04-16 |
| US20130045861A1 (en) | 2013-02-21 |
| US8673803B2 (en) | 2014-03-18 |
| CN101505868B (zh) | 2012-05-23 |
| EP2072126A4 (en) | 2014-08-20 |
| US20100168492A1 (en) | 2010-07-01 |
| CN101505868A (zh) | 2009-08-12 |
| EP2072126A1 (en) | 2009-06-24 |
| KR20090049585A (ko) | 2009-05-18 |
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