WO2014045967A1 - 1,3-ブタジエン分離材および該分離材を用いた分離方法 - Google Patents
1,3-ブタジエン分離材および該分離材を用いた分離方法 Download PDFInfo
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- WO2014045967A1 WO2014045967A1 PCT/JP2013/074537 JP2013074537W WO2014045967A1 WO 2014045967 A1 WO2014045967 A1 WO 2014045967A1 JP 2013074537 W JP2013074537 W JP 2013074537W WO 2014045967 A1 WO2014045967 A1 WO 2014045967A1
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- WIPO (PCT)
- Prior art keywords
- butadiene
- group
- carbon atoms
- separation
- separating
- Prior art date
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- 238000000926 separation method Methods 0.000 title claims abstract description 103
- 239000000463 material Substances 0.000 title claims abstract description 70
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 308
- 239000007789 gas Substances 0.000 claims abstract description 84
- 150000004696 coordination complex Chemical class 0.000 claims abstract description 75
- -1 dicarboxylic acid compound Chemical class 0.000 claims abstract description 44
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 28
- 239000010432 diamond Substances 0.000 claims abstract description 28
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 23
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 23
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 22
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 20
- 239000013110 organic ligand Substances 0.000 claims abstract description 18
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 17
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 16
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001273 butane Substances 0.000 claims abstract description 11
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 11
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 82
- 238000001179 sorption measurement Methods 0.000 claims description 67
- 238000000034 method Methods 0.000 claims description 36
- 239000012528 membrane Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 12
- 125000004423 acyloxy group Chemical group 0.000 claims description 10
- 125000003545 alkoxy group Chemical group 0.000 claims description 10
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 10
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 10
- 125000001424 substituent group Chemical group 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- 125000004442 acylamino group Chemical group 0.000 claims description 8
- 125000003342 alkenyl group Chemical group 0.000 claims description 8
- 125000003277 amino group Chemical group 0.000 claims description 8
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 claims description 8
- 125000005843 halogen group Chemical group 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002861 polymer material Substances 0.000 claims description 8
- MGFJDEHFNMWYBD-UHFFFAOYSA-N 4-(2-pyridin-4-ylethenyl)pyridine Chemical compound C=1C=NC=CC=1C=CC1=CC=NC=C1 MGFJDEHFNMWYBD-UHFFFAOYSA-N 0.000 claims description 7
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 7
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052790 beryllium Inorganic materials 0.000 claims description 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 3
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract description 41
- 229910001429 cobalt ion Inorganic materials 0.000 abstract description 2
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 15
- 238000003786 synthesis reaction Methods 0.000 description 15
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 13
- 238000003795 desorption Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 11
- 239000011148 porous material Substances 0.000 description 10
- 238000000634 powder X-ray diffraction Methods 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000002336 sorption--desorption measurement Methods 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 239000012046 mixed solvent Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- NBDAHKQJXVLAID-UHFFFAOYSA-N 5-nitroisophthalic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC([N+]([O-])=O)=C1 NBDAHKQJXVLAID-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- IAQRGUVFOMOMEM-ARJAWSKDSA-N cis-but-2-ene Chemical compound C\C=C/C IAQRGUVFOMOMEM-ARJAWSKDSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 4
- 125000001231 benzoyloxy group Chemical group C(C1=CC=CC=C1)(=O)O* 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 4
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 4
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 125000002510 isobutoxy group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])O* 0.000 description 4
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 4
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 4
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 4
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 125000006606 n-butoxy group Chemical group 0.000 description 4
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 4
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- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
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- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
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- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 2
- 150000001244 carboxylic acid anhydrides Chemical group 0.000 description 2
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
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- 238000004817 gas chromatography Methods 0.000 description 2
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- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
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- 229910002651 NO3 Inorganic materials 0.000 description 1
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WKQDQYHCCOHVSF-UHFFFAOYSA-O azanium iron nitrate hexahydrate Chemical compound [Fe].O.O.O.O.O.O.[N+](=O)([O-])[O-].[NH4+] WKQDQYHCCOHVSF-UHFFFAOYSA-O 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
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- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present invention relates to a 1,3-butadiene separation material containing a metal complex and a method for separating 1,3-butadiene from a mixed gas using the separation material.
- 1,3-butadiene is a useful compound, for example, as a starting material for the production of synthetic rubber and as an intermediate for a large number of compounds.
- 1,3-butadiene is generally produced by naphtha decomposition or butene dehydrogenation. In these production methods, 1,3-butadiene is obtained as one component of the mixed gas. Therefore, it is necessary to selectively separate and recover 1,3-butadiene from the product obtained as a mixture.
- the main component having 4 carbon atoms in the product include 1,3-butadiene, isobutene, 1-butene, 2-butene, normal butane, and isobutane. Since they have the same carbon number and close boiling points, they are difficult to separate by a distillation method adopted industrially.
- One of the other separation methods is an extractive distillation method.
- This method is an absorption method using a polar solvent, and therefore, when recovering 1,3-butadiene from a polar solvent, a very large number of separation methods are available. Use energy. Therefore, separation by an adsorption method is desired as a method for separating and recovering 1,3-butadiene with more energy saving.
- Patent Document 1 since the conventional porous material (Patent Document 1) has a low separation performance of 1,3-butadiene, it has to be separated in multiple stages, and an increase in the size of the separation apparatus is inevitable.
- Non-Patent Document 1 As an adsorbent that gives separation performance superior to that of conventional porous materials, porous metal complexes in which a dynamic structural change is caused by an external stimulus have been developed (Non-Patent Document 1 and Non-Patent Document 2).
- this porous material is used as a gas adsorbent, a unique phenomenon has been observed in which gas adsorption does not occur up to a certain pressure, but gas adsorption begins when a certain pressure is exceeded.
- a phenomenon has been observed in which the adsorption start pressure varies depending on the type of gas.
- this porous material When this porous material is applied to an adsorbent in, for example, a pressure swing adsorption type gas separation device, very efficient gas separation is possible.
- the pressure swing width can be narrowed, contributing to energy saving.
- it since it can contribute to miniaturization of the gas separation device, it is possible to increase cost competitiveness when selling high-purity gas as a product, of course, even when high-purity gas is used inside its own factory Since the cost required for the equipment that requires high purity gas can be reduced, the manufacturing cost of the final product can be reduced.
- the present inventors have intensively studied and found that the above object can be achieved by using a metal complex having a structure in which a pseudo-diamond skeleton is interpenetrated multiple times as a separating material, and have reached the present invention. That is, the present invention includes the following embodiments [1] to [13].
- a 1,3-butadiene separator that selectively adsorbs 1,3-butadiene from a mixed gas containing 1,3-butadiene and a hydrocarbon having 4 carbon atoms other than 1,3-butadiene,
- Pseudo diamond skeleton consisting child comprises a metal complex having a interpenetrating structure multiplexing 1,3-butadiene separation material.
- R 1 , R 3 and R 4 are hydrogen atoms, and R 2 is a hydrogen atom, a methyl group or a nitro group
- R 1 , R 3 and R 4 are hydrogen atoms
- R 2 is a hydrogen atom, a methyl group or a nitro group
- [5] The 1,3-butadiene separating material according to any one of [1] to [4], wherein the metal complex has a structure in which a pseudo diamond skeleton is triple interpenetrated.
- a 1,3-butadiene separation membrane comprising a porous support and the 1,3-butadiene separation material according to any one of [1] to [6] attached to a surface layer portion of the porous support .
- a 1,3-butadiene separation membrane comprising a polymer material and the 1,3-butadiene separation material according to any one of [1] to [6] kneaded and dispersed in the polymer material.
- a mixed gas containing 1,3-butadiene and a hydrocarbon having 4 carbon atoms other than 1,3-butadiene is brought into contact with the separation membrane, and 1,3-butadiene is selectively permeated through the separation membrane.
- 1,3-butadiene can be separated and recovered from a mixed gas containing 1,3-butadiene with higher separation performance than before.
- FIG. 1 It is a schematic diagram which shows the structure of a pseudo diamond skeleton. It is a schematic diagram of a three-dimensional structure in which a pseudo diamond skeleton is triple interpenetrated. It is a schematic diagram of an apparatus for recovering 1,3-butadiene from a mixed gas by a pressure swing adsorption method. It is a comparison figure of the powder X-ray-diffraction pattern of the metal complex 1 of the synthesis example 1, and the powder X-ray-diffraction pattern estimated from the single crystal structure assumed that the pseudo-diamond frame
- FIG. 2 is an adsorption / desorption isotherm of 1,3-butadiene, trans-2-butene, cis-2-butene, 1-butene and normal butane at 25 ° C. of the separating material of Example 1.
- FIG. 2 is an adsorption and desorption isotherm of 1,3-butadiene, trans-2-butene, cis-2-butene, 1-butene and normal butane at 25 ° C. of the separation material of Comparative Example 1.
- FIG. 2 is an adsorption / desorption isotherm of 1,3-butadiene, 1-butene and normal butane at 25 ° C. of the separating material of Comparative Example 2.
- FIG. 1 is an adsorption / desorption isotherm of 1,3-butadiene, trans-2-butene, cis-2-butene, 1-butene and normal butane at 25 ° C. of the separating material of Comparative Example 2.
- FIG. 2 is an adsorption / desorption isotherm of 1,3-butadiene and 1-butene at 25 ° C. for the separation material of Example 3.
- FIG. FIG. 4 is an adsorption / desorption isotherm of 1,3-butadiene and 1-butene at 25 ° C. for the separation material of Example 4.
- FIG. 6 is an adsorption / desorption isotherm of 1,3-butadiene and 1-butene at 25 ° C. for the separation material of Example 5.
- the 1,3-butadiene separation material of the present invention includes a metal complex comprising a dicarboxylic acid compound (I), a specific metal ion, and an organic ligand (II) capable of bidentate coordination with the metal ion. .
- the dicarboxylic acid compound (I) used in the present invention has the following general formula (I): (Wherein R 1 , R 2 , R 3 and R 4 may be the same or different, each may be a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, or 2 to 2 carbon atoms) 4 alkenyl groups, alkoxy groups having 1 to 4 carbon atoms, formyl groups, acyloxy groups having 2 to 10 carbon atoms, alkoxycarbonyl groups having 2 to 4 carbon atoms, nitro groups, cyano groups, amino groups, 1 to 4 carbon atoms Or a dialkylamino group having 2 to 4 carbon atoms, an acylamino group having 2 to 4 carbon atoms, or a halogen atom.
- R 1 , R 2 , R 3 and R 4 may be the same or different, each may be a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, or 2 to 2
- alkyl group having 1 to 4 carbon atoms examples include linear or branched alkyl groups such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, and tert-butyl group. It is done.
- alkyl group may have include an alkoxy group (methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, tert-butoxy group, etc.), Amino group, monoalkylamino group (such as methylamino group), dialkylamino group (such as dimethylamino group), formyl group, epoxy group, acyloxy group (acetoxy group, n-propanoyloxy group, n-butanoyloxy group, Pivaloyloxy group, benzoyloxy group, etc.), alkoxycarbonyl group (methoxycarbonyl group, ethoxycarbonyl group, n-butoxycarbonyl group, etc.), carboxylic acid anhydride group (—CO—O—CO—R group) (R is carbon number) 1 to 4 alkyl groups).
- the alkyl group has a substituent, the number of substituents is
- alkenyl group having 2 to 4 carbon atoms examples include a vinyl group, an allyl group, a 1-propenyl group, and a butenyl group.
- alkoxy group having 1 to 4 carbon atoms examples include methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group and tert-butoxy group.
- acyloxy group having 2 to 10 carbon atoms examples include an acetoxy group, an n-propanoyloxy group, an n-butanoyloxy group, a pivaloyloxy group, and a benzoyloxy group.
- alkoxycarbonyl group having 2 to 4 carbon atoms examples include a methoxycarbonyl group, an ethoxycarbonyl group, and an n-butoxycarbonyl group.
- An example of a monoalkylamino group having 1 to 4 carbon atoms is a methylamino group.
- Examples of the dialkylamino group having 2 to 4 carbon atoms include a dimethylamino group.
- Examples of the acylamino group having 2 to 4 carbon atoms include an acetylamino group.
- Halogen atoms include fluorine, chlorine, bromine and iodine.
- R 1 , R 3 and R 4 are preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, more preferably a hydrogen atom.
- R 2 is preferably a hydrogen atom, a methyl group or a nitro group.
- R 1 , R 3 and R 4 are hydrogen atoms, and R 2 is a hydrogen atom, a methyl group or a nitro group, isophthalic acid, 5-methylisophthalic acid or 5- Nitroisophthalic acid is preferred, and 5-nitroisophthalic acid is more preferred.
- Metal ions constituting the metal complex used in the separation material of the present invention are beryllium, magnesium, calcium, strontium, barium, titanium, vanadium, chromium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, copper, And at least one metal ion selected from the group consisting of zinc and cadmium.
- zinc ion and cobalt ion are preferable in terms of gas adsorption performance, and zinc ion is more preferable.
- the metal salt can be used.
- the metal salt is preferably a single metal salt, but two or more metal salts may be mixed and used.
- organic acid salts such as acetate and formate
- inorganic acid salts such as hydrochloride, hydrobromide, sulfate, nitrate and carbonate can be used.
- an organic ligand capable of bidentate coordination means a ligand having two sites that are coordinated to a metal by an unshared electron pair.
- —CH 2 —CH 2 —, —CH ⁇ CH—, and —NHCO— are preferable, and —CH ⁇ CH— is more preferable because a pseudo-diamond skeleton is easily formed.
- —CH ⁇ CH— is preferably a trans structure.
- alkyl group having 1 to 4 carbon atoms examples include linear or branched alkyl groups such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, and tert-butyl group. Can be mentioned.
- alkyl group may have include an alkoxy group (methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, tert-butoxy group, etc.), Amino group, monoalkylamino group (such as methylamino group), dialkylamino group (such as dimethylamino group), formyl group, epoxy group, acyloxy group (acetoxy group, n-propanoyloxy group, n-butanoyloxy group, Pivaloyloxy group, benzoyloxy group, etc.), alkoxycarbonyl group (methoxycarbonyl group, ethoxycarbonyl group, n-butoxycarbonyl group, etc.), carboxylic acid anhydride group (—CO—O—CO—R group) (R is carbon number) 1 to 4 alkyl groups).
- the alkyl group has a substituent, the number of substituents is
- alkenyl group having 2 to 4 carbon atoms examples include a vinyl group, an allyl group, a 1-propenyl group, and a butenyl group.
- alkoxy group having 1 to 4 carbon atoms examples include methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group and tert-butoxy group.
- acyloxy group having 2 to 10 carbon atoms examples include an acetoxy group, an n-propanoyloxy group, an n-butanoyloxy group, a pivaloyloxy group, and a benzoyloxy group.
- alkoxycarbonyl group having 2 to 4 carbon atoms examples include a methoxycarbonyl group, an ethoxycarbonyl group, and an n-butoxycarbonyl group.
- An example of a monoalkylamino group having 1 to 4 carbon atoms is a methylamino group.
- Examples of the dialkylamino group having 2 to 4 carbon atoms include a dimethylamino group.
- Examples of the acylamino group having 2 to 4 carbon atoms include an acetylamino group.
- Halogen atoms include fluorine, chlorine, bromine and iodine.
- R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms having no substituent in terms of gas adsorption.
- R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are all preferably hydrogen atoms.
- organic ligand (II) capable of bidentate coordination all of R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are hydrogen atoms, and X is —CH 1,2-di (4-pyridyl) ethene where ⁇ CH— is preferred.
- the metal complex having a structure in which the pseudo-diamond skeleton used in the separating material of the present invention has multiple interpenetrations is the dicarboxylic acid compound (I) and beryllium, magnesium, calcium, strontium, barium, titanium, vanadium, chromium, manganese, At least one metal salt selected from the group consisting of iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, copper, zinc and cadmium, and an organic ligand capable of bidentate coordination with the metal ion (II) can be reacted in a solvent under normal pressure for several hours to several days to produce crystals.
- an aqueous solution of the metal salt or an organic solvent solution containing water and an organic solvent solution containing a dicarboxylic acid compound (I) and an organic ligand (II) capable of bidentate coordination are mixed under normal pressure.
- the metal complex of the present invention can be obtained by reaction.
- the molar concentration of the dicarboxylic acid compound (I) in the solution for producing the metal complex is preferably 0.005 to 5.0 mol / L, and more preferably 0.01 to 2.0 mol / L. Even if the reaction is performed at a concentration lower than this, the desired metal complex can be obtained, but this is not preferable because the yield decreases. Further, at a concentration higher than this, the solubility is lowered and the reaction may not proceed smoothly.
- the molar concentration of the metal salt in the solution for producing the metal complex is preferably 0.005 to 5.0 mol / L, and more preferably 0.01 to 2.0 mol / L. Even if the reaction is performed at a concentration lower than this, the desired metal complex can be obtained, but this is not preferable because the yield decreases. Further, at a concentration higher than this, unreacted metal salt remains, and purification of the obtained metal complex may be difficult.
- the molar concentration of the bidentate organic ligand (II) in the solution for producing the metal complex is preferably 0.001 to 5.0 mol / L, more preferably 0.005 to 2.0 mol / L. preferable. Even if the reaction is performed at a concentration lower than this, the desired metal complex can be obtained, but this is not preferable because the yield decreases. Further, at a concentration higher than this, the solubility is lowered and the reaction may not proceed smoothly.
- a solvent used for producing the metal complex an organic solvent, water, or a mixed solvent thereof can be used. Specifically, methanol, ethanol, propanol, diethyl ether, dimethoxyethane, tetrahydrofuran, hexane, cyclohexane, heptane, benzene, toluene, methylene chloride, chloroform, acetone, ethyl acetate, acetonitrile, N, N-dimethylformamide, dimethyl sulfoxide Water or a mixed solvent thereof can be used.
- the mixed solvent a mixed solvent of 1 to 80% by mass of water and an organic solvent is preferable.
- the organic solvent used for the mixed solvent with water is preferably an aprotic polar solvent such as tetrahydrofuran, acetone, acetonitrile, N, N-dimethylformamide, N, N-diethylformamide, or dimethyl sulfoxide.
- an aprotic polar solvent such as tetrahydrofuran, acetone, acetonitrile, N, N-dimethylformamide, N, N-diethylformamide, or dimethyl sulfoxide.
- N, N— A mixed solvent of dimethylformamide and water is preferred.
- An acid or base may be added to the solvent to adjust to a pH suitable for complex formation.
- the concentration of water in the mixed solvent is preferably 1 to 80% by mass, more preferably 3 to 60% by mass, and most preferably 5 to 55% by mass from the viewpoint of the particle size of the metal complex to be formed.
- the reaction temperature is preferably ⁇ 20 to 150 ° C., more preferably 50 to 130 ° C.
- the reaction time is preferably 1 to 24 hours, more preferably 2 to 10 hours.
- the completion of the reaction can be confirmed by quantifying the remaining amount of the raw material by gas chromatography or high performance liquid chromatography.
- the resulting mixed solution is subjected to suction filtration to collect a precipitate, washed with an organic solvent, and then vacuum-dried at, for example, 60 to 100 ° C. for several hours to obtain the metal complex used in the separation material of the present invention Can be obtained.
- a metal complex having high crystallinity has high purity and excellent adsorption performance.
- an appropriate pH may be adjusted using an acid or a base.
- the metal complex obtained as described above is formed by coordination between two carboxylate ions of dicarboxylic acid compound (I) and two bidentate organic ligands (II) per metal ion.
- the quasi-diamond skeleton has a three-dimensional structure with multiple interpenetrations.
- FIG. 1 shows the structure of the pseudo diamond skeleton
- FIG. 2 shows a schematic diagram of a three-dimensional structure in which the pseudo diamond skeleton interpenetrates three times.
- the metal complex preferably has a structure in which a pseudo diamond skeleton is triple interpenetrated.
- the “pseudo-diamond skeleton” means that a carboxylate ion of two dicarboxylic acid compounds (I) and two bidentate organic ligands (II) are coordinated per metal ion. It is defined as a three-dimensional structure similar to the diamond structure formed.
- a structure in which a pseudo-diamond skeleton is interpenetrated multiple times is defined as a three-dimensional integrated structure in which a plurality of pseudo-diamond skeletons penetrate each other so as to fill the pores.
- the fact that the metal complex has “a structure in which pseudo diamond skeletons are interpenetrated multiple times” can be confirmed by, for example, crystal X-ray structure analysis, powder X-ray structure analysis, or the like.
- the three-dimensional structure of the metal complex used in the separation material of the present invention can be changed even after synthesis.
- the structure and size of the pores also change.
- This change in structure is presumed to depend on the type of substance to be adsorbed, the adsorption pressure, the adsorption temperature, and the like.
- the strength of the interaction is proportional to the magnitude of the Lennard-Jones potential of the substance
- the degree of structural change varies depending on the adsorbed substance.
- the metal complex used in the separation material of the present invention is considered to exhibit high selectivity.
- the interaction between gas molecules adsorbed on the pore surface and the interaction between the interpenetrating pseudo-diamond skeletons are obtained.
- high gas separation performance can be expressed. After the adsorbed substance is desorbed, it returns to the original structure, so it is considered that the pore structure also returns.
- 1,3-butadiene as a separation target is contained.
- the mixed gas is brought into contact with the separation material of the present invention, 1,3-butadiene is selectively adsorbed on the separation material, and then 1,3-butadiene adsorbed on the separation material is desorbed from the separation material.
- the 1,3-butadiene coming off is collected.
- the separating material is regenerated by desorption of 1,3-butadiene.
- the hydrocarbon gas having 4 carbon atoms other than 1,3-butadiene contained in the mixed gas is not particularly limited.
- the separation material of the present invention is particularly effective in separating 1,3-butadiene from a mixed gas containing other hydrocarbons having 4 carbon atoms such as butene such as 2-butene, butane such as normal butane and isobutane. It is.
- the separation method includes an adsorption step in which the mixed gas and the separation material of the present invention are brought into contact under conditions where 1,3-butadiene can be adsorbed on the separation material.
- the adsorption pressure and adsorption temperature which are conditions under which 1,3-butadiene can be adsorbed on the separation material, can be appropriately set according to the design of the apparatus, the purity required for the product gas, and the like.
- the 1,3-butadiene partial pressure in the mixed gas introduced in the adsorption step is preferably 70 to 250 kPa, more preferably 90 to 200 kPa.
- the adsorption temperature is preferably ⁇ 5 to 100 ° C., more preferably 0 to 50 ° C.
- the separation method can be a pressure swing adsorption method or a temperature swing adsorption method.
- the separation method is a pressure swing adsorption method
- a mixed gas containing 1,3-butadiene is brought into contact with the separation material, and only the target 1,3-butadiene is selectively adsorbed on the separation material (adsorption process).
- a step (regeneration step) of reducing the pressure to a pressure at which 1,3-butadiene adsorbed from the adsorption pressure can be desorbed from the separation material is included.
- the desorption pressure can be appropriately set according to the design of the apparatus, the production efficiency, and the like.
- the desorption pressure is preferably 0.05 to 50 kPa, more preferably 0.05 to 30 kPa.
- the pressure swing adsorption method will be specifically described with reference to FIG.
- the separation towers of the present invention are packed in the adsorption towers AC1 and AC2.
- a mixed gas (M) containing 1,3-butadiene, butene, butane and the like is pressurized from the mixed gas storage tank MS to about 0.3 MPa by a compressor and passes through a valve V1 (hereinafter abbreviated as “V1”, the same applies hereinafter). It is supplied to the adsorption tower AC1 filled with the separation material.
- V1 valve
- FIG. 5 when the 1,3-butadiene partial pressure exceeds 70 kPa, 1,3-butadiene is selectively adsorbed on the separation material in the adsorption tower AC1 (adsorption step).
- the gas (B) in which butane and butenes are concentrated passes through V7 and is sent to the product storage tank PS2.
- the adsorption tower AC1 is sucked by the vacuum pump P1 with V1, V5, V6 and V7 closed and V2 open.
- the gas (BD) mainly composed of 1,3-butadiene adsorbed on the separation material of the adsorption tower AC1 is desorbed and sent to the product storage tank PS1 (desorption process). .
- the adsorption step is completed for the adsorption tower AC2.
- the adsorption is performed using the pressure difference between the adsorption tower AC1 and the adsorption tower AC2 by closing V1, V2, V3, V4, V7 and V8, and opening V5 and V6.
- the residual mixed gas in the column AC2 is recovered to the adsorption column AC1 (pressure equalizing step). By performing the pressure equalization step, each product gas can be obtained efficiently without reducing the purity.
- the adsorption tower AC2 is sucked by the vacuum pump P1 with V2, V3, V5, V6 and V8 closed and V4 opened, and the gas mainly composed of 1,3-butadiene adsorbed at this time. (BD) is desorbed and sent to the product storage tank PS1.
- the adsorption column AC1 is supplied with a mixed gas (M) containing 1,3-butadiene while V2, V3, V5, V6 and V8 are closed and V1 and V7 are open, and the adsorption step is performed again. .
- M mixed gas
- the adsorption and desorption operations are alternately repeated in a cycle appropriately set by a timer or the like, and each product gas is continuously produced.
- the separation method is a temperature swing adsorption method
- a mixed gas containing 1,3-butadiene is brought into contact with the separation material, and only the target 1,3-butadiene is selectively adsorbed on the separation material (adsorption process).
- the method includes a step (regeneration step) of raising the temperature from the adsorption temperature to a temperature at which 1,3-butadiene adsorbed can be desorbed from the separation material.
- the desorption temperature can be appropriately set according to the design of the apparatus, production efficiency, and the like.
- the desorption temperature is preferably 0 to 200 ° C, more preferably 20 to 150 ° C.
- the separation method is a pressure swing adsorption method or a temperature swing adsorption method
- the step of bringing the mixed gas into contact with the separation material adsorption step
- the changing step can be repeated as appropriate.
- Membrane separation is also exemplified as a separation method other than the above.
- the separation membrane can be obtained by attaching the metal complex to the surface layer portion of the porous support by, for example, crystal growth.
- a material for the porous support for example, silica, such as alumina, silica, mullite, cordierite or the like, a composition comprising alumina and other components, a porous sintered metal, porous glass, and the like can be suitably used.
- oxides such as zirconia and magnesia
- ceramics such as carbide or nitride such as silicon carbide and silicon nitride, gypsum, cement, or a mixture thereof can be used.
- the porosity of the porous support is usually about 30 to 80%, preferably 35 to 70%, and most preferably 40 to 60%. When the porosity is too small, the permeability of a fluid such as gas is lowered, which is not preferable. When the porosity is too large, the strength of the support is decreased, which is not preferable.
- the pore diameter of the porous support is usually 10 to 10,000 nm, preferably 100 to 10,000 nm.
- a separation membrane obtained by crystal growth of the metal complex on the surface layer of the porous support is obtained by impregnating the porous support in a solution containing the metal complex raw material and heating as necessary.
- the separation membrane can also be obtained by kneading the metal complex of the present invention with a polymer material, dispersing it in the polymer material, and molding it into a film.
- the polymer material include polymer materials for gas separation membranes such as polyvinyl acetate, polyimide, and polydimethylsiloxane.
- the permeability P of each gas in the mixed gas is the solubility S of each gas in the membrane and the diffusion coefficient D in the membrane. It is represented by the product of Since a gas having a higher transmittance P selectively permeates the membrane, such a gas can be separated and recovered from the mixed gas. Therefore, by forming a film of the metal complex of the present invention, which has a high selectivity for 1,3-butadiene, it is possible to obtain a film that allows permeation of 1,3-butadiene.
- 1,3-butadiene when a mixed gas is vented to a double pipe inner pipe having a gas impermeable outer pipe and an inner pipe made of a separation membrane, 1,3-butadiene selectively permeates the inner pipe, Since it is concentrated between the inner tube and the inner tube, the target 1,3-butadiene can be separated by collecting this gas.
- the ratio of 1,3-butadiene in the mixed gas to be separated can take various values, but this ratio greatly depends on the supply source of the mixed gas.
- the mixed gas contains at least hydrocarbons such as butene such as isobutene, 1-butene and 2-butene, butane such as normal butane and isobutane, and may further include other hydrocarbons.
- the mixed gas is preferably 10 to 99% by volume of 1,3-butadiene with respect to the total volume ratio of 1,3-butadiene and other hydrocarbons (which may be plural types) in the mixed gas. Including. More preferably, the proportion of 1,3-butadiene is 20 to 60% by volume.
- the separation material of the present invention can be applied to separation of a C4 fraction (C4 fraction) obtained by naphtha decomposition.
- a mixed gas containing about 40% by volume of 1,3-butadiene is pressurized to 175 kPa or more and then circulated through the adsorption tower packed with the separation material of the present invention for 1 to 10 minutes. Thereafter, after a pressure equalization step, the pressure is reduced to 20 kPa or less with a vacuum pump, and 1,3-butadiene adsorbed on the separation material can be recovered.
- FIG. 4 shows a comparison between the powder X-ray diffraction pattern predicted from the single crystal structure assumed to have a multiple interpenetrating structure of the pseudo diamond skeleton and the powder X-ray diffraction pattern of the metal complex 1 obtained.
- FIG. 4 shows that the obtained solid is a metal complex having a structure in which the pseudo diamond skeleton described in Non-Patent Document 3 is triple interpenetrated.
- ⁇ Comparative Example 1> As typical adsorbents, NaY-type zeolite (HS-320, manufactured by Wako Pure Chemical Industries, Ltd.), 1,3-butadiene, trans-2-butene, cis-2-butene, 1-butene at 25 ° C. and The adsorption / desorption isotherm of normal butane was measured. The results are shown in FIG. ⁇ Comparative Example 2> As typical adsorbents, NaY-type zeolite (HS-320, manufactured by Wako Pure Chemical Industries, Ltd.), 1,3-butadiene, trans-2-butene, cis-2-butene, 1-butene at 25 ° C. and The adsorption / desorption isotherm of normal butane was measured. The results are shown in FIG.
- FIG. 5 indicates that the metal complex 1 of Synthesis Example 1 selectively adsorbs 1,3-butadiene in the pressure range of 70 to 110 kPa. Therefore, when a mixed gas composed of 1,3-butadiene, 1-butene and normal butane is supplied at a partial pressure of 1,3-butadiene of 70 kPa or more and brought into contact with the metal complex, only 1,3-butadiene is adsorbed and concentrated. Is done. Next, when the supply of the mixed gas is stopped and the pressure is lowered to 20 kPa or less, 1,3-butadiene is desorbed, so that a gas enriched with 1,3-butadiene can be obtained. On the other hand, in FIGS.
- the selective adsorptivity of 1,3-butadiene is low in the pressure range of 0 to 110 kPa. That is, 1-butene and normal butane are also adsorbed in addition to 1,3-butadiene, and only 1,3-butadiene cannot be sufficiently concentrated.
- Example 2 An adsorption tube (inner diameter 1.0 cm ⁇ length 20 cm) was filled with metal complex 1 (5.3 g) of Synthesis Example 1. Thereafter, in order to activate the metal complex, the filling was heated at 150 ° C. and evacuated before the test. After cooling to room temperature, a pure He gas is used to create a pressure of 0.15 MPaG, and under this condition, a mixed gas of 1,3-butadiene (67% by volume) and 1-butene (33% by volume) is subsequently obtained. Was allowed to flow into the adsorption tube. The flow rate and composition of the gas flow at the adsorption tube outlet were monitored by a flow meter and gas chromatography.
- the target metal complex (metal complex 2) was obtained as a pink solid in 1.81 g (yield: 79%).
- the obtained metal complex 2 was confirmed by powder X-ray diffraction pattern measurement to be a metal complex having a structure in which the pseudo-diamond skeleton shown in FIGS. 1 and 2 was triple interpenetrated.
- the contents were filtered using a Kiriyama funnel (trademark), and the deposited metal complex was washed with ion-exchanged water and ethanol in this order, and then dried. 1.98 g (yield: 84%) of the target metal complex (metal complex 3) was obtained as a brown solid.
- the obtained metal complex 3 was confirmed by powder X-ray diffraction pattern measurement to be a metal complex having a structure in which the pseudo diamond skeleton shown in FIGS.
- the contents were filtered using a Kiriyama funnel (trademark), and the deposited metal complex was washed with ion-exchanged water and ethanol in this order, and then dried. 1.92 g (yield: 81%) of the target metal complex (metal complex 4) was obtained as a blue solid.
- the obtained metal complex 4 was confirmed by powder X-ray diffraction pattern measurement to be a metal complex having a structure in which the pseudo-diamond skeleton shown in FIGS. 1 and 2 was triple interpenetrated.
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Abstract
Description
ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム、チタン、バナジウム、クロム、マンガン、鉄、ルテニウム、コバルト、ロジウム、ニッケル、パラジウム、白金、銅、亜鉛およびカドミウムからなる群より選択される少なくとも1種の金属のイオンと、
下記一般式(II):
[2]前記金属のイオンが亜鉛イオンである[1]に記載の1,3-ブタジエン分離材。
[3]一般式(II)で示される有機配位子(II)が、R5、R6、R7、R8、R9、R10、R11およびR12のすべてが水素原子でありXが-CH=CH-である1,2-ジ(4-ピリジル)エテンである[1]または[2]のいずれかに記載の1,3-ブタジエン分離材。
[4]一般式(I)で示されるジカルボン酸化合物(I)が、R1、R3およびR4が水素原子であり、R2が水素原子、メチル基またはニトロ基のいずれかである[1]~[3]のいずれかに記載の1,3-ブタジエン分離材。
[5]前記金属錯体が、擬ダイヤモンド骨格が三重に相互貫入した構造を有する[1]~[4]のいずれかに記載の1,3-ブタジエン分離材。
[6]前記1,3-ブタジエン以外の炭素数4の炭化水素がブテンおよびブタンである[1]~[5]のいずれかに記載の1,3-ブタジエン分離材。
[7]1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガスを分離材と接触させ、1,3-ブタジエンを前記分離材に選択的に吸着させる吸着工程と、その後、前記分離材に吸着された1,3-ブタジエンを前記分離材から脱着させて、脱離してくる1,3-ブタジエンを捕集する再生工程とを含む、混合ガスから1,3-ブタジエンを分離する方法において、前記分離材が[1]~[6]のいずれかに記載の1,3-ブタジエン分離材であることを特徴とする1,3-ブタジエンの分離方法。
[8]前記1,3-ブタジエン以外の炭素数4の炭化水素がブテンおよびブタンである[7]に記載の1,3-ブタジエンの分離方法。
[9]前記分離方法が圧力スイング吸着法である[7]または[8]のいずれかに記載の1,3-ブタジエンの分離方法。
[10]前記分離方法が温度スイング吸着法である[7]または[8]のいずれかに記載の1,3-ブタジエンの分離方法。
[11]多孔質支持体と、前記多孔質支持体の表層部に付着した[1]~[6]のいずれかに記載の1,3-ブタジエン分離材とを含む1,3-ブタジエン分離膜。
[12]高分子材料と、前記高分子材料に混練分散された[1]~[6]のいずれかに記載の1,3-ブタジエン分離材とを含む1,3-ブタジエン分離膜。
[13]1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガスを分離膜に接触させ、前記分離膜を通して1,3-ブタジエンを選択的に透過させることを含む、前記混合ガスよりも1,3-ブタジエン濃度が高いガスを得る1,3-ブタジエンの分離方法において、前記分離膜が[11]または[12]のいずれかに記載の1,3-ブタジエン分離膜であることを特徴とする1,3-ブタジエンの分離方法。
本発明の1,3-ブタジエン分離材は、ジカルボン酸化合物(I)と、特定の金属イオンと、該金属イオンに二座配位可能な有機配位子(II)とからなる金属錯体を含む。
本発明に用いられるジカルボン酸化合物(I)は下記一般式(I):
本発明の分離材に用いられる金属錯体を構成する金属イオンはベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム、チタン、バナジウム、クロム、マンガン、鉄、ルテニウム、コバルト、ロジウム、ニッケル、パラジウム、白金、銅、亜鉛およびカドミウムからなる群より選択される少なくとも1種の金属のイオンである。これらの中でもガス吸着性能の面から亜鉛イオンおよびコバルトイオンが好ましく、亜鉛イオンがより好ましい。
本発明に用いられる金属イオンに二座配位可能な有機配位子(II)は下記一般式(II):
本発明の分離材に用いられる擬ダイヤモンド骨格が多重に相互貫入した構造を有する金属錯体は、ジカルボン酸化合物(I)と、ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム、チタン、バナジウム、クロム、マンガン、鉄、ルテニウム、コバルト、ロジウム、ニッケル、パラジウム、白金、銅、亜鉛およびカドミウムからなる群より選択される少なくとも1種の金属の塩と、該金属のイオンに二座配位可能な有機配位子(II)とを、常圧下、溶媒中で数時間から数日間反応させ、結晶を析出させて製造することができる。例えば、前記金属塩の水溶液または水を含む有機溶媒溶液と、ジカルボン酸化合物(I)および二座配位可能な有機配位子(II)を含有する有機溶媒溶液とを、常圧下で混合して反応させることにより本発明の金属錯体を得ることができる。
金属錯体の製造に用いる溶媒としては、有機溶媒、水またはそれらの混合溶媒を使用することができる。具体的には、メタノール、エタノール、プロパノール、ジエチルエーテル、ジメトキシエタン、テトラヒドロフラン、ヘキサン、シクロヘキサン、ヘプタン、ベンゼン、トルエン、塩化メチレン、クロロホルム、アセトン、酢酸エチル、アセトニトリル、N,N-ジメチルホルムアミド、ジメチルスルホキシド、水またはこれらの混合溶媒を使用することができる。混合溶媒としては水1~80質量%と有機溶媒との混合溶媒が好ましい。水との混合溶媒に用いる有機溶媒としてはテトラヒドロフラン、アセトン、アセトニトリル、N,N-ジメチルホルムアミド、N,N-ジエチルホルムアミド、ジメチルスルホキシドなどの非プロトン性極性溶媒が好ましく、なかでも、N,N-ジメチルホルムアミドと水の混合溶媒が好ましい。溶媒に酸または塩基を追加して錯体形成に好適なpHに調節してもよい。
以上のようにして得られる金属錯体は、金属イオン1つあたり2つのジカルボン酸化合物(I)のカルボキシラートイオンと2つの二座配位可能な有機配位子(II)が配位して形成される擬ダイヤモンド骨格が多重に相互貫入した三次元構造を有する。擬ダイヤモンド骨格の構造を図1に、擬ダイヤモンド骨格が三重に相互貫入した三次元構造の模式図を図2に示す。金属錯体は、擬ダイヤモンド骨格が三重に相互貫入した構造を有することが好ましい。
本発明の1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガスから、1,3-ブタジエンを分離する方法では、分離対象である1,3-ブタジエンを含む混合ガスを本発明の分離材と接触させ、1,3-ブタジエンを前記分離材に選択的に吸着させ、その後、前記分離材に吸着された1,3-ブタジエンを前記分離材から脱着させて、脱離してくる1,3-ブタジエンを捕集する。1,3-ブタジエンの脱着により分離材は再生する。
高圧ガス吸着装置を用いて容量法で測定を行った。このとき、測定に先立って試料を150℃、50Paで6時間乾燥し、吸着水などを除去した。分析条件の詳細を以下に示す。
<分析条件>
装置:日本ベル株式会社製BELSORP-18HT
平衡待ち時間:500秒
株式会社リガク製のX線回折装置:マルチフレックスを用いて、回折角(2θ)=3~50°の範囲を走査速度3°/分で走査し、対称反射法で測定した。単結晶構造からのXRPD回折パターンへの変換には、The Cambridge Crystallographic Data Centre製Mercury(ver2.3)を用いた。
[Zn(NO2ip)(bpe)]の合成(金属錯体1)
500mLナスフラスコに硝酸亜鉛六水和物14.4g(48.4mmol)、5-ニトロイソフタル酸10.5g(49.7mmol)、1,2-ジ(4-ピリジル)エテン9.11g(50.0mmol)、DMF180mL、および水20mLを加えた。得られた溶液を120℃で6時間加熱攪拌した。室温まで冷却した後、析出した固体を吸引濾過し、DMFおよびメタノールで洗浄し、80℃で真空乾燥した。目的の金属錯体(金属錯体1)23.3g(収率:97%)を得た。擬ダイヤモンド骨格が多重に相互貫入した構造をとると仮定した単結晶構造から予測される粉末X線回折パターンと、得られた金属錯体1の粉末X線回折パターンとの比較を図4に示す。図4より、得られた固体が非特許文献3に記載されている擬ダイヤモンド骨格が三重に相互貫入した構造を有する金属錯体であることがわかる。
合成例1で得た金属錯体1について、25℃における1,3-ブタジエン、trans-2-ブテン、cis-2-ブテン、1-ブテンおよびノルマルブタンの吸脱着等温線を測定した。結果を図5に示す。
代表的な吸着材として、NaY型ゼオライト(HS-320、和光純薬工業株式会社製)について、25℃における1,3-ブタジエン、trans-2-ブテン、cis-2-ブテン、1-ブテンおよびノルマルブタンの吸脱着等温線を測定した。結果を図6に示す。
<比較例2>
代表的な吸着材として、NaY型ゼオライト(HS-320、和光純薬工業株式会社製)について、25℃における1,3-ブタジエン、trans-2-ブテン、cis-2-ブテン、1-ブテンおよびノルマルブタンの吸脱着等温線を測定した。結果を図6に示す。
代表的な金属錯体の吸着材として、Basosiv(商標)M050(シグマアルドリッチジャパン合同会社製)について、25℃における1,3-ブタジエン、1-ブテンおよびノルマルブタンの吸脱着等温線を測定した。結果を図7に示す。
吸着管(内径1.0cm×長さ20cm)に、合成例1の金属錯体1(5.3g)を充填した。その後、金属錯体の活性化のため、試験前に充填物を150℃で加熱し、真空引きを行った。室温まで冷却した後、純粋なHeガスを用いて0.15MPaGの圧力を作り出し、この条件下、引き続いて1,3-ブタジエン(67体積%)と1-ブテン(33体積%)との混合ガスを吸着管に流入させた。吸着管出口のガス流の流量および組成を、流量計およびガスクロマトグラフィーによりモニタリングした。物質収支に基づいて金属錯体への各ガスの吸着量を計算したところ、金属錯体1グラムあたり1,3-ブタジエンを46mL、1-ブテンを4mL吸着していることがわかった。このことから、合成例1の金属錯体1を分離、吸着材として用いることにより、1,3-ブタジエンを含むC4混合ガスの1,3-ブタジエン濃度を5倍に濃縮できることがわかる。
[ZnCo(NO2ip)(bpe)]の合成(金属錯体2)
ジルコニア製容器(45mL)に、酸化亜鉛(0.37g,4.5mmol,0.9eq.)、硝酸コバルト六水和物(0.14g,0.5mmol,0.1eq.)、5-ニトロイソフタル酸(1.06g,5.0mmol,1.0eq.)、1,2-ジ(4-ピリジル)エテン(0.92g,0.50mmol,1.0eq.)、蒸留水(5mL)、およびジルコニアボール(3mmφ、25g)を加え、常温(25℃)、400rpmで1時間、反応させながら湿式摩砕(フリッチュ社クラシックライン(商標)P-7を使用)した。その後、内容物を桐山漏斗(商標)を用いて濾過し、析出した金属錯体をイオン交換水、エタノールの順で洗浄後、乾燥した。目的の金属錯体(金属錯体2)は桃色固体として1.81g(収率:79%)得られた。得られた金属錯体2は粉末X線回折パターン測定により、図1および図2に示した擬ダイヤモンド骨格が三重に相互貫入した構造を有する金属錯体であることを確認した。
[ZnFe(NO2ip)(bpe)]の合成(金属錯体3)
ジルコニア製容器(45mL)に、酸化亜鉛(0.37g,4.5mmol,0.9eq.)、硝酸アンモニウム鉄六水和物(0.23g,0.5mmol,0.1eq.)、5-ニトロイソフタル酸(1.06g,5.0mmol,1.0eq.)、1,2-ジ(4-ピリジル)エテン(0.92g,0.50mmol,1.0eq.)、蒸留水(5mL)、およびジルコニアボール(3mmφ、25g)を加え、常温(25℃)、400rpmで1時間、反応させながら湿式摩砕(フリッチュ社クラシックライン(商標)P-7を使用)した。その後、内容物を桐山漏斗(商標)を用いて濾過し、析出した金属錯体をイオン交換水、エタノールの順で洗浄後、乾燥した。目的の金属錯体(金属錯体3)は茶色固体として1.98g(収率:84%)得られた。得られた金属錯体3は粉末X線回折パターン測定により、図1および図2に示した擬ダイヤモンド骨格が三重に相互貫入した構造を有する金属錯体であることを確認した。
[ZnCu(NO2ip)(bpe)]の合成(金属錯体4)
ジルコニア製容器(45mL)に、酸化亜鉛(0.37g,4.5mmol,0.9eq.)、硝酸銅三水和物(0.15g,0.5mmol,0.1eq.)、5-ニトロイソフタル酸(1.07g,5.0mmol,1.0eq.)、1,2-ジ(4-ピリジル)エテン(0.93g,0.50mmol,1.0eq.)、蒸留水(5mL)、およびジルコニアボール(3mmφ、25g)を加え、常温(25℃)、400rpmで1時間、反応させながら湿式摩砕(フリッチュ社クラシックライン(商標)P-7を使用)した。その後、内容物を桐山漏斗(商標)を用いて濾過し、析出した金属錯体をイオン交換水、エタノールの順で洗浄後、乾燥した。目的の金属錯体(金属錯体4)は青色固体として1.92g(収率:81%)得られた。得られた金属錯体4は粉末X線回折パターン測定により、図1および図2に示した擬ダイヤモンド骨格が三重に相互貫入した構造を有する金属錯体であることを確認した。
合成例2~4で得た金属錯体2~4それぞれについて、25℃における1,3-ブタジエン、および1-ブテンの吸脱着等温線を測定した。結果を図8~10に示す。
PS1、PS2 製品貯槽
AC1、AC2 吸着塔
P1 真空ポンプ
V1~V8 バルブ
M 混合ガス
B ブタン、ブテン類が濃縮されたガス
BD 1,3-ブタジエンを主成分とするガス
Claims (13)
- 1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガス中から1,3-ブタジエンを選択的に吸着する1,3-ブタジエン分離材であって、下記一般式(I):
ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム、チタン、バナジウム、クロム、マンガン、鉄、ルテニウム、コバルト、ロジウム、ニッケル、パラジウム、白金、銅、亜鉛およびカドミウムからなる群より選択される少なくとも1種の金属のイオンと、
下記一般式(II):
- 前記金属のイオンが亜鉛イオンである請求項1に記載の1,3-ブタジエン分離材。
- 一般式(II)で示される有機配位子(II)が、R5、R6、R7、R8、R9、R10、R11およびR12のすべてが水素原子でありXが-CH=CH-である1,2-ジ(4-ピリジル)エテンである請求項1または2のいずれかに記載の1,3-ブタジエン分離材。
- 一般式(I)で示されるジカルボン酸化合物(I)が、R1、R3およびR4が水素原子であり、R2が水素原子、メチル基またはニトロ基のいずれかである請求項1~3のいずれか一項に記載の1,3-ブタジエン分離材。
- 前記金属錯体が、擬ダイヤモンド骨格が三重に相互貫入した構造を有する請求項1~4のいずれか一項に記載の1,3-ブタジエン分離材。
- 前記1,3-ブタジエン以外の炭素数4の炭化水素がブテンおよびブタンである請求項1~5のいずれか一項に記載の1,3-ブタジエン分離材。
- 1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガスを分離材と接触させ、1,3-ブタジエンを前記分離材に選択的に吸着させる吸着工程と、その後、前記分離材に吸着された1,3-ブタジエンを前記分離材から脱着させて、脱離してくる1,3-ブタジエンを捕集する再生工程とを含む、混合ガスから1,3-ブタジエンを分離する方法において、前記分離材が請求項1~6のいずれか一項に記載の1,3-ブタジエン分離材であることを特徴とする1,3-ブタジエンの分離方法。
- 前記1,3-ブタジエン以外の炭素数4の炭化水素がブテンおよびブタンである請求項7に記載の1,3-ブタジエンの分離方法。
- 前記分離方法が圧力スイング吸着法である請求項7または8のいずれかに記載の1,3-ブタジエンの分離方法。
- 前記分離方法が温度スイング吸着法である請求項7または8のいずれかに記載の1,3-ブタジエンの分離方法。
- 多孔質支持体と、前記多孔質支持体の表層部に付着した請求項1~6のいずれか一項に記載の1,3-ブタジエン分離材とを含む1,3-ブタジエン分離膜。
- 高分子材料と、前記高分子材料に混練分散された請求項1~6のいずれか一項に記載の1,3-ブタジエン分離材とを含む1,3-ブタジエン分離膜。
- 1,3-ブタジエンおよび1,3-ブタジエン以外の炭素数4の炭化水素を含む混合ガスを分離膜に接触させ、前記分離膜を通して1,3-ブタジエンを選択的に透過させることを含む、前記混合ガスよりも1,3-ブタジエン濃度が高いガスを得る1,3-ブタジエンの分離方法において、前記分離膜が請求項11または12のいずれかに記載の1,3-ブタジエン分離膜であることを特徴とする1,3-ブタジエンの分離方法。
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CN104395268A (zh) | 2015-03-04 |
CN104395268B (zh) | 2016-03-23 |
KR101700206B1 (ko) | 2017-01-26 |
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