WO2015190754A1 - 다성분계 복합금속산화물 촉매의 제조방법 - Google Patents
다성분계 복합금속산화물 촉매의 제조방법 Download PDFInfo
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- WO2015190754A1 WO2015190754A1 PCT/KR2015/005625 KR2015005625W WO2015190754A1 WO 2015190754 A1 WO2015190754 A1 WO 2015190754A1 KR 2015005625 W KR2015005625 W KR 2015005625W WO 2015190754 A1 WO2015190754 A1 WO 2015190754A1
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- WIPO (PCT)
- Prior art keywords
- solution
- bismuth
- metal oxide
- oxide catalyst
- composite metal
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- 239000003054 catalyst Substances 0.000 title claims abstract description 170
- 239000002131 composite material Substances 0.000 title claims abstract description 87
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 84
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 109
- 239000002184 metal Substances 0.000 claims abstract description 107
- BYUANIDVEAKBHT-UHFFFAOYSA-N [Mo].[Bi] Chemical compound [Mo].[Bi] BYUANIDVEAKBHT-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000000975 co-precipitation Methods 0.000 claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 239000000376 reactant Substances 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims description 144
- 239000002243 precursor Substances 0.000 claims description 88
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 86
- 150000001768 cations Chemical class 0.000 claims description 51
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 32
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims description 29
- 229910052750 molybdenum Inorganic materials 0.000 claims description 29
- 239000011733 molybdenum Substances 0.000 claims description 29
- 229910052797 bismuth Inorganic materials 0.000 claims description 23
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 23
- 125000002091 cationic group Chemical group 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000005839 oxidative dehydrogenation reaction Methods 0.000 claims description 21
- 229910052684 Cerium Inorganic materials 0.000 claims description 16
- 229910052726 zirconium Inorganic materials 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 229910052700 potassium Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000003637 basic solution Substances 0.000 claims description 3
- 229910052792 caesium Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052730 francium Inorganic materials 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052701 rubidium Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000007809 chemical reaction catalyst Substances 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 19
- 238000006555 catalytic reaction Methods 0.000 abstract description 11
- 239000000047 product Substances 0.000 abstract description 7
- 239000006227 byproduct Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract 1
- 125000004430 oxygen atom Chemical group O* 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 31
- 239000001301 oxygen Substances 0.000 description 31
- 229910052760 oxygen Inorganic materials 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000002904 solvent Substances 0.000 description 14
- 239000012153 distilled water Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 238000006356 dehydrogenation reaction Methods 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 8
- 239000011591 potassium Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000295 fuel oil Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 239000003929 acidic solution Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004230 steam cracking Methods 0.000 description 4
- 229910004625 Ce—Zr Inorganic materials 0.000 description 3
- FBXVOTBTGXARNA-UHFFFAOYSA-N bismuth;trinitrate;pentahydrate Chemical compound O.O.O.O.O.[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FBXVOTBTGXARNA-UHFFFAOYSA-N 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- HVENHVMWDAPFTH-UHFFFAOYSA-N iron(3+) trinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HVENHVMWDAPFTH-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CBRVNNFPYLQDQN-UHFFFAOYSA-N zirconium(4+) tetranitrate hexahydrate Chemical compound O.O.O.O.O.O.[N+](=O)([O-])[O-].[Zr+4].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] CBRVNNFPYLQDQN-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 229910002492 Ce(NO3)3·6H2O Inorganic materials 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229910000608 Fe(NO3)3.9H2O Inorganic materials 0.000 description 2
- TUSCEHXFDUYOAZ-UHFFFAOYSA-N N.O.O.O.O.[Mo+4] Chemical compound N.O.O.O.O.[Mo+4] TUSCEHXFDUYOAZ-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000012695 Ce precursor Substances 0.000 description 1
- 229910002554 Fe(NO3)3·9H2O Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- WJGAPUXHSQQWQF-UHFFFAOYSA-N acetic acid;hydrochloride Chemical compound Cl.CC(O)=O WJGAPUXHSQQWQF-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 description 1
- 239000011609 ammonium molybdate Substances 0.000 description 1
- 229940010552 ammonium molybdate Drugs 0.000 description 1
- 235000018660 ammonium molybdate Nutrition 0.000 description 1
- 239000012378 ammonium molybdate tetrahydrate Substances 0.000 description 1
- FIXLYHHVMHXSCP-UHFFFAOYSA-H azane;dihydroxy(dioxo)molybdenum;trioxomolybdenum;tetrahydrate Chemical compound N.N.N.N.N.N.O.O.O.O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O FIXLYHHVMHXSCP-UHFFFAOYSA-H 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QDOAVFZGLCBVQL-UHFFFAOYSA-N bismuth Chemical compound [Bi].[Bi].[Bi] QDOAVFZGLCBVQL-UHFFFAOYSA-N 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000012974 tin catalyst Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
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- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
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- 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
- C07C2523/31—Chromium, molybdenum or tungsten combined with bismuth
-
- 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
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
- C07C2523/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/85—Chromium, molybdenum or tungsten
- C07C2523/88—Molybdenum
- C07C2523/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
Definitions
- the present invention is a method for preparing a second solution by dropwise adding a first solution of a divalent or trivalent cation metal precursor solution, a monovalent cation metal precursor solution, and a bismuth precursor solution to a molybdenum precursor solution and firstly coprecipitation, and oxygen storage properties. And dropping a third solution containing a tetravalent cation metal having oxygen mobility into the second solution and co-precipitating a second component, thereby preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst.
- the present invention relates to a component-based bismuth-molybdenum composite metal oxide catalyst.
- the selective oxidation of olefins is an important step in the petrochemical industry, which allows the production of intermediate base materials for the production of various products from olefin raw materials obtained from crude oil.
- a process for producing styrene from ethylbenzene and a process for producing 1,3-butadiene from normal-butane or normal-butene has been underway in recent years as the demand for the base material for manufacturing synthetic rubber has risen. .
- the demand for 1,3-butadiene is soaring, so the technology to secure it is required.
- 1,3-Butadiene is a colorless, odorless flammable gas that liquefies easily and is easily flammable.It is a petroleum chemical, such as styrene-butadiene rubber (SBR), polybutadiene rubber (BR), and acrylonitrile.
- SBR styrene-butadiene rubber
- BR polybutadiene rubber
- ABS acrylonitrile
- -Butadiene-styrene rubber ABS is a very important basic oil that is a raw material for synthetic rubber.
- Methods for producing 1,3-butadiene include naphtha cracking, direct dehydrogenation of normal-butenes, and oxidative dehydrogenation of normal-butenes.
- the naphtha cracking process which is responsible for more than 90% of the 1,3-butadiene supplied to the market, selectively extracts 1,3-butadiene from the base oil produced from the crackers in the steam cracking process for ethylene production. Is done.
- the production of 1,3-butadiene by the steam cracking process is an effective process for producing 1,3-butadiene because the main purpose of the steam cracking process is to produce basic oils other than 1,3-butadiene such as ethylene.
- the dehydrogenation reaction of normal-butene includes direct dehydrogenation and oxidative dehydrogenation reaction.
- the direct dehydrogenation reaction of normal-butene is obtained by removing a minority from normal-butene to obtain 1,3-butadiene.
- the reaction is thermodynamically disadvantageous, and thus the conversion is limited. Therefore, a high temperature reaction condition is required, and even if the conversion is increased by increasing the temperature, side reactions such as an idealization reaction increase with increasing temperature, resulting in a lower yield of 1,3-butadiene. there is a problem.
- the oxidative dehydrogenation reaction of normal-butene which produces butadiene through oxidative dehydrogenation (ODH) of normal-butene, produces 1,3-butadiene and water as normal-butene reacts with oxygen.
- ODH oxidative dehydrogenation
- stable water is produced after the reaction, which is not only thermodynamically advantageous, but, unlike the direct dehydrogenation reaction, it is exothermic so that a high yield of 1,3-butadiene can be obtained at a lower reaction temperature than the direct dehydrogenation reaction. Therefore, the process of producing 1,3-butadiene through oxidative dehydrogenation of normal-butene can be seen as an effective single production process that can meet the increasing demand for 1,3-butadiene.
- oxidative dehydrogenation is an effective process for producing 1,3-butadiene alone, there are disadvantages in that many side reactions such as complete oxidation occur because oxygen is used as a reactant. Therefore, it is necessary to develop a catalyst having high selectivity of 1,3-butadiene while maintaining high activity through proper oxidation capacity control.
- catalysts used for oxidative dehydrogenation of normal-butenes known to date include ferrite catalysts, tin catalysts, and bismuth-molybdenum catalysts.
- bismuth-molybdenum-based catalysts include bismuth-molybdenum catalysts composed solely of bismuth and molybdenum metal oxides and multicomponent bismuth-molybdenum catalysts in which various metal components are added based on bismuth and molybdenum.
- Pure bismuth-molybdenum catalysts have various phases depending on the atomic ratio of bismuth to molybdenum, such as ⁇ -bismuth molybdenum (Bi 2 Mo 3 O 12 ), ⁇ -bismuth molybdenum (Bi 2 Mo 2 O 9 ) and Three phases of ⁇ -bismuth molybdenum (Bi 2 MoO 6 ) are known to be available as the catalyst.
- pure bismuth-molybdenum catalysts in single phase are not suitable for the commercialization process for producing 1,3-butadiene via oxidative dehydrogenation of normal-butene due to their low activity.
- a multicomponent bismuth-molybdenum catalyst having various metal components other than bismuth and molybdenum has been added.
- a composite oxide catalyst composed of nickel, cesium, bismuth and molybdenum a composite oxide catalyst composed of cobalt, iron, bismuth, magnesium, potassium, and molybdenum
- the conventional multicomponent bismuth-molybdenum catalyst as described above is prepared by one-step coprecipitation of various metal precursors.
- the multicomponent bismuth-molybdenum catalyst having complex constituents is prepared by one-step coprecipitation, it is difficult to form the catalyst components uniformly, resulting in poor reproducibility of the catalyst preparation, and low catalyst specific surface area, resulting in low catalytic activity per unit mass.
- the economy is falling.
- the catalytic activity is lowered when the reaction is performed at a temperature of 320 ° C. to 520 ° C. or less, which is a conventional reaction temperature range in order to reduce energy consumption and increase economy. Therefore, in order to increase the economic efficiency, a technique capable of forming a catalyst component uniformly and producing a catalyst that does not degrade catalyst activity under relatively low temperature conditions is required.
- the present inventors are studying a method for preparing a catalyst which can control the appropriate oxidation capacity without degrading the catalytic activity even at a relatively low temperature, while divalent or trivalent cation metal element precursors and monovalent cation metal elements Adding a first solution containing a precursor and a bismuth precursor to a solution containing a molybdenum precursor and firstly coprecipitation to prepare a second solution, and a third solution comprising a tetravalent cationic metal element precursor represented by Formula 2
- the multicomponent bismuth-molybdenum composite metal oxide catalyst prepared by the manufacturing method consisting of a two-step coprecipitation process including dropping and secondary coprecipitation shows relatively the same structure as a conventional four-component bismuth-molybdenum catalyst at a relatively low temperature. Completion of the present invention by confirming excellent catalytic activity even under phosphorus conditions. It was.
- Another object of the present invention is to provide a multicomponent bismuth-molybdenum composite metal oxide catalyst prepared through the two-step coprecipitation step.
- Still another object of the present invention is to provide a method for preparing 1,3-butadiene using the multicomponent bismuth-molybdenum composite metal oxide catalyst.
- the present invention comprises the steps of preparing a first solution by mixing a divalent or trivalent cation metal precursor solution, a monovalent cation metal precursor solution and a bismuth precursor solution (step 1); Adding a first solution dropwise to the molybdenum precursor solution and first coprecipitation to prepare a second solution (step 2); Preparing a fourth solution by dropwise adding a third solution including a tetravalent cationic metal precursor during the aging process of the second solution and performing secondary coprecipitation (step 3); And it provides a method for producing a multi-component bismuth- molybdenum composite metal oxide catalyst represented by the following formula (1) comprising the step (step 4) after drying the fourth solution.
- C is a divalent or trivalent cation metal element
- D is a monovalent cation metal element
- E is a tetravalent cation metal element
- a is 5-20, b is 0.1-2, c is 1-5, d is 1-10, e is a real number of 0.1-1, f is a value determined in order to match a valence by another component.
- the present invention provides a multi-component bismuth- molybdenum composite metal oxide catalyst represented by the formula (1) prepared by the above production method.
- the present invention comprises the step of filling the reactor of the multi-component bismuth- molybdenum composite metal oxide catalyst in the fixed phase (step A); And advancing an oxidative-dehydrogenation reaction while continuously passing a reactant containing a C4 compound including normal butene into the catalyst layer of the reactor filled with the catalyst (step B).
- step A the step of filling the reactor of the multi-component bismuth- molybdenum composite metal oxide catalyst in the fixed phase
- step B advancing an oxidative-dehydrogenation reaction while continuously passing a reactant containing a C4 compound including normal butene into the catalyst layer of the reactor filled with the catalyst
- the method for preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst according to the present invention is easy to uniformly form metal components in the catalyst by dividing the metal component constituting the catalyst into two stages by primary and secondary coprecipitation. Reproducibility of catalyst preparation can be excellent.
- the multi-component bismuth-molybdenum composite metal oxide catalyst prepared by the above production method may have almost the same structure as the four-component bismuth-molybdenum catalyst, and thus, lowering of catalytic activity due to the modification of the catalyst structure may be suppressed, and oxygen storage properties and A component having oxygen mobility can be included without modifying the structure of the catalyst to have high hydrothermal stability, and to control the number of catalytic lattice oxygen consumed during the reaction, thereby increasing the catalytic activity, particularly at a relatively low temperature. In the catalytic reaction process under conditions, it is possible to reduce the production of by-products and to improve the conversion of the reactants and the yield of the desired product.
- the method for preparing the multicomponent bismuth-molybdenum composite metal oxide catalyst and the catalyst prepared therefrom according to the present invention can be easily applied to industries in need thereof, especially 1,3-butadiene production industry.
- FIG. 1 is a flowchart schematically showing a method for preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst according to an embodiment of the present invention.
- FIG. 2 is a graph showing an XRD analysis result of a multicomponent bismuth-molybdenum composite metal oxide catalyst according to an embodiment of the present invention.
- 3 is a six-component bismuth-molybdenum composite metal oxide catalyst prepared by two-step coprecipitation according to an embodiment of the present invention (example), a four-component bismuth-molybdenum composite metal oxide catalyst (comparative example 1) and one step It is a graph showing the conversion rate of 1-butene in each catalytic reaction process using a six-component bismuth- molybdenum composite metal oxide catalyst (Comparative Example 2) prepared by coprecipitation.
- Figure 4 is a six-component bismuth- molybdenum composite metal oxide catalyst (Example), four-component bismuth- molybdenum composite metal oxide catalyst prepared by a two-step coprecipitation according to an embodiment of the present invention (Comparative Example 1) and one step It is a graph showing the yield of 1,3-butadiene in each catalytic reaction process using the six-component bismuth- molybdenum composite metal oxide catalyst (Comparative Example 2) prepared by coprecipitation.
- Example 5 is a six-component bismuth-molybdenum composite metal oxide catalyst (Example), a four-component bismuth-molybdenum composite metal oxide catalyst prepared by two-step coprecipitation according to an embodiment of the present invention (Comparative Example 1) and one step It is a graph showing the selectivity of 1,3-butadiene in each catalytic reaction process using a six-component bismuth-molybdenum composite metal oxide catalyst (Comparative Example 2) prepared by coprecipitation.
- Example 6 is a six-component bismuth-molybdenum composite metal oxide catalyst (Example), a four-component bismuth-molybdenum composite metal oxide catalyst prepared by two-step coprecipitation according to an embodiment of the present invention (Comparative Example 1) and one step It is a graph showing the selectivity of COx in each catalytic reaction process using the six-component bismuth-molybdenum composite metal oxide catalyst (Comparative Example 2) prepared by coprecipitation.
- Example 7 is a six-component bismuth-molybdenum composite metal oxide catalyst (Example), a four-component bismuth-molybdenum composite metal oxide catalyst prepared by two-step coprecipitation according to an embodiment of the present invention (Comparative Example 1) and one step It is a graph showing the selectivity of heavy oil in each catalytic reaction process using the six-component bismuth-molybdenum composite metal oxide catalyst (Comparative Example 2) prepared by coprecipitation.
- the present invention is to drop the first solution containing a divalent or trivalent cationic metal precursor, monovalent cation metal precursor, bismuth precursor dropwise to the molybdenum precursor solution and to first coprecipitation to prepare a second solution,
- a method for preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst having excellent activity even in a catalytic reaction process at a relatively low temperature condition including dropwise addition and secondary coprecipitation of a third solution containing a cationic metal precursor.
- methods for preparing 1,3-butadiene include naphtha cracking process, direct dehydrogenation reaction of normal-butene, and oxidative dehydrogenation reaction of normal-butene, among which oxidative decomposition of normal-butene is performed.
- the dehydrogenation process is thermodynamically advantageous because stable water is produced as a product.
- the oxidative dehydrogenation process is exothermic, unlike the direct dehydrogenation process, so that 1,3-butadiene with a relatively good yield can be obtained at a temperature of 320 ° C. to 520 ° C., which is relatively lower than the direct dehydrogenation process. It is spotlighted as an effective process.
- the oxidative dehydrogenation reaction process has a disadvantage in that many side reactions such as complete oxidation reactions occur because oxygen is used as a reactant as described above. It is necessary to develop a catalyst having high selectivity of 1,3-butadiene while maintaining a high conversion rate and yield even at a lower reaction temperature in order to be applied to a more efficient and economical commercialization process.
- ferrite-based catalysts tin-based catalysts
- bismuth-molybdenum-based catalysts use a single-phase pure bismuth-molybdenum catalyst, but have low catalytic activity. There is a difficulty in commercialization.
- a multicomponent bismuth-molybdenum catalyst having various metal components added thereto has been proposed.
- the present invention facilitates uniform formation of the metal components constituting the catalyst in the catalyst, so that the catalyst is reproducible, and the oxidation capacity is appropriately maintained without causing deformation to the structure of the conventional four-component bismuth-molybdenum catalyst. It provides a method for producing a multi-component bismuth- molybdenum composite metal oxide catalyst comprising a secondary coprecipitation step, which can be adjusted to have excellent catalytic activity even at a reaction temperature relatively lower than the conventional reaction temperature.
- Method for preparing a multi-component bismuth- molybdenum composite metal oxide catalyst represented by the formula (1) by mixing a divalent or trivalent cationic metal precursor solution, monovalent cation metal precursor solution and bismuth precursor solution Preparing a first solution (step 1); Adding a first solution dropwise to the molybdenum precursor solution and first coprecipitation to prepare a second solution (step 2); Preparing a fourth solution by dropwise adding a third solution including a tetravalent cationic metal precursor during the aging process of the second solution and performing secondary coprecipitation (step 3); And baking the fourth solution after drying (step 4).
- C is a divalent or trivalent cation metal element
- D is a monovalent cation metal element
- E is a tetravalent cation metal element
- a is 5-20
- b is 0.1-2
- c is 1-5
- d is 1 to 10
- e is a real number of 0.1 to 1
- f is a value determined for matching valency by other components.
- step 1 in order to mix the bivalent or trivalent cation metal component, the monovalent cation metal component and the bismuth metal component constituting the bismuth-molybdenum composite metal oxide catalyst, the precursor material of each metal component is mixed in a solvent Preparing a first solution.
- the first solution may be preferably prepared by dissolving the precursors of the respective metal components in a solvent so as to uniformly mix the metal components to prepare the respective metal precursor solutions and mixing them.
- the precursor of the divalent or trivalent cationic metal represented by C in Chemical Formula 1 is dissolved in a solvent to prepare a divalent or trivalent cationic metal precursor solution, and is separated from the 1 represented by D in Chemical Formula 1
- the precursor of the cationic metal is dissolved in a solvent to prepare a monovalent cationic metal precursor solution.
- the divalent or trivalent cation metal precursor solution and the monovalent cation metal precursor solution may be prepared separately by dissolving in the solvent as described above, but the precursor of the divalent or trivalent cation metal and the monovalent cation metal
- the precursor solution may be prepared by dissolving the precursor in one solvent at the same time.
- the solvent may be distilled water, but is not limited thereto.
- an acidic solution may be further added to increase the solubility according to the precursors of the respective metal elements, and the acidic solution may be, for example, nitric acid.
- the divalent or trivalent cation metal represented by C in Formula 1 is at least one metal selected from the group consisting of Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge and As. Can be.
- the monovalent cation metal represented by D in Chemical Formula 1 may be at least one metal element selected from the group consisting of Li, Na, K, Rb, Cs, and Fr.
- the divalent or trivalent cation metal represented by C is Fe
- the monovalent cation metal represented by D may be K.
- the precursor of the divalent or trivalent cation metal and the precursor of the monovalent cation metal are not particularly limited and may be those conventionally used in the art, but for example, ammonium chloride and carbonate of each metal. , Nitrate, acetate, oxide, and the like.
- the bismuth precursor solution may be prepared by dissolving a precursor of bismuth metal in a solvent like the divalent or trivalent cation metal precursor solution and the monovalent cation metal precursor solution, and the solvent may be distilled water, an aqueous solution of nitrate, or a mixture thereof. However, it is not particularly limited. When the solvent is distilled water, an acidic solution may be further added to increase the solubility of the bismuth metal precursor, wherein the acidic solution is as described above.
- the precursor of the bismuth metal is not particularly limited and may be one commonly used in the art, but may be, for example, bismuth nitrate.
- the first solution in which each metal component is uniformly mixed may be prepared by mixing the divalent or trivalent cation precursor solution, the monovalent cation precursor solution, and the bismuth precursor solution prepared by the above method.
- the mixing is not particularly limited and may be carried out through a method commonly used in the art, for example, may be performed by stirring.
- the first solution is added dropwise to the molybdenum precursor solution and firstly coprecipitated to prepare a second solution.
- the molybdenum precursor solution may be prepared by dissolving a precursor of molybdenum metal in a solvent, and the solvent may be distilled water, but is not limited thereto.
- the precursor of the molybdenum metal is not particularly limited and may be one commonly used in the art, but may be, for example, ammonium molybdate.
- the second solution may be prepared by dropwise addition of the first solution to the molybdenum precursor solution prepared by the above method and first coprecipitation.
- the first coprecipitation may be performed by slowly dropping (injecting) the first solution at a constant rate into the molybdenum precursor solution while stirring.
- Step 3 includes a tetravalent cation metal precursor while aging the second solution to co-precipitate the tetravalent cationic metal while carrying out a aging process to sufficiently coprecipitate the metal contained in the second solution.
- a third solution is added dropwise and secondary coprecipitation to prepare a fourth solution.
- the aging process is not particularly limited, but may be performed by stirring for 30 minutes to 24 hours while maintaining a temperature of 80 ° C to 200 ° C.
- the stirring may be for 1 hour to 2 hours.
- the third solution including the tetravalent cation metal precursor is prepared by adding a basic solution to the tetravalent cation metal element precursor solution dropwise to pH 5 to 9 to prepare a coprecipitation solution; And it can be prepared by the step of aging by stirring the coprecipitation solution for 30 minutes to 24 hours.
- the tetravalent cation metal precursor solution may be a solution of a precursor of the tetravalent cation metal in a solvent, the solvent may be distilled water.
- the tetravalent cationic metal is represented by E in the formula (1), it may be preferably represented by the formula (2).
- g is a real number from 0.5 to 1.
- the tetravalent cation metal may be Ce (cerium), or a mixture of Ce and Zr (zirconium), preferably a mixture of Ce and Zr.
- the oxygen storage capability of the multicomponent bismuth-molybdenum composite metal oxide catalyst including the same may be improved by an oxygen storage capacity of Ce, and the tetravalent cationic metal is Ce
- the tetravalent cationic metal is Ce
- Zr mixing it is possible to increase the activity of the multi-component bismuth- molybdenum composite metal oxide catalyst including Zr is mixed with Ce to increase the oxygen mobility of the catalyst.
- the tetravalent cationic metal element according to the present invention improves the oxygen storage of the multicomponent bismuth-molybdenum composite metal oxide catalyst including the same as the material having an oxygen storage function, thereby increasing the active point of the catalyst. It is possible to improve the catalytic activity.
- Zr increases the oxygen mobility in the catalyst, that is, by adjusting the number of lattice oxygen consumed during the reaction can further improve the activity of the catalyst. Thus, it can have excellent catalytic activity even at a relatively low reaction temperature.
- the oxygen storage and oxygen mobility of the multicomponent bismuth-molybdenum composite metal oxide catalyst including the same can be appropriately adjusted to control the number of lattice oxygen consumed in the reaction, thus increasing the hydrothermal capacity. It may have stability, the production of by-products in the catalytic reaction process using the catalyst can be reduced and the conversion rate of the reactants and the yield of the desired product can be further improved.
- the precursor of the tetravalent cation metal is not particularly limited and may be one commonly used in the art, but for example, ammonium chloride, carbonate, nitrate, and acetate chloride of the metal. ), Oxide, and the like.
- the third solution may be prepared by dropping a basic solution into a tetravalent cation metal precursor solution, preparing a coprecipitation solution by adjusting pH, and then ripening the coprecipitation solution.
- a basic solution into a tetravalent cation metal precursor solution
- a coprecipitation solution by adjusting pH
- ripening the coprecipitation solution may be an aqueous sodium hydroxide solution, aqueous ammonia, aqueous sodium carbonate solution or aqueous potassium carbonate solution.
- the pH may be 5 to 9, preferably 7 to 8.
- the aging is not particularly limited, but may be carried out by stirring for 30 minutes to 24 hours, preferably 1 hour to 2 hours.
- the fourth solution according to the present invention may be prepared by dropwise addition of the third solution prepared by the above method to the second solution in the aging process and secondary coprecipitation. In this case, it may be preferable to slowly inject the third solution dropwise into the second solution at a constant speed.
- the third solution may be co-precipitated during the aging process of the second solution, mixed with the second solution, and aged together.
- Step 4 is a step of drying and calcining the fourth solution in order to obtain a multicomponent bismuth-molybdenum composite metal oxide catalyst from the prepared fourth solution.
- the drying may be performed by heat treatment at 150 ° C. to 200 ° C. for 10 hours to 24 hours after removing the liquid component from the fourth solution, but is not limited thereto.
- the method for removing the liquid component is not particularly limited and may be a method commonly used in the art, for example, the liquid component may be removed using a vacuum or centrifugal concentrator.
- the firing may be carried out by heat treatment at 400 °C to 600 °C under an air atmosphere.
- the production method according to the present invention does not co-precipitate a metal component at a time, but the first co-precipitated metal catalyst component (four-component bismuth-molybdenum catalyst metal component) and the second by co-precipitation divided into two stages of the first and second co-precipitation
- the metal catalyst components (Ce-Zr or Ce) mixed by coprecipitation are uniformly mixed to increase the reproducibility of the catalyst production, and maintain the almost same structure as the conventional four-component bismuth-molybdenum catalyst. It is possible to suppress the decrease in catalyst activity due to the catalyst structure modification.
- the present invention provides a multicomponent bismuth-molybdenum composite metal oxide catalyst represented by the following Chemical Formula 1 prepared by the above method.
- the metal component constituting the multi-component bismuth-molybdenum composite metal oxide catalyst is in the above ratio, the mechanical strength and hydrothermal stability of the catalyst are improved, and the oxygen storage and oxygen mobility in the catalyst are appropriately controlled so that the catalytic reaction process using the same The production of by-products can be reduced and the conversion of the reactants and the yield of the desired product can be improved.
- the catalyst may be an oxidative-dehydrogenation catalyst, and preferably may be an oxidative-dehydrogenation catalyst for preparing 1,3-butadiene.
- the present invention provides a method for producing 1,3-butadiene using the multicomponent bismuth-molybdenum composite metal oxide catalyst.
- Method for producing 1,3-butadiene according to an embodiment of the present invention is characterized in that it comprises the following steps:
- step A Filling a multi-component bismuth-molybdenum composite metal oxide catalyst into the reactor in a fixed phase (step A);
- step B Carrying out an oxidative-dehydrogenation reaction while continuously passing a reactant containing a C4 compound comprising normal butene through the catalyst bed of the reactor filled with the catalyst.
- the oxidative-dehydrogenation reaction may be performed at a reaction temperature of 250 ° C. to 380 ° C. and a space velocity of 50 h ⁇ 1 to 2000 h ⁇ 1 based on the normal butene.
- a six-component bismuth-molybdenum composite metal oxide catalyst was prepared by a manufacturing method through a two-step coprecipitation process including a first co-precipitation and a second co-precipitation step.
- iron nitrate hexahydrate (Fe (NO 3 ) 3 .9H 2 O) and potassium nitrate (KNO 3 ) were dissolved in distilled water to prepare a mixed solution of iron and potassium precursors.
- bismuth nitrate pentahydrate (Bi (NO 3 ) 3 .5H 2 O) was dissolved in an aqueous solution of nitrate to prepare a bismuth precursor solution, and the iron and potassium precursor mixed solution was added dropwise thereto to prepare a first solution. It was.
- the first solution was slowly added dropwise to the molybdenum precursor solution prepared by dissolving ammonium molybdenum tetrahydrate ((NH 4 ) 6 (Mo 7 O 24 ) .4H 2 O) in distilled water, followed by first coprecipitation to prepare a second solution.
- the second solution was aged by stirring for 2 hours while maintaining 100 ° C.
- cerium nitrate hexahydrate (Ce (NO 3 ) 3 ⁇ 6H 2 O) and zirconium nitrate hexahydrate (ZrO (NO 3 ) 2 ⁇ 6H 2 O) were dissolved in distilled water in a separate reaction vessel, and 0.1 N sodium hydroxide was dissolved. After the pH was adjusted to 7 by adding an aqueous solution, the mixture was stirred for 1 hour to prepare a third solution including a cerium precursor and a zirconium precursor. The solution was gradually added dropwise to the second solution under aging, followed by secondary coprecipitation to obtain a fourth solution. Prepared.
- the third solution was prepared by adding a precursor material of each metal so that the molar ratio of Ce and Zr was 0.65: 0.35. Vapor-evaporation of the fourth solution is completed to remove moisture and other liquid components to obtain a solid, which is dried for 8 hours at 180 °C and calcined at 450 °C in an air atmosphere for 6 hours bismuth- A molybdenum composite metal oxide catalyst [Mo 10 Bi 1 Fe 3 K 1 Ce 0.1 Zr 0.05 O 37 ] was prepared.
- Iron nitrate hexahydrate (Fe (NO 3 ) 3 .9H 2 O) and potassium nitrate (KNO 3 ) were dissolved in distilled water to prepare a mixed solution of iron and potassium precursors.
- bismuth nitrate pentahydrate (Bi (NO 3 ) 3 .5H 2 O) was dissolved in an aqueous solution of nitrate to prepare a bismuth precursor solution, and the iron and potassium precursor mixed solution was added dropwise thereto to prepare a first solution. It was.
- Iron nitrate hexahydrate (Fe (NO 3 ) 3 ⁇ 9H 2 O), potassium nitrate (KNO 3 ), cerium nitrate hexahydrate (Ce (NO 3 ) 3 ⁇ 6H 2 O) and zirconium nitrate hexahydrate (ZrO (NO 3) 2 ) 6H 2 O) was dissolved in distilled water to prepare a mixed solution of iron, potassium, cerium and zirconium precursors.
- the cerium nitrate hexahydrate and zirconium nitrate hexahydrate were added so that cerium and zirconium may have a molar ratio of 0.65: 0.35 in the final catalyst.
- bismuth nitrate pentahydrate (Bi (NO 3 ) 3 .5H 2 O) was dissolved in an aqueous solution of nitrate to prepare a bismuth precursor solution, and the iron and potassium precursor mixed solution was added dropwise thereto to prepare a first solution. It was. Thereafter, the first solution was slowly added dropwise to the molybdenum precursor solution prepared by dissolving ammonium molybdenum tetrahydrate ((NH 4 ) 6 (Mo 7 O 24 ) .4H 2 O) in distilled water to prepare a second solution. . In order to allow sufficient coprecipitation of the metal component in the second solution, the second solution was aged by stirring for 2 hours while maintaining 100 ° C.
- Vapor-evaporation of the second solution is completed to remove the moisture and other liquid components to obtain a solid, which is dried for 8 hours at 180 °C and calcined at 450 °C in an air atmosphere for 6 hours bismuth- A molybdenum composite metal oxide catalyst [Mo 10 Bi 1 Fe 3 K 1 Ce 0.1 Zr 0.05 O 37 ] was prepared.
- X-ray diffraction analysis was performed to compare the structural characteristics of the six-component bismuth-molybdenum composite metal oxide catalyst prepared in Example and the four-component bismuth-molybdenum composite metal oxide catalyst prepared in Comparative Example 1. The results are shown in FIG. 2.
- X-ray diffraction analysis was performed using Bruker AXS D4 Endeavor XRD (voltage 40 kV, current 40 mA, Cu-target tube, wavelength 1.5418 ⁇ , LynxEye position sensitive detector (3.7 ° slit)), using FDS 0.5, 2 theta 10 It was measured at 87.5 second intervals every 0.02 ° from ° to 100 °.
- the six-component bismuth-molybdenum composite metal oxide catalyst of the above-described embodiment prepared through the method of manufacturing by secondary coprecipitation according to the present invention does not include a tetravalent cationic bismuth-molybdenum composite metal. It showed almost the same structure as the oxide catalyst (Comparative Example 1). This means that by co-precipitation in two stages without co-precipitation of the metal components constituting the catalyst, it is possible not to cause deformation in the catalyst structure, thus indicating that it is possible to prevent the degradation of catalyst activity due to the structural modification.
- 1-butene and oxygen were used as reactants, and additionally nitrogen and steam were introduced together.
- a metal tubular reactor was used as the reactor.
- the proportion of reactants and gas space velocity (GHSV) are described based on 1-butene.
- 1-butene: oxygen: steam: nitrogen ratio of 1: 1: 4: 4 was set to 12, the gas space velocity was controlled constant at 100 h -1.
- the volume of the catalyst layer in contact with the reactants was fixed at 200 cc, and steam was injected into the vaporizer in the form of water, vaporized at 340 ° C. with steam, mixed with other reactants, 1-butene and oxygen, to be introduced into the reactor.
- the device was designed.
- the amount of 1-butene was controlled using a mass flow controller for liquid, oxygen and nitrogen were controlled using a mass flow controller for gas, and the amount of steam was controlled using a liquid pump.
- the reaction was carried out by changing the reaction temperature, the reaction proceeded for 6 hours while maintaining 320 °C at 12 psig pressure to continue the reaction by lowering the temperature to 300 °C. After reaction the product was analyzed using gas chromatography. The conversion of 1-butene and the yield of 1,3-butadiene were calculated by the following Equations 1 and 2, respectively. The results are shown in Table 1 and FIGS. 3 to 7.
- the six-component bismuth-molybdenum composite metal oxide catalyst of the embodiment prepared through the method of the second coprecipitation according to the present invention does not include Ce-Zr Comprising the four-component bismuth-molybdenum composite metal oxide catalyst of Example 1 and the same component but prepared by a method of manufacturing by one-step coprecipitation at the pre-reaction temperature conditions compared to the six-component bismuth-molybdenum composite metal oxide catalyst of Comparative Example 2 It was confirmed that exhibiting excellent catalytic activity.
- the six-component bismuth-molybdenum composite metal oxide catalyst of the embodiment according to the present invention is the four-component bismuth-molybdenum composite metal oxide catalyst of Comparative Example 1 and 6 of Comparative Example 2 in a reaction step at a reaction temperature of 320 °C
- the six-component bismuth-molybdenum composite metal oxide catalyst according to the embodiment of the present invention is the four-component bismuth-molybdenum composite metal oxide catalyst of Comparative Example 1 and the six-component bismuth- of Comparative Example 2 Compared to the molybdenum composite metal oxide catalyst, the conversion of 1-butene and the yield of 1,3-butadiene were markedly improved while showing low heavy oil selectivity.
- the catalyst is prepared by dividing the metal components constituting the catalyst into two stages without co-precipitation at once, thereby including components having oxygen storage and oxygen mobility without structural modification of the catalyst.
- the catalyst activity can be suppressed and the number of lattice oxygen can be controlled at the same time, and the catalyst can be controlled even when compared to the six-component bismuth-molybdenum composite metal oxide catalyst prepared by the same component or one-step coprecipitation (Comparative Example 2) It shows that there is an effect of improving activity.
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Abstract
Description
구분(반응온도: 320℃) | 실시예 | 비교예 1 | 비교예 2 |
1-부텐 전환율(%) | 95.85 | 95.17 | 94.42 |
1,3-부타디엔 수율(%) | 90.59 | 89.96 | 89.42 |
1,3-부타디엔 선택도 | 94.52 | 94.52 | 94.70 |
중질유 선택도 | 0.21 | 0.59 | 0.67 |
COx 선택도 | 1.63 | 0.96 | 1.01 |
구분(반응온도: 300℃) | 실시예 | 비교예 1 | 비교예 2 |
1-부텐 전환율(%) | 92.71 | 88.88 | 86.35 |
1,3-부타디엔 수율(%) | 88.04 | 84.18 | 81.72 |
1,3-부타디엔 선택도 | 94.96 | 94.72 | 94.64 |
중질유 선택도 | 0.27 | 0.50 | 0.73 |
COx 선택도 | 1.22 | 0.82 | 0.76 |
Claims (19)
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JP2016544305A JP6303248B2 (ja) | 2014-06-10 | 2015-06-04 | 多成分系複合金属酸化物触媒の製造方法 |
CN201580001890.0A CN105555399B (zh) | 2014-06-10 | 2015-06-04 | 制备多组分复合金属氧化物催化剂的方法 |
EP15805738.0A EP3023148B1 (en) | 2014-06-10 | 2015-06-04 | Method for manufacturing multi-component composite metal oxide catalyst |
US14/900,290 US10315969B2 (en) | 2014-06-10 | 2015-06-04 | Method of preparing multicomponent composite metal oxide catalyst |
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KR101960921B1 (ko) * | 2016-03-24 | 2019-03-22 | 주식회사 엘지화학 | 산화적 탈수소화 반응용 촉매 및 이의 제조방법 |
CN109310996A (zh) | 2016-05-30 | 2019-02-05 | 旭化成株式会社 | 金属氧化物催化剂及其制造方法以及其制造装置 |
KR102310897B1 (ko) * | 2017-11-28 | 2021-10-07 | 주식회사 엘지화학 | 부텐의 산화적 탈수소화 반응용 촉매 및 그 제조 방법 |
KR20190063203A (ko) | 2017-11-29 | 2019-06-07 | 롯데케미칼 주식회사 | 부타디엔 제조용 금속 복합 산화물 촉매, 이의 제조방법 및 이를 이용한 부타디엔의 제조방법 |
KR102223471B1 (ko) | 2017-12-26 | 2021-03-04 | 주식회사 엘지화학 | 아연 페라이트 촉매의 제조방법 및 이에 의해 제조된 아연 페라이트 촉매 |
CN109248714B (zh) * | 2018-10-12 | 2021-09-21 | 南京德普瑞克催化器有限公司 | 一种低反应温度、低劣化金属丝网催化器的制作工艺 |
KR20220028810A (ko) * | 2020-08-31 | 2022-03-08 | 주식회사 엘지화학 | 세리아-지르코니아 복합 산화물의 제조방법, 세리아-지르코니아 복합 산화물, 이를 포함하는 촉매 및 부타디엔의 제조방법 |
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