WO2009001970A1 - 分離膜複合体及び分離膜複合体の製造方法 - Google Patents
分離膜複合体及び分離膜複合体の製造方法 Download PDFInfo
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- WO2009001970A1 WO2009001970A1 PCT/JP2008/062117 JP2008062117W WO2009001970A1 WO 2009001970 A1 WO2009001970 A1 WO 2009001970A1 JP 2008062117 W JP2008062117 W JP 2008062117W WO 2009001970 A1 WO2009001970 A1 WO 2009001970A1
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- WIPO (PCT)
- Prior art keywords
- separation membrane
- porous body
- intermediate layer
- separation
- composite
- Prior art date
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- 238000000926 separation method Methods 0.000 title claims abstract description 150
- 239000012528 membrane Substances 0.000 title claims abstract description 143
- 238000004519 manufacturing process Methods 0.000 title claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 35
- 239000002344 surface layer Substances 0.000 claims abstract description 33
- 239000011148 porous material Substances 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims description 78
- 239000002131 composite material Substances 0.000 claims description 60
- 239000002245 particle Substances 0.000 claims description 41
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000002808 molecular sieve Substances 0.000 claims description 9
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 9
- 239000011164 primary particle Substances 0.000 claims description 8
- 230000004907 flux Effects 0.000 abstract description 18
- 239000011229 interlayer Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 238000005373 pervaporation Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000002243 precursor Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000011163 secondary particle Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- -1 etc. Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/066—Tubular membrane modules with a porous block having membrane coated passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0046—Inorganic membrane manufacture by slurry techniques, e.g. die or slip-casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0067—Inorganic membrane manufacture by carbonisation or pyrolysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/021—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
- B01D71/025—Aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
- B01D71/027—Silicium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/028—Molecular sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
Definitions
- the present invention relates to a separation membrane complex that is a complex having a porous body and a separation membrane formed on the surface of the porous body, and a method for producing the separation membrane complex.
- the separation membrane is made of a polymer resin, if the organic solvent is contained in the mixture that is the separation object, the membrane is easily deteriorated and deteriorated. I had a problem.
- Patent Document 1 a coating layer of silica sol, alumina sol or the like is formed on the surface of a ceramic porous body having a porosity of 30 to 80%, and is closely adhered to the surface.
- Molecular sieves and carbon membranes with many pores with pore diameters of 1 nm or less have been proposed.
- This molecular sieving carbon film can be obtained by applying a liquid thermosetting resin (phenol resin) to form a polymer film and then heat-treating it at 550 to 1100 ° C. in a non-oxidizing atmosphere.
- phenol resin phenol resin
- FIG. 3 is a schematic view showing a cross section of such a molecular sieve carbon membrane (separation membrane complex).
- the molecular sieve carbon film 3 shown in FIG. 3 has a porous body 31 and a carbon film 36 formed on the surface of the porous body 31, and silica sol, alumina sol, etc. on the surface of the porous body 31.
- the sol layer 35 (coating layer) is formed, and the carbon film 36 is in close contact with the sol layer 35.
- Patent Document 1 Japanese Patent No. 3647985 Disclosure of the invention
- Patent Document 1 in the method of impregnating the surface of a porous body (porous base material) with silica and forming a carbon film thereon, the formation of a sol layer Since the pore diameter of the carbon membrane is increased, the molecular weight of CH / CH, etc.
- the present invention has been made in view of the above-described circumstances, and a problem to be solved is a filter in which a separation membrane (for example, a carbon membrane) is formed on a porous body, It is an object of the present invention to provide a means for obtaining a filter having improved permeation flux and selectivity.
- a separation membrane for example, a carbon membrane
- a composite body having a porous body and a separation film formed on the surface of the porous body wherein the porous body includes a base material, An intermediate layer formed on the substrate, and a surface layer formed on the intermediate layer, and a separation membrane is formed directly on the surface layer of the porous body; and Then, a separation membrane composite having an intermediate layer thickness of 10 to 100 ⁇ is provided (the first separation membrane composite).
- a composite body having a porous body and a separation membrane formed on the surface of the porous body, wherein the porous body includes a base material and a base thereof.
- An intermediate layer formed on the material, and a surface layer formed on the intermediate layer, and a separation membrane is formed directly on the surface layer of the porous body.
- a separation membrane composite in which the layer is composed of aggregates having primary particles smaller than the average pore diameter of the substrate is provided (the second separation membrane composite and the
- the separation membrane complex according to the present invention simply refers to both the first separation membrane complex and the second separation membrane complex.
- the thickness of the intermediate layer is more preferably 10 to
- the separation membrane composite according to the present invention “directly” means that there is no other intervening.
- the sol layer is not formed on the porous membrane separation membrane (carbon membrane) formation portion.
- the surface layer is a layer located on the surface of the layers constituting the porous body, and the separation membrane is formed thereon, so it does not constitute the surface as the separation membrane complex.
- Each of the intermediate layer and the surface layer may be a single layer, or each layer may be composed of two or more layers.
- the separation membrane composite according to the present invention is suitably used when the porous body has a monolith shape.
- the separation membrane composite according to the present invention is suitably used when the separation membrane is a molecular sieve carbon membrane.
- a ceramic filter comprising any one of the above-described separation membrane composites and capable of separating water and ethanol.
- any one of the above-described separation membrane composites capable of separating oxygen, nitrogen, gas, mixed gas, and the like at a molecular level.
- a constructed ceramic filter is provided.
- a method for producing a composite body comprising: a porous body; and a separation membrane formed on the surface of the porous body.
- An intermediate layer having a thickness of 10 to 100 ⁇ is formed on the material, and a surface layer is formed on the intermediate layer to obtain a porous body, and on the surface layer of the porous body.
- a method for producing a separation membrane complex having a step of forming a separation membrane is provided (referred to as a method for producing a first separation membrane complex).
- a method for producing a composite body comprising: a porous body; and a separation membrane formed on the surface of the porous body.
- An intermediate layer is formed on the material using particles (secondary particles) having an agglomeration force having primary particles smaller than the average pore diameter of the base material, and a surface layer is formed on the intermediate layer to form a porous body.
- a method for producing a separation membrane composite having a step of forming a separation membrane directly on the surface layer of the body (a method for producing a second separation membrane composite).
- the thickness of the intermediate layer to be formed is preferably 10 ⁇ 50 ⁇ ⁇ .
- the method for producing a separation membrane composite according to the present invention is suitably used when the porous body has a monolith shape.
- the method for producing a separation membrane composite according to the present invention is preferably used when the separation membrane is a molecular sieve carbon membrane.
- the term “aggregate” refers to an aggregate in which a primary particle is aggregated to form a certain shape.
- This aggregate constitutes secondary particles.
- a fine body is a void caused by the remaining internal gas.
- the dense body is a concept that counters the porous body. This dense body constitutes primary particles.
- the separation factor among the indicators of the pervaporation separation performance of the separation membrane complex is the ratio of the permeate side liquid composition ratio to the supply side liquid composition ratio, and is determined by the following formula: Is the separation coefficient ⁇ .
- Perm (water) and Perm (ethanol) are the water concentration permeated through the membrane and the mass concentration of ethanol [mass. / 0]
- Feed (water), Fe ed (ethanol) are each water feed, the mass concentration of ethanol [mass 0/0.
- Separation factor (X (Perm (water) Perm (ethanol)) / (Feed (water) ZFeed (ethanol ))
- the flux (F1 ux, (kgZrrAi)) among the indices of pervaporation separation performance of the separation membrane complex is obtained by the following equation.
- Q is the permeate mass (kg)
- A is the separation membrane area (m 2 )
- t is time (h).
- the average pore diameter ( ⁇ m) in the present specification is a value measured by a mercury intrusion method.
- the average particle diameter ( ⁇ m) is a value of 50% particle diameter measured by an X-ray transmission type particle size distribution measuring apparatus (in the examples described later, cedigraph 5000-02 manufactured by Shimadzu Corporation).
- the separation membrane composite according to the present invention the separation membrane is formed (formed) directly on (on the surface layer) of the porous body, and no Zonole layer is provided. Therefore, unlike the invention disclosed in Patent Document 1, the selectivity does not decrease due to the influence of the sol layer.
- the separation membrane complex according to the present invention has a relatively low molecular weight such as CO 2 / CH, N ⁇ , water EtOH, etc.
- the separation membrane composite according to the present invention is not provided with a sol layer, there is no increase in pressure loss due to the sol layer, and there is no decrease in flux.
- the thickness of the intermediate layer is as thin as 10 to: LOO / xm. Therefore, the separation membrane composite according to the present invention can obtain a high flux with a small total pressure loss.
- the intermediate layer is composed of aggregates, so that the pressure loss can be kept low.
- the permeability of the permeated gas is improved, so that the second separation membrane composite according to the present invention has a high separation coefficient and flux.
- water-ethanol pervaporation separation is performed under the condition that the ratio of water ethanol (EtOH) is 10Z90 mass% and the temperature of the supply liquid is 75 ° C. Evaluation by the method makes it possible to obtain a (ceramic) filter with a separation factor ⁇ of 100 or more and a flux of 1 kgZm 2 h or more.
- the method for producing a separation membrane composite according to the present invention exhibits an excellent effect where the separation membrane composite according to the present invention can be obtained.
- FIG. 1 is a view showing one embodiment of a separation membrane composite according to the present invention, and is a schematic view showing an enlarged part of a cross section of an inner wall surface of a cell.
- FIG. 2 is a view showing another embodiment of the separation membrane composite according to the present invention, and is a schematic view showing an enlarged part of the cross section of the inner wall surface of the cell.
- FIG. 3 is a view showing an example of a separation membrane composite having a conventional sol layer, and is a schematic view showing an enlarged part of the cross section of the inner wall surface of the cell.
- FIG. 4 is a photograph showing a cross section of a porous body in Example 2.
- FIG. 5 is a photograph showing a cross section of a porous body in Comparative Example 1.
- FIG. 6 is a view showing one embodiment of the separation membrane composite according to the present invention, and is a perspective view showing the whole.
- FIG. 1 and 6 are diagrams showing an embodiment of the separation membrane complex according to the present invention.
- FIG. 6 is a perspective view showing the whole
- FIG. 1 is an enlarged schematic view showing a part of the cross section of the inner wall surface of the cell.
- the separation membrane composite 1 shown in Figs. 1 and 6 has a cylindrical outer shape as a whole (see Fig. 6), and a plurality of fluid passages in the axial direction (of the cylinder). It has a monolithic shape (like a lotus root) with cells 13.
- the senore 13 defined by the partition wall 12 which is the porous body 61 has a circular cross section perpendicular to the axial direction (for example), and a carbon film 66 is formed on the inner wall surface of the cell 13 (FIG. 1). See).
- the inner wall surface is a surface of the partition wall 12 which is a substantial part forming the cell 13 which is a space.
- the separation membrane complex 1 includes a porous body 61 (partition wall 12) and a carbon membrane 66 that is a separation membrane formed on the surface of the porous body 61 (partition wall 12). And a complex having.
- the porous body 61 further comprises, from the inside, a base material 62 having an average particle diameter of 10 to 100 m and an average pore diameter of 1 to 30 ⁇ m, and an aggregate having primary particles smaller than the average pore diameter of the base material.
- An intermediate layer 63 having a thickness of 10 to 100 jum and an average pore diameter of 0.;! To 3 ⁇ , and a thickness of 1 to: 100 ⁇ and an average pore diameter of 0.01 to 0.0 ⁇ And layer 64.
- a carbon membrane 66 as a separation membrane is formed directly on the surface layer 64 (surface) without forming a sol layer. Made.
- FIG. 2 is a view showing another embodiment of the separation membrane composite according to the present invention, and is a schematic view showing an enlarged part of the cross section of the inner wall surface of the cell, as in FIG.
- the separation S-complex 2 shown in FIG. 2 is different from the separation membrane composite 1 shown in FIG. 1 in that the intermediate layer constituting the porous body 51 is the intermediate layer 53 constituted by a dense body. ing. Others are the same as those of the separation membrane complex 1, and the explanation is omitted.
- the production method of the separation membrane composite according to the present invention will be described by taking as an example the case of producing the separation membrane composite 1 described above.
- the base material 62 constituting the porous body 61 is obtained, and this can be performed by a known means.
- the film thickness after firing in the time of film formation is 10 to 500 ⁇ m (in the case of dense bodies).
- the porous body 61 is obtained.
- the location of the surface of the substrate 62 on which the intermediate layer 63 and the surface layer 64 are to be formed is the inner wall surface of the cell 13. .
- the porous material (ceramic particle material) of the substrate 62 for example, alumina is used because it has a small change in pore diameter due to corrosion resistance and a change in temperature and a sufficient strength can be obtained.
- alumina is used because it has a small change in pore diameter due to corrosion resistance and a change in temperature and a sufficient strength can be obtained.
- cordierite, mullite, silicon carbide, titania, etc. can be used.
- the porous material (ceramic particle material) of the intermediate layer 63 and the surface layer 64 the same material as the substrate 62 can be used.
- the alumina particles forming the intermediate layer 63 have a mean particle diameter smaller than the alumina particles (for example) forming the base material 62 having an average particle diameter of 10 to 100 m, for example an average particle diameter of 0.3.
- ⁇ Particles of LO / xm are used.
- the alumina particles that form the surface layer 64 for example) the aluminum particles that form the intermediate layer 63 (for example)
- a particle having an average particle size smaller than that of the nanoparticle for example, a particle having an average particle size of 0.03 to 1 nm is used.
- Each porous material has a predetermined ratio of aggregate particles made of alumina particles having a desired average particle diameter, sintering aid made of glass frit powder, etc., and a binder in a solvent such as water. It is used as a slurry obtained by mixing in The ratio of the binder content to the inorganic content of the slurry is preferably 2 to 10% by mass.
- a carbon membrane 66 (separation membrane) is formed on the surface of the obtained porous body 61 (surface of the surface layer 64).
- the location of the surface of the porous body 61 on which the carbon film 66 is to be formed is the inner wall surface of the cell 13 on which the intermediate layer 63 and the surface layer 64 are formed, and the surface of the partition wall 12.
- the carbon film 66 is formed on the surface of the porous body 61 by bringing a precursor solution to be the carbon film 66 into contact with the surface of the porous body 61 later. Film formation (precursor solution deposition and drying) may be performed one or more times or in multiple steps.
- carbonization at approximately 500 to 900 ° C, preferably around 700 ° C under a nitrogen atmosphere. Carbonization may be performed in a vacuum state or in a reducing atmosphere such as argon or helium in addition to the nitrogen atmosphere. If carbonization is performed at a temperature lower than 500 ° C, the carbonization becomes insufficient and the selectivity as a molecular sieve membrane and the permeation rate may be reduced. On the other hand, when carbonization is performed at a temperature exceeding 900 ° C, the permeation rate may decrease due to shrinkage of the pore diameter.
- the precursor solution that becomes the carbon film 66 is a thermosetting resin such as funool resin, melamine resin, urea resin, furan resin, polyimide resin, epoxy resin, thermoplastic resin such as polyethylene, or cellulose resin, or the like.
- thermosetting resin such as funool resin, melamine resin, urea resin, furan resin, polyimide resin, epoxy resin, thermoplastic resin such as polyethylene, or cellulose resin, or the like.
- organic solvents such as methanol, acetone, THF, NMP, and toluene, and water.
- Example 1 After molding by extrusion molding and firing, an average particle size of 10 to: ⁇ ⁇ ⁇ , A monolith-shaped substrate having an average pore diameter of 1 to 30 ⁇ was prepared. Next, on the inner wall surface of the cell in the obtained base material, alumina particles (secondary particles) having an average particle diameter of 0.3 to 10 ⁇ m, which is an aggregate force with a primary particle diameter of 0.01 to 1 / im. ) Is deposited by a filtration film-forming method while adjusting the film thickness according to the film-forming time, and then fired to form an intermediate layer having a thickness of 10 ⁇ and an average pore diameter of 0.1 to 3 ⁇ Formed.
- alumina particles secondary particles having an average particle diameter of 0.3 to 10 ⁇ m, which is an aggregate force with a primary particle diameter of 0.01 to 1 / im.
- alumina particles having an average particle size of 0.03 ⁇ 1 ⁇ m are further deposited on the intermediate layer by a filtration film-forming method while adjusting the film thickness according to the film-forming time, and then fired. Then, a surface layer having a thickness of 10 im and an average pore diameter of 0.01-0.5 ⁇ was formed to obtain a porous body.
- a carbon film precursor solution was used to form a film by repeating the deposition and drying three times on the inner wall surface of the cell in the porous body by an immersion method, and then 700 ° under nitrogen atmosphere. Carbonized with C, a carbon membrane was further formed on the surface layer to obtain a separation membrane composite.
- the obtained separation membrane complex was evaluated by a water-ethanol permeation vapor separation method.
- the test conditions were a water-ethanol (EtOH) ratio of 10Z90% by mass and a feed liquid temperature of 75 ° C.
- Table 1 shows the particle morphology (aggregate or fine) of the intermediate layer, the thickness of the intermediate layer, pervaporation separation performance (separation coefficient, flux), and pressure loss.
- Example 2 A separation membrane composite was prepared in the same manner as in Example 1 except that the thickness of the intermediate layer was 100 ⁇ m. Evaluation was made by the pervaporation separation method. Table 1 shows the particle morphology (aggregate or dense) of the intermediate layer, the thickness of the intermediate layer, pervaporation separation performance (separation coefficient, flux), and pressure loss. Fig. 4 shows a photograph of the cross section of the porous body after the carbon film is formed. In Example 2, two porous bodies were prepared under the same conditions, and FIG. 4 is a photograph of one cut using one of them.
- Example 3 Separation was carried out in the same manner as in Example 1 except that dense alumina particles were used in the formation of the intermediate layer, and that the thickness of the intermediate layer was 50 ⁇ .
- Membrane composites were prepared and evaluated by the water-ethanol permeation vapor separation method under the same conditions as in Example 1. Table 1 shows the particle morphology (aggregate or dense) of the intermediate layer, the thickness of the intermediate layer, pervaporation separation performance (separation coefficient, flux), and pressure loss.
- Example 4 A separation membrane composite was prepared in the same manner as in Example 1, except that the thickness of the intermediate layer was 500 ⁇ . Evaluation by pervaporation separation method I was worth it. Table 1 shows the particle morphology (aggregate or dense) of the intermediate layer, the thickness of the intermediate layer, pervaporation separation performance (separation coefficient, flux), and pressure loss.
- Example 1 A separation membrane composite was prepared in the same manner as in Example 1, except that alumina particles having a dense body force were used in forming the intermediate layer and that the thickness of the intermediate layer was 500. A body was prepared and evaluated under the same conditions as in Example 1 by the water-ethanol pervaporation method. Table 1 shows the particle morphology (aggregate or dense) of the intermediate layer, the thickness of the intermediate layer, pervaporation separation performance (separation coefficient, flux), and pressure loss.
- Fig. 5 shows a photograph of the cross section of the porous material after the carbon film is formed. In Comparative Example 1, two porous bodies were produced under the same conditions, and FIG. 5 is a photograph of a cut using one of them.
- Example 1 From the results of Example 1 and Example 2, when alumina particles made of aggregates were used in forming the intermediate layer, the separation factor ⁇ and flux (pressure loss) were reduced by reducing the thickness. It can be seen that both can be improved. This is presumably because the permeability of the permeated gas was improved by reducing the thickness of the intermediate layer.
- the separation membrane complex according to the present invention comprises a specific substance (gas) from a mixture of a plurality of substances (gas, etc.). Can be widely used for filter applications, etc.
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Abstract
Description
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EP08777855.1A EP2161073B1 (en) | 2007-06-27 | 2008-06-27 | Inorganic separation membrane complex, and production thereof |
JP2009520664A JPWO2009001970A1 (ja) | 2007-06-27 | 2008-06-27 | 分離膜複合体及び分離膜複合体の製造方法 |
CA2689499A CA2689499C (en) | 2007-06-27 | 2008-06-27 | Separation membrane complex, and method for manufacturing the separation membrane complex |
CN2008800217209A CN101687149B (zh) | 2007-06-27 | 2008-06-27 | 分离膜复合体和分离膜复合体的制造方法 |
US12/629,409 US7971729B2 (en) | 2007-06-27 | 2009-12-02 | Separation membrane complex, and method for manufacturing the separation membrane complex |
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Cited By (6)
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JP2011201753A (ja) * | 2010-03-26 | 2011-10-13 | Ngk Insulators Ltd | 炭素膜の製造方法 |
WO2013146956A1 (ja) * | 2012-03-30 | 2013-10-03 | 日本碍子株式会社 | ハニカム形状セラミック多孔質体、その製造方法、及びハニカム形状セラミック分離膜構造体 |
US8668094B2 (en) | 2010-03-31 | 2014-03-11 | Ngk Insulators, Ltd. | Carbon membrane structure and method for producing same |
CN104168989A (zh) * | 2012-03-16 | 2014-11-26 | 日本碍子株式会社 | 分离膜的制造方法、分离膜复合体的制造方法以及分离膜复合体 |
JPWO2013147272A1 (ja) * | 2012-03-30 | 2015-12-14 | 日本碍子株式会社 | ハニカム形状セラミック多孔質体、その製造方法、及びハニカム形状セラミック分離膜構造体 |
JPWO2017169304A1 (ja) * | 2016-03-31 | 2019-02-07 | 日本碍子株式会社 | モノリス型分離膜構造体 |
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JP5553640B2 (ja) * | 2010-02-23 | 2014-07-16 | 本田技研工業株式会社 | 内燃機関システム |
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Also Published As
Publication number | Publication date |
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EP2161073A4 (en) | 2011-05-04 |
CN101687149A (zh) | 2010-03-31 |
CA2689499A1 (en) | 2008-12-31 |
US20100072127A1 (en) | 2010-03-25 |
US7971729B2 (en) | 2011-07-05 |
EP2161073A1 (en) | 2010-03-10 |
EP2161073B1 (en) | 2019-03-06 |
CA2689499C (en) | 2014-05-20 |
CN101687149B (zh) | 2012-09-05 |
JPWO2009001970A1 (ja) | 2010-08-26 |
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