BR9905093A - Catalisador de armazenamento de óxido de nitrogênio - Google Patents

Catalisador de armazenamento de óxido de nitrogênio

Info

Publication number
BR9905093A
BR9905093A BR9905093-5A BR9905093A BR9905093A BR 9905093 A BR9905093 A BR 9905093A BR 9905093 A BR9905093 A BR 9905093A BR 9905093 A BR9905093 A BR 9905093A
Authority
BR
Brazil
Prior art keywords
catalyst
nitrogen oxide
storage
oxide storage
barium
Prior art date
Application number
BR9905093-5A
Other languages
English (en)
Inventor
Wolfgang Dr Strehlau
Ulrich Dr Goebel
Rainer Dr Domesle
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of BR9905093A publication Critical patent/BR9905093A/pt

Links

Classifications

    • 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
    • B01D53/9422—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
    • 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
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/58—Platinum group metals with alkali- or alkaline earth 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
    • 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
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/053—Sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/202—Alkali metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2042—Barium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/40—Mixed oxides
    • B01D2255/407—Zr-Ce mixed oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

Patente de Invenção: <B>''CATALISADOR DE ARMAZENAMENTO DE óXIDO DE NITROGêNIO''<D>. A invenção se refere a um catalisador de armazenamento de óxido de nitrogênio que contém pelo menos um material catalisador e pelo menos um componente de armazenamento de óxido de nitrogênio do grupo dos metais alcalinos e alcalinos-terrosos. O catalisador de armazenamento de óxido de nitrogêrnio se caracteriza pelo fato do componente de armazenamento de óxido de nitrogênio, após o término da preparação do catalisador, estar presente como sulfato de bário, sulfato de estróncio finamente dividido ou como uma mistura ou cristais mistos dos dois sulfatos ou como seu produto de decomposição completa ou incompleta, com um tamanho de partícula médio de menos de 1Ám. Sulfato de bário e/ou sulfato de estróncio agem como materiais de alimentação para o componente de armazenamento ativo óxido de bário no catalisador de armazenamento de acordo com a invenção. Como resultado das composições de gás de axaustão redutoras que ocorre sob condições de direção normais, o sulfato de bário e o sulfato de estróncio se decompõem em compostos que são capazes de armazenar óxidos de nitrogênio. Isso mais ou menos compensa a perda de componentes de armazenamento ativos que ocorre devido ao envelhecimento. Também há a possibilidade de decompor o sulfato de bário e/ou sulfato de estróncio durante a produção, por meio de calcinação redutora, para se obter um alto carregamento inicial do catalisador com compostos de armazenamento. Nesse caso, os sulfatos mencionados são usados como agentes auxiliares para introduzir as concentrações mais altas possíveis de compostos de armazenamento no catalisador de armazenamento.
BR9905093-5A 1998-10-13 1999-10-11 Catalisador de armazenamento de óxido de nitrogênio BR9905093A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19847008A DE19847008A1 (de) 1998-10-13 1998-10-13 Stickoxid-Speicherkatalysator

Publications (1)

Publication Number Publication Date
BR9905093A true BR9905093A (pt) 2000-08-08

Family

ID=7884218

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9905093-5A BR9905093A (pt) 1998-10-13 1999-10-11 Catalisador de armazenamento de óxido de nitrogênio

Country Status (15)

Country Link
US (1) US6413904B1 (pt)
EP (1) EP0993860B1 (pt)
JP (1) JP3907884B2 (pt)
KR (1) KR100630592B1 (pt)
CN (1) CN1182910C (pt)
AR (1) AR020776A1 (pt)
AT (1) ATE359856T1 (pt)
AU (1) AU5360999A (pt)
BR (1) BR9905093A (pt)
CA (1) CA2285825C (pt)
DE (2) DE19847008A1 (pt)
MX (1) MXPA99009195A (pt)
PL (1) PL335960A1 (pt)
TR (1) TR199902534A3 (pt)
ZA (1) ZA996443B (pt)

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CN102256701B (zh) * 2008-12-19 2014-04-09 株式会社科特拉 废气净化用催化剂
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JP5337876B2 (ja) 2009-05-27 2013-11-06 株式会社キャタラー 排ガス浄化用触媒及びその製造方法
JP5558199B2 (ja) * 2010-05-13 2014-07-23 ユミコア日本触媒株式会社 排ガス浄化用触媒
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Also Published As

Publication number Publication date
EP0993860B1 (de) 2007-04-18
CN1262144A (zh) 2000-08-09
TR199902534A2 (xx) 2000-05-22
PL335960A1 (en) 2000-04-25
JP2000117110A (ja) 2000-04-25
KR20000029001A (ko) 2000-05-25
DE59914297D1 (de) 2007-05-31
KR100630592B1 (ko) 2006-10-04
CN1182910C (zh) 2005-01-05
AR020776A1 (es) 2002-05-29
TR199902534A3 (tr) 2000-05-22
DE19847008A1 (de) 2000-04-20
CA2285825A1 (en) 2000-04-13
US6413904B1 (en) 2002-07-02
ZA996443B (en) 2000-04-12
MXPA99009195A (es) 2004-09-01
ATE359856T1 (de) 2007-05-15
AU5360999A (en) 2000-04-20
EP0993860A1 (de) 2000-04-19
JP3907884B2 (ja) 2007-04-18
CA2285825C (en) 2009-01-20

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A , 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1876 DE 19/12/2006.