BR112017001795A2 - processo para produzir um catalisador cerâmico, artigo catalisador, e, partículas funcionais. - Google Patents

processo para produzir um catalisador cerâmico, artigo catalisador, e, partículas funcionais.

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Publication number
BR112017001795A2
BR112017001795A2 BR112017001795-4A BR112017001795A BR112017001795A2 BR 112017001795 A2 BR112017001795 A2 BR 112017001795A2 BR 112017001795 A BR112017001795 A BR 112017001795A BR 112017001795 A2 BR112017001795 A2 BR 112017001795A2
Authority
BR
Brazil
Prior art keywords
catalyst
functional particles
particles
layer
producing
Prior art date
Application number
BR112017001795-4A
Other languages
English (en)
Other versions
BR112017001795B1 (pt
Inventor
Bauer Juergen
Original Assignee
Johnson Matthey Public Limited Company
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 Public Limited Company filed Critical Johnson Matthey Public Limited Company
Publication of BR112017001795A2 publication Critical patent/BR112017001795A2/pt
Publication of BR112017001795B1 publication Critical patent/BR112017001795B1/pt

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    • 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
    • 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
    • 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
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • 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
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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Civil Engineering (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

para produzir o catalisador (2), a) são providas partículas funcionais (8), tendo um formador de poros cataliticamente inativo (4) como suporte cercado por uma camada (5) de um material cataliticamente ativo, b) as partículas funcionais (8) são processadas com partículas inorgânicas adicionais (10) para gerar um material catalítico (12), c) o material catalítico (12) é termicamente tratado para formar o catalisador cerâmico (2), em que o catalisador (2) compreende pelo menos células porosas cataliticamente inativas (20) ?que são formadas por formadores de poros (4) nas partículas funcionais (8), ?que estão incorporadas em uma matriz (24) compreendendo as partículas inorgânicas adicionais (10), ?que formam uma estrutura porosa (18) e ?que são pelo menos parcialmente cercadas por uma camada de interface ativa (22) compreendendo o material cataliticamente ativo da camada (5) das partículas funcionais (8). um catalisador scr (2) produzido desta forma tem uma taxa de conversão no melhorada em comparação a um catalisador scr produzido convencionalmente.
BR112017001795-4A 2014-07-31 2015-07-24 Processo para produzir um catalisador cerâmico, artigo catalisador, e, partículas funcionais BR112017001795B1 (pt)

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PCT/GB2015/052161 WO2016016622A1 (en) 2014-07-31 2015-07-24 Process for producing a catalyst and catalyst article

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