BR112018071267A2 - composição catalisadora, artigo catalisador, método para reduzir os níveis de co, hc, e nox, método de preparação de um artigo catalisador e sistema de tratamento de gases de exaustão - Google Patents

composição catalisadora, artigo catalisador, método para reduzir os níveis de co, hc, e nox, método de preparação de um artigo catalisador e sistema de tratamento de gases de exaustão

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Publication number
BR112018071267A2
BR112018071267A2 BR112018071267A BR112018071267A BR112018071267A2 BR 112018071267 A2 BR112018071267 A2 BR 112018071267A2 BR 112018071267 A BR112018071267 A BR 112018071267A BR 112018071267 A BR112018071267 A BR 112018071267A BR 112018071267 A2 BR112018071267 A2 BR 112018071267A2
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BR
Brazil
Prior art keywords
catalyst
catalyst article
catalyst composition
preparing
reducing
Prior art date
Application number
BR112018071267A
Other languages
English (en)
Inventor
Deeba Michel
Wang Xiaoming
Original Assignee
Basf Corp
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Filing date
Publication date
Application filed by Basf Corp filed Critical Basf Corp
Publication of BR112018071267A2 publication Critical patent/BR112018071267A2/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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
    • B01D53/9468—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different layers
    • 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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
    • B01D53/9472—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different zones
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
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Abstract

a presente divulgação fornece uma composição catalisadora de conversão de três vias (twc) adequada para, pelo menos, conversão parcial de hidrocarbonetos (hc), monóxido de carbono (co) e óxidos de nitrogênio (nox) gasosos. geralmente, a composição catalisadora compreende um componente de metal do grupo da platina impregnado em um suporte de óxido refratário poroso, em que o suporte de óxido refratário poroso tem um raio médio de poro que varia de cerca de 250 å a cerca de 5000 å, um volume total de intrusão de pelo menos cerca de 1,8 ml/g e uma porosidade de pelo menos cerca de 80%.
BR112018071267A 2016-04-22 2017-02-28 composição catalisadora, artigo catalisador, método para reduzir os níveis de co, hc, e nox, método de preparação de um artigo catalisador e sistema de tratamento de gases de exaustão BR112018071267A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662326141P 2016-04-22 2016-04-22
PCT/US2017/019808 WO2017184256A1 (en) 2016-04-22 2017-02-28 Platinum group metal catalysts supported on large pore alumina support

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BR112018071267A2 true BR112018071267A2 (pt) 2019-02-05

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