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 PDF

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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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WIPO (PCT)
Prior art keywords
alumina
catalyst
acidic oxide
supported
production
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PCT/JP2008/058547
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English (en)
French (fr)
Inventor
Masanori Yamato
Takaaki Kanazawa
Kazuhiro Yoshimoto
Masaru Ishii
Michihiko Takeuchi
Yuuji Matuhisa
Tadashi Suzuki
Satoru Kato
Naoki Takahashi
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Cataler Corporation
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Application filed by Toyota Jidosha Kabushiki Kaisha, Cataler Corporation filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2008136529A1 publication Critical patent/WO2008136529A1/ja

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    • 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
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • 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
    • B01D53/9445—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
    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • B01J37/0207—Pretreatment of the support
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    • B01J37/02—Impregnation, coating or precipitation
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    • B01J37/0242—Coating followed by impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J37/02—Impregnation, coating or precipitation
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • 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
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • 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。
PCT/JP2008/058547 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 WO2008136529A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-123613 2007-05-08
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

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WO2008136529A1 true WO2008136529A1 (ja) 2008-11-13

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Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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JP2008279319A (ja) 2008-11-20

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