GB2511178B - NOx absorber catalysts - Google Patents

NOx absorber catalysts

Info

Publication number
GB2511178B
GB2511178B GB1322309.4A GB201322309A GB2511178B GB 2511178 B GB2511178 B GB 2511178B GB 201322309 A GB201322309 A GB 201322309A GB 2511178 B GB2511178 B GB 2511178B
Authority
GB
United Kingdom
Prior art keywords
nox absorber
absorber catalysts
catalysts
nox
absorber
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.)
Expired - Fee Related
Application number
GB1322309.4A
Other versions
GB201322309D0 (en
GB2511178A (en
Inventor
Ralf Dotzel
Rainer Leppelt
Jorg Werner Munch
Paul Richard Phillips
Hubert Schedel
Daniel Swallow
Elizabeth Hazel Mountstevens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority claimed from GB1101719.1A external-priority patent/GB2479808B/en
Publication of GB201322309D0 publication Critical patent/GB201322309D0/en
Publication of GB2511178A publication Critical patent/GB2511178A/en
Application granted granted Critical
Publication of GB2511178B publication Critical patent/GB2511178B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
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    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/322—Transition aluminas, e.g. delta or gamma aluminas
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3229—Cerium oxides or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
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    • C04B2235/6021—Extrusion moulding
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    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/606—Drying
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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

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  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
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  • Inorganic Chemistry (AREA)
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  • Catalysts (AREA)
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GB1322309.4A 2010-02-01 2011-02-01 NOx absorber catalysts Expired - Fee Related GB2511178B (en)

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DE102014205760A1 (en) * 2014-03-27 2015-10-01 Johnson Matthey Public Limited Company Process for producing a catalyst and catalyst
KR101905566B1 (en) 2016-11-16 2018-10-08 현대자동차 주식회사 Device for purifying exhaust gas
JP2022508041A (en) * 2018-10-30 2022-01-19 ビーエーエスエフ コーポレーション In-situ copper ion exchange in pre-exchanged copper zeolite material
CN115779561B (en) * 2022-11-17 2023-10-13 江苏省宜兴非金属化工机械厂有限公司 Ceramic fiber filter tube for dust removal and denitration of metallurgical coking furnace and preparation method thereof
CN116870897A (en) * 2023-07-01 2023-10-13 龙岩市新净环保科技有限公司 Wall-flow denitration catalyst and preparation method thereof

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2002083301A2 (en) * 2001-04-13 2002-10-24 Engelhard Corporation Sox tolerant nox trap catalysts and methods of making and using the same
WO2009089151A1 (en) * 2008-01-08 2009-07-16 Basf Catalysts Llc Multilayered catalyst composition for three-way catalytic conversion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083301A2 (en) * 2001-04-13 2002-10-24 Engelhard Corporation Sox tolerant nox trap catalysts and methods of making and using the same
WO2009089151A1 (en) * 2008-01-08 2009-07-16 Basf Catalysts Llc Multilayered catalyst composition for three-way catalytic conversion

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