RU2008133623A - EXHAUST GAS CLEANING CATALYST - Google Patents

EXHAUST GAS CLEANING CATALYST Download PDF

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Publication number
RU2008133623A
RU2008133623A RU2008133623/15A RU2008133623A RU2008133623A RU 2008133623 A RU2008133623 A RU 2008133623A RU 2008133623/15 A RU2008133623/15 A RU 2008133623/15A RU 2008133623 A RU2008133623 A RU 2008133623A RU 2008133623 A RU2008133623 A RU 2008133623A
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RU
Russia
Prior art keywords
exhaust gas
gas purification
filter base
purification catalyst
alkali metal
Prior art date
Application number
RU2008133623/15A
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Russian (ru)
Inventor
Хитоси КАТО (JP)
Хитоси КАТО
Йосицугу ОГУРА (JP)
Йосицугу ОГУРА
Original Assignee
Тойота Дзидося Кабусики Кайся (Jp)
Тойота Дзидося Кабусики Кайся
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Publication date
Application filed by Тойота Дзидося Кабусики Кайся (Jp), Тойота Дзидося Кабусики Кайся filed Critical Тойота Дзидося Кабусики Кайся (Jp)
Publication of RU2008133623A publication Critical patent/RU2008133623A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • 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
    • 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
    • B01J33/00—Protection of catalysts, e.g. by coating
    • 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
    • B01J37/0242—Coating followed by impregnation
    • 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
    • B01J37/0244—Coatings comprising several layers
    • 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
    • B01J37/0248—Coatings comprising impregnated particles

Abstract

1. Катализатор очистки выхлопного газа, включающий: основание фильтра, имеющее структуру пристеночного потока, основание фильтра, включающее входные ячейки, закупоренные с нижней стороны по отношению к потоку выхлопного газа, выходные ячейки, расположенные рядом с входными ячейками и закупоренные с верхней стороны по отношению к потоку выхлопного газа, и пористые разделительные перегородки, отделяющие входные и выходные ячейки друг от друга и имеющие множество пор, и ! слой катализатора, сформированного на разделительных перегородках ячейки, ! где слой катализатора содержит пористый оксид, благородный металл, нанесенный на пористый оксид, и щелочной металл, нанесенный на пористый оксид в количестве 0,6 моль/л или более основания фильтра, ! где слой катализатора окисляет материал твердых частиц, который, главным образом, содержит углерод и захватывается основанием фильтра в низкотемпературной области 300°С или ниже. ! 2. Катализатор очистки выхлопного газа по п.1, где нанесенное количество щелочного металла составляет 2 моля/л или меньше на основания фильтра. ! 3. Катализатор очистки выхлопного газа по п.1, где щелочной металл представляет собой калий. ! 4. Катализатор очистки выхлопного газа по п.1, дополнительно содержащий защитный слой, сформированный между основанием фильтра и слоем катализатора, и изготовленный из оксида, способного вступать в реакцию с щелочным металлом. ! 5. Катализатор очистки выхлопного газа по п.4, где защитный слой имеет толщину от 0,001 до 5 мкм.1. An exhaust gas purification catalyst comprising: a filter base having a wall flow structure, a filter base including inlet cells clogged on the lower side with respect to the exhaust gas flow, outlet cells located near the inlet cells and clogged on the upper side with respect to to the exhaust gas flow, and porous dividing walls separating the inlet and outlet cells from each other and having many pores, and! the catalyst layer formed on the cell dividing walls! where the catalyst layer contains a porous oxide, a noble metal supported on a porous oxide, and an alkali metal supported on a porous oxide in an amount of 0.6 mol / L or more of the filter base,! where the catalyst bed oxidizes the particulate material, which mainly contains carbon and is captured by the filter base in a low temperature region of 300 ° C or below. ! 2. An exhaust gas purification catalyst according to claim 1, wherein the applied amount of alkali metal is 2 mol / L or less on the filter base. ! 3. An exhaust gas purification catalyst according to claim 1, wherein the alkali metal is potassium. ! 4. The exhaust gas purification catalyst of claim 1, further comprising a protective layer formed between the filter base and the catalyst layer and made of an oxide reactive with an alkali metal. ! 5. An exhaust gas purification catalyst according to claim 4, wherein the protective layer has a thickness of 0.001 to 5 microns.

Claims (5)

1. Катализатор очистки выхлопного газа, включающий: основание фильтра, имеющее структуру пристеночного потока, основание фильтра, включающее входные ячейки, закупоренные с нижней стороны по отношению к потоку выхлопного газа, выходные ячейки, расположенные рядом с входными ячейками и закупоренные с верхней стороны по отношению к потоку выхлопного газа, и пористые разделительные перегородки, отделяющие входные и выходные ячейки друг от друга и имеющие множество пор, и1. The exhaust gas purification catalyst, comprising: a filter base having a wall flow structure, a filter base including inlet cells sealed from the bottom side with respect to the exhaust gas stream, outlet cells located adjacent to the inlet cells and sealed from the top side with respect to to the exhaust gas flow, and porous dividing walls separating the input and output cells from each other and having many pores, and слой катализатора, сформированного на разделительных перегородках ячейки,a catalyst layer formed on the dividing walls of the cell, где слой катализатора содержит пористый оксид, благородный металл, нанесенный на пористый оксид, и щелочной металл, нанесенный на пористый оксид в количестве 0,6 моль/л или более основания фильтра,where the catalyst layer contains a porous oxide, a noble metal deposited on a porous oxide, and an alkali metal supported on a porous oxide in an amount of 0.6 mol / l or more of a filter base, где слой катализатора окисляет материал твердых частиц, который, главным образом, содержит углерод и захватывается основанием фильтра в низкотемпературной области 300°С или ниже.where the catalyst layer oxidizes particulate material, which mainly contains carbon and is captured by the base of the filter in the low temperature region of 300 ° C or lower. 2. Катализатор очистки выхлопного газа по п.1, где нанесенное количество щелочного металла составляет 2 моля/л или меньше на основания фильтра.2. The exhaust gas purification catalyst according to claim 1, wherein the applied amount of alkali metal is 2 mol / L or less at the base of the filter. 3. Катализатор очистки выхлопного газа по п.1, где щелочной металл представляет собой калий.3. The exhaust gas purification catalyst according to claim 1, wherein the alkali metal is potassium. 4. Катализатор очистки выхлопного газа по п.1, дополнительно содержащий защитный слой, сформированный между основанием фильтра и слоем катализатора, и изготовленный из оксида, способного вступать в реакцию с щелочным металлом.4. The exhaust gas purification catalyst according to claim 1, further comprising a protective layer formed between the filter base and the catalyst layer and made of an oxide capable of reacting with an alkali metal. 5. Катализатор очистки выхлопного газа по п.4, где защитный слой имеет толщину от 0,001 до 5 мкм. 5. The exhaust gas purification catalyst according to claim 4, where the protective layer has a thickness of from 0.001 to 5 μm.
RU2008133623/15A 2006-01-17 2007-01-15 EXHAUST GAS CLEANING CATALYST RU2008133623A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006008894A JP2007190459A (en) 2006-01-17 2006-01-17 Catalyst for pm purification
JP2006-008894 2006-01-17

Publications (1)

Publication Number Publication Date
RU2008133623A true RU2008133623A (en) 2010-02-27

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ID=38016781

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2008133623/15A RU2008133623A (en) 2006-01-17 2007-01-15 EXHAUST GAS CLEANING CATALYST

Country Status (8)

Country Link
EP (1) EP1979070A1 (en)
JP (1) JP2007190459A (en)
KR (1) KR20080078894A (en)
CN (1) CN101374586A (en)
BR (1) BRPI0706869A2 (en)
CA (1) CA2635082A1 (en)
RU (1) RU2008133623A (en)
WO (1) WO2007083779A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039684A1 (en) * 2008-08-26 2010-03-04 Schott Ag Thermocatalytic coating
JP6581934B2 (en) * 2016-03-24 2019-09-25 日本碍子株式会社 Honeycomb filter
US10981113B2 (en) 2017-09-21 2021-04-20 Cataler Corporation Exhaust gas purification catalyst body
JP6529639B1 (en) * 2018-05-17 2019-06-12 エヌ・イーケムキャット株式会社 Method of manufacturing exhaust gas purification catalyst
CN110201666B (en) * 2019-06-20 2022-01-25 中自环保科技股份有限公司 Gasoline engine particle trapping catalyst and preparation method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4548968B2 (en) * 2000-06-05 2010-09-22 株式会社日本自動車部品総合研究所 Ceramic support and ceramic catalyst body
US20040043898A1 (en) * 2000-09-08 2004-03-04 Naomi Noda Method for producing catalyst body and carrier having alumina carried thereon
JP3748202B2 (en) * 2000-09-26 2006-02-22 トヨタ自動車株式会社 Exhaust gas purification catalyst
JP2002282702A (en) * 2001-01-19 2002-10-02 Ngk Insulators Ltd Catalytic body
JP3855777B2 (en) * 2002-01-23 2006-12-13 トヨタ自動車株式会社 Particulate filter for internal combustion engine
JP4228278B2 (en) * 2002-03-19 2009-02-25 トヨタ自動車株式会社 Exhaust gas purification catalyst
JP3933015B2 (en) * 2002-09-03 2007-06-20 三菱自動車工業株式会社 Exhaust gas purification device for internal combustion engine
JP4567285B2 (en) * 2002-11-22 2010-10-20 日本碍子株式会社 Exhaust gas purification catalyst body
JP2004202427A (en) * 2002-12-26 2004-07-22 Toyota Motor Corp Filter catalyst for exhaust gas purification

Also Published As

Publication number Publication date
KR20080078894A (en) 2008-08-28
CA2635082A1 (en) 2007-07-26
EP1979070A1 (en) 2008-10-15
BRPI0706869A2 (en) 2011-04-12
WO2007083779A1 (en) 2007-07-26
CN101374586A (en) 2009-02-25
JP2007190459A (en) 2007-08-02

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Effective date: 20100316