JP2005349378A - ハニカム構造体 - Google Patents
ハニカム構造体 Download PDFInfo
- Publication number
- JP2005349378A JP2005349378A JP2004214729A JP2004214729A JP2005349378A JP 2005349378 A JP2005349378 A JP 2005349378A JP 2004214729 A JP2004214729 A JP 2004214729A JP 2004214729 A JP2004214729 A JP 2004214729A JP 2005349378 A JP2005349378 A JP 2005349378A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb structure
- honeycomb
- inorganic material
- inorganic
- porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000002245 particle Substances 0.000 claims abstract description 94
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 77
- 239000011147 inorganic material Substances 0.000 claims abstract description 77
- 239000003054 catalyst Substances 0.000 claims abstract description 58
- 239000000919 ceramic Substances 0.000 claims abstract description 53
- 239000003566 sealing material Substances 0.000 claims abstract description 51
- 239000011230 binding agent Substances 0.000 claims abstract description 46
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 38
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 3
- 150000001341 alkaline earth metal compounds Chemical class 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 2
- 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 claims description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052863 mullite Inorganic materials 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 239000012779 reinforcing material Substances 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000010970 precious metal Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 27
- 230000008646 thermal stress Effects 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 52
- 239000000835 fiber Substances 0.000 description 31
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 238000005259 measurement Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 9
- 239000013585 weight reducing agent Substances 0.000 description 9
- 238000010304 firing Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 239000004927 clay Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 229910000510 noble metal Inorganic materials 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- -1 For example Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 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 3
- 238000001035 drying Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/247—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2455—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the whole honeycomb or segments
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2459—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2474—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the walls along the length of the honeycomb
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2478—Structures comprising honeycomb segments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
- B01D46/2488—Triangular
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- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
- B01D46/2492—Hexagonal
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
【解決手段】 本発明のハニカム構造体10は、複数の貫通孔を有し第1の形態の無機材料(例えばセラミック粒子)、第2の形態の無機材料(例えば無機繊維や粒径の大きなセラミック粒子)と無機バインダとを含む多孔質ハニカムユニット11がシール材層14を介して貫通孔が開口していない外面13で接合した構造をとる。多孔質ハニカムユニット11の貫通孔に対して直交する面の断面積は、5〜50cm2である。また、ハニカム構造体10の断面積に対する多孔質ハニカムユニット11の総断面積の占める割合が85%以上である。このハニカム構造体10によれば、シール材層14によってそれぞれの多孔質ハニカムユニット11にかかる熱応力や振動を緩衝可能であり、触媒成分を分散させる表面をより有効に活用可能である。
【選択図】 図1
Description
複数の貫通孔を有し少なくとも第1の形態の無機材料と第2の形態の無機材料とを含み該貫通孔に対し直交する面の断面積が5〜50cm2である多孔質ハニカムユニットと、
二以上の前記多孔質ハニカムユニットを前記貫通孔が開口していない外面で接合するシール材層と、
を備えたものである。
複数の貫通孔を有し少なくとも第1の形態の無機材料と第2の形態の無機材料とを含み該貫通孔に対し直交する面の断面積が50cm2以下である多孔質ハニカムユニットと、
二以上の前記多孔質ハニカムユニットを前記貫通孔が開口していない外面で接合するシール材層と、
を備え、
ハニカム構造体の断面積に対する前記多孔質ハニカムユニットの総断面積の占める割合が85%以上であるものである。
まず、γアルミナ粒子(平均粒径2μm,)40重量%、シリカ−アルミナ繊維(平均繊維径10μm、平均繊維長100μm、アスペクト比10)10重量%、シリカゾル(固体濃度30重量%)50重量%を混合し、得られた混合物100重量部に対して有機バインダとしてメチルセルロース6重量部、可塑剤及び潤滑剤を少量加えて更に混合・混練して混合組成物を得た。次に、この混合組成物を押出成形機により押出成形を行い、生の成形体を得た。
図4の表に示す形状となるように多孔質セラミックユニットを設計したほかは実験例1と同様にしてハニカム構造体10を作製した。実験例2,3,4の接合体の形状をそれぞれ図7(b),(c),(d)に示し、実験例5,6,7の接合体の形状をそれぞれ図8(a),(b),(c)に示す。実験例7は、ハニカム構造体10を一体成形したものであるため、接合工程及び切断工程は行わなかった。
第1の形態の無機材料のセラミック粒子をチタニア粒子(平均粒径2μm)とし、図4の表に示す形状となるように多孔質セラミックユニットを設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層のセラミック粒子をチタニア粒子(平均粒径2μm)としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例8〜11の接合体の形状はそれぞれ図7(a)〜(d)のものと同様であり、実験例12〜14の接合体の形状は、それぞれ図8(a)〜(c)のものと同様である。また、実験例14は、ハニカム構造体10を一体成形したものである。
第1の形態の無機材料のセラミック粒子をシリカ粒子(平均粒径2μm)とし、図4の表に示す形状となるように多孔質セラミックユニットを設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層のセラミック粒子をシリカ粒子(平均粒径2μm)としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例15〜18の接合体の形状はそれぞれ図7(a)〜(d)のものと同様であり、実験例19〜21の接合体の形状は、それぞれ図8(a)〜(c)のものと同様である。また、実験例21は、ハニカム構造体10を一体成形したものである。
第1の形態の無機材料のセラミック粒子をジルコニア粒子(平均粒径2μm)とし、図4の表に示す形状となるように多孔質セラミックユニットを設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層のセラミック粒子をジルコニア粒子(平均粒径2μm)としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例22〜25の接合体の形状はそれぞれ図7(a)〜(d)のものと同様であり、実験例26〜28の接合体の形状は、それぞれ図8(a)〜(c)のものと同様である。また、実験例28は、ハニカム構造体10を一体成形したものである。
貫通孔内部に触媒担持層であるアルミナを形成させている、市販の円柱状(直径143.8mmφ×高さ150mm)のコージェライトハニカム構造体10を実験例29とした。なお、セル形状は六角形であり、セル密度は、62個/cm2(400cpsi)、壁厚は0.18mmであった。なお、正面から見たハニカム構造体の形状は、図8(c)のものと同様である。
第2の形態の無機材料として図5の表に示す形状のシリカ−アルミナ繊維を用いて多孔質セラミックユニットを設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層のシリカ−アルミナ繊維を多孔質セラミックユニットと同じシリカ−アルミナ繊維としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例30〜34の接合体の形状は、図7(a)のものと同様である。
図5の表に示すように、第1及び第2の形態の無機材料のセラミック粒子をすべてγアルミナ(平均粒径2μm)として設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層の第1及び第2の形態の無機材料のセラミック粒子をすべてγアルミナ(平均粒径2μm)としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例35の接合体の形状は、図7(a)のものと同様である。
第2の形態の無機材料として図5の表に示すαアルミナ粒子を用いて多孔質セラミックユニットを設計したほかは実験例1と同様にして多孔質ハニカムユニット11を作製し、続いてシール材層とコーティング材層の第2の形態の無機材料を多孔質セラミックユニットと同じαアルミナ粒子としたほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例36〜43の接合体の形状は、図7(a)のものと同様である。
図6の表に示すように、多孔質セラミックユニットの断面積及び多孔質セラミックユニットを接合させるシール材層の厚さを変更したほかは実験例1と同様にしてハニカム構造体10を作製した。なお、実験例44〜45の接合体の形状は、図7(a)のものと同様であり、実験例46〜47の接合体の形状は、図7(c)のものと同様である。
図6の表に示すように、無機バインダをアルミナゾル(固体濃度30重量%)として多孔質セラミックユニットを設計したほかは実験例1と同様にしてハニカム構造体10を作製した。
図6の表に示すように、無機バインダをセピオライト及びアタパルジャイトとして多孔質セラミックユニットを設計したほかは実験例1と同様にしてハニカム構造体10を作製した。具体的には、γアルミナ粒子(平均粒径2μm,)40重量%、シリカ−アルミナ繊維(平均繊維径10μm、平均繊維長100μm、アスペクト比10)10重量%、無機バインダ15重量%及び水35重量%を混合し、実験例1と同様に有機バインダ、可塑剤及び潤滑剤を加えて成形・焼成を行い、多孔質ハニカムユニット11を得た。次に、実験例1と同様のシール材ペーストによりこの多孔質ハニカムユニット11を複数接合し、実験例1と同様にこの接合体を切断し、コーティング材層16を形成させ、円柱状(直径143.8mmφ×高さ150mm)のハニカム構造体10を得た。
図6の表に示すように、無機バインダを混合せずに多孔質セラミックユニットを設計したほかは実験例1と同様にしてハニカム構造体10を作製した。具体的には、γアルミナ粒子(平均粒径2μm,)50重量%、シリカ−アルミナ繊維(平均繊維径10μm、平均繊維長100μm、アスペクト比10)15重量%及び水35重量%を混合し、実験例1と同様に有機バインダ、可塑剤及び潤滑剤を加えて成形し、この成形体を1000℃で焼成し、多孔質ハニカムユニット11を得た。次に、実験例1と同様のシール材ペーストによりこの多孔質ハニカムユニット11を複数接合し、実験例1と同様にこの接合体を切断し、コーティング材層16を形成させ、円柱状(直径143.8mmφ×高さ150mm)のハニカム構造体10を得た。
実験例1〜51の多孔質ハニカムユニット11の比表面積測定を行った。まず多孔質ハニカムユニット11及びシール材の体積を実測し、ハニカム構造体の体積に対しユニットの材料が占める割合A(体積%)を計算した。次に多孔質ハニカムユニット11の単位重量あたりのBET比表面積B(m2/g)を測定した。BET比表面積は、BET測定装置(島津製作所製MicromeriticsフローソーブII−2300)を用いて、日本工業規格で定められるJIS−R−1626(1996)に準じて1点法により測定した。測定には、円柱形状の小片(直径15mmφ×高さ15mm)に切り出したサンプルを用いた。そして、多孔質ハニカムユニット11の見かけ密度C(g/L)を多孔質ハニカムユニット11の重量と外形の体積から計算し、ハニカム構造体の比表面積S(m2/L)を、次式(1)から求めた。なお、ここでのハニカム構造体の比表面積は、ハニカム構造体の見かけ体積あたりの比表面積のことをいう。
S(m2/L)=(A/100)×B×C;式(1)
実験例1〜51のハニカム構造体の熱衝撃・振動繰返し試験を行った。熱衝撃試験は、アルミナ繊維からなる断熱材のアルミナマット(三菱化学製マフテック、46.5cm×15cm厚さ6mm)をハニカム構造体の外周面に巻き金属ケーシング21に入れた状態で600℃に設定された焼成炉に投入し、10分間加熱し、焼成炉から取り出し室温まで急冷した。次に、ハニカム構造体をこの金属ケーシングに入れたまま振動試験を行った。図9(a)に振動試験に用いた振動装置20の正面図を、図9(b)に振動装置20の側面図を示す。ハニカム構造体を入れた金属ケーシング21を台座22の上に置き、略U字状の固定具23をネジ24によって締めて金属ケーシング21を固定した。すると、金属ケーシング21は、台座22と固定具23と一体となった状態で振動可能となる。振動試験は、周波数160Hz、加速度30G、振幅0.58mm、保持時間10hr、室温、振動方向Z軸方向(上下)の条件で行った。この熱衝撃試験と振動試験とを交互にそれぞれ10回繰り返し、試験前のハニカム構造体の重量T0と試験後の重量Tiを測定し、次式(2)を用いて重量減少率Gを求めた。
G(重量%)=100×(T0−Ti)/T0;式(2)
実験例1〜51のハニカム構造体の圧力損失測定を行った。圧力損失測定装置40を図10に示す。測定方法は、2Lのコモンレール式ディーゼルエンジンの排気管にアルミナマットを巻いたハニカム構造体を金属ケーシングにいれて配置し、ハニカム構造体の前後に圧力計を取り付けた。なお、測定条件は、エンジン回転数を1500rpm、トルク50Nmに設定し、運転開始から5分後の差圧を測定した。
実験例1〜29及び実験例44〜47のセラミック粒子成分、ユニット断面積、ユニット面積割合、多孔質ハニカムユニットの比表面積、ハニカム構造体の比表面積S、熱衝撃・振動繰返し試験の重量減少率G及び圧力損失の各数値等をまとめたものを図11の表に示し、多孔質ハニカムユニットの断面積を横軸とし熱衝撃・振動繰返し試験の重量減少率G及び圧力損失を縦軸としてプロットしたものを図12に示し、ユニット面積割合を横軸とし熱衝撃・振動繰返し試験の重量減少率G及び圧力損失を縦軸としてプロットしたものを図13に示す。図11及び図12に示した実験例1〜29及び実験例44〜47の測定結果から明らかなように、セラミック粒子、無機繊維及び無機バインダを主成分とし、多孔質ハニカムユニット11の断面積を5〜50cm2の範囲とすれば、ハニカム構造体の単位体積あたりの比表面積が大きくなり、熱衝撃・振動に対する十分な強度が得られることがわかった。また、図13に示すように、セラミック粒子、無機繊維及び無機バインダを主成分とし、多孔質ハニカムユニット11の断面積を50cm2以下の範囲とし、ユニット面積割合を85%以上とすれば、ハニカムユニットの比表面積に対して、ハニカム構造体の単位体積あたりの比表面積を大きくすることができ、熱衝撃・振動に対する十分な強度が得られ、圧力損失が下がることがわかった。特にユニット面積割合が90%以上で圧力損失の低下が顕著であった。
実験例1〜43のハニカム構造体10を硝酸白金溶液に含浸させ、ハニカム構造体10の単位体積あたりの白金重量が2g/Lとなるように調節して触媒成分を担持し、600℃で1hr保持し、ハニカム触媒を得た。
Claims (18)
- 複数の貫通孔を有し少なくとも第1の形態の無機材料と第2の形態の無機材料とを含み該貫通孔に対し直交する面の断面積が5〜50cm2である多孔質ハニカムユニットと、
二以上の前記多孔質ハニカムユニットを前記貫通孔が開口していない外面で接合するシール材層と、
を備えたハニカム構造体。 - 複数の貫通孔を有し少なくとも第1の形態の無機材料と第2の形態の無機材料とを含み該貫通孔に対し直交する面の断面積が50cm2以下である多孔質ハニカムユニットと、
二以上の前記多孔質ハニカムユニットを前記貫通孔が開口していない外面で接合するシール材層と、
を備え、
ハニカム構造体の断面積に対する前記多孔質ハニカムユニットの総断面積の占める割合が85%以上である、
ハニカム構造体。 - 前記ハニカム構造体の断面積に対する前記多孔質ハニカムユニットの総断面積の占める割合が85%以上である、
請求項1に記載のハニカム構造体。 - 前記ハニカム構造体の断面積に対する前記多孔質ハニカムユニットの総断面積の占める割合が90%以上である、請求項1又は2に記載のハニカム構造体。
- 請求項1〜4のいずれかに記載のハニカム構造体であって、
前記シール材層で接合された二以上の多孔質ハニカムユニットのうち前記貫通孔が開口していない外周面を覆うコーティング材層、
を備えたハニカム構造体。 - 前記第2の形態の無機材料は、前記多孔質ハニカムユニットの補強材としての機能を有する、請求項1〜5のいずれかに記載のハニカム構造体。
- 前記第1の形態の無機材料は、所定のアスペクト比をもつ無機材料であり、
前記第2の形態の無機材料は、前記所定のアスペクト比よりも大きなアスペクト比をもつ無機材料である、請求項1〜6のいずれかに記載のハニカム構造体。 - 前記第2の形態の無機材料のアスペクト比は、2〜1000である、請求項7に記載のハニカム構造体。
- 前記第1の形態の無機材料は、セラミック粒子であり、
前記第2の形態の無機材料は、無機繊維である、請求項1〜8のいずれかに記載のハニカム構造体。 - 前記第1の形態の無機材料は、所定の粒径をもつセラミック粒子であり、
前記第2の形態の無機材料は、前記所定の粒径よりも大きな粒径をもつセラミック粒子である、請求項1〜6のいずれかに記載のハニカム構造体。 - 前記第2の形態の無機材料は、前記所定の粒径の5倍以上の粒径をもつ、請求項10に記載のハニカム構造体。
- 前記セラミック粒子は、アルミナ、シリカ、ジルコニア、チタニア、セリア及びムライトからなる群から選ばれた1種又は2種以上の粒子である、請求項9〜11のいずれかに記載のハニカム構造体。
- 前記無機繊維は、アルミナ、シリカ、炭化ケイ素、シリカアルミナ、ガラス及びチタン酸カリウムからなる群から選ばれた1種又は2種以上の無機繊維である、請求項9に記載のハニカム構造体。
- 前記多孔質ハニカムユニットは、更に無機バインダを含んでなり、
前記無機バインダは、アルミナゾル、シリカゾル、チタニアゾル、水ガラス、セピオライト及びアタパルジャイトからなる群から選ばれた1種又は2種以上の無機バインダである、請求項1〜13のいずれかに記載のハニカム構造体。 - 触媒成分が担持されてなる、請求項1〜14のいずれかに記載のハニカム構造体。
- 前記触媒成分は、貴金属、アルカリ金属化合物、アルカリ土類金属化合物及び酸化物から選ばれた1種又は2種以上の成分を含む、請求項15に記載のハニカム構造体。
- 車両の排ガス浄化に用いることを特徴とする、請求項1〜16のいずれかに記載のハニカム構造体。
- 前記貫通孔の断面が略三角形又は略六角形である、請求項1〜17のいずれかに記載のハニカム構造体。
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WO2007000847A1 (ja) * | 2005-06-29 | 2007-01-04 | Ibiden Co., Ltd. | ハニカム構造体 |
JP2007117792A (ja) * | 2005-10-25 | 2007-05-17 | Ngk Insulators Ltd | ハニカム構造体 |
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- 2004-12-10 WO PCT/JP2004/018866 patent/WO2005063653A1/ja active IP Right Grant
- 2004-12-10 EP EP04807224.3A patent/EP1717218B1/en not_active Not-in-force
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US7794815B2 (en) | 2005-06-29 | 2010-09-14 | Ibiden Co., Ltd. | Honeycomb structure |
WO2007000847A1 (ja) * | 2005-06-29 | 2007-01-04 | Ibiden Co., Ltd. | ハニカム構造体 |
JP5042827B2 (ja) * | 2005-06-29 | 2012-10-03 | イビデン株式会社 | ハニカム構造体 |
JP2007117792A (ja) * | 2005-10-25 | 2007-05-17 | Ngk Insulators Ltd | ハニカム構造体 |
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Also Published As
Publication number | Publication date |
---|---|
EP1717218A1 (en) | 2006-11-02 |
WO2005063653A9 (ja) | 2006-02-23 |
KR20060024330A (ko) | 2006-03-16 |
EP1717218A4 (en) | 2008-10-15 |
EP1717218B1 (en) | 2015-04-15 |
JP4815108B2 (ja) | 2011-11-16 |
WO2005063653A1 (ja) | 2005-07-14 |
US20050266992A1 (en) | 2005-12-01 |
KR100672259B1 (ko) | 2007-01-24 |
US7811650B2 (en) | 2010-10-12 |
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