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RU2017134740A - ПАССИВНЫЙ АДСОРБЕР NOx, СОДЕРЖАЩИЙ БЛАГОРОДНЫЙ МЕТАЛЛ И МОЛЕКУЛЯРНОЕ СИТО, ИМЕЮЩЕЕ ТИП КАРКАСНОЙ СТРУКТУРЫ OFF - Google Patents

ПАССИВНЫЙ АДСОРБЕР NOx, СОДЕРЖАЩИЙ БЛАГОРОДНЫЙ МЕТАЛЛ И МОЛЕКУЛЯРНОЕ СИТО, ИМЕЮЩЕЕ ТИП КАРКАСНОЙ СТРУКТУРЫ OFF Download PDF

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Publication number
RU2017134740A
RU2017134740A RU2017134740A RU2017134740A RU2017134740A RU 2017134740 A RU2017134740 A RU 2017134740A RU 2017134740 A RU2017134740 A RU 2017134740A RU 2017134740 A RU2017134740 A RU 2017134740A RU 2017134740 A RU2017134740 A RU 2017134740A
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RU
Russia
Prior art keywords
passive
adsorber
molecular sieve
catalyst
noble metal
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RU2017134740A
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English (en)
Inventor
Джиллиан Элэйн КОЛЛИЕР
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Джонсон Мэтти Паблик Лимитед Компани
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Publication of RU2017134740A publication Critical patent/RU2017134740A/ru

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    • B01J29/80—Mixtures of different zeolites
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    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • 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
    • Y02T10/40—Engine management systems

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Claims (20)

1. Пассивный адсорбер NOx, эффективный для адсорбции NOx при низкой температуре или ниже и высвобождать адсорбированные NOx при температурах выше данной низкой температуры, при этом указанный пассивный адсорбер NOx содержит первый благородный металл и молекулярное сито, имеющее каркасную структуру типа OFF.
2. Пассивный адсорбер NOx по п. 1, в котором первый благородный металл выбран из группы, состоящей из платины, палладия, родия, золота, серебра, иридия, рутения, осмия и их смесей.
3. Пассивный адсорбер NOx по п. 1, в котором первым благородным металлом является палладий.
4. Пассивный адсорбер NOx по любому из пп. 1-3, в котором молекулярное сито, имеющее тип каркасной структуры OFF, выбрано из группы, состоящей из алюмосиликатного цеолита и алюмосиликатного цеолита с замещенным металлом.
5. Пассивный адсорбер NOx по любому из пп. 1-3, в котором молекулярное сито, имеющее тип каркасной структуры OFF, выбрано из группы, состоящей из цеолитов Linde T, LZ-217, RMA-4, TMA-O и цеолита оффретитного типа.
6. Пассивный адсорбер NOx по любому из пп. 1-5, где пассивный адсорбер NOx нанесен на проточную или фильтрующую основу.
7. Пассивный адсорбер NOx по любому из пп. 1-5, где пассивный адсорбер NOx экструдирован, чтобы сформировать проточную или фильтрующую основу.
8. Пассивный адсорбер NOx по любому из пп. 1-7, дополнительно содержащий второй катализатор на основе молекулярного сита, где второй катализатор на основе молекулярного сита содержит второй благородный металл и второе молекулярное сито, при этом второе молекулярное сито не имеет тип каркасной структуры OFF.
9. Пассивный адсорбер NOx по п. 8, в котором первый благородный металл и второй благородный металл независимым образом выбраны из группы, состоящей из платины, палладия, родия, золота, серебра, иридия, рутения, осмия и их смесей.
10. Пассивный адсорбер NOx по п. 8, в котором первый благородный металл и второй благородный металл являются оба палладием.
11. Пассивный адсорбер NOx по любому из пп. 8-10, в котором второе молекулярное сито является молекулярным ситом с малым, средним или большим размером пор, выбранным из группы типов каркасной структуры, состоящей из ACO, AEI, AEN, AFN, AFT, AFX, ANA, APC, APD, ATT, CDO, CHA, DDR, DFT, EAB, EDI, EPI, ERI, GIS, GOO, IHW, ITE, ITW, LEV, KFI, MAZ, MER, MON, NSI, OWE, PAU, PHI, RHO, RTH, SAT, SAV, SFW, SIV, THO, TSC, UEI, UFI, VNI, YUG, ZON, BEA и MFI, и сростков двух или более их видов.
12. Пассивный адсорбер NOx по п. 11, в котором молекулярное сито с малым размером пор выбрано из группы типов каркасной структуры, состоящей из AEI и CHA.
13. Пассивный адсорбер NOx по любому из пп. 8-12, в котором пассивный адсорбер NOx нанесен на проточную или фильтрующую основу.
14. Пассивный адсорбер NOx по любому из пп. 8-13, имеющий первый слой и второй слой, где первый слой содержит первый благородный металл и молекулярное сито, имеющее тип каркасной структуры OFF, и второй слой содержит второй катализатор на основе молекулярного сита.
15. Пассивный адсорбер NOx по любому из пп. 8-13, имеющий первую зону и вторую зону, где первая зона содержит первый благородный металл и молекулярное сито, имеющее тип каркасной структуры OFF, и вторая зона содержит второй катализатор на основе молекулярного сита.
16. Пассивный адсорбер NOx по любому из пп. 1-15, где низкая температура составляет 200°C.
17. Выхлопная система для двигателей внутреннего сгорания, содержащая пассивный адсорбер NOx по любому из пп. 1-16 и каталитический компонент, выбранный из группы, состоящей из катализатора селективного каталитического восстановления (SCR), фильтра очистки от микрочастиц, фильтра селективного каталитического восстановления (SCR), адсорбера-катализатора NOx, тройного катализатора, катализатора окисления и их комбинаций.
18. Способ восстановления NOx в выхлопных газах, включающий адсорбирование NOx на пассивном адсорбере NOx по любому из пп. 1-15 при низкой температуре или ниже, термическое десорбирование NOx от пассивного адсорбера NOx при температуре выше данной низкой температуры, и каталитическое удаление десорбированного NOx на каталитическом компоненте ниже по течению потока от пассивного адсорбера NOx.
19. Способ по п. 18, в котором каталитический компонент выбран из группы, состоящей из катализатора селективного каталитического восстановления (SCR), фильтра очистки от микрочастиц, фильтра селективного каталитического восстановления (SCR), адсорбера-катализатора NOx, тройного катализатора, катализатора окисления и их комбинаций.
20. Способ по п. 18 или п. 19, в котором низкая температура составляет 200°C.
RU2017134740A 2015-03-25 2016-03-18 ПАССИВНЫЙ АДСОРБЕР NOx, СОДЕРЖАЩИЙ БЛАГОРОДНЫЙ МЕТАЛЛ И МОЛЕКУЛЯРНОЕ СИТО, ИМЕЮЩЕЕ ТИП КАРКАСНОЙ СТРУКТУРЫ OFF RU2017134740A (ru)

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