BR112017028256A2 - adsorvedor de nox passivo, sistema de escape para motores de combustão interna, método para reduzir nox em um gás de escape, e, catalisador - Google Patents

adsorvedor de nox passivo, sistema de escape para motores de combustão interna, método para reduzir nox em um gás de escape, e, catalisador

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Publication number
BR112017028256A2
BR112017028256A2 BR112017028256A BR112017028256A BR112017028256A2 BR 112017028256 A2 BR112017028256 A2 BR 112017028256A2 BR 112017028256 A BR112017028256 A BR 112017028256A BR 112017028256 A BR112017028256 A BR 112017028256A BR 112017028256 A2 BR112017028256 A2 BR 112017028256A2
Authority
BR
Brazil
Prior art keywords
nox
passive
combustion engine
internal combustion
nox adsorber
Prior art date
Application number
BR112017028256A
Other languages
English (en)
Inventor
Elaine Collier Jillian
Yang Sanyuan
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
Publication of BR112017028256A2 publication Critical patent/BR112017028256A2/pt

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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • 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
    • B01J29/74—Noble metals
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
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    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
    • B01J29/44—Noble metals
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    • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

um adsorvedor de nox passivo é descrito. o adsorvedor de nox passivo é eficaz para adsorver nox em uma temperatura baixa ou baixa e liberar nox adsorvido a temperaturas acima da baixa temperatura. o adsorvedor de nox passivo compreende um metal nobre e uma peneira molecular com um tipo de quadro ltl. a invenção também inclui um sistema de escape que compreende o adsorvedor de nox passivo e um método para tratar gases de escape de um motor de combustão interna utilizando o adsorvedor de nox passivo.
BR112017028256A 2015-07-02 2016-06-27 adsorvedor de nox passivo, sistema de escape para motores de combustão interna, método para reduzir nox em um gás de escape, e, catalisador BR112017028256A2 (pt)

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PCT/GB2016/051915 WO2017001828A1 (en) 2015-07-02 2016-06-27 PASSIVE NOx ADSORBER

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