JP6395602B2 - 触媒微粒子フィルター及び微粒子フィルターの被覆方法 - Google Patents
触媒微粒子フィルター及び微粒子フィルターの被覆方法 Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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- 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
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- B01J37/024—Multiple impregnation or coating
- B01J37/0244—Coatings comprising several layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01J37/0246—Coatings comprising a zeolite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
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- 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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/2073—Means for generating a reducing substance from the exhaust gases
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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
- F01N3/24—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
- F01N3/2832—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support granular, e.g. pellets
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- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
- F01N2510/0684—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having more than one coating layer, e.g. multi-layered coatings
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Description
(a)壁流フィルター本体に、ガス透過性多孔質隔壁によって隔てられた複数の長手入口流路及び出口流路を与え;
(b)窒素酸化物と一酸化炭素及び水素とを反応させてアンモニアにするのに活性のある第1触媒組成物と共に、アンモニアと反応することにより窒素酸化物を窒素に選択的還元するのに活性のある第2触媒組成物を含む触媒ウォッシュコートを与え、ここで、該第1触媒組成物は、該多孔質隔壁の平均孔径よりも小さな粒径を有し、該第2触媒組成物は、該多孔質隔壁の平均孔径よりも大きな粒径を有するものとし;
(c)該触媒ウォッシュコートを該出口流路の出口端に導入することによって該フィルター本体を該ウォッシュコートで被覆し;そして
(d)該被覆フィルター本体を乾燥させ熱処理して触媒微粒子フィルターを得ること
を含む方法を提供する。
NOx+H2/CO=NH3+CO2+H2O
によってNOxをアンモニアにする反応に有用な触媒は、パラジウム、白金、パラジウムとロジウムとの混合物及びパラジウムと白金とロジウムとの混合物である。
NOx+NH3=N2+H2O。
(a)壁流フィルター本体に、ガス透過性多孔質隔壁によって隔てられた複数の長手入口流路及び出口流路を与え;
(b)窒素酸化物と一酸化炭素及び水素とを反応させてアンモニアにするのに活性のある第1触媒組成物と、アンモニアと反応することにより窒素酸化物を窒素に選択的還元するのに活性のある第2触媒組成物とを含む触媒ウォッシュコートを与え、ここで、該第1触媒組成物は、該多孔質隔壁の平均孔径よりも小さいモード粒径を有し、該第2触媒組成物は、該多孔質隔壁の平均孔径よりも大きいモード粒径を有するものとし;
(c)該触媒ウォッシュコートを該出口流路の出口端に導入することによって該フィルター本体に該ウォッシュコートを被覆し;そして
(d)該被覆フィルター本体を乾燥させ熱処理して触媒微粒子フィルターを得ること
を含む方法を提供する。
アンモニアの選択的酸化に活性な触媒組成物を含有する第2ウォッシュコートを与え;そして
出口流路の少なくとも一部分に該ウォッシュコートを被覆し、その後触媒ウォッシュコートを被覆すること
を含む。
第1触媒組成物の懸濁液を、第1工程で、フィルター壁の平均孔径よりも小さな粒径の酸化セリウム及びアルミナ粒子上に被着されたパラジウムロジウムの粉末混合物から調製する。
Claims (3)
- 触媒壁流フィルターの製造方法であって、次の工程:
(a)壁流フィルター本体に、ガス透過性多孔質隔壁によって隔てられた複数の長手入口流路及び出口流路を与え;
(b)窒素酸化物と一酸化炭素及び水素とを反応させてアンモニアにするのに活性のある第1触媒組成物と、アンモニアと反応することにより窒素酸化物を窒素に選択的還元するのに活性のある第2触媒組成物とを含む触媒ウォッシュコートを与え、ここで、該第1触媒組成物は、該多孔質隔壁の平均孔径よりも小さいモード粒径を有し、該第2触媒組成物は、該多孔質隔壁の平均孔径よりも大きいモード粒径を有するものとし;
(c)該触媒ウォッシュコートを該出口流路の出口端に導入することによって該フィルター本体に該ウォッシュコートを被覆し;そして
(d)該被覆フィルター本体を乾燥させ熱処理して触媒微粒子フィルターを得ることを含み、
前記第1触媒組成物の触媒がパラジウム、白金、パラジウムとロジウムとの混合物、又はパラジウムと白金とロジウムとの混合物を含み、
前記第2触媒組成物の触媒がゼオライト、シリカアルミニウムホスフェート、イオン交換ゼオライト、鉄及び/又は銅で活性の高められたシリカアルミニウムホスフェート、1種以上の卑金属酸化物、のうちの少なくとも一つを含む、前記製造方法。 - 前記第1触媒組成物の触媒がパラジウムからなる、請求項1に記載の方法。
- 次の工程:
アンモニアの酸化に活性な触媒組成物を含有する第2ウォッシュコートを与え;そして 出口流路の一部に出口端の領域で該第2ウォッシュコートを被覆すること
をさらに含む、請求項1または2に記載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201100537 | 2011-07-13 | ||
| DKPA201100537 | 2011-07-13 | ||
| PCT/EP2012/061328 WO2013007466A1 (en) | 2011-07-13 | 2012-06-14 | Method for coating a catalysed particulate filter and a particulate filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2014524833A JP2014524833A (ja) | 2014-09-25 |
| JP6395602B2 true JP6395602B2 (ja) | 2018-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2014519477A Active JP6395602B2 (ja) | 2011-07-13 | 2012-06-14 | 触媒微粒子フィルター及び微粒子フィルターの被覆方法 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20140170033A1 (ja) |
| JP (1) | JP6395602B2 (ja) |
| KR (1) | KR101882841B1 (ja) |
| CN (1) | CN103826745A (ja) |
| BR (1) | BR112014000287A2 (ja) |
| CA (1) | CA2837803A1 (ja) |
| MX (1) | MX2014000499A (ja) |
| RU (1) | RU2606185C2 (ja) |
| WO (1) | WO2013007466A1 (ja) |
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| JP2018521258A (ja) * | 2015-05-19 | 2018-08-02 | ハルドール・トプサー・アクチエゼルスカベット | 粒子状物質および有害化合物をエンジン排気ガスから除去するための方法、多機能フィルタおよびシステム |
| CN111305931A (zh) * | 2018-12-12 | 2020-06-19 | 汪利峰 | 内燃机车壁流式颗粒过滤器的催化剂涂敷方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69217108T2 (de) * | 1991-04-22 | 1997-07-10 | Corning Inc | Katalytisches Reaktorsystem |
| RU2059841C1 (ru) * | 1993-08-24 | 1996-05-10 | Малое предприятие "Технология" | Фильтр для очистки выхлопных газов двигателей внутреннего сгорания |
| JP3387290B2 (ja) * | 1995-10-02 | 2003-03-17 | トヨタ自動車株式会社 | 排ガス浄化用フィルター |
| US5981427A (en) * | 1996-09-04 | 1999-11-09 | Engelhard Corporation | Catalyst composition |
| JP3888171B2 (ja) * | 2002-01-28 | 2007-02-28 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置、および、該排気浄化装置のパティキュレートフィルタに触媒を担持させる触媒担持方法 |
| US7332135B2 (en) * | 2002-10-22 | 2008-02-19 | Ford Global Technologies, Llc | Catalyst system for the reduction of NOx and NH3 emissions |
| US7198764B2 (en) * | 2003-03-05 | 2007-04-03 | Delphi Technologies, Inc. | Gas treatment system and a method for using the same |
| DE102004040551A1 (de) * | 2004-08-21 | 2006-02-23 | Umicore Ag & Co. Kg | Verfahren zur Beschichtung eines Wandflußfilters mit einer Beschichtungszusammensetzung |
| US7611680B2 (en) * | 2004-10-28 | 2009-11-03 | Nanostellar, Inc. | Platinum-bismuth catalysts for treating engine exhaust |
| DE202005008146U1 (de) * | 2005-05-24 | 2005-07-28 | Arvinmeritor Emissions Technologies Gmbh | Abgasanlage für ein Kraftfahrzeug |
| DE502007003465D1 (de) * | 2007-02-23 | 2010-05-27 | Umicore Ag & Co Kg | Katalytisch aktiviertes Dieselpartikelfilter mit Ammoniak-Sperrwirkung |
| JP2008212799A (ja) * | 2007-03-01 | 2008-09-18 | Okayama Univ | 排ガス中の窒素酸化物を接触還元するための触媒と方法 |
| JP5110954B2 (ja) * | 2007-05-09 | 2012-12-26 | エヌ・イーケムキャット株式会社 | 選択還元型触媒を用いた排気ガス浄化触媒装置並びに排気ガス浄化方法 |
| US20100275582A1 (en) * | 2008-01-08 | 2010-11-04 | Honda Motor Co., Ltd. | Exhaust emission control device for internal combustion engine |
| US20100101221A1 (en) * | 2008-10-28 | 2010-04-29 | Caterpillar Inc. | CATALYSTS, SYSTEMS, AND METHODS FOR REDUCING NOx IN AN EXHAUST GAS |
| US9662611B2 (en) * | 2009-04-03 | 2017-05-30 | Basf Corporation | Emissions treatment system with ammonia-generating and SCR catalysts |
| DE102009033635B4 (de) * | 2009-07-17 | 2020-11-05 | Umicore Ag & Co. Kg | Katalytisch aktives Partikelfilter mit Schwefelwasserstoff-Sperrfunktion, seine Verwendung und Verfahren zur Entfernung von Stickoxiden und Partikeln |
| GB201100595D0 (en) * | 2010-06-02 | 2011-03-02 | Johnson Matthey Plc | Filtration improvements |
-
2012
- 2012-06-14 JP JP2014519477A patent/JP6395602B2/ja active Active
- 2012-06-14 US US14/131,653 patent/US20140170033A1/en not_active Abandoned
- 2012-06-14 KR KR1020137035008A patent/KR101882841B1/ko active Active
- 2012-06-14 MX MX2014000499A patent/MX2014000499A/es not_active Application Discontinuation
- 2012-06-14 WO PCT/EP2012/061328 patent/WO2013007466A1/en not_active Ceased
- 2012-06-14 CN CN201280034636.7A patent/CN103826745A/zh active Pending
- 2012-06-14 BR BR112014000287A patent/BR112014000287A2/pt not_active Application Discontinuation
- 2012-06-14 CA CA2837803A patent/CA2837803A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2606185C2 (ru) | 2017-01-10 |
| US20140170033A1 (en) | 2014-06-19 |
| KR101882841B1 (ko) | 2018-07-31 |
| WO2013007466A1 (en) | 2013-01-17 |
| CA2837803A1 (en) | 2013-01-17 |
| MX2014000499A (es) | 2014-02-19 |
| RU2014104855A (ru) | 2015-08-20 |
| KR20140036278A (ko) | 2014-03-25 |
| BR112014000287A2 (pt) | 2017-02-14 |
| JP2014524833A (ja) | 2014-09-25 |
| CN103826745A (zh) | 2014-05-28 |
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