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MX2018002212A - Catalizadores de tratamiento de gas de escape. - Google Patents

Catalizadores de tratamiento de gas de escape.

Info

Publication number
MX2018002212A
MX2018002212A MX2018002212A MX2018002212A MX2018002212A MX 2018002212 A MX2018002212 A MX 2018002212A MX 2018002212 A MX2018002212 A MX 2018002212A MX 2018002212 A MX2018002212 A MX 2018002212A MX 2018002212 A MX2018002212 A MX 2018002212A
Authority
MX
Mexico
Prior art keywords
exhaust gas
effective
gas treatment
catalysts
carbon monoxide
Prior art date
Application number
MX2018002212A
Other languages
English (en)
Inventor
Fu Qi
Wassermann Knut
Deeba Michel
Yang Xiaofan
Zheng Xiaolai
Nagata Makoto
Kanno Yasuharu
Nakayama Hiroki
Original Assignee
Basf Corp
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 Basf Corp filed Critical Basf Corp
Publication of MX2018002212A publication Critical patent/MX2018002212A/es

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
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    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/82—Phosphates
    • B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
    • B01J29/85—Silicoaluminophosphates [SAPO compounds]
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    • 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
    • B01D53/9404—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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    • B01D—SEPARATION
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    • B01D53/34—Chemical or biological purification of waste gases
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    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
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    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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  • Chemical & Material Sciences (AREA)
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  • Organic Chemistry (AREA)
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  • Physics & Mathematics (AREA)
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  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Se describen catalizadores eficaces para reducir NOx, hidrocarburos y monóxido de carbono de un motor de gasolina con gas de escape. Tales catalizadores incluyen un sustrato que tiene un primer y un segundo material dispuestos sobre el mismo, el primer material es eficaz para catalizar la reducción catalítica selectiva de óxidos de nitrógeno en presencia de amoniaco y el segundo material es eficaz para reducir hidrocarburos y monóxido de carbono, el primer material comprende un tamiz molecular promovido con cobre y/o hierro en una carga baja, el segundo material comprende al menos un óxido de Ni, Fe, Mn, Co y Cu sobre un soporte seleccionado de óxidos de Ce, Ce-Zr, Zr, Mn, Pr y combinaciones de los mismos. También se describen los sistemas de tratamiento de gas de escape de los motores de gasolina y los procedimientos para tratar el gas de escape de un motor de gasolina.
MX2018002212A 2015-08-21 2016-08-18 Catalizadores de tratamiento de gas de escape. MX2018002212A (es)

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JP2018532573A (ja) 2018-11-08
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WO2017034920A1 (en) 2017-03-02
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CA2996032A1 (en) 2017-03-02
EP3337609A4 (en) 2019-05-01
US20180229224A1 (en) 2018-08-16
KR20180075480A (ko) 2018-07-04
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RU2018109758A3 (es) 2020-01-16
US10906032B2 (en) 2021-02-02

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