WO2006098421A1 - チタン含有珪素酸化物触媒の保存方法 - Google Patents
チタン含有珪素酸化物触媒の保存方法 Download PDFInfo
- Publication number
- WO2006098421A1 WO2006098421A1 PCT/JP2006/305325 JP2006305325W WO2006098421A1 WO 2006098421 A1 WO2006098421 A1 WO 2006098421A1 JP 2006305325 W JP2006305325 W JP 2006305325W WO 2006098421 A1 WO2006098421 A1 WO 2006098421A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- titanium
- silicon oxide
- containing silicon
- mold
- Prior art date
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- 239000003054 catalyst Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000010936 titanium Substances 0.000 title claims abstract description 39
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 39
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052814 silicon oxide Inorganic materials 0.000 title claims abstract description 22
- -1 oxirane compound Chemical class 0.000 claims abstract description 32
- 150000001875 compounds Chemical class 0.000 claims abstract description 26
- 239000011148 porous material Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims description 35
- 238000003860 storage Methods 0.000 claims description 19
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- 238000006884 silylation reaction Methods 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
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- 238000000465 moulding Methods 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 6
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- 238000006243 chemical reaction Methods 0.000 abstract description 27
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- 239000002994 raw material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 4
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- 125000001424 substituent group Chemical group 0.000 description 4
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- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000003570 air Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
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- 230000000704 physical effect Effects 0.000 description 3
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- UTXPCJHKADAFBB-UHFFFAOYSA-N tribenzyl(chloro)silane Chemical compound C=1C=CC=CC=1C[Si](CC=1C=CC=CC=1)(Cl)CC1=CC=CC=C1 UTXPCJHKADAFBB-UHFFFAOYSA-N 0.000 description 1
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- STMPXDBGVJZCEX-UHFFFAOYSA-N triethylsilyl trifluoromethanesulfonate Chemical compound CC[Si](CC)(CC)OS(=O)(=O)C(F)(F)F STMPXDBGVJZCEX-UHFFFAOYSA-N 0.000 description 1
- LAJGDBSSLQUXMC-UHFFFAOYSA-N trimethyl(nitro)silane Chemical compound C[Si](C)(C)[N+]([O-])=O LAJGDBSSLQUXMC-UHFFFAOYSA-N 0.000 description 1
- NQLVIKZJXFGUET-UHFFFAOYSA-N trimethyl(pyrrolidin-1-yl)silane Chemical compound C[Si](C)(C)N1CCCC1 NQLVIKZJXFGUET-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
- B01J31/0274—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 containing silicon
-
- 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
- B01J33/00—Protection of catalysts, e.g. by coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
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- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0063—Granulating
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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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/19—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic hydroperoxides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/04—Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
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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
- B01J2229/32—Reaction with silicon compounds, e.g. TEOS, siliconfluoride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/633—Pore volume less than 0.5 ml/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/66—Pore distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
- B01J37/033—Using Hydrolysis
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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 preserving a titanium-containing silicon oxide catalyst. More specifically, the present invention is a titanium-containing silicon oxide catalyst that can be used in a reaction for obtaining an oxysilane compound from, for example, a hydride peroxide and an olefin compound even after long-term storage, and can exhibit high activity. It relates to the storage method. Background art
- a method for obtaining an oxylan compound from octadropoxide and an olefin type compound in the presence of a catalyst is known.
- a catalyst used here, for example, patent documents disclose specific titanium-containing silicon oxide catalysts (for example, US Pat. No. 4,367,342, US Pat. 7-300312, JP 2000-107604, JP 2000-107605, JP 2000-109469, JP 2000-109470, JP 2000-117101, JP 2000 —See 119266, JP-A 2001-286768, JP-A 2002-2 24563, JP-A 2002-239381, JP-A 2004-19 5379 or JP 2909911).
- the present invention provides a method for preserving a titanium-containing silicon oxide catalyst that can be used in a reaction for obtaining an oxysilane compound from hydroperoxide and an olefin-type compound and that can exhibit high activity.
- the present invention can be used for the reaction of obtaining an oxysilane compound from, for example, hydroperoxide and an olefin compound even after long-term storage, and is a method for storing a titanium-containing silicon oxide catalyst that can exhibit high activity. Accordingly, a catalyst storage method is characterized in that the titanium-containing silicon oxide catalyst is stored at a relative humidity of 60% or less.
- titanium-containing silicon oxide catalyst examples include the above-mentioned patent documents (see U.S. Pat. No. 4,336,73,42, and U.S. Pat. No. 2,990,911). Titanium alkoxide or titanium halide supported on a carrier such as silica gel as described above in a gas phase or in a liquid phase, an aerosil type in which titanium halide and silicon halide are reacted in a flame, titanium Although it is not particularly limited, such as that obtained by sol-gel reaction between alkoxide and silicon alkoxide, it should be composed of a titanium-containing silicon oxide catalyst that satisfies all the following conditions (1) to (3) Is preferred.
- the average pore diameter is 10 A or more
- the specific pore volume means the pore volume per gram of catalyst.
- the above conditions (1) to (3) can be measured by an ordinary method using a physical adsorption method of a gas such as nitrogen or argon.
- the catalyst stored in the present invention may or may not have a peak indicating an interplanar spacing d.
- the peak indicating the interplanar spacing d here refers to a peak derived from the crystallinity and regularity of the solid, and there may be a broad peak derived from the amorphous part.
- the catalyst stored in the present invention has an infrared absorption spectrum. It is preferable to have an absorption peak in the region of 9 60 ⁇ 5 cm ⁇ 1 in Kuttle. This peak is considered to correspond to titanium introduced into the silica skeleton.
- the catalyst stored in the present invention is preferably produced by a production method having the following steps.
- First step Mixing silica source, titanium source and mold (template) in liquid form * Stirring to obtain solid containing catalyst component and mold
- Second step A step of obtaining a solid containing a catalyst component by removing the mold from the solid obtained in the first step.
- Third step A step of obtaining a silylated catalyst by subjecting the solid obtained in the second step to a silylation treatment.
- the first step is a step of obtaining a solid containing the catalyst component and the mold by mixing and stirring the silica source, the titanium source and the mold (template) in liquid form.
- the reagent to be used is solid, it may be used as a solution dissolved or dispersed in a solvent. Examples thereof include methyl orthosilicate, tetraethyl orthosilicate, and tetrapropyl orthosilicate.
- Silica sources containing organic groups such as alkyltrialkoxysilanes, dialkyl dialkoxysilanes, 1,2-bis (trialkoxysilyl) alkanes can also be used. They can be used alone or in admixture of several kinds.
- Titanium alkoxides such as tetramethyl titanate, tetraethyl titanate, tetrapropyl titanate, tetraisopropyl titanate, tetrabutyl titanate, tetraisoptyl titanate, tetra-2-ethylhexyl titanate, Tetraoctadecyl titanate titanium (IV) oxide acetylacetonate, titanium (IV) dipropoxybisacetyl acetate, etc., or titanium halides such as titanium tetrachloride, titanium tetrabromide, Examples thereof include titanium tetraiodide and titanyl sulfate.
- alkylammonium and dialkyl derived from cationic surfactants Nonionic surfactant polyalkylene oxides such as ammonium sulfate, trialkyl ammonium, benzyl ammonium, alkyl sulfate ions derived from anionic surfactants, alkyl phosphate ions, their block copolymers, alkylamines Any of these can be applied. Of these, quaternary ammonium ions represented by the following general formula (I) are preferably used.
- R 1 represents a linear or branched hydrocarbon group having 2 to 36 carbon atoms
- R 2 to R 4 each independently represents an alkyl group having 1 to 6 carbon atoms.
- R 1 is a linear or branched hydrocarbon group having 2 to 36 carbon atoms, and preferably 10 to 18 carbon atoms.
- R 2 to R 4 are each independently an alkyl group having 1 to 6 carbon atoms, and all of R 2 to R 4 are preferably methyl groups.
- Specific examples of the quaternary ammonium ion represented by the general formula (I) include hexadecyltrimethylammonium, dodecyltrimethylammonium, benzyltrimethylammonium, dimethyldidodecylammonium, hexadecylpyrimethyl. And cations such as dinium.
- quaternary ammonium ions represented by the general formula (I) can be used alone or in combination of several kinds.
- solvents include water and alcohols such as methanol, ethanol, n-propanol, 2-propanol, n-butanol, sec-butanol, tert-butanol, allylic alcohol, cyclohexanol, benzyl
- alcohols include diols and mixtures thereof.
- the amount of the titanium source against the silica source is 1 0 _ 5 to 1 in molar ratio, preferably 0. 0 0 0 0 8 to 0.4.
- the amount of the quaternary ammonium Niu-ion to the total amount of these silica source and titanium source is preferably 1 0 2 to 2 in molar ratio.
- Quaternary ammonium hydroxide is preferred as the alkali source, and examples include tetramethyl ammonium hydroxide, tetraethyl ammonium hydroxide, tetrapropyl ammonium hydroxide, etc.
- the acid include inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid, and organic acids such as formic acid, acetic acid and propionic acid.
- Mixing / stirring temperature is usually from 30 to 100 ° C.
- a solid is formed by mixing and stirring, but this may be aged to further grow the solid.
- the aging time is usually 1800 hours or less, and the aging temperature is usually 0 to 200 ° C.
- heating is required at the time of aging, it is preferable to transfer to a pressure vessel and seal in order to avoid solvent bubbling.
- the second step is a step of obtaining a solid containing a catalyst component by removing the mold from the solid obtained in the first step.
- the mold agent may be removed by either high-temperature calcination or solvent extraction, but from the viewpoint of obtaining a highly active catalyst, solvent extraction is preferred.
- the extraction and removal of the mold can be achieved by subjecting the solid containing the catalyst component and the mold obtained in the first step to a solvent extraction operation.
- the solvent used for the extraction is not particularly limited as long as it can dissolve the compound used in the mold, and in general, oxax and Z or oxo-substituted hydrocarbon which are liquid at room temperature having 1 to about 12 carbon atoms can be used.
- Suitable solvents of this type include alcohols, ketones, ethers (acyclic and cyclic) and esters, such as methanol, ethanol, ethylene glycol, propylene glycol, isopropano.
- Alcohols such as 1, n-butanol and octanol; ketones such as acetone, diethyl ketone, methyl ethyl ketone and methyl isobutyl ketone; ethers such as diisobutyl ether and tetrahydrofuran; and Examples include esters such as methyl acetate, ethyl acetate, butyl acetate, and butyl propionate. Of these, alcohols are preferable from the viewpoint of the solubility of the mold, and methanol is more preferable.
- the weight ratio of these extraction solvents to the solid containing the catalyst component and the mold is usually 1 to 100, preferably 5 to 300.
- acid in order to improve the extraction effect, acid or it is added to these solvents.
- These salts may be added.
- the acid used include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, and odorous acid, and organic acids such as formic acid, acetic acid, and propionic acid.
- examples of such salts include alkali metal salts, alkaline earth metal salts, ammonium salts and the like.
- the concentration of the acid to be added or the salt thereof in the solvent is preferably 1 O m o 1 Z 1 or less, more preferably 5 m o 1/1 or less. If the concentration of the acid to be added or the salt thereof is excessive, the titanium present in the catalyst component may be eluted and the catalytic activity may be reduced.
- the liquid phase is separated by a method such as filtration or decantation. Repeat this operation as many times as necessary. It is also possible to extract the mold by a method of filling the solid containing the catalyst component and the mold into a reaction tube or the like and circulating the extraction solvent. The completion of the solvent extraction can be known, for example, by analyzing the liquid phase part.
- the extraction temperature is preferably 0 to 200 ° C., more preferably 20 to 100 ° C. When the boiling point of the extraction solvent is low, the extraction may be performed by applying pressure.
- the quaternary ammonium ion represented by the general formula (I) in the solution obtained after the extraction treatment can be recovered and reused as a mold raw material in the first step.
- the extraction solvent can be purified and reused by a normal distillation operation or the like.
- Alcohols that are preferably used to remove molds react with the silylating agent in the silylation of the next step to inhibit the desired reaction, so the extraction solvent contained in the solid after the mold is extracted is usually dried. Removed by. Examples of the drying device include a conical dryer and a shelf dryer equipped with hot air or a decompression device. However, these dryings are very time consuming and economical, and may not be sufficient from the viewpoint of catalyst productivity.
- the extraction solvent contained in the solid obtained in the second step may be replaced with a solvent that is substantially inert to the silylating agent used in the subsequent silylation step. preferable.
- the substitution solvent used in this substitution step is substantially inert to the silylating agent, and As long as it satisfies the condition that the extraction solvent used in the second step can be dissolved.
- Solvents preferably used for this substitution operation are generally hydrocarbons, halogenated hydrocarbons, canes, ethers, esters, N, N-2 dihydrocarbons having a carbon number of 1 to ⁇ 12 at room temperature.
- Substituted amides, nitriles, tertiary amines, etc. for example, hexane, cyclohexane, black mouth form, benzene, toluene, xylene, petroleum, jetyl ketone, methyl ethyl ketone, methyl isobutyl ketone , Diethyl ether, diisoptyl ether, tetrahydrofuran, dioxane, methyl acetate, ethyl acetate, dimethylformamide, acetonitrile, pyridine, triethylamine, dimethyl sulfoxide and the like.
- preferred substitution solvents are hydrocarbons, with to
- the solid containing the substitution solvent and the extraction solvent obtained in the second step is sufficiently mixed, and then the liquid phase part is separated by a method such as filtration or decantation. This operation is repeated as many times as necessary. It is also possible to substitute by a method in which a solid containing an extraction solvent is filled in a reaction tube or the like and a substitution solvent is circulated. From the viewpoint of catalyst productivity, it is preferable to perform the second step, the solvent replacement step, and the subsequent silylation step in the same reactor. The completion of this replacement operation can be known, for example, by analyzing the liquid phase part.
- the substitution temperature is preferably from 0 to 200 ° C, more preferably from 20 to 1 ° C. If the solvent used in this operation has a low boiling point, it may be replaced by pressurization.
- substitution solvent used in this step can be reused after removing the extraction solvent by a conventional method such as distillation or extraction.
- the third step is a step of obtaining a silylated catalyst by subjecting the solid obtained in the second step to a silylation treatment.
- Silylation may be performed by a gas phase method in which a gaseous silylating agent is reacted with titanium-containing silicon oxide, or by a liquid phase method in which a silylating agent and titanium-containing silicon oxide are reacted in a solvent.
- the liquid phase method is more preferable.
- silylation is a liquid phase method Hydrocarbons are used as a suitable solvent when carried out in
- silylating agents include organic silanes, organic silylamines, organic silylamides and derivatives thereof, and organic silazanes and other silylating agents.
- organosilanes include chlorotrimethylsilane, dichlorodimethylsilane, chlorodimethylsilane, nitrotrimethylsilane, chlorotriethylsilane, iodide dimethylbutylsilane, chlorodimethylphenylsilane, chlorodimethylsilane, dimethyl n- Propylchlorosilane, dimethylisopropylchlorosilane, t-butyldimethylchlorosilane, tripropylchlorosilane, dimethyloctylchlorosilane, tributylchlorosilane, trihexylchlorosilane, dimethylethylchlorosilane, dimethyloctyldecylchlorosilane, n-butyldimethylchlorosilane, bromo Methyldimethylchlorosilane, chloromethyldimethylchlor
- organic silylamines include N-trimethylsilyldimethylamine, N-trimethylsilyljetylamine, N-triethylsilylamine, N-triethylsilyldimethylamine, N-triethylsilyljetylamine, N-tri-n-propylsilylamine, N-t-butyldimethylsilylamine, N-trimethylsilylimidazole, N-triethylsilylimidazole, N-tri-n-proylsilylimidazole, N-t —Ptyldimethylsilylimidazole, N-dimethylethylsilylimidazole, N-dimethyl-n-propylsilylimidazole, N-dimethylisopropylsilylimidazole, N-trimethylsilyldimethylamine, N— Trimethylsilyljetylamine, N— ⁇ -methylsilyl
- organic silylamides and derivatives include N, O-bistrimethylsilylacetamide, N, O-pistrimethylsilyltrifluoroacetamide, N-trimethylsilylacetamide, N-methyl-N-trimethylsilylacetamide, N-methyl-N-trimethylsilyltrifluoroacetamide, N-methyl-N-trimethylsilylheptafluorobutyramide, N_ (t-butyldimethylsilyl) one N-trifluoroacetamide, N Silyl) trifluoroacetamide.
- organic silazanes examples include hexamethyldisilazane, hexaethyldisilazane, heptamethyldisilazane, 1, 1, 3, 3 —tetramethyldisilazane, 1,3-bis (chloromethyl) tetramethyldisilazane, 1 , 3-Dibvi-1,1,1,3,3-tetramethyldisilazane, 1,3-diphenyltetramethyldisilazane, and hexamethylcyclotrisilazane.
- silylating agents include N-methoxy-N, O-bistrimethylsilyl trifluoroacetamide, N-methoxy-1-N, O-pistrimethylsilyl carbamate, N, O-bistrimethylsilylsulfamate, trimethylsilyltrifluor.
- Examples include fluoromethanesulfonate, triethylsilyltrifluoromethanesulfonate, and N, ⁇ '-pistrimethylsilylurea.
- the silylating agent may be used alone, or two or more silylating agents may be used simultaneously or separately.
- the most preferred silylating agent is hexamethyldisilazane.
- the silylation can be carried out by either batch or flow method.
- the catalyst after resilylation is dried by a general method such as drying under reduced pressure or contact with an inert dry gas such as heated nitrogen. It is preferable to do.
- the catalyst suitably stored in the present invention is usually used as a catalyst molded body by the process of molding a solid containing a catalyst component.
- the molding process may be carried out at any stage before or after the above-mentioned mold removing process, after the solvent replacement process and after the silylation process, but the viewpoint of suppressing deterioration of catalyst physical properties such as specific surface area and pore volume Therefore, it is preferably performed before the mold removing step.
- any method such as compression molding or extrusion molding may be used. In extrusion molding, organic and inorganic binders that are generally used can be used. A decrease in the medium activity may be caused.
- the compression molding method is most preferable from the viewpoints of catalyst strength and catalyst physical properties.
- compression molding methods include roll press molding (pre-ketting and compacting), hydraulic press molding, and tableting molding.
- the pressure for compression is usually 0.1 to 10 tons 7 m 2 , preferably 0.2 to 5 tons / cm 2 , and more preferably 0.5 to 2 tons Z cm 2 . If the pressure is too low, the strength of the molded body may be insufficient. On the other hand, if the pressure is too high, the pores may be destroyed and the physical properties of the catalyst may be insufficient.
- the solid containing the catalyst component contains an appropriate amount of moisture, and thus a molded body having sufficient strength can be produced even at a low compression pressure.
- the water content of the solid containing the catalyst component subjected to compression molding is preferably 1 to 70% by weight, more preferably 5 to 40% by weight.
- the amount of moisture may be adjusted by the degree of drying when the damp solid is dried, or may be adjusted by adding water to the sufficiently dried solid.
- a generally used binder may be added as long as desired performance is not hindered.
- the shape of the molded body may be any shape such as a tablet, a sphere, or a ring. It may be used in the reaction as it is, or may be crushed to an appropriate size.
- the catalyst obtained by the above production method has a high surface area and a highly dispersed titanium active point, in addition to selective oxidation reaction, for example, epoxidation reaction of olefin-type compounds, various oxidation reactions of organic compounds. Can be used.
- the acid point of the catalyst can be further strengthened by adding a third component such as alumina, and can also be used for an alkylation reaction or a catalytic reforming reaction.
- the storage method of the catalyst of the present invention is characterized by storing at a relative humidity of 60% or less, preferably storage at a relative humidity of 30% or less, and more preferably storage at a relative humidity of 15% or less. . If the relative humidity during storage is too high, it will cause a significant decrease in catalytic activity.
- a method for setting the relative humidity to a desired value includes a method in which a dry gas is continuously circulated in a container in which a catalyst is accommodated, a method in which it is stored in a sealed container together with a desiccant such as silica gel zeolite, and a humidity control device.
- a desiccant such as silica gel zeolite
- a humidity control device How to store in a container and / or in a warehouse, keep the container with gas barrier properties to the desired humidity, and then store it in a sealed state Method.
- the storage period of the catalyst means from immediately after the catalyst production is completed until it is used for the reaction. Generally, from the time when the catalyst is produced and filled in the storage container, the container is introduced into the reactor. Refers to until is opened.
- the material of the container is arbitrary as long as it can maintain a dry state.
- examples thereof include a resin having a gas barrier property, a resin obtained by laminating a resin having a gas barrier property, and a resin obtained by laminating a metal such as aluminum.
- a container equipped with an inner bag made of a resin in which aluminum is laminated is preferably used.
- the gas in the storage atmosphere is not particularly limited as long as it does not contain anything that adversely affects the catalyst, and there is no problem as long as the conditions described in this application are satisfied, but in general, air, nitrogen, oxygen, argon Carbon dioxide or the like is preferably used, and air or nitrogen is more preferably used from the viewpoints of ease of handling, cost, and safety.
- the temperature at the time of storage is preferably ⁇ 30 ° ( ⁇ 100 ° C, preferably 0 ° C to 40 ° C), but should not be limited thereto.
- the catalyst stored in the present invention can be optimally used in a method for producing an oxysilane compound in which an olefin-type compound and a hydroperoxide are reacted.
- the olefin type compound may be an acyclic, monocyclic, bicyclic or polycyclic compound, and may be a monoolefin type, a olefin type or a polyolefin type. If there are two or more olefin bonds, these may be conjugated or non-conjugated.
- Olefin-type compounds with 2 to 60 carbon atoms are generally preferred. Examples of such hydrocarbons are ethylene, propylene, 1-butene, isobutylene, 1-hexene, 2-hexene, and 3- Xene, 1-octene, 1-decene, styrene, cyclohexene and the like.
- Suitable diolephin-type compounds include butadiene and isoprene.
- a substituent may be present in the olefin compound, but the substituent is preferably a relatively stable group.
- the substituent include a halogen atom, and oxygen. , Sulfur, nitrogen
- substituents may be present that contain an atomic atom together with hydrogen and / or carbon atoms.
- Particularly preferred olefin-type compounds are olefin-type unsaturated alcohols, and olefin-type unsaturated hydrocarbons substituted with halogen, and examples thereof include allyl alcohol, crotyl alcohol, and salt allyl.
- Organic hydroperoxide As an example of hydroperoxide, organic hydroperoxide can be mentioned.
- Organic Hyde Mouth Peroxide is a general formula
- R is a group having 3 to 20 carbon atoms. More preferably, R is a hydrocarbon group having 3 to 10 carbon atoms, especially a second or third alkyl group or an aralkyl group. Among these groups, particularly preferred groups are tertiary alkyl groups, and second or third aralkyl groups.
- tertiary butyl group examples thereof include tertiary pentyl group, cyclopentyl group, 2_ Examples thereof include a phenyl-2-propyl group, and various tetranyl groups generated by removing a hydrogen atom from the aliphatic side chain of the tetralin molecule.
- the resulting hydroxyl compound is 2-phenyl-2-propanol. This can be converted to 0: -methylstyrene by a dehydration reaction.
- the resulting a-methylstyrene can be converted to cumene by reaction with hydrogen in the presence of a catalyst, and the resulting cumene can be converted to cumene hydroperoxide by reaction with oxygen. Can be used for reaction.
- the hydroxyl compound obtained when ethylbenzene hydroperoxide is used as the organic hydroperoxide is 1-phenylethanol. This can be converted to styrene by a dehydration reaction. Styrene is useful as a raw material for resins such as polystyrene and ABS resin. The resulting styrene is converted to ethylbenzene by reaction with hydrogen in the presence of a catalyst. Tylbenzene can be converted to ethylbenzene hydroperoxide by reaction with oxygen and used for reaction with olefin-type compounds.
- the third amylene produced by the dehydration reaction of the third pentyl alcohol obtained when the third pentyl nanoperoxide is used as the organic hydroperoxide is a useful substance as a precursor of isoprene.
- Tertiary pentyl alcohol is also useful as a precursor of methyl tertiary pentyl ether, an octene number improver.
- T-Butyl alcohol obtained when t-butyl hydroperoxide is used as the organic hydroperoxide is a useful substance as a precursor of methyl-t-butyl ether which is an octane improver.
- hydroperoxide other than an organic hydroperoxide is hydrogen peroxide.
- Hydrogen peroxide is a compound of the chemical formula H 2 O OH and can usually be obtained in the form of an aqueous solution. This reacts with the olefin type compound to produce an oxysilane compound and water.
- the organic hydroperoxide and hydrogen peroxide used as the raw material may be a diluted or concentrated purified product or non-purified product.
- organic octaperoxide is preferably used in the present invention.
- the epoxidation reaction can be carried out in the liquid phase using a solvent and Z or a diluent.
- Solvents and diluents must be liquid under the temperature and pressure during the reaction and be substantially inert to the reactants and products.
- the solvent may consist of substances present in the hydroperoxide solution used. For example, if cumene hydroperoxide is a mixture of cumene hydroperoxide and its raw material, cumene, it can be used as a substitute for solvent without any additional solvent. It is.
- the epoxidation reaction temperature is generally 0 to 200, but a temperature of 25 to 200 is preferred.
- the pressure may be sufficient to keep the reaction mixture in a liquid state. In general, the pressure is advantageously between 1 00 and 1 0 0 0 0 0 k Pa.
- a liquid mixture containing the desired product is removed from the catalyst. Easy separation.
- the liquid mixture can then be purified by a suitable method. Purification includes fractional distillation, selective extraction, filtration and washing.
- the solvent, catalyst, unreacted olefin-type compound, and unreacted hydroperoxide can be recycled and reused.
- the reaction using the catalyst of the present invention can be carried out in the form of a slurry or a fixed bed. In the case of a large-scale industrial operation, it is preferable to use a fixed bed. This reaction can be carried out by a batch method, semi-continuous method or continuous method. When the liquid containing the reactants is passed through a fixed bed, the liquid mixture exiting the reaction zone contains no or substantially no catalyst.
- a white solid obtained by drying was mixed with water by spraying so that the water content was 1.5 parts by weight, and compression-molded with a roll press. The obtained solid was broken, and a molded body containing a catalyst component and a mold of 1.0 to 2.0 mm was obtained using a sieve. 1. Solids of 0 mm or less were recycled and compression molded again.
- the obtained solid (5.0 g), hexamethyldisilazane (3.4 g) and toluene (30.0 g) were placed in a flask, and silylation was performed for 1.5 hours while heating at 110 ° C. After removing the solvent by decantation, the titanium-containing silicon oxide catalyst was obtained by drying at 110 ° C. under reduced pressure.
- the above titanium-containing silicon oxide catalyst was placed in a 2 Om 1 glass sample bottle, and the inside of the bottle was replaced with dry nitrogen, and then sealed and stored at room temperature for 1 week.
- Example 1 The catalyst obtained in the same manner as in Example 1 was the same as in Example 1 except that the storage of the catalyst in Example 1 was carried out in an open system for 6 months at a temperature of 20 ⁇ 5 ° C and a relative humidity of 50 ⁇ 5%.
- the batch reactor was used for evaluation.
- the reaction results are shown in Table 1. Comparative Example 1
- Example 1 The catalyst obtained in the same manner as in Example 1 except that the catalyst of Example 1 was stored in an open system for 2 months at a temperature of 50 ° C and a relative humidity of 85%. The device was evaluated. The reaction results are shown in Table 1. table 1
- a method for preserving a titanium-containing silicon oxide catalyst that can be used in a reaction for obtaining an oxysilane compound from, for example, a hydroperoxide and an olefin compound even after long-term storage, and can exhibit high activity. Can be provided.
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Epoxy Compounds (AREA)
Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06729315A EP1862218A4 (en) | 2005-03-17 | 2006-03-13 | METHOD FOR STORING A TITANIUM CATALYST ON SILICON OXIDE |
US11/908,456 US8470729B2 (en) | 2005-03-17 | 2006-03-13 | Method for storing titanium-containing silicon oxide catalyst |
KR1020077023396A KR101368579B1 (ko) | 2005-03-17 | 2006-03-13 | 티탄 함유 규소 산화물 촉매의 보존 방법 |
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JP2005076608 | 2005-03-17 | ||
JP2005-076608 | 2005-03-17 | ||
JP2005-332532 | 2005-11-17 | ||
JP2005332532A JP2006289341A (ja) | 2005-03-17 | 2005-11-17 | チタン含有珪素酸化物触媒の保存方法 |
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WO2006098421A1 true WO2006098421A1 (ja) | 2006-09-21 |
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PCT/JP2006/305325 WO2006098421A1 (ja) | 2005-03-17 | 2006-03-13 | チタン含有珪素酸化物触媒の保存方法 |
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US (1) | US8470729B2 (ja) |
EP (1) | EP1862218A4 (ja) |
JP (1) | JP2006289341A (ja) |
KR (1) | KR101368579B1 (ja) |
WO (1) | WO2006098421A1 (ja) |
Cited By (1)
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JP2015059068A (ja) * | 2013-09-19 | 2015-03-30 | 国立大学法人 新潟大学 | メソポーラス酸化タングステン及びその製造方法、光触媒、並びにメソポーラス酸化タングステン電極 |
Families Citing this family (3)
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JP4558842B2 (ja) * | 2008-06-05 | 2010-10-06 | パナソニック株式会社 | 光触媒性部材の保管方法 |
JP5942923B2 (ja) * | 2013-05-09 | 2016-06-29 | 信越化学工業株式会社 | シリルアミン化合物を用いたシリル化方法 |
EP4129476A4 (en) * | 2020-04-01 | 2024-05-01 | Sumitomo Chemical Company, Limited | CATALYST FOR HALOGEN GENERATING, PACKING AND PACKING MANUFACTURING PROCESS |
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JP2000107604A (ja) * | 1998-08-04 | 2000-04-18 | Sumitomo Chem Co Ltd | チタン含有珪素酸化物触媒、該触媒の製造方法及びプロピレンオキサイドの製造方法 |
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- 2005-11-17 JP JP2005332532A patent/JP2006289341A/ja active Pending
-
2006
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- 2006-03-13 US US11/908,456 patent/US8470729B2/en active Active
- 2006-03-13 EP EP06729315A patent/EP1862218A4/en not_active Withdrawn
- 2006-03-13 WO PCT/JP2006/305325 patent/WO2006098421A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
EP1862218A1 (en) | 2007-12-05 |
KR101368579B1 (ko) | 2014-02-28 |
US8470729B2 (en) | 2013-06-25 |
US20090227807A1 (en) | 2009-09-10 |
KR20070119682A (ko) | 2007-12-20 |
EP1862218A4 (en) | 2011-07-06 |
JP2006289341A (ja) | 2006-10-26 |
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