JP2005224666A - フィルタ触媒およびその触媒層の解析方法 - Google Patents
フィルタ触媒およびその触媒層の解析方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 23
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- 239000011148 porous material Substances 0.000 claims description 23
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- 238000000576 coating method Methods 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 4
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- 239000002002 slurry Substances 0.000 description 70
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 22
- 239000002245 particle Substances 0.000 description 16
- 239000000843 powder Substances 0.000 description 16
- 238000010304 firing Methods 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 210000004027 cell Anatomy 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
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- 229910002651 NO3 Inorganic materials 0.000 description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
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- 239000013618 particulate matter Substances 0.000 description 2
- 238000007581 slurry coating method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 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
- 238000007598 dipping method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
- B01J37/0242—Coating followed by impregnation
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Oil, Petroleum & Natural Gas (AREA)
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- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Image Analysis (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
【解決手段】 本発明のフィルタ触媒は、触媒担体基材と、触媒層と、を有するフィルタ触媒において、フィルタ触媒の断面のSEM写真を撮影し、SEM写真に画像処理を施した処理画像において、触媒層の外周を形成するピクセル数と、触媒層を形成するピクセル数との比が0.5以上であることを特徴とする。本発明の解析方法は、フィルタ触媒の断面に画像処理を施して触媒層の外周を形成するピクセル数と、触媒層を形成するピクセル数との比を求める。本発明のフィルタ触媒は、十分なパティキュレートが堆積したときの圧損の上昇を抑えることができる効果を有する。また、本発明の解析方法は、フィルタ触媒の触媒層の均一性を解析できる。
【選択図】 なし
Description
本発明のフィルタ触媒は、触媒担体基材と、触媒層と、を有する。
本発明のフィルタ触媒の触媒層の解析方法は、連続した細孔を有する耐熱性多孔質体よりなる触媒担体基材と、触媒担体基材の表面上に形成されたパティキュレートを燃焼する触媒層と、を有するフィルタ触媒の触媒層の状態を解析するフィルタ触媒の触媒層の解析方法である。そして、フィルタ触媒の断面のSEM写真を電子データ化し、電子データ化された画像において触媒層の外周を形成するピクセル数と、触媒層を形成するピクセル数との比からコート状態を解析する。
まず、アルミナ(Al2O3)粉末750g、チタニア(TiO2)粉末750g、水2000gを秤量し、両粉末よりなる混合粉末を水に投入、攪拌して分散させ、湿式ミリングを施してスラリーを調製した。混合粉末全体を100wt%としたときに、1μm以下の粒径の粒子が77%となっていた。
スラリーの酸化物をチタニアのみで150gとした以外は、実施例1と同様にして本実施例のフィルタ触媒を製造した。
スラリーの酸化物をアルミナのみで1500gとした以外は、実施例1と同様にして本実施例のフィルタ触媒を製造した。
アルミナ粉末750g、チタニア粉末750g、水2000gを秤量し、両粉末よりなる混合粉末を水に投入、攪拌して分散させ、湿式ミリングを施してスラリーを調製した。混合粉末全体を100wt%としたときに、1μm以下の粒径の粒子が94%となっていた。
アルミナ粉末750g、チタニア粉末750g、水2000gを秤量し、両粉末よりなる混合粉末を水に投入、攪拌して分散させ、湿式ミリングを施してスラリーを調製した。混合粉末全体を100wt%としたときに、1μm以下の粒径の粒子が77%となっていた。
まず、実施例および比較例のフィルタ触媒を軸方向に切断し、セル壁の断面のSEM写真(100倍)を撮影した。このSEM写真においては、100μmが1cmに拡大されている。
実施例および比較例のフィルタ触媒の圧損を測定した。
2…封止されたセル
3…開口したセル
Claims (4)
- 連続した細孔を有する耐熱性多孔質体よりなる触媒担体基材と、該触媒担体基材の表面上に形成されたパティキュレートを燃焼する触媒層と、を有するフィルタ触媒において、
該フィルタ触媒の断面のSEM写真を電子データ化し、電子データ化された画像において該触媒層の外周を形成するピクセル数と、該触媒層を形成するピクセル数との比が0.5以上であることを特徴とするフィルタ触媒。 - 電子データ化された前記画像は、1〜3μm/ピクセルの倍率の画像である請求項1記載のフィルタ触媒。
- 連続した細孔を有する耐熱性多孔質体よりなる触媒担体基材と、該触媒担体基材の表面上に形成されたパティキュレートを燃焼する触媒層と、を有するフィルタ触媒の該触媒層の状態を解析するフィルタ触媒の触媒層の解析方法であって、
該フィルタ触媒の断面のSEM写真を電子データ化し、電子データ化された画像において該触媒層の外周を形成するピクセル数と、該触媒層を形成するピクセル数との比からコート状態を解析することを特徴とするフィルタ触媒の触媒層の解析方法。 - 電子データ化された前記画像は、1〜3μm/ピクセルの倍率の画像である請求項3記載のフィルタ触媒の触媒層の解析方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004033918A JP4526276B2 (ja) | 2004-02-10 | 2004-02-10 | フィルタ触媒およびその触媒層の解析方法 |
PCT/JP2005/002530 WO2005075052A1 (ja) | 2004-02-10 | 2005-02-10 | フィルタ触媒およびその触媒層の解析方法 |
EP05710376A EP1666117B1 (en) | 2004-02-10 | 2005-02-10 | Method of analyzing a catalytic layer |
US10/568,429 US8465703B2 (en) | 2004-02-10 | 2005-02-10 | Filter catalyst and method of analyzing a catalytic layer thereof |
Applications Claiming Priority (1)
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JP2004033918A JP4526276B2 (ja) | 2004-02-10 | 2004-02-10 | フィルタ触媒およびその触媒層の解析方法 |
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Publication Number | Publication Date |
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JP2005224666A true JP2005224666A (ja) | 2005-08-25 |
JP4526276B2 JP4526276B2 (ja) | 2010-08-18 |
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JP2004033918A Expired - Lifetime JP4526276B2 (ja) | 2004-02-10 | 2004-02-10 | フィルタ触媒およびその触媒層の解析方法 |
Country Status (4)
Country | Link |
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US (1) | US8465703B2 (ja) |
EP (1) | EP1666117B1 (ja) |
JP (1) | JP4526276B2 (ja) |
WO (1) | WO2005075052A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010017648A (ja) * | 2008-07-10 | 2010-01-28 | Nissan Motor Co Ltd | 排ガス浄化用触媒の製造方法 |
US8455391B2 (en) | 2008-05-12 | 2013-06-04 | Nissan Motor Co., Ltd. | Exhaust gas purifying catalyst and manufacturing method of the same |
WO2017163984A1 (ja) * | 2016-03-24 | 2017-09-28 | 株式会社キャタラー | 排ガス浄化装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101326924B1 (ko) * | 2011-09-21 | 2013-11-11 | 현대자동차주식회사 | 차량의 촉매 코팅액 제조방법 및 이를 이용한 촉매체 제조방법 및 촉매체 |
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2004
- 2004-02-10 JP JP2004033918A patent/JP4526276B2/ja not_active Expired - Lifetime
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2005
- 2005-02-10 EP EP05710376A patent/EP1666117B1/en not_active Expired - Fee Related
- 2005-02-10 WO PCT/JP2005/002530 patent/WO2005075052A1/ja not_active Application Discontinuation
- 2005-02-10 US US10/568,429 patent/US8465703B2/en active Active
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JP2010017648A (ja) * | 2008-07-10 | 2010-01-28 | Nissan Motor Co Ltd | 排ガス浄化用触媒の製造方法 |
WO2017163984A1 (ja) * | 2016-03-24 | 2017-09-28 | 株式会社キャタラー | 排ガス浄化装置 |
JP6297767B2 (ja) * | 2016-03-24 | 2018-03-20 | 株式会社キャタラー | 排ガス浄化装置 |
JPWO2017163984A1 (ja) * | 2016-03-24 | 2018-05-24 | 株式会社キャタラー | 排ガス浄化装置 |
US10022671B2 (en) | 2016-03-24 | 2018-07-17 | Cataler Corporation | Exhaust gas purification device |
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US8465703B2 (en) | 2013-06-18 |
EP1666117B1 (en) | 2011-09-14 |
JP4526276B2 (ja) | 2010-08-18 |
EP1666117A4 (en) | 2008-12-24 |
EP1666117A1 (en) | 2006-06-07 |
US20070003456A1 (en) | 2007-01-04 |
WO2005075052A1 (ja) | 2005-08-18 |
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