JPWO2019221266A1 - 排気ガス浄化触媒 - Google Patents
排気ガス浄化触媒 Download PDFInfo
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- JPWO2019221266A1 JPWO2019221266A1 JP2020519940A JP2020519940A JPWO2019221266A1 JP WO2019221266 A1 JPWO2019221266 A1 JP WO2019221266A1 JP 2020519940 A JP2020519940 A JP 2020519940A JP 2020519940 A JP2020519940 A JP 2020519940A JP WO2019221266 A1 JPWO2019221266 A1 JP WO2019221266A1
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- JP
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- Prior art keywords
- zeolite
- scr
- particle size
- exhaust gas
- dpf
- Prior art date
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- Granted
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- 239000003054 catalyst Substances 0.000 title claims abstract description 36
- 238000000746 purification Methods 0.000 title claims abstract description 34
- 239000010457 zeolite Substances 0.000 claims abstract description 38
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 34
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 23
- 239000011164 primary particle Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 18
- 238000002296 dynamic light scattering Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 21
- 239000000463 material Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 9
- 238000005192 partition Methods 0.000 description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000282341 Mustela putorius furo Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 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
- 238000011156 evaluation Methods 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/76—Iron group metals or copper
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/915—Catalyst supported on particulate filters
- B01D2255/9155—Wall flow filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9202—Linear dimensions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/063—Surface coverings for exhaust purification, e.g. catalytic reaction zeolites
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
SCR/DPF触媒は、自動車のエンジンから排出された排気ガスに含まれるPMをDPFで捕集することにくわえ、SCRでNOxを無害なN2やH2Oに還元する触媒であり、通常、自動車の底部に設けられる。
本実施形態に係るSCRは、一次粒子径が0.5μm以下である、Cuを含有するゼオライトである。なお、ゼオライトを粉末化した状態においては、一次粒子は分散して存在していてよいし、一次粒子が凝集していわゆる二次粒子を形成していて一次粒子径より大きなサイズになっていても良い。
一次粒子径が0.5μm以下であるCHA構造を有するゼオライトまたは一次粒子径が2μmであるCHA構造を有するゼオライトをイオン交換水に分散させ、実施例1−3、比較例1−3および6にかかる、SCRとしてのスラリーを作製した。各実施例、比較例においていずれのゼオライトを使用したかについては、表1で明示する(比較例4、5についても同じ)。
表1に示したゼオライトをイオン交換水に分散させ、スラリーを作製した。作製したスラリーを、日本ガイシ社製 コージェライト フロースルーハニカム基材(セル厚5ミル、セル密度300cpi)に充填し、乾燥後、450℃以上で焼成した。焼成体をくりぬき、φ25mm×50mmのサイズに形成したものを、SCRとして使用した。
(1)FE−SEM装置を用い、ゼオライト粉末を10,000倍で撮影した。
(2)その画像にて、CHA構造に特有な立方体形状を有している最小単位結晶について少なくとも20個以上、画像解析ソフトでサイズ(フェレー径)を測定し、その平均径を求めた。なお凝集状態にある場合は、表面に露出している面の対角線長さを計測してその値も使用した。
排気ガスを模した模擬ガスの組成は次の通りである。
Claims (4)
- Cuを含有し、一次粒子径が0.5μm以下であるゼオライトを用いて作製した、25℃において粘度が20mPa・s以下のスラリーを、DPF基材に充填してなることを特徴とする、排気ガス浄化触媒。
- さらに、前記ゼオライトの、動的光散乱法により測定した50%粒子径が2.0μm以下であることを特徴とする、請求項1に記載の排気ガス浄化触媒。
- さらに、前記ゼオライトの、動的光散乱法により測定した90%粒子径が2.5μm以下であることを特徴とする、請求項1または2に記載の排気ガス浄化触媒。
- さらに、前記スラリーにおける、前記ゼオライトの50%粒子径が2.0μm以下であることを特徴とする、請求項1〜3のいずれか1項に記載の排気ガス浄化触媒。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018095467 | 2018-05-17 | ||
JP2018095467 | 2018-05-17 | ||
JP2018177792 | 2018-09-21 | ||
JP2018177792 | 2018-09-21 | ||
PCT/JP2019/019648 WO2019221266A1 (ja) | 2018-05-17 | 2019-05-17 | 排気ガス浄化触媒 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2019221266A1 true JPWO2019221266A1 (ja) | 2021-07-01 |
JP7242660B2 JP7242660B2 (ja) | 2023-03-20 |
Family
ID=68540260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020519940A Active JP7242660B2 (ja) | 2018-05-17 | 2019-05-17 | 排気ガス浄化触媒 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210207515A1 (ja) |
EP (1) | EP3795246A4 (ja) |
JP (1) | JP7242660B2 (ja) |
CN (1) | CN112118908A (ja) |
WO (1) | WO2019221266A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005152774A (ja) * | 2003-11-25 | 2005-06-16 | Cataler Corp | パティキュレートフィルタ触媒及びその製造方法 |
JP2010501326A (ja) * | 2006-08-19 | 2010-01-21 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 触媒で被覆されたディーゼル粒子フィルター、その製造方法、およびその使用 |
JP2014198654A (ja) * | 2013-03-29 | 2014-10-23 | 日本碍子株式会社 | ハニカム構造体 |
JP2015112559A (ja) * | 2013-12-12 | 2015-06-22 | 株式会社キャタラー | パティキュレートフィルタ |
WO2017100384A1 (en) * | 2015-12-09 | 2017-06-15 | Basf Corporation | Cha type zeolitic materials and methods for their preparation using combinations of cycloal-kyl- and ethyltrimethylammonium compounds |
JP2017519627A (ja) * | 2014-06-18 | 2017-07-20 | ビーエーエスエフ コーポレーション | モレキュラーシーブ触媒組成物、触媒複合体、システム、及び方法 |
WO2017134007A1 (en) * | 2016-02-01 | 2017-08-10 | Haldor Topsøe A/S | Method for the removal of nitrous oxide from off gas in presence of catalyst comprising an fe-aei zeolite material essentially free of alkali metal |
WO2017163984A1 (ja) * | 2016-03-24 | 2017-09-28 | 株式会社キャタラー | 排ガス浄化装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7229597B2 (en) | 2003-08-05 | 2007-06-12 | Basfd Catalysts Llc | Catalyzed SCR filter and emission treatment system |
US20130281284A1 (en) * | 2010-12-27 | 2013-10-24 | Mitsubishi Plastics, Inc. | Catalyst for nitrogen oxide removal |
-
2019
- 2019-05-17 CN CN201980032489.1A patent/CN112118908A/zh active Pending
- 2019-05-17 JP JP2020519940A patent/JP7242660B2/ja active Active
- 2019-05-17 EP EP19803702.0A patent/EP3795246A4/en active Pending
- 2019-05-17 WO PCT/JP2019/019648 patent/WO2019221266A1/ja active Application Filing
- 2019-05-17 US US17/056,113 patent/US20210207515A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005152774A (ja) * | 2003-11-25 | 2005-06-16 | Cataler Corp | パティキュレートフィルタ触媒及びその製造方法 |
JP2010501326A (ja) * | 2006-08-19 | 2010-01-21 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 触媒で被覆されたディーゼル粒子フィルター、その製造方法、およびその使用 |
JP2014198654A (ja) * | 2013-03-29 | 2014-10-23 | 日本碍子株式会社 | ハニカム構造体 |
JP2015112559A (ja) * | 2013-12-12 | 2015-06-22 | 株式会社キャタラー | パティキュレートフィルタ |
JP2017519627A (ja) * | 2014-06-18 | 2017-07-20 | ビーエーエスエフ コーポレーション | モレキュラーシーブ触媒組成物、触媒複合体、システム、及び方法 |
WO2017100384A1 (en) * | 2015-12-09 | 2017-06-15 | Basf Corporation | Cha type zeolitic materials and methods for their preparation using combinations of cycloal-kyl- and ethyltrimethylammonium compounds |
WO2017134007A1 (en) * | 2016-02-01 | 2017-08-10 | Haldor Topsøe A/S | Method for the removal of nitrous oxide from off gas in presence of catalyst comprising an fe-aei zeolite material essentially free of alkali metal |
WO2017163984A1 (ja) * | 2016-03-24 | 2017-09-28 | 株式会社キャタラー | 排ガス浄化装置 |
Also Published As
Publication number | Publication date |
---|---|
CN112118908A (zh) | 2020-12-22 |
WO2019221266A1 (ja) | 2019-11-21 |
EP3795246A4 (en) | 2022-03-02 |
US20210207515A1 (en) | 2021-07-08 |
JP7242660B2 (ja) | 2023-03-20 |
EP3795246A1 (en) | 2021-03-24 |
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