WO2008136529A1 - 排ガス浄化用触媒及びそれに用いられる酸性酸化物担持アルミナの製造方法 - Google Patents
排ガス浄化用触媒及びそれに用いられる酸性酸化物担持アルミナの製造方法 Download PDFInfo
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- WO2008136529A1 WO2008136529A1 PCT/JP2008/058547 JP2008058547W WO2008136529A1 WO 2008136529 A1 WO2008136529 A1 WO 2008136529A1 JP 2008058547 W JP2008058547 W JP 2008058547W WO 2008136529 A1 WO2008136529 A1 WO 2008136529A1
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- alumina
- catalyst
- acidic oxide
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- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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- 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
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- 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
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/652—Chromium, molybdenum or tungsten
- B01J23/6527—Tungsten
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0207—Pretreatment of the support
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0209—Impregnation involving a reaction between the support and a fluid
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- 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
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- 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
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- 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
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
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- B01D2255/20707—Titanium
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- B01D2255/2092—Aluminium
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
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- Combustion & Propulsion (AREA)
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- Environmental & Geological Engineering (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
アルミナより酸性度が高い金属酸化物からなる酸性酸化物がアルミナに選択的に担持されてなる酸性酸化物担持アルミナを担体中に含む触媒とした。酸性酸化物担持アルミナにおけるアルミナの塩基点が酸性酸化物によって中和状態にある。そのためSO3 あるいはSO4 の吸着が抑制され、触媒上に蓄積されるのが抑制されるため、ストイキあるいはリッチ雰囲気におけるH2S の生成が抑制され、三元活性を従来と同等に維持しつつH2S の排出を抑制することができる。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007123613A JP2008279319A (ja) | 2007-05-08 | 2007-05-08 | 排ガス浄化用触媒及びそれに用いられる酸性酸化物担持アルミナの製造方法 |
JP2007-123613 | 2007-05-08 |
Publications (1)
Publication Number | Publication Date |
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WO2008136529A1 true WO2008136529A1 (ja) | 2008-11-13 |
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PCT/JP2008/058547 WO2008136529A1 (ja) | 2007-05-08 | 2008-05-08 | 排ガス浄化用触媒及びそれに用いられる酸性酸化物担持アルミナの製造方法 |
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JP (1) | JP2008279319A (ja) |
WO (1) | WO2008136529A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012059423A1 (de) * | 2010-11-03 | 2012-05-10 | Süd-Chemie AG | Ammoniak-oxidationskatalysator mit geringer n2o nebenproduktbildung |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101068112B1 (ko) * | 2010-02-22 | 2011-09-27 | 한국에너지기술연구원 | 텅스텐 옥사이드 알루미나 촉매의 제조 방법, 텅스텐 옥사이드 알루미나 촉매 및 이 촉매를 이용한 유리지방산이 포함되어 있는 폐식용유로부터 유리지방산을 제거하는 방법 |
JP7307710B2 (ja) * | 2020-09-18 | 2023-07-12 | 株式会社豊田中央研究所 | コアシェル型酸素吸放出材料、その製造方法、それを用いた排ガス浄化用触媒及び排ガス浄化方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS621737U (ja) * | 1985-06-21 | 1987-01-08 | ||
JP2003305363A (ja) * | 2002-02-15 | 2003-10-28 | Toyota Central Res & Dev Lab Inc | 触媒担体及び排ガス浄化用触媒 |
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2007
- 2007-05-08 JP JP2007123613A patent/JP2008279319A/ja not_active Withdrawn
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2008
- 2008-05-08 WO PCT/JP2008/058547 patent/WO2008136529A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS621737U (ja) * | 1985-06-21 | 1987-01-08 | ||
JP2003305363A (ja) * | 2002-02-15 | 2003-10-28 | Toyota Central Res & Dev Lab Inc | 触媒担体及び排ガス浄化用触媒 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012059423A1 (de) * | 2010-11-03 | 2012-05-10 | Süd-Chemie AG | Ammoniak-oxidationskatalysator mit geringer n2o nebenproduktbildung |
US9573097B2 (en) | 2010-11-03 | 2017-02-21 | Clariant Produkte (Deutschland) Gmbh | Ammonia oxidation catalyst having low N2O by-product formation |
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Publication number | Publication date |
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JP2008279319A (ja) | 2008-11-20 |
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