WO2000013772A1 - Composition de catalyseur pour la decomposition de l'ozone - Google Patents

Composition de catalyseur pour la decomposition de l'ozone Download PDF

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Publication number
WO2000013772A1
WO2000013772A1 PCT/US1999/017195 US9917195W WO0013772A1 WO 2000013772 A1 WO2000013772 A1 WO 2000013772A1 US 9917195 W US9917195 W US 9917195W WO 0013772 A1 WO0013772 A1 WO 0013772A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
ozone
catalytic material
catalyst composition
oxide
Prior art date
Application number
PCT/US1999/017195
Other languages
English (en)
Inventor
Michel Deeba
Original Assignee
Engelhard Corporation
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 Engelhard Corporation filed Critical Engelhard Corporation
Priority to AU53260/99A priority Critical patent/AU5326099A/en
Publication of WO2000013772A1 publication Critical patent/WO2000013772A1/fr

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Classifications

    • 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
    • B01J23/656—Manganese, technetium or rhenium
    • B01J23/6562—Manganese
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • B01D53/8675—Ozone
    • 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
    • B01J23/66—Silver or gold
    • B01J23/68—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/688—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with manganese, technetium or rhenium
    • 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

Definitions

  • the present invention is directed to a catalyst composition for decomposing
  • the catalyst composition includes at least two
  • catalytic material different from the first catalytic material, which is specifically
  • catalyst composition of the present invention provides enhanced ozone
  • Ozone treating catalyst compositions are well known in the art. Such as
  • compositions include manganese oxides, especially manganese dioxide alone or in
  • the present invention is generally directed to a catalyst composition for
  • ozone comprises:
  • second catalytic material which is selected from platinum and/or rhodium containing
  • catalyst composition can be used on a variety of substrates including those
  • radiators associated with automotive vehicles
  • heat exchangers such as air
  • the present invention is generally directed to a catalyst composition
  • composition of the present invention is especially effective in decomposing ozone under high humidity conditions even when the decomposition is conducted at
  • the present invention is a relatively low temperatures such as ambient temperatures.
  • high humidity shall mean an atmosphere whose
  • first catalytic material suitable for decomposing ozone which includes manganese
  • a refractory support e.g. alumina
  • a second refractory support e.g. alumina
  • first coating shall mean that one of the catalytic
  • the "second coating” shall mean
  • the second catalytic material is likewise placed on or within the substrate.
  • the first and second coatings may, but not necessarily, form separate and distinct layers.
  • first and second coatings may constitute a single layer on or within the first and second coatings
  • first coating include manganese compounds, including oxides such as Mn 2 O 3 and
  • MnO 2 with a preferred composition comprising ⁇ -MnO 2 , and cryptomelane being
  • the manganese compounds e.g. manganese oxides
  • the manganese compounds may be any manganese compounds (e.g. manganese oxides).
  • MnO 2 and CuO include a mixture of MnO 2 and CuO; and ceria; MnO 2 , ceria and CuO and the like.
  • compositions comprise hopcalite which contains the
  • manganese compounds including manganese dioxide, non stoichiometric
  • manganese dioxide e.g., XMnO (1 5 . 20)
  • XMn 2 O 3 wherein X is a metal ion
  • an alkali metal or alkaline earth metal e.g. sodium, potassium and
  • Preferred manganese dioxides which are nominally referred to as MnO 2
  • Useful and preferred manganese dioxides are alpha-manganese dioxides
  • manganese dioxides are disclosed in U.S. Patent No. 5,340,562 to O'Young, et al.;
  • the preferred alpha-manganese dioxide is
  • the manganese dioxides useful in the present invention preferably have a
  • composition preferably comprises a binder of the type described below
  • binders being polymeric binders or inorganic binders such as
  • zirconium oxide zirconium oxide, silica or alumina sol.
  • compositions comprising the cryptomelane
  • alpha manganese oxide which also contain a polymeric binder can result in
  • the preferred cryptomelane manganese dioxide has a crystalline size ranging
  • the preferred cryptomelane can be made in accordance with methods
  • the cryptomelane can be made by reacting a manganese salt including salts
  • MnCI 2 selected from the group consisting MnCI 2 , Mn(NO 3 ) 2 , MnSO 4 and Mn (CH 3 COO) 2
  • Cryptomelane is made using potassium
  • hollandite is made using barium permanganate
  • coronadite is made
  • alpha-manganese dioxide useful in the present invention can be any alpha-manganese dioxide useful in the present invention.
  • the preferred cryptomelane is "clean" or
  • the inorganic anions such as sulfates can be washed away with the aqueous
  • the cryptomelane is a "clean" alpha manganese dioxide.
  • the cryptomelane can be washed at
  • the "clean" alpha manganese dioxide is characterized as having an IR spectrum as disclosed in
  • the acidic manganese salt solution preferably has a pH of
  • the mixture forms a slurry which is stirred at a temperature range of from
  • the resulting cryptomelane crystals have a surface area of from 75°C to 200°C.
  • Another catalytic material for the formation of the first coating is a palladium-
  • composition containing palladium on the support comprises from about
  • metal metal and not oxide
  • the support metal (metal and not oxide)
  • the second coating contains a second catalytic material selected from
  • Suitable examples of platinum and rhodium containing materials include
  • platinum and rhodium themselves or in the form of salts (e.g. nitrates, sulfates and
  • layer is generally from about 0.01 to 1.0 g/in 3 , preferably from about 0.1 to 0.3 g/in 3 .
  • the amount of the second catalytic material is generally from about 0.1 to
  • the first and second coatings may be applied by a variety of methods known
  • Particularly preferred methods include coating and post dipping. Coating is
  • the second catalytic material is formed into a
  • the catalyst composition of the present invention can be fabricated by placing
  • Suitable substrates include alumina,
  • the first coating is metal, ceramic, automotive surfaces such as radiators and the like.
  • the second coating is coating from a slurry.
  • the second coating can be applied directly over the first
  • the second coating can be applied to the first coating in the same manner as the first coating is applied to the substrate, but preferably by post dipping followed
  • the final product may
  • a ceramic substrate was coated with a manganese oxide slurry by placing the
  • the ceramic substrate was coated only with manganese oxide and then
  • the catalyst was coated to a concentration of 5% palladium on alumina.
  • the catalyst was coated to a concentration of 5% palladium on alumina.
  • the catalytic material was dried for one hour at 100°C and calcined at 500°C.
  • Comparative samples C-3 and C-4 were prepared in the same manner as
  • Example 2 was repeated to prepare samples S-5 and S-6 to replace the
  • sample C-3 and C-4 see Table 2.
  • samples S-7 and S-8 employing silver oxide as a coating over the coating of palladium.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)

Abstract

L'invention concerne une composition de catalyseur pour décomposer l'ozone. Dans cette composition, au moins une première couche d'un premier matériau catalytique est placée sur un substrat. Cette couche permet de décomposer l'ozone et comprend un matériau à base d'oxyde de manganèse ou de palladium. En outre, dans cette composition, au moins une deuxième couche d'un matériau catalytique sélectionné parmi des matériaux à base de platine et de rhodium et d'oxyde d'argent est placé sur la première couche. Ce système permet d'améliorer la vitesse de décomposition de l'ozone, particulièrement, dans des conditions de fonctionnement humides et/ou à faible température.
PCT/US1999/017195 1998-09-08 1999-07-29 Composition de catalyseur pour la decomposition de l'ozone WO2000013772A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53260/99A AU5326099A (en) 1998-09-08 1999-07-29 Catalyst composition for the decomposition of ozone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14933198A 1998-09-08 1998-09-08
US09/149,331 1998-09-08

Publications (1)

Publication Number Publication Date
WO2000013772A1 true WO2000013772A1 (fr) 2000-03-16

Family

ID=22529798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/017195 WO2000013772A1 (fr) 1998-09-08 1999-07-29 Composition de catalyseur pour la decomposition de l'ozone

Country Status (2)

Country Link
AU (1) AU5326099A (fr)
WO (1) WO2000013772A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6699529B2 (en) 2002-05-20 2004-03-02 Engelhard Corporation Method for coating vehicular radiators with ozone depleting slurry catalyst
CN104383940A (zh) * 2014-11-14 2015-03-04 上海应用技术学院 一种Mn3O4/CuO/Ag三元复合催化剂及制备方法
US9283547B2 (en) 2013-03-14 2016-03-15 Basf Corporation Catalytic article with segregated washcoat and methods of making same
DE102016119905A1 (de) * 2016-10-19 2018-04-19 Avl Emission Test Systems Gmbh Vorrichtung zur Zersetzung von in einem Probengasstrom enthaltenem Ozon aus einer Abgasanalyseeinheit
CN113019457A (zh) * 2021-03-12 2021-06-25 郑州大学 全湿度范围高效降解臭氧的Mn-MOF催化剂及其膜材料的制备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462928A1 (fr) * 1979-08-08 1981-02-20 Johnson Matthey Co Ltd Procede d'elimination de l'ozone d'un melange de gaz
DE3003793A1 (de) * 1980-02-02 1981-08-13 Benckiser Gmbh Joh A Katalysatoren zur ozonvernichtung in ozonhaltiger luft und ozonhaltigen gasen und ihre herstellung
JPS57136941A (en) * 1981-02-17 1982-08-24 Fuji Electric Corp Res & Dev Ltd Ozone decomposing catalyst
JPS61178402A (ja) * 1985-02-04 1986-08-11 Tsutomu Kagitani オゾンの分解処理法
DE19606863A1 (de) * 1995-02-24 1996-08-29 Mazda Motor Katalysator zur Abgasreinigung
WO1998005412A1 (fr) * 1996-08-07 1998-02-12 Goal Line Environmental Technologies Elimination de polluant atmospherique dans des espaces fermes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462928A1 (fr) * 1979-08-08 1981-02-20 Johnson Matthey Co Ltd Procede d'elimination de l'ozone d'un melange de gaz
DE3003793A1 (de) * 1980-02-02 1981-08-13 Benckiser Gmbh Joh A Katalysatoren zur ozonvernichtung in ozonhaltiger luft und ozonhaltigen gasen und ihre herstellung
JPS57136941A (en) * 1981-02-17 1982-08-24 Fuji Electric Corp Res & Dev Ltd Ozone decomposing catalyst
JPS61178402A (ja) * 1985-02-04 1986-08-11 Tsutomu Kagitani オゾンの分解処理法
DE19606863A1 (de) * 1995-02-24 1996-08-29 Mazda Motor Katalysator zur Abgasreinigung
WO1998005412A1 (fr) * 1996-08-07 1998-02-12 Goal Line Environmental Technologies Elimination de polluant atmospherique dans des espaces fermes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198316, Derwent World Patents Index; Class E36, AN 1983-37431K, XP002119057 *
DATABASE WPI Section Ch Week 198638, Derwent World Patents Index; Class E36, AN 1986-249547, XP002119068 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6699529B2 (en) 2002-05-20 2004-03-02 Engelhard Corporation Method for coating vehicular radiators with ozone depleting slurry catalyst
US9283547B2 (en) 2013-03-14 2016-03-15 Basf Corporation Catalytic article with segregated washcoat and methods of making same
CN104383940A (zh) * 2014-11-14 2015-03-04 上海应用技术学院 一种Mn3O4/CuO/Ag三元复合催化剂及制备方法
DE102016119905A1 (de) * 2016-10-19 2018-04-19 Avl Emission Test Systems Gmbh Vorrichtung zur Zersetzung von in einem Probengasstrom enthaltenem Ozon aus einer Abgasanalyseeinheit
CN113019457A (zh) * 2021-03-12 2021-06-25 郑州大学 全湿度范围高效降解臭氧的Mn-MOF催化剂及其膜材料的制备

Also Published As

Publication number Publication date
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