WO2023007676A1 - 1,3-ブタジエン用合成触媒及びその製造方法、並びに1,3-ブタジエンの製造方法 - Google Patents
1,3-ブタジエン用合成触媒及びその製造方法、並びに1,3-ブタジエンの製造方法 Download PDFInfo
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- WO2023007676A1 WO2023007676A1 PCT/JP2021/028199 JP2021028199W WO2023007676A1 WO 2023007676 A1 WO2023007676 A1 WO 2023007676A1 JP 2021028199 W JP2021028199 W JP 2021028199W WO 2023007676 A1 WO2023007676 A1 WO 2023007676A1
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- catalyst
- butadiene
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- ethanol
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- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000003054 catalyst Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims description 24
- 230000015572 biosynthetic process Effects 0.000 title claims description 12
- 238000003786 synthesis reaction Methods 0.000 title claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 98
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 45
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 22
- 125000005372 silanol group Chemical group 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 9
- 229910002026 crystalline silica Inorganic materials 0.000 claims abstract description 6
- 239000011701 zinc Substances 0.000 claims description 30
- 239000011148 porous material Substances 0.000 claims description 27
- 229910052726 zirconium Inorganic materials 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 14
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 14
- 150000003751 zinc Chemical class 0.000 claims description 12
- -1 zirconium alkoxide Chemical class 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical group [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000006356 dehydrogenation reaction Methods 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- WCASXYBKJHWFMY-NSCUHMNNSA-N 2-Buten-1-ol Chemical compound C\C=C\CO WCASXYBKJHWFMY-NSCUHMNNSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 2
- 238000005882 aldol condensation reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- BSDOQSMQCZQLDV-UHFFFAOYSA-N butan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] BSDOQSMQCZQLDV-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- MLUCVPSAIODCQM-NSCUHMNNSA-N crotonaldehyde Chemical compound C\C=C\C=O MLUCVPSAIODCQM-NSCUHMNNSA-N 0.000 description 2
- MLUCVPSAIODCQM-UHFFFAOYSA-N crotonaldehyde Natural products CC=CC=O MLUCVPSAIODCQM-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- WCASXYBKJHWFMY-UHFFFAOYSA-N gamma-methylallyl alcohol Natural products CC=CCO WCASXYBKJHWFMY-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000004246 zinc acetate Substances 0.000 description 2
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 229910018089 Al Ka Inorganic materials 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 229910004631 Ce(NO3)3.6H2O Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000012494 Quartz wool Substances 0.000 description 1
- 229910008051 Si-OH Inorganic materials 0.000 description 1
- 229910006358 Si—OH Inorganic materials 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UARGAUQGVANXCB-UHFFFAOYSA-N ethanol;zirconium Chemical compound [Zr].CCO.CCO.CCO.CCO UARGAUQGVANXCB-UHFFFAOYSA-N 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- IKGXNCHYONXJSM-UHFFFAOYSA-N methanolate;zirconium(4+) Chemical compound [Zr+4].[O-]C.[O-]C.[O-]C.[O-]C IKGXNCHYONXJSM-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000004230 steam cracking Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- 229940102001 zinc bromide Drugs 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 229960001939 zinc chloride Drugs 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/035—Microporous crystalline materials not having base exchange properties, such as silica polymorphs, e.g. silicalites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
-
- 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
- C07C2523/06—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of zinc, cadmium or mercury
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
- C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- C07C2529/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
Definitions
- Embodiments of the present invention relate to a catalyst for synthesizing 1,3-butadiene from ethanol, a method for producing the same, and a method for producing 1,3-butadiene using the catalyst.
- 1,3-Butadiene is widely used as a raw material for producing butadiene rubber (BR) and styrene-butadiene rubber (SBR).
- BR butadiene rubber
- SBR styrene-butadiene rubber
- 1,3-butadiene is mainly produced by separation from the C4 fraction during the production of ethylene by steam cracking of naphtha.
- a method of synthesizing 1,3-butadiene from ethanol by direct conversion has been proposed.
- a zeolite material having a framework structure containing YO2 is included as a catalyst for obtaining butadiene by contacting with ethanol, and at least part of Y contained in the framework structure is Isomorphically substituted catalysts are disclosed.
- Y is preferably Si, Sn, Ti, Zr or Ge and X is preferably Zr, Ti, Sn or Ta.
- Patent Document 1 also discloses that the zeolitic material in which Y is Si and X is Ti may further comprise Zn as a non-framework element.
- Patent Document 2 describes a catalyst (ZnO/ZrO 2 /MgO/SiO 2 ) are disclosed.
- Direct conversion of ethanol to 1,3-butadiene is a promising route.
- the direct conversion is a complex reaction, requiring multifunctional catalysts with dehydrogenation sites, Lewis acid sites, and mild Bronsted sites.
- the yield of 1,3-butadiene is necessarily high with conventional catalysts, and an improvement in yield is desired.
- Embodiments of the present invention provide a 1,3-butadiene synthesis catalyst capable of efficiently synthesizing 1,3-butadiene from ethanol, a method for producing the same, and a method for producing ethanol using the catalyst. for the purpose.
- a catalyst for synthesizing 1,3-butadiene from ethanol comprising a porous silica carrier made of crystalline silica, ZnO supported on the silica carrier, and a silanol group of the silica carrier.
- 1,3-butadiene In the presence of a catalyst containing a porous silica support made of crystalline silica, ZnO supported on the silica support, and Zr interacting with the silanol groups of the silica support, 1,3-butadiene is A method for producing 1,3-butadiene, comprising obtaining
- the catalyst has micropores with a pore diameter of 2 nm or less.
- the silica support has an MFI-type skeleton structure.
- the catalyst has a Zn/Si molar ratio of Zn/Si of 0.001 to 0.1, and a Zr/Si molar ratio of Zr/Si of 0.05 to 0.5.
- the catalyst is a catalyst obtained by mixing zinc salt, zirconium alkoxide, orthosilicate, and template agent with water, hydrothermally synthesizing, and calcining is.
- the template agent is tetrapropylammonium hydroxide.
- a method for producing a catalyst for synthesizing 1,3-butadiene for synthesizing 1,3-butadiene from ethanol comprising (i) mixing a zinc salt, a zirconium alkoxide, an orthosilicate, and a template agent with water (ii) hydrothermal synthesis using the obtained mixture, and (iii) calcining the reaction product obtained by the hydrothermal synthesis. Production method.
- the template agent is tetrapropylammonium hydroxide.
- 1,3-butadiene can be efficiently synthesized from ethanol.
- a catalyst for synthesizing 1,3-butadiene (hereinafter sometimes simply referred to as a catalyst) according to the present embodiment and a method for producing 1,3-butadiene using the same will be described below.
- a catalyst according to embodiments is a catalyst for the synthesis of 1,3-butadiene from ethanol and comprises a porous silica support, Zn, and Zr.
- the silica carrier is made of crystalline silica and is a porous crystal with a three-dimensional pore structure. Therefore, compared to the case of amorphous silica, the specific surface area is large, which is advantageous for dispersing various active centers, and the catalyst performance can be improved.
- Pores include micropores, mesopores, and macropores, and the silica carrier may have only one of these, or may have two or more of them.
- micropores refer to pores with a pore size of 2 nm or less.
- Mesopores refer to pores with a pore diameter greater than 2 nm and less than 50 nm.
- Macropores refer to pores with a pore diameter of 50 nm or more.
- Silica supports have a framework structure comprising SiO2 .
- the skeletal structure basically consists of SiO 2 , but part of Si contained in the skeletal structure may be substituted with trivalent, tetravalent and/or pentavalent elements such as aluminum element.
- the silica support has a framework structure of SiO 2 without such substitutions.
- the silica support may be a zeolite that does not contain elemental aluminum (ie dealuminated zeolite).
- the skeleton structure of the silica carrier is not particularly limited, and examples thereof include MFI type, BEA type, FER type, MWW type, MOR type, FAU type, LTA type, LTL type, etc. Any one or two of these may be used. It may have a skeletal structure that combines more than one species. Among these, the silica carrier in one embodiment preferably has an MFI-type skeleton structure.
- ZnO zinc (Zn) is supported on a silica carrier in the form of oxide, that is, ZnO. Since the atomic radius of Zn is larger than that of Si, Zn does not enter into the skeleton structure of the silica support during the process of synthesizing the catalyst, and is supported on the silica support in the form of oxide. It is believed that ZnO supported on the silica support primarily promotes the dehydrogenation of ethanol.
- zirconium (Zr) is contained mainly in a state of interacting with silanol groups (Si—OH) of the silica support. Since the atomic radius of Zr is larger than that of Si, Zr does not enter into the framework structure of the silica support during the synthesis process of the catalyst, and Zr interacts with the silanol groups on the SiO2 surface within the pores of the silica support to form Lewis Forms an active center.
- the interaction between the silanol group and Zr means that some bond is formed between the silanol group and Zr.
- Zr is coordinated to the silanol group, and Zr preferably forms a Si—O—Zr bond with Si of the silanol group. That is, Zr(OH)(OSi) 3 may be taken.
- Zr may only interact with silanol groups in this way, but a part of Zr may be in the form of an oxide, ie, ZrO 2 , supported on the silica support. In one embodiment of the catalyst, Zr may be included in the form of Zr(OH)( OSi ) 3 and ZrO2.
- the catalyst according to the present embodiment has at least one kind of pores selected from the group consisting of micropores, mesopores and macropores, since the silica support is made of porous silica as described above.
- the catalyst preferably has micropores with a pore size of 2 nm or less. In that case, it may have mesopores and/or macropores as well as micropores.
- the pore diameter of the micropores the peak pore diameter in the pore diameter distribution by the HK method is not particularly limited, but is preferably 0.3 nm or more and 1.5 nm or less, more preferably 0.5 nm or more and 1.0 nm or less. be.
- the molar ratio Zn/Si of zinc element and silica element is not particularly limited, but is preferably 0.001 to 0.1.
- the molar ratio Zn/Si is 0.001 or more, the dehydrogenation of ethanol can be enhanced.
- the molar ratio Zn/Si is 0.1 or less, the dehydrogenation of ethanol can be promoted without inhibiting the actions of other active species.
- the molar ratio Zn/Si is preferably 0.005 or more, more preferably 0.008 or more.
- the molar ratio Zn/Si is preferably 0.05 or less, more preferably 0.03 or less.
- the molar ratio Zr/Si of the zirconium element and the silica element is not particularly limited, but is preferably 0.05 to 0.5.
- the molar ratio Zr/Si is 0.05 or more, the effect of promoting aldol condensation and MPV reduction can be enhanced.
- the molar ratio Zr/Si is 0.5 or less, generation of by-products can be suppressed.
- the molar ratio Zr/Si is preferably 0.08 or more, more preferably 0.1 or more.
- the molar ratio Zr/Si is preferably 0.4 or less, more preferably 0.3 or less.
- Method for producing a catalyst for synthesizing 1,3-butadiene Although the method for producing the above catalyst is not particularly limited, it is preferably prepared by a hydrothermal synthesis method.
- a production method includes the following steps. (i) mixing a zinc salt, a zirconium alkoxide, an orthosilicate and a templating agent with water; (ii) hydrothermally synthesizing using the resulting mixture, and (iii) a step of calcining the reaction product obtained by the hydrothermal synthesis;
- the zinc salt is not particularly limited, and examples thereof include water-soluble zinc salts such as zinc acetate, zinc nitrate, zinc sulfate, zinc chloride, and zinc bromide, which are used singly or in combination of two or more. may
- the zirconium alkoxide is not particularly limited, and includes, for example, zirconium methoxide, zirconium ethoxide, zirconium propoxide, zirconium butoxide, etc. Any one of them or two or more thereof may be used in combination.
- the template agent is not particularly limited, it is preferable to use, for example, tetrapropylammonium hydroxide (TPAOH).
- TPAOH tetrapropylammonium hydroxide
- Examples of the orthosilicate as the silica source include tetraethoxysilane (TEOS), tetramethoxysilane (TEMOS), tetrapropoxysilane, tetrabutoxysilane, and the like, any one of which may be used alone or in combination of two or more. may be used.
- TEOS tetraethoxysilane
- TEMOS tetramethoxysilane
- tetrapropoxysilane tetrabutoxysilane
- tetrabutoxysilane any one of which may be used alone or in combination of two or more. may be used.
- the amount of zinc salt used is not particularly limited, but the molar ratio Zn/Si of elemental zinc and elemental silicon relative to the amount of orthosilicate used is preferably 0.001 to 0.1, more preferably It is 0.005 to 0.05, more preferably 0.008 to 0.03.
- the amount of zirconium alkoxide used is not particularly limited, but the molar ratio Zr/Si of zirconium element and silicon element with respect to the amount of orthosilicate used is preferably 0.05 to 0.5, more preferably It is 0.08 to 0.4, more preferably 0.1 to 0.3.
- the amount of the template agent used is not particularly limited, but may be 20 to 200 parts by mass, 50 to 150 parts by mass, or 80 to 120 parts by mass with respect to 100 parts by mass of the orthosilicate used.
- step (i) when the zinc salt, zirconium alkoxide, orthosilicate, template agent and water are mixed, other components such as lower alcohols may be included.
- a zinc salt, a zirconium alkoxide, and an orthosilicate may be dissolved in a lower alcohol such as ethanol, and a template agent and water may be added to the resulting solution and mixed.
- a template agent and water may be added to the resulting solution and mixed.
- step (i) the lower alcohol may be distilled off from the mixture containing the ZnZr silicate precursor thus obtained.
- step (ii) hydrothermal synthesis is performed using the mixture.
- Hydrothermal synthesis is a reaction performed in the presence of hot water at high temperature and high pressure, and further dehydration condensation is performed to produce silica. At that time, pores having a predetermined pore diameter are formed due to the presence of the template agent.
- zinc salt and zirconium alkoxide are mixed with orthosilicate to perform one-pod hydrothermal synthesis, the active centers Zn and Zr can be uniformly dispersed in the silica carrier, and the interaction between the active centers can be suppressed. can be promoted.
- Hydrothermal synthesis can be performed using, for example, an autoclave.
- the treatment conditions are not particularly limited, but may be, for example, 150 to 180° C., pressure spontaneously generated due to volume expansion, and 24 to 96 hours.
- the obtained reaction product is dried, and then in step (iii), the reaction product is fired.
- the firing temperature is not particularly limited, and may be, for example, 300 to 700°C or 400 to 600°C.
- the product may be pulverized and further subjected to molding such as sizing.
- the method for producing 1,3-butadiene according to the present embodiment includes obtaining 1,3-butadiene from ethanol in the presence of the catalyst according to the present embodiment described above. For that purpose, a raw material containing ethanol may be brought into contact with the catalyst.
- the synthetic route from ethanol to 1,3-butadiene using the catalyst is not particularly limited, it is generally considered as follows. That is, (1) ethanol becomes acetaldehyde by dehydrogenation, (2) acetaldehyde becomes acetaldol by aldol condensation, (3) acetaldol becomes crotonaldehyde by dehydration reaction, and (4) crotonaldehyde is reduced to MPV together with ethanol. crotyl alcohol, and (5) crotyl alcohol is dehydrated to 1,3-butadiene.
- the ethanol used for production is not particularly limited, and may be, for example, bioethanol produced from biomass, or ethanol synthesized from the hydration reaction of ethylene derived from fossil fuels.
- the raw material may contain other components such as acetaldehyde together with ethanol.
- the method of contacting the raw material containing ethanol with the catalyst is not particularly limited as long as it is a method that can convert ethanol to 1,3-butadiene in the presence of the catalyst, and may be performed in the gas phase or in the liquid phase. you can go Preferably, a raw material containing ethanol is used as a gas, and the gas is passed through a catalyst bed containing the above catalyst to cause the reaction in the gas phase.
- the raw material gas may be supplied to the reaction system without being diluted, or may be supplied after being diluted with an inert gas such as nitrogen or argon.
- the reaction temperature (the temperature of the catalyst bed) is not particularly limited as long as it is a temperature at which ethanol can be converted to 1,3-butadiene.
- the reaction pressure is also not particularly limited, and may be, for example, atmospheric pressure to 1 MPa.
- the reaction system may be a continuous flow system or a batch system.
- the weight hourly space velocity (WHSV) which is the ratio of the raw material feed rate (weight/hour) to the weight of the catalyst, is not particularly limited, and may be, for example, 0.1 to 10h -1 , or 0.3 to 2h. -1 is acceptable.
- the reaction format is not particularly limited, and may be fixed bed, moving bed, or fluidized bed.
- the type of reactor is not particularly limited, and for example, a tubular reactor or the like can be used.
- the product obtained after the reaction may be purified, such as by distillation, if necessary. As a result, unreacted ethanol and by-products such as ethylene, ether, and acetaldehyde can be removed.
- Nitrogen (N 2 ) adsorption/desorption was measured using the catalyst as a sample and using “3Flex 2MP” manufactured by Micromeritics as a measuring device. Before measurement, the sample was degassed at 350° C. for 5 hours under vacuum. This measuring apparatus analyzes the pore size distribution of micropores by the HK method, and analyzes the pore size distributions of mesopores and macropores by the BJH method. The pore size distribution of Log differential pore volume distribution (dV/dlogD) was determined by measurement, and the peak pore size was determined from the obtained pore size distribution.
- dV/dlogD Log differential pore volume distribution
- Example 1 Preparation of ZnZrMFI catalyst
- 0.05 g of zinc acetate (Zn(CH 3 COO) 2.2H 2 O) and 5.21 g of tetraethoxysilane (TEOS) were added to 10 mL of ethanol and dissolved by stirring for 1 hour.
- 2.40 g of zirconium butoxide (Zr(OBu) 4 ) was added thereto and stirred for 1 hour, then 5.08 g of tetrapropylammonium hydroxide (TPAOH) and 18.69 g of water were added and mixed with stirring for 4 hours. bottom. The resulting mixed solution was heated at 90° C.
- the obtained ZnZrMFI catalyst had a peak pore size of 0.54 nm and had micropores.
- XPS X-ray photoelectron spectroscopy
- the ZnZrMFI catalyst (Zn 0.01 Zr 0.2 MFI(mi)) exhibits a higher binding energy of the Zr 3d peak than pure ZrO 2 , indicating the formation of a chemical species other than ZrO 2 .
- the two peaks of the ZnZrMFI catalyst are separated into two main peaks and two weak peaks, as shown in FIG. Two weak peaks matching the binding energies of pure ZrO 2 correspond to ZrO 2 and two main peaks shifted to higher energies correspond to Si—O—Zr.
- the ZnZrMFI catalyst (Zn 0.01 Zr 0.2 MFI(mi)) has no obvious change in the peak compared to pure ZnO, suggesting that it exists in the form of ZnO. was shown.
- the ZnZrMFI catalyst (Zn 0.01 Zr 0.2 MFI(mi)) has MFI-specific peaks indicated by "x".
- the prepared ZnZrMFI catalyst contains a silica support with an MFI-type framework structure, Zn is supported on the silica support in the form of ZnO, and Zr is contained in the form of Zr(OH)( OSi ) 3 and ZrO2. It is understood that
- Solution A was obtained by dissolving 1.91 g of cetyltrimethylammonium bromide (CTAB) in 300 mL of deionized water with stirring.
- Solution B was obtained by mixing 2.60 g of TEOS and 2.40 g of Zr(OBu) 4 in 10 mL of ethanol under stirring. Solution B was slowly added to solution A with stirring and aged overnight. The solid product was centrifuged at 2500 rpm and dried at 60° C. overnight to obtain the zirconium silicate precursor.
- CTAB cetyltrimethylammonium bromide
- a mixed solution was prepared by adding 2.60 g of TEOS to 10 mL of ethanol.
- a zirconium silicate precursor was added to the mixed solution and stirred for 1 hour.
- 5.08 g of TPAOH and 18.69 g of H 2 O were added dropwise to the mixed solution while stirring.
- the mixed solution was continuously stirred at 700 rpm for 4 hours and then heated at 90° C. for 4 hours to remove most of the water and ethanol from the mixture.
- Catalyst performance evaluation test Each of the catalysts prepared above was subjected to a catalyst performance evaluation test by a synthesis reaction of 1,3-butadiene from ethanol. The synthesis reaction was carried out under atmospheric pressure using a quartz fixed-bed flow reactor with an inner diameter of 4 mm.
- FIG. 4 The conceptual diagram of the reactor is shown in Figure 4.
- reference numeral 12 denotes a nitrogen cylinder that supplies nitrogen as a carrier gas
- reference numeral 14 denotes a syringe pump that supplies ethanol
- reference numeral 16 denotes a mass flow controller (MFC)
- reference numeral 18 denotes an evaporator
- reference numeral 20 denotes a gas. Ribbon heaters are shown as line heating for heating the outer circumference of a pipe in which the is circulated.
- Reference numeral 22 denotes a fixed bed flow type reactor
- reference numeral 24 denotes a catalyst bed in the reactor
- reference numeral 26 denotes an electric furnace for heating the reactor
- reference numeral 28 denotes a thermocouple for detecting the temperature of the catalyst bed 24.
- Thermometers (TC) are indicated respectively.
- Reference numeral 30 denotes piping through which the gas that has passed through the reactor 22 flows
- reference numeral 32 denotes a bypass route bypassing the reactor 22
- reference numeral 34 denotes a gas chromatograph (GC) for analyzing gas products
- reference numeral 36 denotes exhaust gas.
- An outlet 38 indicates a six-way valve for switching flow paths for the piping 30, the bypass route 32, the GC 34, and the exhaust gas outlet 36, respectively.
- 0.5 g of catalyst was packed in the reactor 22 to form a catalyst bed 24, and both sides of the catalyst bed 24 were packed with quartz wool 40 and fixed.
- Nitrogen was passed from the nitrogen cylinder 12 through the MFC 16 to the reactor 22 at a flow rate of 20 mL/min, and pretreatment was performed at 400° C. for 1 hour.
- GC gas chromatograph
- Shimadzu Corporation and "DB-1 column (30 m ⁇ 0.25 mm ⁇ 0 .25 ⁇ m)”
- FID flame ionization detector
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Abstract
Description
[1] エタノールから1,3-ブタジエンを合成するための触媒であって、結晶性シリカからなる多孔性のシリカ担体と、前記シリカ担体に担持されたZnOと、前記シリカ担体のシラノール基と相互作用したZrと、を含む、1,3-ブタジエン合成用触媒。
実施形態に係る触媒は、エタノールから1,3-ブタジエンを合成するための触媒であり、多孔性のシリカ担体、Zn、及びZrを含む。
上記触媒の製造方法は、特に限定されないが、水熱合成法により調製することが好ましい。
(i) 亜鉛塩とジルコニウムアルコキシドとオルトケイ酸エステルとテンプレート剤を水とともに混合する工程、
(ii) 得られた混合物を用いて水熱合成する工程、及び、
(iii) 該水熱合成により得られた反応生成物を焼成する工程。
本実施形態に係る1,3-ブタジエンの製造方法は、上述した本実施形態に係る触媒の存在下で、エタノールから1,3-ブタジエンを得ることを含む。そのためには、エタノールを含む原料を上記触媒に接触させればよい。
触媒をサンプルとし、測定装置としてMicromeritics社製「3Flex 2MP」を用いて、窒素(N2)吸着・脱着の測定を行った。なお、測定の前に、サンプルを350℃で5時間、真空状態で脱気した。この測定装置は、ミクロ孔の細孔径分布解析をHK法により、またメソ孔とマクロ孔の細孔径分布解析をBJH法により行うものである。測定によりLog微分細孔容積分布(dV/dlogD)の細孔径分布を求め、得られた細孔径分布からピーク細孔径を求めた。
10mLのエタノールに、0.05gの酢酸亜鉛(Zn(CH3COO)2・2H2O)と5.21gのテトラエトキシシラン(TEOS)を添加して1時間攪拌して溶解させた。これに2.40gのジルコニウムブトキシド(Zr(OBu)4)を加えて1時間攪拌した後、5.08gのテトラプロピルアンモニウムヒドロキシド(TPAOH)と18.69gの水を添加して4時間攪拌混合した。得られた混合溶液を90℃で4時間加熱してエタノールを留去させた後、フッ素樹脂で裏打ちされたステンレス鋼オートクレーブに移して、130℃、体積膨張に伴い自発的に発生する圧力、48時間にて水熱合成を行った。得られた反応生成物を100℃で12時間乾燥させた後、550℃で5時間、空気中で焼成することにより、ZnZrMFI触媒(モル比Zn/Si=0.01、モル比Zr/Si=0.2)を得た。
5.0gのH-beta(東ソー製「941HOA」)に13mol/L硝酸100mLを加え、100℃で12時間攪拌した後、濾過し洗浄してSi-betaを得た。5gのSi-betaと0.96gのZn(NO3)2・6H2Oと0.66gのCe(NO3)3・6H2Oを混合し微粉砕した後、500℃で6時間、空気中で焼成した。これにより、ZnCe/beta触媒(Zn含有量=5.0質量%、Ce含有量=5.0質量%)を得た。
1.91gのセチルトリメチルアンモニウムブロミド(CTAB)を撹拌しながら300mLの脱イオン水に溶解して溶液Aを得た。2.60gのTEOSおよび2.40gのZr(OBu)4を撹拌下で10mLのエタノールに混合して溶液Bを得た。溶液Bを攪拌しながら溶液Aにゆっくりと加え、一晩熟成させた。固体生成物を2500rpmで遠心分離し、60℃で一晩乾燥させて、ケイ酸ジルコニウム前駆体を得た。
上記で調製した各触媒について、エタノールから1,3-ブタジエンの合成反応による触媒性能評価試験を行った。該合成反応は、大気圧下で内径4mmの石英製の固定床流通反応器を用いて実施した。
Claims (12)
- エタノールから1,3-ブタジエンを合成するための触媒であって、
結晶性シリカからなる多孔性のシリカ担体と、前記シリカ担体に担持されたZnOと、前記シリカ担体のシラノール基と相互作用したZrと、を含む、1,3-ブタジエン合成用触媒。 - 細孔径2nm以下のミクロ孔を有する、請求項1に記載の1,3-ブタジエン合成用触媒。
- 前記シリカ担体がMFI型の骨格構造を有する、請求項1又は2に記載の1,3-ブタジエン合成用触媒。
- ZnとSiのモル比Zn/Siが0.001~0.1であり、ZrとSiのモル比Zr/Siが0.05~0.5である、請求項1~3のいずれか1項に記載の1,3-ブタジエン合成用触媒。
- 亜鉛塩とジルコニウムアルコキシドとオルトケイ酸エステルとテンプレート剤を水とともに混合し、更に水熱合成し、焼成して得られる触媒である、請求項1~4のいずれか1項に記載の1,3-ブタジエン合成用触媒。
- 前記テンプレート剤がテトラプロピルアンモニウムヒドロキシドである、請求項5に記載の1,3-ブタジエン合成用触媒。
- 結晶性シリカからなる多孔性のシリカ担体と前記シリカ担体に担持されたZnOと前記シリカ担体のシラノール基と相互作用したZrとを含む触媒の存在下で、エタノールから1,3-ブタジエンを得ることを含む、1,3-ブタジエンの製造方法。
- 前記触媒が細孔径2nm以下のミクロ孔を有する、請求項7に記載の1,3-ブタジエンの製造方法。
- 前記触媒は、前記シリカ担体がMFI型の骨格構造を有する、請求項7又は8に記載の1,3-ブタジエンの製造方法。
- 前記触媒は、ZnとSiのモル比Zn/Siが0.001~0.1であり、ZrとSiのモル比Zr/Siが0.05~0.5である、請求項7~9のいずれか1項に記載の1,3-ブタジエンの製造方法。
- エタノールから1,3-ブタジエンを合成するための1,3-ブタジエン合成用触媒の製造方法であって、
亜鉛塩とジルコニウムアルコキシドとオルトケイ酸エステルとテンプレート剤を水とともに混合すること、
得られた混合物を用いて水熱合成すること、及び、
前記水熱合成により得られた反応生成物を焼成すること
を含む1,3-ブタジエン合成用触媒の製造方法。 - 前記テンプレート剤がテトラプロピルアンモニウムヒドロキシドである、請求項11に記載の1,3-ブタジエン合成用触媒の製造方法。
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