BR112022011865A2 - Artigo de catalisador, processos para a preparação de um artigo de catalisador, aparelho para preparar o artigo catalítico, sistema de exaustão, métodos para tratar uma corrente de exaustão e para reduzir os níveis de hidrocarbonetos, monóxido de carbono e óxido de nitrogênio e uso do catalisador - Google Patents

Artigo de catalisador, processos para a preparação de um artigo de catalisador, aparelho para preparar o artigo catalítico, sistema de exaustão, métodos para tratar uma corrente de exaustão e para reduzir os níveis de hidrocarbonetos, monóxido de carbono e óxido de nitrogênio e uso do catalisador

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Publication number
BR112022011865A2
BR112022011865A2 BR112022011865A BR112022011865A BR112022011865A2 BR 112022011865 A2 BR112022011865 A2 BR 112022011865A2 BR 112022011865 A BR112022011865 A BR 112022011865A BR 112022011865 A BR112022011865 A BR 112022011865A BR 112022011865 A2 BR112022011865 A2 BR 112022011865A2
Authority
BR
Brazil
Prior art keywords
catalyst
article
preparing
substrate
axial
Prior art date
Application number
BR112022011865A
Other languages
English (en)
Inventor
Vjunov Aleksei
Sun Yipeng
Original Assignee
Basf Corp
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Filing date
Publication date
Application filed by Basf Corp filed Critical Basf Corp
Publication of BR112022011865A2 publication Critical patent/BR112022011865A2/pt

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  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
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  • Exhaust Gas After Treatment (AREA)

Abstract

ARTIGO DE CATALISADOR, PROCESSOS PARA A PREPARAÇÃO DE UM ARTIGO DE CATALISADOR, APARELHO PARA PREPARAR O ARTIGO CATALÍTICO, SISTEMA DE EXAUSTÃO, MÉTODOS PARA TRATAR UMA CORRENTE DE EXAUSTÃO E PARA REDUZIR OS NÍVEIS DE HIDROCARBONETOS, MONÓXIDO DE CARBONO E ÓXIDO DE NITROGÊNIO E USO DO CATALISADOR. A presente invenção refere-se a um artigo de catalisador de controle de emissão que compreende: um substrato que tem uma extremidade axial de entrada e de saída, uma camada de washcoat inferior revestida no comprimento de 60% a 100% do substrato a partir da extremidade axial de entrada até a extremidade axial de saída, e uma camada de washcoat superior revestida no comprimento de 60 a 100% do substrato a partir da extremidade axial de entrada ou da extremidade axial de saída ou ambas as extremidades do substrato, de modo que a camada superior cubra pelo menos 60% do comprimento da camada de washcoat inferior, em que pelo menos parte da camada de washcoat superior e/ou da camada de washcoat inferior compreende uma primeira e uma segunda porção, em que a primeira porção começa na extremidade axial de entrada ou na extremidade axial de saída do substrato e exibe uma concentração de metal do grupo da platina de 2 a 100 vezes maior do que a concentração de um metal do grupo da platina na segunda porção, em que a primeira porção compreende 5 a 50% do volume de substrato e exibe uma disposição de zona axial e/ou radial tridimensional começando a partir da extremidade axial de entrada ou da extremidade axial de saída ou ambas, em que a carga de metal do grupo da platina na primeira porção é 0,35 a 35,31 g/l.
BR112022011865A 2019-12-19 2020-12-16 Artigo de catalisador, processos para a preparação de um artigo de catalisador, aparelho para preparar o artigo catalítico, sistema de exaustão, métodos para tratar uma corrente de exaustão e para reduzir os níveis de hidrocarbonetos, monóxido de carbono e óxido de nitrogênio e uso do catalisador BR112022011865A2 (pt)

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