WO2006093058A1 - オレフィン類の製造方法 - Google Patents
オレフィン類の製造方法 Download PDFInfo
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- WO2006093058A1 WO2006093058A1 PCT/JP2006/303493 JP2006303493W WO2006093058A1 WO 2006093058 A1 WO2006093058 A1 WO 2006093058A1 JP 2006303493 W JP2006303493 W JP 2006303493W WO 2006093058 A1 WO2006093058 A1 WO 2006093058A1
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- butene
- reaction
- propylene
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C6/00—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions
- C07C6/02—Metathesis reactions at an unsaturated carbon-to-carbon bond
- C07C6/04—Metathesis reactions at an unsaturated carbon-to-carbon bond at a carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/06—Propene
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
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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
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/24—Chromium, molybdenum or tungsten
- C07C2523/30—Tungsten
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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 relates to a method for producing olefins by a metathesis reaction in which the reactivity of a catalyst is improved by coexisting hydrogen gas.
- the metathesis reaction of olefins was found to proceed without catalyst at a high temperature of 725 ° C in 1931.
- the industrial value was recognized for metals such as molybdenum, tungsten and rhenium.
- a catalyst in which an oxide is supported on a high surface area support has been discovered.
- the first example of a metathesis reaction using a catalyst was developed by Phillips in 1964 using a catalyst in which molybdenum oxide is supported on ⁇ -alumina to obtain ethylene and 2-butene by a metathesis reaction between propylene. It was done.
- Non-patent document 1 On page 28, page 117 (1985) (Non-patent document 1), the metathesis reaction between ethylene and 2-butene is carried out at 330 ° C using a fixed bed flow apparatus using only a silica-supported acid-tungsten catalyst. The conversion rate of butene and butene is only 31%, whereas it is reported that the conversion rate increases to 67% when magnesium oxide is used in combination as a cocatalyst. [0005] Furthermore, in US Pat. No. 4,754,098 (Patent Document 2), in the same metathesis reaction at 330 ° C., when a catalyst in which magnesium oxide is supported on ⁇ -alumina is used, the conversion rate of butene is improved to 75%. However, in US Pat. No.
- Patent Document 3 when a co-catalyst with magnesium oxide and lithium hydroxide supported on ⁇ -alumina is used, butene can be converted even at a lower temperature of 270 ° C. It has been reported that the yield rate can be maintained at 74%. In fact, the industrial process requires equipment such as a heating furnace to achieve a reaction temperature of 270 ° C, and a temperature that allows simpler steam heating, for example, a reaction temperature up to about 200 ° C. It is desirable to reduce this.
- a low-temperature reaction catalyst there can be mentioned a catalyst in which yttrium oxide is supported on ⁇ -alumina by IFP (Anstitue Francais du Petrol).
- IFP Anstitue Francais du Petrol
- this catalyst uses a mixture of liquid ethylene and 2-butene as a raw material under a reaction temperature near room temperature, that is, under pressurized conditions. Metathesis reaction can proceed.
- the liquefied raw materials and reaction products are severely deteriorated in catalytic activity as compared with gas phase reactions in which the diffusibility in the catalyst pores is low.
- Patent Document 1 US Patent No. 4,575,575
- Patent Document 2 U.S. Pat.No. 4,754,098
- Patent Document 3 US Patent 4,884,760
- Patent Document 4 US Patent 4,795,734
- Non-Patent Document 1 Journal of Molecular Catalysis 28 ⁇ 117 pages (1985) Disclosure of the Invention
- the present invention solves the above problems in the conventional method, improves the reactivity of the catalyst by coexisting hydrogen gas, and produces olefins by a metathesis reaction in a practical low temperature range. It aims to provide a method. Means for solving the problem
- the present invention uses a catalyst containing at least one metal element among tungsten, molybdenum, rhenium, niobium, tantalum, vanadium, ruthenium, rhodium, iridium, osmium, nickel, and the same or different types of olefins.
- olefins can be produced with high yield and selectivity by a metathesis reaction at a low reaction temperature that does not require special equipment such as a heating furnace, and further contains butadiene.
- olefins can be produced with significant safety, process and economic advantages.
- the metathesis catalyst used in the present invention contains at least one known metal element such as tungsten, molybdenum, rhenium, -ob, tantalum, vanadium, ruthenium, rhodium, iridium, osmium, nickel, and the like. Among them, tungsten, molybdenum and rhenium are high, and tungsten is particularly preferable among them.
- the structure of the catalyst may be a single element in the solid state composed of oxides, sulfides, hydroxides, etc. of each metal, or supports the oxides, sulfides, hydroxides, etc. of these metals.
- Toyota may be supported on an inorganic compound having a high surface area.
- the catalyst when used in a fixed bed flow reaction, it is preferably in the form of an oxide because it is regenerated by calcination with air after the activity deterioration.
- any one having no acidity can be used. More specifically, preferred examples include silica, ⁇ -alumina, titer, and the like, which are preferable for a carrier having a surface area of 10 m 2 / g or more. Since silica has a particularly high surface area, silica is selected as a suitable carrier. In this case, the amount of the metal supported on the carrier is preferably in the range of 0.01% to 50%, more preferably in the range of 0.1% to 20% in terms of oxide.
- the method of supporting an oxide on a carrier may be any of the known methods.
- metal nitrates hydroxides, tungsten, molybdenum, rhenium, the polyacid, isopolyacid.
- Ammonium salts of polyacids and ammonium salts of isopolyacids are used as starting materials, and a carrier is impregnated in these aqueous solutions or evaporated to dryness, followed by firing at a temperature of 300 ° C or higher in an air atmosphere. it can.
- a hydroxide obtained by neutralizing a corresponding metal salt with a base by a known method may be calcined to obtain a carrier as an oxide. .
- the carrier is obtained from the corresponding metal salt
- a coprecipitation method in which the metal salt serving as a catalyst is allowed to coexist and the carrier synthesis and the metal loading are simultaneously performed can be employed.
- the shape of the carrier is not particularly limited and may be spherical, cylindrical, extruded, or crushed, and the particle size is in the range of 0.01 mm to 100 mm. It may be selected according to the size.
- organic molecules called ligands were bound. It may be a complex catalyst. Also, in order to facilitate the collection of these, it may be supported on a carrier.
- the cocatalyst used in the present invention includes la group (alkali metal), Ila group (alkaline earth metal), lib group,
- the metal compound used as these cocatalysts may be a solid state simple substance having a composition such as oxide, hydroxide, nitrate, acetate, etc., and these metal compounds further contain other metal compounds. It may be a composite oxide such as a hydrated talcite in which aluminum and magnesium are layered as an oxide, or a solid solution of acid aluminum and acid magnesium. Alternatively, these metal oxides, composite oxides, hydroxides, nitrates, acetates, and the like may be supported on an inorganic compound having a high surface area called a carrier.
- the carrier Since the acid nature of the carrier causes undesirable side reactions such as oligomerization of olefin, it carries metal elements of la group (alkali metal), Ila group (alkaline earth metal), lib group, and Ilia group. Any one can be used as long as it does not have acidity. More specifically, carriers with a surface area of 10 m 2 / g or more are preferred. ⁇ -alumina, zircoure, titania, etc. are preferred! / Examples include high surface area! Therefore, magnesium oxide itself can be used as a carrier. In particular, ⁇ -alumina is a preferred carrier because of its chemical stability.
- the amount of the metal supported on the carrier is preferably in the range of 0.01% to 50% in terms of oxide, and more preferably in the range of 0.1% to 20%.
- a commercially available carrier can be used as it is.
- a carrier obtained by basifying a corresponding metal salt by a known method may be calcined to obtain a carrier as an oxide.
- the oxide can be supported on the carrier by any of the known methods.
- the carrier is contained in an aqueous solution of metal nitrate or hydroxide or an aqueous suspension of acid. It can be obtained by pickling or evaporating to dryness and firing at a temperature of 300 ° C or higher in an air atmosphere.
- the carrier there are no particular restrictions on the shape of the carrier, and it can be spherical, cylindrical, extruded, or crushed, and its particle size is 0. Olmn! It should be selected in the range of ⁇ 100mm according to the size of the reactor.
- the amount of cocatalyst with respect to the catalyst cannot be increased by any amount between 0.1 and 20, but if the amount is too small, the effect of hydrogenation will not be exhibited, and if the amount is too large, the proportion of the catalyst will decrease. And the activity with respect to the combined amount of the co-catalyst is not preferable.
- the catalyst and the cocatalyst may be physically mixed and filled as described in Jounal of Molecular Catalysis 28-117 (1985). However, the cocatalyst and the catalyst may be charged in this order from the direction closer to the raw material supply direction. Furthermore, the method which combined these etc. can also be mentioned.
- Hydrogen to be added to the reaction is usually continuously supplied in a gaseous state, but is not particularly limited to this method. After adding the hydrogen gas at the start of the reaction, the supply during the reaction is stopped for a certain period of time. It may be intermittently supplied again later, or in the case of a liquid phase reaction, hydrogen gas may be dissolved in a solvent and supplied. In the recycling process, hydrogen gas recovered from the top of the column may be supplied together with the light boiling fraction.
- the pressure of hydrogen to be added is generally the same as the pressure of the reactor. Change according to the supply method! ,.
- the amount of hydrogen gas to be added is a force that is a ratio of 0.1 to 80 vol%, preferably O.2 to 50 vol% of the total gas when the raw material supplied to the reactor is converted to gas. If the amount is too small, the effect of addition is not manifested. If the amount is too large, the partial pressure of the raw olefin is lowered or the hydrogenation reaction of the olefin is not preferable.
- the structure of the olefins used in the metathesis reaction shown in the present invention is not particularly limited, but the structure is applied to lower olefins when used for the purpose of improving the olefin fin balance of naphtha crackers.
- olefins that can be used as raw materials and the resulting olefins are: ethylene and 2-butene to propylene, ethylene and 2-pentene to propylene and 1-butene, ethylene and 2-hexene to propylene and 1 pentene.
- Ethylene and 2-methyl-2-butene, propylene and isobutene, ethylene and 4-methyl 1-pentene, and force can also include propylene and 3-methyl 1-butene.
- the reverse reaction of is also effective.
- reaction raw materials are preferably composed only of olefin. However, it does not matter if they contain alkanes such as methane, ethane, propane, n-butane, isobutane, pentane, and hexane. Terminal olefins such as 1-butene, 1-pentene, 1-hexene and the like are isomerized to internal olefins by a basic cocatalyst, and may be contained in any amount. Isobutene that coexists when propylene is obtained from ethylene and 2-butene reacts with the produced propylene to give 2-methyl-2-butene, which is preferable in terms of yield, but inhibits the reaction itself. So, it can be used with any amount!
- the metathesis catalyst used in the present invention removes impurities in these raw materials because the activity is remarkably impaired by moisture, carbon dioxide, mercapto compound, alcohol and carbo-louis compound, as in the known art. There is a need. These removal methods may be any known methods such as distillation, adsorption, extraction, and washing.
- the amount of olefin used is not particularly limited, but when one is ethylene, it is preferably excessive.
- the amount ratio of ethylene to 2-butene is preferably 0.1 to 50, more preferably 0.5 to 5 Degree. If the amount ratio of ethylene is small, undesirable reactions between butenes occur simultaneously, and if the amount ratio is too high, the energy for recovering unreacted ethylene increases and the reactor itself becomes large.
- all of the olefins having a large quantity ratio may be collected at the same time, or in addition to the reactor inlet, a feed port may be provided in the middle stage of the reactor, etc. .
- the reaction temperature is not particularly limited in the present invention, but is preferably in the range of 100 to 500 ° C, more preferably 130 to 350 ° C. If the reaction temperature is too low, the reaction rate decreases and the productivity of the reaction product decreases. On the other hand, if the reaction temperature is too high, unfavorable side reactions will progress, which will increase the number of by-products and promote catalyst deterioration, which is not economical.
- the reaction can be carried out in a deviated state of reduced pressure, increased pressure and normal pressure. From the viewpoint of reaction efficiency (reaction efficiency per unit volume), it is not preferable to carry out at a very low pressure. Usually, a preferable pressure range is 0.1 to 200 atm, and more preferably 0.5 to 100 atm. Of course, the present invention is not limited to these pressure ranges.
- the amount of catalyst to be used is not particularly limited.
- the supply amount (weight) of raw material per hour does not include the cocatalyst.
- the value divided by the weight of the catalyst containing tungsten alone, ie, WHS V is preferably in the range of 1 to 2000 Zh, more preferably in the range of 2 to: LOOOZh. If the WHSV is too low, the desired olefin produced will cause a sequential metathesis reaction, giving a preferable by-product, and if the WHS V is too high, a sufficient reaction conversion rate cannot be obtained.
- a solvent or gas inert to the catalyst and the reaction reagent into the reaction system and dilute the reaction system.
- the aforementioned alkanes such as methane, ethane, propane and butane, and inert gases such as nitrogen and helium can be used as diluents.
- the method can be carried out in any of batch, semi-batch and continuous flow methods. Further, it can be carried out in any form of a liquid phase, a gas phase, and a gas-liquid mixed phase. Preferably a view of reaction efficiency From the point of view, it is recommended to carry out by gas phase reaction.
- Various methods such as a fixed bed, a fluidized bed, a suspension bed, and a shelf fixed bed can be adopted as the catalyst filling method, and any method can be used.
- the reaction product can be separated and recovered from the catalyst or the like by a known separation method.
- the target product olefin is separated from the reaction mixture by known methods such as distillation, extraction and adsorption. Unreacted raw materials can be recovered and recycled to the reaction system for reuse.
- the catalyst and cocatalyst it is desirable to dehydrate the catalyst and cocatalyst using a known method.
- the fixed bed reaction method it may be held at a temperature of 300 ° C or higher for 10 minutes or longer while an inert gas such as nitrogen or helium is circulated through the reactor filled with the catalyst and the cocatalyst.
- an inert gas such as nitrogen or helium
- a reduction treatment is performed by flowing a reducing gas such as carbon monoxide or hydrogen at a temperature of 300 ° C or higher for 10 minutes or longer.
- the inert gas may be circulated again at a temperature of 300 ° C or higher for 10 minutes or longer to set the predetermined reaction temperature. Since this reaction is characterized by the coexistence of hydrogen, if hydrogen is used for the reduction treatment, it may remain.
- regeneration can be performed to recover the catalyst activity.
- olefins adsorbed with nitrogen gas are purged and then oxidized with air or nitrogen-diluted air at a temperature of 300 ° C or higher. If the metal is tungsten or molybdenum, hydrogen or monoxide is further added. It can be reused by reducing it with a reducing gas such as carbon.
- Ammonium metatungstate (Aldrich) 0.83 g was dissolved in 100 ml of distilled water, and silica gel Q-10 (surface area 300 m 2 / g, pore volume lml / g, 150-5 by Fuji Silysia) 00 ⁇ m) 5 g was suspended and stirred at room temperature for 30 minutes, and then water was removed by an evaporator. The resulting white solid was calcined at 550 ° C for 6 hours in an air atmosphere. This catalyst is called WQ-10.
- a normal pressure nitrogen gas of 50 ml / min was circulated from the upper part of the reactor, and the gas from the lower part was allowed to flow from the lower part to the upper part of the butene purification tower. The temperature was raised and held for 1 hour. Next, a mixed gas in which 50 ml Zmin of normal pressure nitrogen gas was added to 50 ml Zmin of normal pressure was circulated at the same temperature for 30 minutes. The butene purification tower was lowered to 50 ° C and the reactor was lowered to 250 ° C while flowing 50 mlZmin of atmospheric nitrogen gas again.
- Trans-butene (purity 99%, manufactured by Takachiho Chemical Industry) gas distilled onto ⁇ -alumina (NKHD-32, manufactured by Sumitomo Chemical Co., Ltd.) before use was added at a normal pressure of 2.3 mlZmin.
- the refined trans-2-butene obtained from the lower part of the purification tower is circulated and united with ethylene supplied at a rate of 6.1 mlZmin at normal pressure and hydrogen supplied at a rate of 20 mlZmin at normal pressure.
- Reactor upper force was supplied in gaseous form.
- the mixed gas obtained from the lower part of the reactor was analyzed online by gas chromatography.
- the dredging rate was 75%.
- the propylene selectivity based on butene was 97%, and a small amount of pentene was produced.
- Propane is produced at the same time as propylene.
- the reaction was carried out in the same manner as in the method described in Example 1, except that the amount of atmospheric hydrogen gas supplied to the reactor was 5 ml.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%.
- propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- bread was produced at the same time as propylene, and the ratio of propane to propylene was 0.0094. Furthermore, after this, the reaction rate continued for 12 hours.
- the reaction was performed in the same manner as in Example 1 except that the amount of atmospheric hydrogen gas supplied to the reactor was 2 ml.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%.
- propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- bread was produced at the same time as propylene, and the ratio of propane to propylene was 0.0063. Furthermore, after this, the reaction rate continued for 12 hours.
- Example 3 In the method described in Example 3, the reaction was performed in the same manner except that the temperature of the reactor was 200 ° C. The butene conversion obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%. At this time, the propylene selectivity based on butene was 98%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.0032. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- Example 5 In the method described in Example 5, the reaction was performed in the same manner except that the temperature of the reactor was 200 ° C. The butene conversion obtained by analyzing the outlet gas 3 hours after the start of the reaction was 78%. At this time, the propylene selectivity based on butene was 98%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.0069. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- Example 3 In the method described in Example 3, the reaction was carried out in the same manner except that the type of cocatalyst charged in the reactor was changed to calcium oxide (Wako Pure Chemical, classification to 150 to 500 / zm after compression molding). Went. The butene conversion obtained by analyzing the outlet gas 1 hour after the start of the reaction was 78%. The propylene selectivity based on butene at this time is 98%, and a small amount of other Penten was generated. Propane was produced at the same time as propylene, and the propan / propylene ratio was 0.020.
- the type of cocatalyst charged in the reactor was changed to calcium oxide (Wako Pure Chemical, classification to 150 to 500 / zm after compression molding). Went.
- the butene conversion obtained by analyzing the outlet gas 1 hour after the start of the reaction was 78%.
- the propylene selectivity based on butene at this time is 98%, and a small amount of other Penten was generated. Propane was produced
- Example 7 In the method described in Example 7, the reaction was performed in the same manner except that the temperature of the reactor was 200 ° C. The butene conversion obtained by analyzing the outlet gas 1 hour after the start of the reaction was 76%. At this time, the propylene selectivity based on butene was 98%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.0093.
- Example 3 According to the method described in Example 3, the type of cocatalyst charged into the reactor was changed to zinc oxide (Wako Pure Chemicals, after compression molding, classified to 150 to 500 / ⁇ ⁇ ), and further reacted The reaction was carried out in the same manner except that the temperature of the vessel was 200 ° C. The butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 32%. At this time, propylene selectivity based on butene was 90%, and a small amount of pentene was produced. In addition, bread was produced at the same time as propylene, and the ratio of propane to propylene was 0.0013.
- ⁇ -alumina (NKHD-32, manufactured by Sumitomo Chemical Co., Ltd., surface area 250 m 2 / g) was suspended in a solution of 0.40 g of calcium hydroxide (Wako Pure Chemical Industries) dissolved in 100 ml of distilled water. After turbidity and stirring at room temperature for 30 minutes, water was distilled off with an evaporator. The resulting white solid was calcined at 550 ° C. for 6 hours in an air atmosphere. Of the obtained ⁇ -alumina-supported CaO, 0.3 g was physically mixed with O.lg WQ-10 and charged into the center of a SUS reactor with an outer diameter of 10 mm and a length of 30 cm. A reactor filled with balls was used.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 74%.
- the propylene selectivity based on butene was 97%, and a small amount of pentene was produced.
- Propane was produced simultaneously with propylene, and the ratio of propane to propylene was 0.0018. In addition, there was no decrease in the force conversion rate that continued the reaction for 12 hours.
- a cocatalyst was prepared in the same manner as in Example 11 except that the amount of calcium hydroxide supported on ⁇ -alumina was 0.2 g. Otherwise, the reaction was performed in the same manner as described in Example 4. Went. The butene conversion obtained by analyzing the outlet gas 3 hours after the start of the reaction was 77%. The butene-based propylene selectivity at this time was 97%, An amount of pentene was produced. Propane was produced at the same time as propylene, and the bread / propylene ratio was 0.0025. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- a cocatalyst was prepared in the same manner as in Example 11 except that the amount of calcium hydroxide supported on ⁇ -alumina was O.lg. Reaction was performed. The butene conversion obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%. At this time, the propylene selectivity based on butene was 96%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.0022. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- Example 11 a cocatalyst was prepared in the same manner except that the compound supported on ⁇ -alumina was 0.55 g of magnesium nitrate (Wako Pure Chemical Industries). The reaction was carried out in the same manner. The butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 16%. At this time, propylene selectivity based on butene was 87%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0036. Furthermore, after that, the reaction rate continued for 12 hours, and the power conversion rate did not decrease.
- magnesium nitrate Wako Pure Chemical Industries
- a cocatalyst was prepared in the same manner as in Example 11 except that the compound supported on ⁇ -alumina was 0.35 g of zinc nitrate (Wako Pure Chemical Industries). Otherwise, the same method as described in Example 4 was used. The reaction was carried out. The butene conversion obtained by analyzing the outlet gas 3 hours after the start of the reaction was 66%. At this time, the propylene selectivity based on butene was 94%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0016. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- a cocatalyst was prepared in the same manner as in Example 11 except that the compound supported on ⁇ -alumina was changed to 0.35 g of zinc nitrate (Wako Pure Chemical) and 0.038 g of sodium hydroxide (Wako Pure Chemical). Otherwise, the reaction was carried out in the same manner as described in Example 4.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 76%.
- the propylene selectivity based on butene was 95%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0021. Sarasako, who continued to react for 12 hours thereafter, showed no decrease in power conversion rate
- a cocatalyst was prepared in the same manner as in Example 11 except that the compound supported on ⁇ -alumina was 0.076 g of sodium hydroxide (Wako Pure Chemical Industries). Otherwise, the same procedure as described in Example 4 was performed. The reaction was carried out by the method. The butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 75%. At this time, propylene selectivity based on butene was 98%, and a small amount of pentene was produced. Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0033.
- a cocatalyst was prepared in the same manner as in Example 11 except that 0.038 g of sodium hydroxide (Wako Pure Chemical Industries, Ltd.) was used as the compound supported on ⁇ -alumina.
- the reaction was carried out by the method.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 76%.
- propylene selectivity based on butene was 97%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.001. Furthermore, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- a cocatalyst was prepared in the same manner as in Example 18 except that the reaction temperature was 200 ° C. Otherwise, the reaction was performed in the same manner as described in Example 4.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 78%.
- the propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00081. Furthermore, the reaction continued for 12 hours after this, but there was no decline in the conversion rate.
- Example 20
- Example 18 a cocatalyst was prepared in the same manner except that the reaction temperature was 175 ° C. Otherwise, the reaction was performed in the same manner as described in Example 4. The butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 74%. At this time, the propylene selectivity based on butene was 97%, and a small amount of pentene was produced. Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00053. Further, the reaction was continued for 12 hours thereafter, but no reduction in conversion was observed.
- Example 21
- Example 18 The cocatalyst was prepared in the same manner except that the reaction temperature was 150 ° C., and the reaction was performed in the same manner as described in Example 4 except that.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 30%.
- the propylene selectivity based on butene was 92%, and a small amount of pentene was produced.
- Propane is produced simultaneously with lopyrene, and the ratio of propane to propylene was 0.0029.
- a cocatalyst was prepared in the same manner as in Example 11 except that 0.019 g of sodium hydroxide (Wako Pure Chemical Industries, Ltd.) was used as the compound supported on ⁇ -alumina.
- the reaction was carried out by the method.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 78%.
- propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0067. Furthermore, after that, the reaction rate continued for 12 hours, and the power conversion rate did not decrease.
- Example 19 in place of ⁇ -alumina, the gel hydroxide obtained by adding zirconium nitrate to ammonia water was washed with water and dried at 100 ° C. A cocatalyst was prepared in the same manner except that zirconium was used, and the reaction was carried out in the same manner as described in Example 4 except that the obtained zirconium-supported Na 0 was used as a cocatalyst.
- a cocatalyst was prepared in the same manner as in Example 23 except that the reaction temperature was 175 ° C. Otherwise, the reaction was performed in the same manner as described in Example 4.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 58%.
- the propylene selectivity based on butene was 94%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0015.
- a cocatalyst was prepared in the same manner as in Example 11 except that the compound supported on ⁇ -alumina was 0.064 g of potassium nitrate (Wako Pure Chemical Industries). Otherwise, the same method as described in Example 3 was used. The reaction was carried out. The butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 76%. At this time, the propylene selectivity based on butene was 98%, and a small amount of pentene was produced. Propane was produced simultaneously with propylene, and the ratio of propane to propylene was 0.0020. Furthermore, after that, the reaction rate continued for 12 hours, and the power conversion rate did not decrease.
- a cocatalyst was prepared in the same manner as in Example 25 except that the amount of the compound supported on ⁇ -alumina was changed to 0.128 g. Otherwise, the reaction was performed in the same manner as described in Example 3. .
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 77%.
- the propylene selectivity based on butene was 96%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the propane / Z propylene ratio was 0.00057. Furthermore, after this, the reaction rate continued for 12 hours.
- Example 11 a cocatalyst was prepared in the same manner except that 0.041 g of cesium nitrate (Wako Pure Chemical Industries) was used as the compound supported on ⁇ -alumina.
- the reaction was performed in the same way. It is obtained by analyzing the outlet gas 3 hours after the start of the reaction.
- the butene rolling rate was 76%.
- the propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00095. Furthermore, there was no decrease in the force conversion rate that continued to react for 12 hours.
- a cocatalyst was prepared in the same manner as in Example 27 except that the amount of the compound supported on ⁇ -alumina was changed to 0.082 g. Otherwise, the reaction was performed in the same manner as described in Example 4. .
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%.
- the propylene selectivity based on butene was 97%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0013. Furthermore, after this, the reaction rate continued for 12 hours.
- Example 4 the reaction was performed in the same manner except that the reaction raw material was changed from trans-2-butene to 1-butene (manufactured by Takachiho Chemical Co., Ltd., purity 99.5%). Went.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 76%.
- the propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- Propane was produced simultaneously with propylene, and the ratio of propane to propylene was 0.0041. In addition, no decrease in the force conversion rate was observed after 12 hours of reaction.
- [Table 6 Propylene synthesis reaction using various butenes, WQ _ 1 0 at 2 0 0 and hydrolyl site
- the reaction was carried out by the method shown in Example 3.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 75%.
- the propylene selectivity based on butene was 98%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the propane / Z propylene ratio was 0.0063.
- Three hours after the start of the reaction the supply of hydrogen to the reactor was stopped, and the reaction was continued as it was.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the stoppage decreased to 48%.
- the butene conversion rate obtained by analyzing the outlet gas 5 hours after stopping the supply of hydrogen gas remained at 48%.
- the supply of hydrogen gas to the reactor was started again and the reaction was continued.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the resumption of hydrogen gas supply improved to 72%. Furthermore, the butene conversion rate obtained by analyzing the outlet gas 8 hours after the resumption of hydrogen gas supply was 74%.
- Hyde mouth talcite (Kyowa Chemical Co., Kiyoward 500, 500 m) are physically mixed and packed into a SUS reactor with an outer diameter of 12 mm and a length of 40 cm.
- the butene purification tower was filled with ⁇ -alumina balls at the top and bottom.
- O.lg's Mo Q—15 with 0.3 g of Hyd mouth talcite and fill it into the center of a Sus reactor with an outer diameter of 10 mm and a length of 30 cm.
- a reactor filled with alumina balls was used.
- the reaction was performed in the same manner as in Example 3 except that the temperature of the reactor was changed to 300 ° C.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 47%.
- the propylene selectivity based on butene was 89%, and a small amount of pentene was produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.015.
- the reaction was performed in the same manner as in Example 31, except that the reaction temperature was 350 ° C.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 53%.
- the propylene selectivity based on butene was 90%, and a small amount of other pentene was produced.
- Propane was produced at the same time as propylene, and the propane-Z propylene ratio was 0.0014.
- Example 1 0.6 g of WQ-10 and 2.4 g of hydrated talcite are physically mixed, filled in the center of a SUS reactor with an outer diameter of 18 mm and a length of 400 mm, and ⁇ -aluminum on the top and bottom. A reactor filled with nabol was used. While circulating normal pressure nitrogen gas lOOml / min from the upper part of the reactor and raising the lower part of the butene purification tower to the upper part of the butene purification tower, the temperature of the reactor and the butene purification tower was raised to 500 ° C for 1 hour. Retained. Then, 100 mlZmin of atmospheric hydrogen gas was passed for 120 minutes at the same temperature. While flowing normal pressure nitrogen gas 50mlZmin and normal pressure hydrogen gas 50mlZmin, the butene purification tower was cooled to 50 ° C and the reactor was cooled to 200 ° C.
- On-line analysis was performed by gas chromatography in a state where the mixed gas, which also provides the lower force of the reactor, became normal pressure through the back pressure valve.
- Butene conversion ratio obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of trans-2-butene supplied from the composition 10 hours after the start of the reaction. was 71%.
- propylene selectivity based on butene was 90%, and small amounts of pentene and hexene were also produced.
- Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.01. Furthermore, there was no decrease in the force buten rolling rate that continued the reaction for 12 hours.
- the reaction was performed in the same manner as in Example 33, except that the temperature of the reactor was changed to 175 ° C.
- the butene conversion rate obtained by analyzing the outlet gas 10 hours after the start of the reaction was 61%.
- the propylene selectivity was 92%.
- Other small amounts of pentene and hexene were produced.
- Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.01. In addition, the force that continued to react for 12 hours after that was not observed.
- Example 35 [0081] In Example 33, the reaction was performed in the same manner except that the liquefied trans 2 butene was combined with 1. ethylene pressurized to OMPa and 1. hydrogen pressurized to OMPa. It was. The butene conversion rate obtained by analyzing the outlet gas 10 hours after the start of the reaction was 71%. The propylene selectivity was 91%. Other small amounts of pentene and hexene were produced. Propane was produced at the same time as propylene, and the propan-Z propylene ratio was 0.0026. In addition, the force that continued to react for 12 hours after that was not observed.
- Example 33 the reaction was performed in the same manner except that the liquefied trans 2 butene was combined with ethylene pressurized to 0.5 MPa and hydrogen pressurized to 0.5 MPa.
- the butene conversion rate obtained by analyzing the outlet gas 10 hours after the start of the reaction was 72%.
- the propylene selectivity was 92%.
- Other small amounts of pentene and hexene were produced.
- Propane was produced at the same time as propylene, and the ratio of propane to propylene was 0.0012.
- the force butene conversion continued for 12 hours thereafter, but no decrease in the butene conversion rate was observed.
- the propylene selectivity was 94%. Other small amounts of pentene and hexene were produced. Propane was produced at the same time as propylene, and the propane / Z propylene ratio was 0.0066. In addition, the force that continued to react for 12 hours after that showed no decline in the butene rolling rate.
- the catalyst WQ-10 described in Example 1 was physically mixed with 0.1 lg and 0.5 g of hydrated talcite, and charged in the center of a SUS reactor having an outer diameter of 10 mm and a length of 30 cm.
- the reactor was filled with ⁇ -alumina balls at the top and bottom.
- 2g of WQ-10 and 3.5g of Hyde mouth talcite are physically mixed to form a SUS reactor with an outer diameter of 12mm and a length of 40cm.
- the butene purification tower was filled with ⁇ alumina balls at the top and bottom.
- a normal pressure nitrogen gas of 50 ml / min was circulated from the upper part of the reactor, and the temperature of the reactor and the butene purification tower was raised to 550 ° C while flowing the gas from the lower part to the upper part of the butene purification tower. Hold for 1 hour.
- a mixed gas in which 50 mlZmin of normal pressure nitrogen gas was added to 50 mlZmin of normal pressure was circulated at the same temperature for 30 minutes.
- the butene purification tower was cooled to 50 ° C and the reactor was cooled to 200 ° C while flowing atmospheric nitrogen gas again at 50 ml / min.
- 1-butene (99% purity, 230 ppm of 1,3-butadiene, manufactured by Takachiho Chemical Co., Ltd.) gas distilled onto ⁇ -alumina (NKHD-32, manufactured by Sumitomo Chemical Co., Ltd.) at normal pressure It was circulated from the lower column of the butene purification tower at a rate of 8 mlZmin. The 1,3-butadiene concentration in the purified 1-butene obtained from the top was Oppm. This 1-butene containing no butadiene was combined with ethylene supplied at a rate of 12 mlZmin at normal pressure and hydrogen supplied at a rate of lmlZmin at normal pressure, and was supplied in gaseous form from the top of the reactor.
- the mixed gas obtained from the part was analyzed online by gas chromatography.
- the butene conversion rate obtained by subtracting the total amount of trans 2-butene, cis 2-butene and 1 butene in the outlet gas from the amount of 1-butene supplied from the composition 2 hours after the start of the reaction is 17.5%.
- Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00022.
- Example 38 the reaction was performed in the same manner except that the reaction temperature was 225 ° C. From the amount of 1-butene supplied from the composition 3 hours after the start of the reaction, the total amount of trans 2 butene, cis 2-butene and 1 butene in the outlet gas was added, and the butene turnover rate calculated from IV was It was 69%. The propylene selectivity was 94%. Other small amounts of pentene and hexene were produced. Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00047. Furthermore, the force that continued the reaction for 12 hours after that was a force that did not show a decline in butene rolling rate.
- the reaction was performed in the same manner as in Example 38 except that the reaction temperature was 250 ° C. From the amount of 1-butene supplied from the composition 3 hours after the start of the reaction, the total amount of trans 2 butene, cis 2-butene and 1 butene in the outlet gas was added, and the butene turnover rate calculated from IV was It was 69%. The propylene selectivity was 94%. Other small amounts of pentene and hexene were produced. Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00040. Furthermore, the force that continued the reaction for 12 hours after that was a force that did not show a decline in butene rolling rate.
- Example 42 The reaction was performed in the same manner as in Example 38 except that the adsorbent of the butene purification tower was changed to ⁇ -alumina.
- the 1-butene fed to the reactor at this time contained 230 ppm of 1,3 butagen. From the composition 3 hours after the start of the reaction, the butene conversion ratio obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied is 21%.
- Example 42 The butene conversion ratio obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied is 21%.
- the reaction was performed in the same manner as in Example 41 except that the reaction temperature was 225 ° C. From the composition 3 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 70%. The propylene selectivity was 94%. Other small amounts of pentene and hexene were produced. Propane was produced at the same time as propylene, and the ratio of propylene and Z propylene was 0.00036.
- the reaction was performed in the same manner as in Example 41 except that the reaction temperature was 250 ° C. From the composition 3 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 70%. The propylene selectivity was 94%. Other small amounts of pentene and hexene were produced.
- Example 38 The catalyst charged in the reactor in Example 38 was changed to 200 ° C in the same manner except that the catalyst charged in WQ-10, 0.1 lg and ⁇ -alumina-supported Na 0, 0.5 g prepared in Example 18 was used.
- the catalyst charged in WQ-10, 0.1 lg and ⁇ -alumina-supported Na 0, 0.5 g prepared in Example 18 was used.
- the butene conversion rate obtained by subtracting the total amount of trans 2-butene, cis 2-butene and 1 butene in the outlet gas from the amount of 1-butene supplied from the composition 3 hours after the start of the reaction was 69 %Met.
- the propylene selectivity was 93%.
- small amounts of pentene and hexene were produced.
- propylene and prop Propane / propylene ratio was 0.00021.
- Example 44 the reaction was performed in the same manner except that the adsorbent of the butene purification tower was changed to ⁇ -alumina.
- the 1-butene fed to the reactor at this time contained 230 ppm 1,3 butadiene. From the composition 3 hours after the start of the reaction, the butene conversion rate was calculated by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied. 69%.
- the propylene selectivity was 93%. Other small amounts of pentene and hexene were produced. Propane was produced simultaneously with propylene, and the propane / Z propylene ratio was 0.00019.
- the reaction was performed in the same manner as in Example 41 except that the reaction was performed at 250 ° C using a raw material in which 1,3-butadiene was mixed at a ratio of 2 g to 200 g of 1-butene.
- the 1-butene fed to the reactor at this time contained 1.04% butadiene. From the composition 10 hours after the start of the reaction, the butene conversion rate obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied was 67% Met.
- Example 48 The reaction was performed in the same manner as in Example 46 except that the reaction was performed at 275 ° C. From the composition 5 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 68%.
- Example 48 From the composition 5 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 68%.
- Example 48 The reaction was performed in the same manner as in Example 46 except that the reaction was performed at 275 ° C. From the composition 5 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 68%.
- the reaction was performed in the same manner as in Example 46, except that the reaction was performed at 300 ° C. From the composition 3 hours after the start of the reaction, the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was calculated from the amount of 1-butene supplied. The dredging rate was 68%.
- the reaction was performed in the same manner as in Example 44 except that the reaction was performed at 250 ° C using a raw material in which 1,3-butadiene was mixed at a ratio of 2 g to 200 g of 1-butene.
- 1-butene fed to the reactor contained 1.04% butadiene.
- the amount of 1-butene supplied was the sum of the transformer 2-butene, cis-2-butene and 1-butene in the outlet gas.
- the butene turnover rate after subtracting this amount was 58%. At this time, the production of propane was not recognized.
- the reaction was performed in the same manner as in Example 49, except that the reaction was performed at 275 ° C. Based on the composition of the reactor outlet when the maximum activity was reached in 15 hours from the start of the reaction, the total amount of trans 2-butene, cis 2-butene and 1-butene in the outlet gas from the amount of 1 butene supplied. The butene roll rate after subtracting was 68%. At this time, no generation of propan was observed.
- the reaction was performed in the same manner as in Example 49, except that the reaction was performed at 300 ° C. From the composition of the reactor outlet when the maximum activity was reached in 2 hours from the start of the reaction, the amount of 1-butene fed was calculated from the amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas. The butene turnover rate after subtracting the total amount was 69%. At this time, the production of propane was not recognized.
- Example 2 The procedure was the same as in Example 1, except that 2 g of WQ-10 was added in order from the bottom of the butene purification tower, and then 3.5 g of Hydokuchi talcite (Kyowa Chemical Co., Ltd., Kiyoward 500, 500 m) was charged.
- a butene purification tower was produced in the same manner as in Example 1.
- the catalyst charged in the reactor is suspended in 200 ml of an aqueous solution of WQ-10, 15 g of magnesium oxide and 80 mg of sodium hydroxide from a mixture of WQ 10 and hydrated talcite, evaporated to dryness, and calcined. (550 ° CX for 8 hours) Packing in the same way except changing to a mixture of Na OZ magnesia obtained
- a reactor was created. Next, atmospheric nitrogen gas 50ml / min is circulated from the upper part of the reactor, and the gas emitted from the lower part flows to the upper part of the lower part of the butene purification tower, while the reactor and the butene purification tower rise to 550 ° C. Warmed and held for 1 hour. Next, a mixed gas in which atmospheric pressure hydrogen gas 50 mlZmin was added to atmospheric pressure nitrogen gas 50 mlZmin was circulated at the same temperature for 30 minutes. The butene purification tower was cooled to 150 ° C and the reactor was cooled to 175 ° C while flowing atmospheric nitrogen gas 50mlZmin again.
- 1-butene (purity 99%, manufactured by Takachiho Chemical Industry) gas distilled onto ⁇ -alumina (NKHD-32, manufactured by Sumitomo Chemical Co., Ltd.) before use was passed through the butene purification tower at a rate of 12 mlZmin at normal pressure.
- Purified 1-butene which was circulated from the bottom and also obtained the top force, was combined with ethylene supplied at a rate of 18 mlZmin at normal pressure and hydrogen supplied at a rate of 1.5 mlZmin at normal pressure. Supplied in gaseous form.
- the mixed gas obtained from the lower part of the reactor was analyzed on-line by gas chromatography. Supplied from the composition 3 hours after the start of the reaction 1 —Butene conversion rate obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas was 40%.
- Example 52 the catalyst charged into the reactor was mixed with WQ-10 and Hyde mouth talcite, and 15g of WQ-10 and Hyde mouth talcite (Kyowa Chemical, Kiyoword 500). The same procedure was followed except that 80 mg of sodium hydroxide was suspended in 200 ml of aqueous solution, evaporated to dryness, and calcined (550 ° CX for 8 hours) to obtain a mixture of Na OZ hydrated talcite.
- the reaction was performed.
- the mixed gas obtained from the lower part of the reactor was subjected to online analysis by gas chromatography.
- Butene conversion ratio obtained by subtracting the total amount of trans-2-butene, cis-2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied from the composition 3 hours after the start of the reaction was 52%.
- Example 52 the catalyst charged into the reactor was prepared from a mixture of WQ-10 and hydrated talcite, WQ-10 and alumina-magnesia solid solution (Kyowa Chemical, Kiyoword 2000) 1 5g And NaOZ alumina / magnesia mixture obtained by suspending 40 mg of sodium hydroxide and sodium hydroxide in 200 ml of aqueous solution, evaporating to dryness and firing (550 ° C x 8 hours).
- the reaction was performed in the same manner outside.
- the gas mixture obtained from the lower part of the reactor was analyzed online using a gas chromatograph.
- the butene conversion rate after subtracting the total amount of trans 2-butene, cis 2-butene and 1-butene in the outlet gas from the amount of 1-butene supplied from the composition 3 hours after the start of the reaction was 58%. there were.
- Example 52 the catalyst charged into the reactor was prepared from a mixture of WQ-10 and hydrated talcite, 15 g of WQ-10 and alumina 'magnesia solid solution (Kyowa Chemical, Kiyoword 2000) and 40 mg of potassium nitrate. Is suspended in 200 ml of aqueous solution, evaporated to dryness, and calcined (550 ° C x 8 hours).
- the reaction was conducted in the same manner.
- the mixed gas obtained from the lower part of the reactor was analyzed online by gas chromatography. From the composition 3 hours after the start of the reaction, the amount of 1-butene fed was combined with the transformer 2-butene, cis-2-butene and 1-butene in the outlet gas. The butene turnover rate after subtracting the total amount was 62%.
- Example 1 after the same pretreatment, reduction, and nitrogen substitution in both the reactor and the butene purification column, ethylene and trans-2-butene were used in the same ratio as in Example 1 without passing hydrogen through the reactor. Supplied with.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 49%.
- the propylene selectivity based on butene was 91%, and a small amount of pentene was produced.
- Example 4 the reactor and butene purification tower were pretreated, reduced, and purged with nitrogen in the same manner, and then ethylene and trans-2-butene were mixed in the same proportion as in Example 1 without passing hydrogen through the reactor. Supplied with.
- the butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 1%.
- propylene selectivity based on butene was 89%, and a small amount of pentene was produced.
- Comparative Example 2 the pretreatment, reduction treatment, and nitrogen replacement were performed in the same manner for the reactor and butene purification tower, and then ethylene and trans-2-butene were mixed in the same proportion as in Example 1 without passing hydrogen through the reactor. The same operation was performed except that the reaction temperature was changed to 300 ° C. The butene conversion rate obtained by analyzing the outlet gas 3 hours after the start of the reaction was 74%. At this time, the propylene selectivity based on butene was 95%, and a small amount of pentene was produced.
- Example 31 both the reactor and the butene purification tower were pretreated, reduced, and replaced with nitrogen, and then ethylene and trans-2-butene were mixed in the same proportion as in Example 1 without passing hydrogen through the reactor. Supplied with.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 8%.
- Example 32 both the reactor and the butene purification column were pretreated, reduced, and replaced with nitrogen, and then ethylene and trans-2-butene were mixed in the same proportion as in Example 1 without passing hydrogen through the reactor. Supplied with.
- the butene conversion rate obtained by analyzing the outlet gas one hour after the start of the reaction was 22%.
- Example 33 both the reactor and the butene purification column were pretreated, reduced, and replaced with nitrogen.Then, the temperature of the butene purification tower was lowered to 50 ° C and the reactor to 200 ° C with a nitrogen flow rate of lOOmlZmin, and the reaction was performed. Ethylene and trans-2-butene were fed at the same rate as in Example 34 without passing hydrogen through the vessel. The butene conversion obtained by analyzing the outlet gas 10 hours after the start of the reaction was 7.8%.
- Example 33 the pretreatment and reduction treatment were performed in the same manner for both the reactor and the butene purification column, and then the butene purification column was cooled to 50 ° C and the reactor to 250 ° C with a nitrogen flow rate of lOOmlZmin. Ethylene and trans-2-butene were supplied at the same ratio as in Example 34 without circulating the oil. Butene conversion obtained by analyzing the outlet gas 1 hour after the start of the reaction is 71%.
- Example 38 the pretreatment and reduction treatment were performed in the same manner for both the reactor and the butene purification tower, and then the temperature of the butene purification tower was lowered to 50 ° C and the reactor to 275 ° C with a nitrogen flow rate of lOOmlZmin.
- the ethylene and 1-butene were supplied at the same ratio as in Example 38 without circulating the styrene.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 44%.
- Example 46 the reaction was carried out using butene containing 1.04% butadiene as a raw material, except that the reaction temperature was 300 ° C and hydrogen gas was not supplied to the reactor. It was. The butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 17%.
- the reaction was carried out in the same manner without supplying hydrogen gas to the reactor except that the reaction temperature was 350 ° C in Comparative Example 12.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 68%. That is, when a raw material containing 1.04% of butadiene was used, the raw material had a conversion rate of 61% at 300 ° C. as shown in Comparative Example 10 without containing butadiene.
- the reaction temperature is raised to 350 ° C, it is difficult for the conversion rate to exceed 60%.
- the butene conversion rate obtained by analyzing the outlet gas 1 hour after the start of the reaction was 75%.
- the butene conversion rate obtained by analyzing the outlet gas 5 hours after the start of the reaction was 48%. Furthermore, the reaction continued for 12 hours after this, but the change in the turnover rate was strong.
- the metathesis reaction can proceed at a lower temperature than the conventionally known reaction.
- a high reaction rate can be obtained even at a low pressure without requiring a high pressure as in the prior art.
- butene containing butadiene is used as a raw material, it has a great feature that it is less deteriorated than a conventional metathesis catalyst.
- there is responsiveness to the improvement of the reaction activity by supplying hydrogen that is, when the supply of hydrogen is temporarily interrupted and then restarted, the activity improvement effect by adding hydrogen is restored.
- Such behavior can greatly contribute to operational stability in industrial production.
- coexistence of olefin and hydrogen gas is usually a concern for the formation of paraffin, but contrary to the expectation, there is little paraffin byproduct, especially when the cocatalyst is alumina-supported sodium oxide. Can be greatly reduced.
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JP2007505905A JP4805252B2 (ja) | 2005-03-03 | 2006-02-24 | オレフィン類の製造方法 |
CN2006800069797A CN101133007B (zh) | 2005-03-03 | 2006-02-24 | 烯烃类的制造方法 |
CA002598501A CA2598501A1 (en) | 2005-03-03 | 2006-02-24 | Method of producing olefins |
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Also Published As
Publication number | Publication date |
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KR20070095408A (ko) | 2007-09-28 |
MY145180A (en) | 2011-12-30 |
US20100145126A1 (en) | 2010-06-10 |
RU2007136489A (ru) | 2009-04-10 |
TWI310030B (en) | 2009-05-21 |
US7977522B2 (en) | 2011-07-12 |
KR100912882B1 (ko) | 2009-08-20 |
EP1854776A1 (en) | 2007-11-14 |
JPWO2006093058A1 (ja) | 2008-08-07 |
JP4805252B2 (ja) | 2011-11-02 |
IL184851A0 (en) | 2007-12-03 |
CN101133007B (zh) | 2012-08-29 |
RU2367644C2 (ru) | 2009-09-20 |
CA2598501A1 (en) | 2006-09-08 |
CN101133007A (zh) | 2008-02-27 |
EP1854776A4 (en) | 2010-07-28 |
TW200635891A (en) | 2006-10-16 |
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