WO2015012068A1 - 炭化水素吸着用成形体 - Google Patents
炭化水素吸着用成形体 Download PDFInfo
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- WO2015012068A1 WO2015012068A1 PCT/JP2014/067520 JP2014067520W WO2015012068A1 WO 2015012068 A1 WO2015012068 A1 WO 2015012068A1 JP 2014067520 W JP2014067520 W JP 2014067520W WO 2015012068 A1 WO2015012068 A1 WO 2015012068A1
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 1
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- JPNZKPRONVOMLL-UHFFFAOYSA-N azane;octadecanoic acid Chemical class [NH4+].CCCCCCCCCCCCCCCCCC([O-])=O JPNZKPRONVOMLL-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000006309 butyl amino group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- SXTLQDJHRPXDSB-UHFFFAOYSA-N copper;dinitrate;trihydrate Chemical compound O.O.O.[Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O SXTLQDJHRPXDSB-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 125000004914 dipropylamino group Chemical group C(CC)N(CCC)* 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical group 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 125000006316 iso-butyl amino group Chemical group [H]N(*)C([H])([H])C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- LVPMIMZXDYBCDF-UHFFFAOYSA-N isocinchomeronic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)N=C1 LVPMIMZXDYBCDF-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000005928 isopropyloxycarbonyl group Chemical group [H]C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 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 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229960003512 nicotinic acid Drugs 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
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- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- QMMOXUPEWRXHJS-UHFFFAOYSA-N pentene-2 Natural products CCC=CC QMMOXUPEWRXHJS-UHFFFAOYSA-N 0.000 description 1
- GYDSPAVLTMAXHT-UHFFFAOYSA-N pentyl 2-methylprop-2-enoate Chemical compound CCCCCOC(=O)C(C)=C GYDSPAVLTMAXHT-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 125000006308 propyl amino group Chemical group 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000004742 propyloxycarbonyl group Chemical group 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical group CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- GJAWHXHKYYXBSV-UHFFFAOYSA-N pyridinedicarboxylic acid Natural products OC(=O)C1=CC=CN=C1C(O)=O GJAWHXHKYYXBSV-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3007—Moulding, shaping or extruding
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic Table
- C07F1/08—Copper compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/06—Zinc compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
- B01D2253/1122—Metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
Definitions
- the present invention relates to an adsorbent molded body that can be used as an adsorbent, occlusion material, or separation material for hydrocarbon molecules, and more specifically, a mode in which a porous metal complex having an adsorption action is used as an adsorbent, occlusion material, or separation material.
- a porous metal complex having an adsorption action is used as an adsorbent, occlusion material, or separation material.
- Patent Document 1 describes a porous metal complex in which characteristics of both a gate-type polymer complex that exhibits gas adsorption as a gate and an I-type complex that adsorbs gas as an I type change depending on a switching material.
- Patent Documents 2 and 3 describe a porous metal complex that selectively adsorbs only a specific gas with a change in pore structure or size.
- Patent Document 3 and Non-Patent Document 1 also describe a flexible porous metal complex whose structure changes depending on the type of gas in contact with it and a gas separation method using the same.
- porosity means that the metal complex has a special structure (void) at the molecular level with a size capable of taking in and releasing hydrocarbon molecules to be adsorbed.
- void a special structure at the molecular level with a size capable of taking in and releasing hydrocarbon molecules to be adsorbed.
- the shape and / or size of the void may change due to a structural change caused by an external stimulus such as pressure.
- Patent Document 4 describes a molded body composed of a porous metal complex and a binder, but the binder is an inorganic compound, and there is no description about the influence on the adsorption / desorption behavior of the molded body.
- the adsorbent powder may be formed into a pellet to facilitate handling. It is common.
- the pellets are molded by compressing the adsorbent powder using a tablet molding machine or the like.
- a porous metal complex with a flexible structure that changes its structure with gas adsorption like the aforementioned porous metal complex is pelletized by tableting using a general binder resin. In such a case, if the tablet is compressed at a high pressure so that the molded body has sufficient strength, or if a large amount of binder is added and molded, the adsorption performance may be lowered.
- the present invention has been made paying attention to such circumstances, and the purpose thereof is adsorption that can sufficiently exhibit the adsorption / desorption performance inherent in the porous metal complex whose structure can be changed by gas adsorption / desorption. It is to provide a molded body.
- the inventors of the present invention consist of a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group (—SO 2 OH) in the metal complex (A).
- a polymer binder component (B) containing at least one functional group selected from the group in the molecule in a total of 0.3 mmol / g or more and 8.0 mmol / g or less is mixed to form a molded body.
- the present invention was completed by discovering that the molded body can follow the structural change of the porous metal complex due to gas adsorption / desorption, and can sufficiently exhibit the excellent adsorption / desorption performance of the metal complex (A). That is, the present invention relates to the following [1] to [14].
- [1] Selected from the group consisting of a metal complex (A) composed of a metal ion and an organic ligand capable of binding to the metal ion, and a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group. And a polymer binder component (B) containing a total of at least one functional group in the molecule of 0.3 mmol / g or more and 8.0 mmol / g or less.
- A a metal complex
- B organic ligand capable of binding to the metal ion
- a polymer binder component (B) containing a total of at least one functional group in the molecule of 0.3 mmol / g or more and 8.0 mmol / g or less.
- Organic ligand (1) An organic compound having two or more carboxyl groups and / or hydroxyl groups, having no heterocyclic ring and capable of bidentate coordination with a metal ion.
- Organic ligand (2) carboxyl group or A saturated or unsaturated monocyclic or polycyclic heterocyclic compound having a hydroxyl group and having one heteroatom selected from N, O or S in the ring and capable of bidentate coordination with a metal ion Organic ligand (3): a saturated or unsaturated monocyclic ring having two or more heteroatoms selected from the group consisting of N, O and S in a ring or a plurality of rings and capable of bidentate coordination with a metal ion Formula or polycyclic heterocyclic compound [7]
- the organic ligand (1) is an alkylene dicarboxylic acid compound having 4 to 20 carbon atoms, an alkenylene dicarboxylic acid compound having 4 to 20 carbon atoms, a dicarboxylic acid compound represented by the following general formulas (I) to (IV), And the molded object for hydrocarbon adsorption as described in [6] which is at least 1 type selected from the group which consists of a hydroxycarboxylic acid compound
- each R 1 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a formyl group, an acyloxy group having 1 to 4 carbon atoms, or 1 carbon atom.
- each R 2 independently represents a hydrogen atom, a halogen atom or an alkyl group having 1 to 4 carbon atoms
- X represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkenyl group having 2 to 4 carbon atoms.
- each R 3 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. is there.
- the organic ligand (2) is at least one selected from the group consisting of compounds represented by the following general formulas (VI) to (VIII).
- each R 3 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. is there.
- the organic ligand (3) is at least one selected from the group consisting of compounds represented by the following general formulas (IX) to (XII).
- Y is an oxygen atom, a sulfur atom, —CH 2 —, —CH (OH) —, —CO—, —NH—, —C 2 N 4 —, —C ⁇ C—, —C 2 H 2 - or -C 6 H 4 - a and, R 4 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a formyl group, a C1- 4 acyloxy groups, alkoxycarbonyl groups having 1 to 4 carbon atoms, nitro groups, cyano groups, carboxyl groups, amino groups, monoalkylamino groups having 1 to 4 carbon atoms, alkyl groups having 1 to 4 carbon atoms Or a dialkylamino group having 1 to 4 carbon atoms, and n is an integer of 0 to 3.
- the molded article for adsorbing hydrocarbons of the present invention is a molded article that does not significantly impair the original adsorption performance of the porous metal complex (A).
- the molded article for adsorbing hydrocarbons according to the present invention can easily recover the adsorption performance when placed in a reduced pressure environment. Therefore, the molded article for adsorbing hydrocarbons of the present invention can be used for applications of an adsorbent, an occlusion material, or a separation material depending on the purpose.
- FIG. 2 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the metal complex (1).
- 2 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the molded article (1) of Example 1.
- FIG. 2 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the molded body (2) of Example 2.
- FIG. 2 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the metal complex (2).
- 2 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the molded article (3) of Example 3.
- FIG. 6 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the molded body (4) of Example 4.
- FIG. FIG. 6 is an adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. for the molded article (11) of Comparative Example 7.
- FIG. It is a powder X-ray-diffraction pattern of a metal complex (1). It is a powder X-ray-diffraction pattern of a metal complex (2).
- the hydrocarbon adsorption molded article of the present invention is a porous metal complex (A) having a porous structure composed of metal ions and an organic ligand capable of binding to the metal ions. And at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group is contained in the molecule at 0.3 mmol / g or more and 8.0 mmol / g or less. And a polymer binder component (B).
- A porous metal complex
- A having a porous structure composed of metal ions and an organic ligand capable of binding to the metal ions.
- at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group is contained in the molecule at 0.3 mmol / g or more and 8.0
- Suitable hydrocarbons (gases) to be adsorbed are hydrocarbons having 2 to 5 carbon atoms, such as ethane, ethylene, acetylene, propane, propylene, methylacetylene, n-butane, isobutane, 1-butene, trans-2-butene. , Isobutene, 1,3-butadiene, 3-methyl-1-butene, isopentane, 1-pentene, 2-methyl-1-butene, n-pentane, trans-2-pentene, isoprene, piperylene and the like. In particular, 1,3-butadiene is preferred.
- Metal complex (A) The metal complex (A) contained in the molded article for hydrocarbon adsorption according to the present invention has a porous structure formed from a metal ion and an organic ligand capable of binding to the metal ion. This porous structure includes pores at the molecular level, and gas molecules can be accommodated in the pores.
- the pores have a flexible structure that can selectively adsorb only a specific kind of gas with a change in structure or size by an external stimulus such as pressure. With such pores, a specific type of gas can be selectively adsorbed in the pores. Therefore, the metal complex (A) according to the present invention can be used as an adsorbent that adsorbs a specific gas for the purpose of adsorption, occlusion or separation.
- the size of the pores of the porous metal complex (A) according to the present invention is not particularly limited. For example, the size is preferably 2 to 50 mm, more preferably 2 to 30 mm, and further preferably 2 to 20 mm. is there.
- the metal ion constituting the metal complex (A) of the present invention is not particularly limited as long as it can form pores capable of accommodating a specific molecule by organization with an organic ligand, but preferably Examples include cation of at least one metal selected from the group consisting of magnesium, calcium, aluminum, vanadium, manganese, iron, cobalt, nickel, copper, zinc, cadmium, lead and palladium. More preferably, it is at least one metal ion selected from magnesium, aluminum, copper and zinc. Most preferred is copper or zinc.
- Organic Ligand The organic ligand constituting the metal complex (A) of the present invention has two or more sites capable of coordinating with a metal ion in the molecule, and is identified by organization with the metal ion.
- the organic compound is not particularly limited as long as it is capable of constituting a porous structure having a plurality of pores capable of accommodating molecules, but is at least one organic compound selected from the group consisting of the following (1) to (3) Is preferred.
- Organic ligand (1) An organic compound having two or more carboxyl groups and / or hydroxyl groups, having no heterocyclic ring and capable of bidentate coordination with a metal ion.
- Organic ligand (2) carboxyl group or A saturated or unsaturated monocyclic or polycyclic heterocyclic compound having a hydroxyl group and having one heteroatom selected from N, O or S in the ring and capable of bidentate coordination with a metal ion
- Organic ligand (3) a saturated or unsaturated monocyclic ring having two or more heteroatoms selected from the group consisting of N, O and S in a ring or a plurality of rings and capable of bidentate coordination with a metal ion Formula or polycyclic heterocyclic compound
- Organic ligand (1) An organic compound having two or more carboxyl groups and / or hydroxyl groups, having no heterocyclic ring and capable of bidentate coordination with a metal ion>
- the organic ligand (1) include alkylene dicarboxylic acid compounds having 4 to 20 carbon atoms (the carbon number includes carbon constituting a carboxyl group), alkenylene dicarboxylic acid compounds having 4 to 20 carbon atoms (carbon number). Includes carbon constituting a carboxyl group), dicarboxylic acid compounds represented by the following general formulas (I) to (IV), and hydroxycarboxylic acid compounds represented by the following general formula (V) .
- the number of carbon atoms of the alkylene dicarboxylic acid compound having 4 to 20 carbon atoms is preferably 4 to 10 from the viewpoint of the pore size of the resulting complex. Is more preferable. Specific examples include succinic acid, glutaric acid, and adipic acid. Of these, succinic acid is preferred.
- the number of carbon atoms of the alkenylene dicarboxylic acid compound having 4 to 20 carbon atoms is preferably 4 to 10 from the viewpoint of the pore size of the resulting complex. Is more preferable. Specific examples include fumaric acid, glutaconic acid, and muconic acid (hexenedicarboxylic acid).
- each R 1 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a formyl group, or an alkyl group having 1 to 4 carbon atoms.
- An acyloxy group an alkoxycarbonyl group having an alkoxy group having 1 to 4 carbon atoms, a nitro group, a cyano group, a carboxyl group, an amino group, a monoalkylamino group having 1 to 4 carbon atoms, or an alkyl group having 1 to 4 carbon atoms It is a dialkylamino group or an acylamino group having 1 to 4 carbon atoms, and two or more R 1 may be condensed to form a ring. In the dialkylamino group, the two alkyl groups may be the same or different.
- Fluorine and chlorine atoms are preferred as the halogen atom.
- the alkyl group having 1 to 4 carbon atoms may be linear, branched or cyclic, and examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, and a butyl group.
- Examples of the alkoxy group having 1 to 4 include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group.
- the acyloxy group having 1 to 4 carbon atoms is a linear or branched group having 1 to 4 carbon atoms.
- Examples thereof include those substituted with an alkyl group (for example, an acetoxy group, a propionyloxy group, an isopropionyloxy group, etc.), and the alkoxycarbonyl group having an alkoxy group having 1 to 4 carbon atoms is a straight chain having 1 to 4 carbon atoms.
- an alkyl group for example, an acetoxy group, a propionyloxy group, an isopropionyloxy group, etc.
- the alkoxycarbonyl group having an alkoxy group having 1 to 4 carbon atoms is a straight chain having 1 to 4 carbon atoms.
- branched alkyl group substituted for example, methoxycarbonyl group, ethoxycarbonyl group, propoxycarbonyl group, isopropoxycarbonyl group
- monoalkylamino group having 1 to 4 carbon atoms include those substituted with a linear or branched alkyl group having 1 to 4 carbon atoms (eg, methylamino group, ethylamino group, etc.).
- dialkylamino groups having 1 to 4 carbon atoms include straight-chain or branched alkyls having 1 to 4 carbon atoms
- examples of the acylamino group having 1 to 4 carbon atoms include those having a group substituted (eg, dimethylamino group, diethylamino group, dipropylamino group, diisopropylamino group, disec-butylamino group).
- 1 to 4 linear or branched alkyl groups substituted for example, acetylamino group, propionylamino group, etc.
- R 1 is preferably a hydrogen atom.
- each R 2 is independently a hydrogen atom, a halogen atom or an alkyl group having 1 to 4 carbon atoms
- X is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkyl group having 2 to 4 carbon atoms.
- the alkenyl group having 2 to 4 carbon atoms may be linear, branched or cyclic, and examples thereof include a vinyl group, an allyl group, a crotyl group, etc., and an alkynyl group having 2 to 4 carbon atoms. As such, it may be linear or branched, and examples thereof include an ethynyl group, a propargyl group, and a butynyl group.
- R 2 and X are the same as those described for R 1 . Among these, R 2 is preferably a hydrogen atom.
- X is preferably a nitro group, hydrogen, or methyl group from the viewpoint of raw material costs.
- each R 3 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or an alkoxy having 1 to 4 carbon atoms. It is a group. Specific examples of R 3 are the same as those described for R 1 and R 2 above. Among these, R 3 is preferably a hydrogen atom.
- organic ligand (1) fumaric acid, terephthalic acid, isophthalic acid, 5-nitroisophthalic acid, and methyl isophthalic acid are preferable.
- Organic ligand (2) Saturated or unsaturated having a carboxyl group or a hydroxyl group and having one heteroatom selected from N, O or S in the ring and capable of bidentate coordination with a metal ion Monocyclic or polycyclic heterocyclic compound>
- the organic ligand (2) include organic compounds represented by the following general formulas (VI) to (VIII).
- each R 3 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or a carbon number. 1 to 4 alkoxy groups.
- R 3 is preferably a hydrogen atom.
- organic ligand (2) pyridinedicarboxylic acid, isonicotinic acid and nicotinic acid are preferable.
- Organic Ligand (3) A saturated or unsaturated single atom capable of bidentate coordination with a metal ion having two or more heteroatoms selected from the group consisting of N, O and S in one or more rings. Cyclic or polycyclic heterocyclic compound> Examples of the organic ligand (3) include organic compounds represented by the following general formulas (IX) to (XII).
- Y represents an oxygen atom, a sulfur atom, —CH 2 —, —CH (OH) —, —CO—, —NH—, —C 2 N 4 — ( 1,2,4,5-tetrazine-3,6-diyl group), —C ⁇ C—, —C 2 H 2 — or —C 6 H 4 —, preferably —C 2 H 2 — or — C 6 H 4 —.
- R 4 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a formyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxy having 1 to 4 carbon atoms
- R 4 are the same as those described for R 1 above.
- n is an integer of 0 to 3, preferably 0 or 1.
- organic ligands may be used alone or in combination of two or more, and may be appropriately selected according to the type of gas to be adsorbed.
- organic compounds alkylene dicarboxylic acid compounds having 4 to 20 carbon atoms, organic compounds represented by general formula (I), general formula (IV), general formula (IX), and general formula (X) are preferable.
- the combination when two or more organic ligands are used.
- a combination of organic ligands selected from the organic ligand (1) and the organic ligand (3), and two or more organic compounds selected from the organic ligand (3) are used.
- a combination of ligands is preferred, more preferably a combination of the general formula (I) and the organic compound represented by the general formula (IX), a combination of the organic compound represented by the general formula (IV) and the general formula (IX), Examples include combinations of organic compounds represented by formula (X) and general formula (IX), and combinations of two or more organic compounds represented by general formula (X), more preferably 5-nitroisophthalic acid and 1 , 2-bis (4-pyridyl) ethylene, and 2,3-pyrazinecarboxylic acid and pyrazine.
- the metal complex (A) is prepared by using a metal salt of the above metal (for example, nitrate, sulfate, formate, acetate, carbonate, hydrochloride, hydrobromide, tetrafluoroborate) Salt, hexafluorophosphate, etc.) and the above-mentioned organic ligand are dissolved in water or an organic solvent and reacted for several hours to several days.
- the organic solvent only needs to dissolve the metal salt and the organic ligand.
- reaction conditions are not particularly limited, and may be appropriately adjusted according to the progress of the reaction.
- the reaction temperature is preferably room temperature (25 ° C.) to 150 ° C.
- Examples of the form of the metal complex (A) according to the present invention include various forms such as a granular form, a powder form, a fiber form, a film form, and a plate form, and preferably a powder form.
- the metal complex (A) having an average particle diameter of 1 ⁇ m to 500 ⁇ m (more preferably 5 ⁇ m to 100 ⁇ m) can be preferably used.
- the “average particle diameter” is a 50% diameter (median diameter), and can be measured by, for example, a laser diffraction / scattering particle size distribution measuring apparatus.
- the amount of the metal complex (A) contained in the molded article for hydrocarbon adsorption according to the present invention is preferably 50% by mass to 97% by mass.
- the content of the metal complex (A) is more preferably 70% by mass to 97% by mass.
- the productivity of the molded article for hydrocarbon adsorption decreases. There is a tendency that strength cannot be obtained.
- Polymer binder component (B) The polymer binder component (B) in the present invention is a component that functions as a binder for binding the metal complex (A) particles. From the viewpoint of binding the metal complex (A) as a molded article for hydrocarbon adsorption, it is desirable that the polymer binder component (B) is excellent in compatibility with the hydrocarbon to be adsorbed. 7.
- the polymer binder component (B) has at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group in the molecule of 0.3 mmol / g or more; Contains 0 mmol / g or less.
- the weight average molecular weight of the polymer binder component (B) is 1000 or more, preferably 5000 or more.
- the polymer binder component (B) preferably has a glass transition temperature (Tg) that is equal to or higher than the use temperature when the hydrocarbon gas adsorption / desorption operation of the present invention is performed.
- the polymer binder component (B) has at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, a mercapto group, an epoxy group, and a sulfo group in the molecule of 0.3 mmol / g or more; Contains 0 mmol / g or less.
- these functional groups a hydroxyl group and a carboxyl group are preferable from the viewpoint of interaction with a metal.
- the total amount thereof is within the above range. If the content of the functional group is less than 0.3 mmol / g, the molded product may have insufficient strength.
- the number (mmol) of functional groups per gram of the polymer binder component can be measured by spectroscopic measurement such as IR spectrum and NMR, or can be calculated from the composition used in the production of the polymer binder component.
- the polymer binder component (B) is preferably at least one of an ethylenic hydrocarbon polymer, polyester, polyamide, and polyether, and includes (meth) acrylic acid and (meth) acrylic acid ester having 1 to 10 carbon atoms.
- the copolymer is particularly preferred.
- “(Meth) acrylic acid” means “acrylic acid” or “methacrylic acid”.
- ethylenic hydrocarbon polymer examples include partially saponified polyvinyl acetate, partially saponified polyvinyl butyrate, polyvinyl butyral resin, a copolymer of methyl methacrylate and hydroxyethyl methacrylate, and a copolymer of methyl methacrylate and methacrylic acid.
- Copolymer of ethyl methacrylate and methacrylic acid Copolymer of propyl methacrylate and methacrylic acid, copolymer of butyl methacrylate and methacrylic acid, copolymer of amyl methacrylate and methacrylic acid, 2-ethylhexyl methacrylate And methacrylic acid copolymer, methyl acrylate and hydroxyethyl acrylate copolymer, methyl acrylate and acrylic acid copolymer, ethyl acrylate and acrylic acid copolymer, propyl acrylate and acrylic acid Copolymer, Copolymer of butyl acrylate and acrylic acid , Partially saponified product of ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / methacrylic acid copolymer, styrene / acrylic acid copolymer, styrene / methacryl
- polyester examples include polyethylene terephthalate, polybutylene terephthalate, and polylactic acid.
- examples of the polyamide include 6-nylon (registered trademark) and 6,6-nylon (registered trademark).
- the polyether examples include polyethylene glycol, polypropylene glycol, polyoxymethylene, polyphenylene ether and the like. These polymers have a functional group at the end, but if the amount of the functional group required by the present invention is not reached, the functional group is introduced by copolymerization (co-condensation) with a monomer having a functional group in the side chain. can do.
- the polymer binder component (B) may be used alone or in combination of two or more. In the case of a mixture, the number of functional groups as a whole may be within the above range.
- the amount of the polymer binder component (B) contained in the molded article for hydrocarbon adsorption according to the present invention is preferably 3% by mass to 20% by mass. If the content of the polymer binder component (B) is less than 3% by mass, the strength of the molded product tends to be insufficient. On the other hand, if the content exceeds 20% by mass, the metal complex (A) contained in the molded product for hydrocarbon adsorption. Therefore, there is a possibility that it is difficult to obtain a sufficient adsorption effect. More preferably, it is 5% by mass to 15% by mass, and further preferably 5% by mass to 12% by mass.
- Lubricant (C) In the present invention, a lubricant (C) for preventing tableting failure may be used as necessary.
- the lubricant (C) is not particularly limited as long as it can prevent tableting defects such as capping during tableting.
- Specific examples of the lubricant (C) include graphite, boron nitride, stearic acid, and stearates.
- the amount of the lubricant (C) is preferably 0.1% by mass to 5% by mass with respect to 100% by mass in total of the constituent components of the molded article for hydrocarbon adsorption. More preferably, the content is 1% by mass to 4% by mass. If the amount of the lubricant (C) is less than 0.1% by mass, defective tableting such as capping cannot be prevented, and the yield of the molded product may be deteriorated. On the other hand, if it exceeds 5% by mass, the molded product becomes insufficient in strength, or the amount of metal complex (A) in the molded product for hydrocarbon adsorption becomes relatively small, so that it is difficult to obtain a sufficient adsorption effect. .
- the molded article for hydrocarbon adsorption of the present invention may contain additives other than the metal complex (A), the polymer binder component (B) and the lubricant (C) as necessary.
- the additive include glass fiber, polymer flocculant, and pigment for the purpose of improving the mechanical strength of the molded body.
- the amount of these components used is preferably 0% by mass to 10% by mass (more preferably 0% by mass to 3% by mass) with respect to 100% by mass as a total of the constituent components of the adsorption sheet.
- Production method of molded article for hydrocarbon adsorption is not particularly limited, and examples thereof include a tableting molding method and the like.
- the metal complex (A), the polymer binder component (B) and other components are mixed and granulated at a predetermined blending ratio.
- mixing may be performed while adding a solvent capable of dissolving the polymer binder component by spraying or the like, or by adding a solution of the polymer binder component and evaporating the solvent.
- the obtained granulated product, the optional lubricant (C) and other components are mixed at a predetermined blending ratio, and tableted with an arbitrary pressure using a tableting machine.
- the pellets obtained by tableting are subjected to an annealing treatment for removing water and the like contained in the manufacturing process.
- the annealing temperature may be higher than the temperature at which water or the like can be removed.
- the annealing strength is higher than the glass transition temperature of the polymer binder component (B).
- the size of the molded article for adsorbing hydrocarbons of the present invention is preferably 0.5 mm to 5 mm. More preferably, it is 1 mm to 3 mm, and further preferably 1.6 mm to 2 mm. If it is too small, there is a risk that the strength of the molded body will be insufficient and the productivity will deteriorate. If it is too large, the amount of adsorption per hour may be reduced due to the diffusion inside the molded body.
- the molded article for adsorbing hydrocarbons according to the present invention can selectively adsorb only a specific kind of hydrocarbon gas with a change in structure and / or size, and can absorb the hydrocarbon gas by a change in pressure. Since it has a desorbable metal complex (A), it has excellent separation performance for separating a specific hydrocarbon gas from a mixed gas. In addition, since the component constituting the molded article for hydrocarbon adsorption is relatively flexible and can follow the structural change of the metal complex (A), the metal complex even in the shape of the molded article for hydrocarbon adsorption. The excellent performance of (A) can be exhibited. Therefore, the molded article for hydrocarbon adsorption of the present invention is preferably used as an adsorbent in, for example, a pressure swing adsorption gas separation apparatus.
- the total amount of the metal complex (A), the polymer binder component (B), and the lubricant (C) is 100 parts by mass.
- Tetrahydrofuran is added to a predetermined amount of the metal complex (A) and the polymer binder component (B). 200 parts by mass were mixed, kneaded in a mortar, pulverized while air-dried, and passed through a 0.75 mm mesh sieve to obtain a granulated product.
- graphite as a lubricant (C) was added and mixed well so that the composition in 100 parts by mass of the molded product was 3 parts by mass, and tableted using a tableting machine at a tableting pressure of 600 MPa.
- a cylindrical shaped body (pellet) having a thickness of about 4 mm and a diameter of 3 mm was produced.
- the obtained molded body was dried under reduced pressure at 150 ° C. and 50 Pa for 6 hours or more to remove adsorbed water and the like and subjected to each test.
- the metal complex or molded body (pellet) used in the examples and comparative examples is a gas adsorption amount measuring device ("BELSORP (registered trademark) -HP" manufactured by Nippon Bell Co., Ltd.) or "BELSORP ( (Registered Trademark) -18HT "), and a volume method (equilibrium waiting time: 500 seconds) was measured at 25 ° C., and an adsorption / desorption isotherm was prepared. In any sample, the measurement was performed such that the amount of the porous metal complex in the sample was 0.3 g to 0.5 g.
- the ratio of the effective adsorption amount per unit mass of the metal complex in the molded body to the effective adsorption amount of the original metal complex was calculated as the maintenance ratio (%). Since the adsorption / desorption speed varies depending on the type of metal complex, the reduced pressure retention time is changed for each type of metal complex. The fast adsorption / desorption rate was 1 minute, and the slow rate was 10 minutes.
- Metal complex (A) 3-1 Synthesis of metal complex (1): [Cu 2 (pzdc) 2 (prz)] Copper nitrate trihydrate (1.23 g, 5.0 mmol, 1.0 eq.), Pyrazine (4. 05 g, 50.0 mmol, 10.0 eq.) And pure water (100 ml) were added and mixed. To the obtained blue transparent solution, a mixed solution of an aqueous solution (80 ml) of 2,3-pyrazinedicarboxylic acid (0.84 g, 5.0 mmol, 1.0 eq.) And an aqueous 1N NaOH solution (20 ml) was added dropwise. .
- the powder X-ray diffraction pattern of the obtained metal complex (1) was measured.
- the measurement results are shown in FIG.
- Lubricant (C) Graphite manufactured by Nippon Graphite Industry Co., Ltd., ACP was used as the lubricant (C).
- Example 1 Molded body (1)
- the composition in the molded product was 87 parts by mass of metal complex (1), 10 parts by mass of polymer binder 1 (MMA / MAA-1), 200 parts by mass of tetrahydrofuran, kneaded in a mortar, and pulverized while air-drying, What passed through a 0.5 mm mesh sieve was obtained as a granulated product.
- graphite as a lubricant (3) was added and mixed well so that the composition in 100 parts by mass of the molded product was 3 parts by mass, and a molded product was produced using a tableting molding machine at room temperature.
- the obtained molded body was dried under reduced pressure at 150 ° C. and 50 Pa for 6 hours or more to remove adsorbed water and the like to obtain a molded body (1).
- the adsorption and desorption isotherm of 1,3-butadiene at 25 ° C. was measured for the metal complex (1) and the molded body (1). The results are shown in FIGS.
- the vertical axis represents the amount of adsorption of the target gas (1,3-butadiene) per unit mass. The same applies to FIGS. 3 to 7 below.
- the effective adsorption amount of 1,3-butadiene in the metal complex (1) and the molded body (1) is 15.9 ml (STP) / g and 13.2 ml (STP), respectively, when the reduced pressure holding time is 10 minutes. ) / G.
- the 1,3-butadiene adsorption amounts of the metal complex (1) and the molded body (1) at a pressure of 180 kPa were 43 ml (STP) and 30 ml (STP), respectively.
- the amount of adsorption of the molded body (1) is 69% of that of the metal complex (1). This value corresponds to 80% when compared with the amount of adsorption per unit mass of the metal complex (1) contained in the molded body (1).
- the effective adsorption amount of the compact (1) is 83% of the metal complex (1), and adsorbs 1,3-butadiene corresponding to 95% (maintenance ratio) per unit weight of the metal complex. Recognize. From this result, it is clear that the molded article of the present invention does not greatly impair the adsorption performance of the porous metal complex powder, and is excellent as an adsorbent.
- the crushing strength of the molded product (1) after 1,3-butadiene adsorption measurement was measured was 108 N. It is clear that the molded body of the present invention has practical strength and is excellent as an adsorbent and a separating material.
- Examples 2 to 4, Comparative Examples 1 to 7 Except for the conditions shown in Table 1, a molded body was produced in the same manner as in Example 1 and subjected to various evaluation tests. The results are shown in Table 1. Further, 25 of the molded body (2), the metal complex (2) of Example 2, the molded body (3) of Example 3, the molded body (4) of Example 4, and the molded body (11) of Comparative Example 7. The adsorption and desorption isotherms of 1,3-butadiene at 0 ° C. are shown in FIGS.
- each molded body of the present invention does not significantly impair the adsorption performance in the powder state of the original metal complex and has practical strength. I understood that. From this result, it is clear that each molded body of the present invention is excellent as an adsorbent.
- the effective adsorption amount of 1,3-butadiene of the molded body (5) of Comparative Example 1 was only 50% of the effective adsorption amount of the metal complex (1) used. This is because in the molded body (5) produced using polymethacrylic acid as the polymer binder component, the polymer binder component is difficult to permeate 1,3-butadiene, and the porous metal complex (1) is inherently adsorbed. It is thought that the performance could not be demonstrated. From this result, it is clear that the adsorption performance of the porous metal complex (1) is impaired in a molded article produced using a polymer binder component having an excessive amount of functional groups.
- the crushing strength of the molded body (6) of Comparative Example 2 is lower than that of Examples 1 and 2, and the strength of the molded body produced using a polymer binder component having no sufficient functional group. Is clearly inferior.
- the effective adsorption amount of 1,3-butadiene of the molded body (7) of Comparative Example 3 was only 27% of the effective adsorption amount of the metal complex (1) used. This is because in the molded body (7) produced using 88% saponified polyvinyl acetate as the polymer binder component, the polymer binder component does not permeate 1,3-butadiene, and the metal complex (1) is inherent. It is thought that the adsorption performance could not be demonstrated. From this result, it is clear that the adsorption performance of the porous metal complex (1) is impaired in a molded article produced using a polymer binder component having an excessive amount of functional groups.
- the effective adsorption amount of 1,3-butadiene of the molded body (8) of Comparative Example 4 was 13% of the effective adsorption amount of the metal complex (2) used. This is because in the molded body (8) produced using polymethacrylic acid as the polymer binder component, the polymer binder component hardly permeates 1,3-butadiene and the metal complex (2) exhibits the original adsorption performance. Probably not. From this result, it is clear that the adsorption performance of the porous metal complex (2) is impaired in a molded article produced using a polymer binder component having an excessive amount of functional groups.
- the crushing strength of the molded body (9) of Comparative Example 5 is lower than that of Example 3 where the composition of the polymer binder component is close, and is produced using a polymer binder component that does not have a sufficient amount of functional groups. It was found that the molded body was inferior in strength.
- the crushing strength of the molded body (10) of Comparative Example 6 using PVAc having a relatively low material strength as a polymer binder component is lower than that of both Examples 3 and 4, and a sufficient amount of functionality It has been found that a molded body produced using a polymer binder component having no group is inferior in strength.
- the adsorption amount of 1,3-butadiene of the molded body (11) of Comparative Example 7 is only about 30% of the adsorption amount per unit mass of the used metal complex (2). It was. This is because in the molded body (11) produced using 88% polyvinyl acetate saponified product as the polymer binder component, the polymer binder component does not permeate 1,3-butadiene, and the metal complex (2) is inherently It is thought that the adsorption performance of this was not able to be demonstrated. From this result, it is clear that the adsorption performance of the metal complex (2) is impaired in a molded article produced using a polymer binder component having an excessive amount of functional groups.
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Abstract
Description
金属イオンと、前記金属イオンと結合可能な有機配位子とから構成される金属錯体(A)と、カルボキシル基、水酸基、アミノ基、メルカプト基、エポキシ基、及びスルホ基からなる群より選択される少なくとも1つの官能基を分子内に合計で0.3mmol/g以上、8.0mmol/g以下含有する高分子バインダー成分(B)とを含むことを特徴とする炭化水素吸着用成形体。
[2]
前記高分子バインダー成分(B)の官能基が、水酸基又はカルボキシル基である[1]に記載の炭化水素吸着用成形体。
[3]
前記高分子バインダー成分(B)がエチレン性炭化水素重合体、ポリエステル、ポリアミド、又はポリエーテルである[1]又は[2]のいずれかに記載の炭化水素吸着用成形体。
[4]
前記高分子バインダー成分(B)が(メタ)アクリル酸と炭素数1~10の(メタ)アクリル酸エステルとの共重合体である[1]~[3]のいずれかに記載の炭化水素吸着用成形体。
[5]
前記金属錯体(A)を50質量%~97質量%含有する[1]~[4]のいずれかに記載の炭化水素吸着用成形体。
[6]
前記有機配位子が、下記(1)~(3)からなる群より選択される少なくとも1種の有機化合物である[1]~[5]のいずれかに記載の炭化水素吸着用成形体。
有機配位子(1):カルボキシル基及び/又は水酸基を2つ以上有し、複素環を有さない、金属イオンに二座配位可能な有機化合物
有機配位子(2):カルボキシル基又は水酸基を有し、環内にN、O又はSから選択されるヘテロ原子を1つ有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物
有機配位子(3):1又は複数の環内にN、O及びSからなる群より選択されるヘテロ原子を2以上有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物
[7]
前記有機配位子(1)が、炭素数4~20のアルキレンジカルボン酸化合物、炭素数4~20のアルケニレンジカルボン酸化合物、下記一般式(I)~(IV)で表されるジカルボン酸化合物、及び下記一般式(V)で表されるヒドロキシカルボン酸化合物からなる群より選択される少なくとも一種である[6]に記載の炭化水素吸着用成形体。
[8]
前記有機配位子(2)が、下記一般式(VI)~(VIII)で表される化合物からなる群より選択される少なくとも一種である[6]に記載の炭化水素吸着用成形体。
[9]
前記有機配位子(3)が、下記一般式(IX)~(XII)で表される化合物からなる群より選択される少なくとも一種である[6]に記載の炭化水素吸着用成形体。
[10]
前記金属イオンが、銅又は亜鉛のイオンである[1]~[9]のいずれかに記載の炭化水素吸着用成形体。
[11]
吸着対象の前記炭化水素が、炭素数2~5の炭化水素である[1]~[10]のいずれかに記載の炭化水素吸着用成形体。
[12]
前記炭素数2~5の炭化水素が、1,3-ブタジエンである[11]に記載の炭化水素吸着用成形体。
[13]
打錠成形法により製造されたものである[1]~[12]のいずれかに記載の炭化水素吸着用成形体。
[14]
打錠成形で得られた[1]~[13]のいずれかに記載の成形体を、高分子バインダー成分(B)のガラス転移温度(Tg)以上の温度でアニールすることを特徴とする炭化水素吸着用成形体の製造方法。
本発明の炭化水素吸着用成形体は、金属イオンと、前記金属イオンと結合可能な有機配位子とから構成された多孔質構造を有する多孔性の金属錯体(A)と、カルボキシル基、水酸基、アミノ基、メルカプト基、エポキシ基、及びスルホ基からなる群より選択される少なくとも1つの官能基を分子内に0.3mmol/g以上、8.0mmol/g以下含有する高分子バインダー成分(B)とを含むことを特徴とする。吸着対象の好適な炭化水素(ガス)は炭素数2~5の炭化水素であり、エタン、エチレン、アセチレン、プロパン、プロピレン、メチルアセチレン、n-ブタン、イソブタン、1-ブテン、trans-2-ブテン、イソブテン、1,3-ブタジエン、3-メチル-1-ブテン、イソペンタン、1-ペンテン、2-メチル-1-ブテン、n-ペンタン、trans-2-ペンテン、イソプレン、ピペリレン等が挙げられる。特に1,3-ブタジエンが好ましい。
本発明の炭化水素吸着用成形体に含まれる金属錯体(A)は、金属イオンと該金属イオンと結合可能な有機配位子とから形成される多孔質構造を有している。この多孔質構造は分子レベルの細孔を含み、当該細孔内には気体分子を収容することができる。
本発明の金属錯体(A)を構成する金属イオンとしては、有機配位子との組織化により特定の分子を収容可能な細孔を形成できるものであれば特に限定されないが、好ましくはマグネシウム、カルシウム、アルミニウム、バナジウム、マンガン、鉄、コバルト、ニッケル、銅、亜鉛、カドミウム、鉛及びパラジウムからなる群より選択される少なくとも1種の金属の陽イオンが挙げられる。より好ましくは、マグネシウム、アルミニウム、銅及び亜鉛から選択される少なくとも1種の金属イオンである。もっとも好ましくは銅又は亜鉛である。
本発明の金属錯体(A)を構成する有機配位子としては、分子内に金属イオンと配位結合可能な部位を2つ以上有し、金属イオンとの組織化により特定の分子を収容し得る細孔を複数有する多孔質構造を構成できる有機化合物であれば特に限定されないが、下記(1)~(3)からなる群より選択される少なくとも1種の有機化合物であることが好ましい。
有機配位子(1):カルボキシル基及び/又は水酸基を2つ以上有し、複素環を有さない、金属イオンに二座配位可能な有機化合物
有機配位子(2):カルボキシル基又は水酸基を有し、環内にN、O又はSから選択されるヘテロ原子を1つ有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物
有機配位子(3):1又は複数の環内にN、O及びSからなる群より選択されるヘテロ原子を2以上有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物
有機配位子(1)としては、炭素数4~20のアルキレンジカルボン酸化合物(炭素数には、カルボキシル基を構成する炭素が含まれる)、炭素数4~20のアルケニレンジカルボン酸化合物(炭素数には、カルボキシル基を構成する炭素が含まれる)、下記一般式(I)~(IV)で表されるジカルボン酸化合物、及び下記一般式(V)で表されるヒドロキシカルボン酸化合物が挙げられる。
有機配位子(2)としては、下記一般式(VI)~(VIII)で表される有機化合物が挙げられる。
有機配位子(3)としては、下記一般式(IX)~(XII)で表される有機化合物が挙げられる。
金属錯体(A)は、上記金属の金属塩(例えば、硝酸塩、硫酸塩、蟻酸塩、酢酸塩、炭酸塩、塩酸塩、臭化水素酸塩、四フッ化ホウ酸塩、六フッ化リン酸塩等)と上述の有機配位子とを、水又は有機溶媒に溶解させ、数時間から数日間反応させることにより得られる。有機溶媒としては、上記金属塩及び有機配位子が溶解するものであればよく、例えば、メタノール、エタノール、プロパノール、ジエチルエーテル、テトラヒドロフラン、ヘキサン、シクロヘキサン、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、ジメチルスルホキシド(DMSO)、N,N-ジメチルホルムアミド(DMF)、水又はこれらの2種以上の混合溶媒等が使用できる。反応条件も特に限定されず、反応の進行度合いに応じて適宜調節すればよいが、例えば、反応温度は室温(25℃)~150℃とするのが好ましい。また、上記反応は加圧下で行ってもよい。
本発明における高分子バインダー成分(B)は、金属錯体(A)粒子を結着する結着剤として機能する成分である。炭化水素吸着用成形体として金属錯体(A)を結着させる観点からは、高分子バインダー成分(B)は吸着させる炭化水素との相溶性に優れていることが望ましい。高分子バインダー成分(B)はカルボキシル基、水酸基、アミノ基、メルカプト基、エポキシ基、及びスルホ基からなる群より選択される少なくとも1つの官能基を分子内に0.3mmol/g以上、8.0mmol/g以下含有する。高分子バインダー成分(B)の重量平均分子量は1000以上、好ましくは5000以上であること好ましい。高分子バインダー成分(B)は本発明の炭化水素吸着用成形体を用いて炭化水素ガスの吸脱着操作を行う時の使用温度以上のガラス転移温度(Tg)を有することが望ましい。
本発明においては、必要に応じて、打錠不良を防止するための滑剤(C)を使用してもよい。滑剤(C)としては、打錠時にキャッピング等の打錠不良を防止しうるものであれば特に制限されない。具体的な滑剤(C)としては、グラファイト、窒化ホウ素、ステアリン酸、ステアリン酸エステル類等が挙げられる。
本発明の炭化水素吸着用成形体は、金属錯体(A)、高分子バインダー成分(B)及び滑剤(C)以外の添加剤を必要に応じて含んでいてもよい。添加剤としては、例えば、成形体の機械的強度の向上を目的とするガラス繊維、高分子凝集剤、顔料等が挙げられる。なお、これらの成分の使用量は、吸着シートの構成成分の合計100質量%に対して0質量%~10質量%とするのが好ましい(より好ましくは0質量%~3質量%)。
本発明の炭化水素吸着用成形体の製造方法は特に限定されないが、例えば、打錠成形法等が挙げられる。打錠成形法によりペレット状物を作製する場合、まず、金属錯体(A)、高分子バインダー成分(B)及びその他の成分を所定の配合比で混合して造粒する。この際、高分子バインダー成分を溶解するような溶媒を噴霧等で加えながら混合してもよいし、高分子バインダー成分の溶液を加えて、溶媒を蒸発させながら混合してもよい。
本発明の炭化水素吸着用成形体は、構造及び/又はサイズの変化を伴いながら特定種類の炭化水素ガスのみを選択的に吸着でき、また、圧力の変化により当該炭化水素ガスを吸脱着し得る金属錯体(A)を有しているので、混合ガスから特定の炭化水素ガスを分離する分離性能に優れている。また、炭化水素吸着用成形体を構成する成分は比較的柔軟であり、金属錯体(A)の構造変化にも追随することができるため、炭化水素吸着用成形体の形状であっても金属錯体(A)が有する優れた性能を発揮することができる。そのため、本発明の炭化水素吸着用成形体は、例えば圧力スイング吸着法ガス分離装置における吸着剤として好ましく用いられる。
金属錯体(A)、高分子バインダー成分(B)、及び滑材(C)の合計を100質量部とし、所定量の金属錯体(A)と高分子バインダー成分(B)にテトラヒドロフラン200質量部を混合して乳鉢で混練し、風乾しながら粉砕し、0.75mmメッシュの篩を通過したものを造粒品として得た。これに滑剤(C)としてグラファイトを、成形体100質量部における組成が3質量部になるように加えてよく混合したものを、打錠成形機を用いて打錠圧600MPaで打錠して、厚み約4mm、直径3mmの円柱状の成形体(ペレット)を製造した。得られた成形体を150℃、50Paで6時間以上減圧乾燥し、吸着水などを除去して各試験に供した。
2-1.吸脱着等温線
実施例及び比較例で用いた金属錯体又は成形体(ペレット)をガス吸着量測定装置(日本ベル株式会社製「BELSORP(登録商標)-HP」又は日本ベル株式会社製「BELSORP(登録商標)-18HT」)を用いて容量法(平衡待ち時間:500秒)、25℃で測定し、吸脱着等温線を作成した。いずれの試料の場合も、試料中の多孔性金属錯体量が0.3g~0.5gとなるようにして測定した。
実施例及び比較例で得られた金属錯体及び成形体(ペレット)を150℃、50Paで6時間以上減圧乾燥し、吸着水などを除去し、ガス吸着装置(日本ベル株式会社製「BELSORP(登録商標)-HP」)を用いて一度ガスを吸着させた後、25℃、50Paの減圧状態で所定の時間(減圧保持時間)保持した後、容量法(平衡待ち時間:300秒)で測定し、25℃、140kPaにおける吸着量を測定し、単位質量当たりに換算して「有効吸着量」とした。元の金属錯体の有効吸着量に対する成形体中の金属錯体単位質量当たりの有効吸着量の比率を維持率(%)として算出した。金属錯体の種類によって、吸脱着の速度が異なるため、減圧保持時間は金属錯体の種類ごとに変えている。吸脱着速度の速いものは1分、遅いものは10分とした。
ガスの吸着測定が終わった後の成形体について、藤原製作所製、木屋式デジタル硬度計THK-20N型を用いて円柱の側面に荷重をかけ、成形体が破壊した時の値を測定した。5個の成形体を測定してその平均をとり、圧壊強度とした。
3-1.金属錯体(1):[Cu2(pzdc)2(prz)]の合成
ナスフラスコ(500ml)に硝酸銅三水和物(1.23g、5.0mmol、1.0eq.)、ピラジン(4.05g、50.0mmol、10.0eq.)、純水(100ml)を加え混合した。得られた青色透明溶液に、2,3-ピラジンジカルボン酸(0.84g、5.0mmol、1.0eq.)の水溶液(80ml)と1N NaOH水溶液(20ml)の混合液を滴下しながら加えた。混合溶液を室温(25℃)で2時間攪拌した後、得られた青色固体を桐山漏斗(登録商標)でろ過し、純水、メタノールで順に洗浄し、乾燥して、青色粉体(金属錯体(1))を得た(収量:1.32g)。レーザ回折/散乱式粒子径分布測定装置(株式会社堀場製作所製「Partica(登録商標) LA-950V2」)を使用して測定したところ、金属錯体(1)の平均粒子径は23μmであった。なお、上記式中「prz」はピラジンを、「pzdc」は2,3-ピラジンジカルボン酸を意味する。
ナスフラスコ(300ml)に硝酸亜鉛六水和物(1.50g、5.04mmol、1.0eq.)、5-ニトロイソフタル酸(1.07g、5.07mmol、1.0eq.)、1,2-ビス(4-ピリジル)エチレン(0.91g、5.01mmol、1.0eq.)、DMF(100ml)を加え、120℃で16時間加熱した(N2ガス雰囲気下)。得られた白色固体を桐山漏斗(登録商標)でろ過し、DMF、メタノールで順に洗浄した後、乾燥して、白色粉体(金属錯体(2))を得た(収量:2.3g、平均粒子径63μm)。なお、上記式中「NO2-ip」は5-ニトロイソフタル酸を、「bpe」は1,2-ビス(4-ピリジル)エチレンを意味する。
使用した高分子バインダー成分(B)は以下のとおりである。
高分子バインダー1:MMA/MAA-1
メタクリル酸メチルとメタクリル酸の共重合体(95:5(モル比)、polysciences社製)
Tg=116.8℃
官能基:カルボキシル基、0.50mmol/g
高分子バインダー2:MMA/MAA-2
メタクリル酸メチルとメタクリル酸の共重合体(75:25(モル比)、polysciences社製)
Tg=150℃
官能基:カルボキシル基、2.59mmol/g
高分子バインダー3:PMAA
ポリメタクリル酸(polysciences社製)
Tg=228℃
官能基:カルボキシル基、11.62mmol/g
高分子バインダー4:PMMA
ポリメタクリル酸メチル(和光純薬工業株式会社製)
Tg=103.3℃
官能基:なし、0mmol/g
高分子バインダー5:PVAc/OH
ポリ酢酸ビニル88%鹸化品
Tg=67.8℃
官能基:水酸基、17.9mmol/g
高分子バインダー6:PVAc
ポリ酢酸ビニル
Tg=41.9℃
官能基:なし、0mmol/g
滑材(C)としてグラファイト(日本黒鉛工業株式会社製、ACP)を使用した。
成形体における組成が、金属錯体(1)87質量部、高分子バインダー1(MMA/MAA-1)10質量部を、テトラヒドロフラン200質量部を混合して乳鉢で混練し、風乾しながら粉砕し、0.5mmメッシュの篩を通過したものを造粒品として得た。これに滑剤(3)としてグラファイトを、成形体100質量部における組成が3質量部になるように加えてよく混合したものを、室温で打錠成形機を用いて成形体を製造した。得られた成形体を150℃、50Paで6時間以上減圧乾燥し、吸着水などを除去して成形体(1)とした。
金属錯体(1)と成形体(1)について、25℃における1,3-ブタジエンの吸脱着等温線を測定した。結果を図1及び図2に示す。縦軸は、単位質量当たりの対象ガス(1,3-ブタジエン)の吸着量を示す。以下図3~7についても同様である。金属錯体(1)と成形体(1)の、1,3-ブタジエンの有効吸着量は、減圧保持時間を10分間としたときに、それぞれ15.9ml(STP)/gと13.2ml(STP)/gであった。
1,3-ブタジエンの吸着測定が終わった後の成形体(1)について、圧壊強度を測定したところ、108Nであった。本発明の成形体は実用的な強度を有し、吸着材及び分離材として優れていることは明らかである。
表1に示した条件とした以外は実施例1と同様にして成形体を製造し、各種評価試験に供した。結果を表1に示す。また、実施例2の成形体(2)、金属錯体(2)、実施例3の成形体(3)、実施例4の成形体(4)、及び比較例7の成形体(11)の25℃における1,3-ブタジエンの吸脱着等温線を図3~7にそれぞれ示す。
Claims (14)
- 金属イオンと、前記金属イオンと結合可能な有機配位子とから構成される金属錯体(A)と、カルボキシル基、水酸基、アミノ基、メルカプト基、エポキシ基、及びスルホ基からなる群より選択される少なくとも1つの官能基を分子内に合計で0.3mmol/g以上、8.0mmol/g以下含有する高分子バインダー成分(B)とを含むことを特徴とする炭化水素吸着用成形体。
- 前記高分子バインダー成分(B)の官能基が、水酸基又はカルボキシル基である請求項1に記載の炭化水素吸着用成形体。
- 前記高分子バインダー成分(B)がエチレン性炭化水素重合体、ポリエステル、ポリアミド、又はポリエーテルである請求項1又は2のいずれかに記載の炭化水素吸着用成形体。
- 前記高分子バインダー成分(B)が(メタ)アクリル酸と炭素数1~10の(メタ)アクリル酸エステルとの共重合体である請求項1~3のいずれか一項に記載の炭化水素吸着用成形体。
- 前記金属錯体(A)を50質量%~97質量%含有する請求項1~4のいずれか一項に記載の炭化水素吸着用成形体。
- 前記有機配位子が、下記(1)~(3)からなる群より選択される少なくとも1種の有機化合物である請求項1~5のいずれか一項に記載の炭化水素吸着用成形体。
有機配位子(1):カルボキシル基及び/又は水酸基を2つ以上有し、複素環を有さない、金属イオンに二座配位可能な有機化合物
有機配位子(2):カルボキシル基又は水酸基を有し、環内にN、O又はSから選択されるヘテロ原子を1つ有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物
有機配位子(3):1又は複数の環内にN、O及びSからなる群より選択されるヘテロ原子を2以上有する、金属イオンに二座配位可能な飽和又は不飽和の単環式又は多環式の複素環式化合物 - 前記有機配位子(1)が、炭素数4~20のアルキレンジカルボン酸化合物、炭素数4~20のアルケニレンジカルボン酸化合物、下記一般式(I)~(IV)で表されるジカルボン酸化合物、及び下記一般式(V)で表されるヒドロキシカルボン酸化合物からなる群より選択される少なくとも一種である請求項6に記載の炭化水素吸着用成形体。
- 前記有機配位子(3)が、下記一般式(IX)~(XII)で表される化合物からなる群より選択される少なくとも一種である請求項6に記載の炭化水素吸着用成形体。
- 前記金属イオンが、銅又は亜鉛のイオンである請求項1~9のいずれか一項に記載の炭化水素吸着用成形体。
- 吸着対象の前記炭化水素が、炭素数2~5の炭化水素である請求項1~10のいずれか一項に記載の炭化水素吸着用成形体。
- 前記炭素数2~5の炭化水素が、1,3-ブタジエンである請求項11に記載の炭化水素吸着用成形体。
- 打錠成形法により製造されたものである請求項1~12のいずれか一項に記載の炭化水素吸着用成形体。
- 打錠成形で得られた請求項1~13のいずれか一項に記載の成形体を、高分子バインダー成分(B)のガラス転移温度(Tg)以上の温度でアニールすることを特徴とする炭化水素吸着用成形体の製造方法。
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