JPWO2019186121A5 - - Google Patents

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JPWO2019186121A5
JPWO2019186121A5 JP2020548782A JP2020548782A JPWO2019186121A5 JP WO2019186121 A5 JPWO2019186121 A5 JP WO2019186121A5 JP 2020548782 A JP2020548782 A JP 2020548782A JP 2020548782 A JP2020548782 A JP 2020548782A JP WO2019186121 A5 JPWO2019186121 A5 JP WO2019186121A5
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layer
catalytic article
article according
substrate
flue gas
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JP2021517508A (en
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Priority claimed from GBGB1805312.4A external-priority patent/GB201805312D0/en
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更なる態様によれば、本発明の触媒物品による触媒物品の製造方法が提供され、該方法は、銅、鉄、セリウム、マグネシウム、若しくはジルコニウム、又はこれらのうちのいずれか２つ以上の混合物の水性塩溶液を用いて、押出バナジウム含有ＳＣＲ触媒材料で形成された触媒活性基材の１つ以上のチャネルの第１の表面を含浸させることと、含浸させた基材を乾燥させることと、第１の表面に粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを適用することと、を含み、該粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを含む第１の層を前記第１の表面に配置させる。 According to a further aspect, there is provided a method of making a catalytic article with the catalytic article of the present invention , comprising: impregnating a first surface of one or more channels of a catalytically active substrate formed of an extruded vanadium-containing SCR catalyst material with an aqueous salt solution ; drying the impregnated substrate; applying to the first surface a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material , said particulate metal oxide. A first layer comprising a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a support material is disposed on said first surface.

疑義を回避するために、本明細書に確認された全ての文書の内容全体が、参照により本明細書中に組み込まれる。
本明細書の開示内容は、以下の態様を含み得る。
（態様１）
燃焼排ガスの流れを処理するための触媒物品であって、前記物品が、
その軸方向長さに沿って延びる１つ以上のチャネルを含む触媒活性基材であって、前記チャネルを通って、使用中に燃焼排ガスが流れ、前記１つ以上のチャネルが、燃焼排ガスの流れに接触するための第１の表面を有する、触媒活性基材を含み、
前記基材が、押出バナジウム含有ＳＣＲ触媒材料から形成され、
第１の層が、前記第１の表面の少なくとも一部分上に配置され、前記第１の層が、粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを含み、
ＳＣＲ触媒組成物のウォッシュコートを含む層が、前記１つ以上のチャネルの表面上に配置され、
前記第１の層が配置される前記第１の表面の少なくとも一部が、銅、鉄、セリウム、若しくはジルコニウムの化合物、又はこれらのうちのいずれか２つ以上の混合物を含む、触媒物品。
（態様２）
前記化合物が鉄化合物である、態様１に記載の触媒物品。
（態様３）
前記ＳＣＲ触媒組成物のウォッシュコートを含む前記層が、前記第１の表面の少なくとも一部分上に配置された前記第１の層であり、前記第１の層が、前記ＳＣＲ触媒組成物とアンモニアスリップ触媒組成物との混合物である、態様１又は２に記載の触媒物品。
（態様４）
前記ＳＣＲ触媒組成物のウォッシュコートを含む前記層が、前記第１の層の少なくとも一部分上に配置された第２の層である、態様１又は２に記載の触媒物品。
（態様５）
前記基材がハニカムフロースルーモノリス基材である、態様１、２、３又は４に記載の触媒物品。
（態様６）
前記粒子状金属酸化物担体材料が、アルミナ、シリカ－チタニア混合酸化物、Ｃｅ－Ｚｒ混合酸化物、セリア、チタニア、シリカ、ジルコニア、及びゼオライト、又はこれらのいずれか２つ以上の混合物からなる群から選択される、態様１～５のいずれか一項に記載の触媒物品。
（態様７）
前記基材が、１～３重量％、好ましくは１．５～２．５重量％の酸化バナジウムを含む、態様１～６のいずれか一項に記載の触媒物品。
（態様８）
前記第１の層が、０．０５～０．５重量％の前記白金族金属を含む、態様１～７のいずれか一項に記載の触媒物品。
（態様９）
前記白金族金属が、Ｐｔ又はＰｔとＰｄとの組み合わせである、態様１～８のいずれか一項に記載の触媒物品。
（態様１０）
前記第１の層が、前記基材の前記軸方向長さの最大５０％、好ましくは前記軸方向長さの１０～４０％を被覆し、好ましくは前記物品の端部から延びている、態様１～９のいずれか一項に記載の触媒物品。
（態様１１）
前記第２の層が、前記基材の前記軸方向長さの少なくとも５０％、好ましくは前記軸方向長さの１００％を被覆する、態様４に付随する場合の態様１０に記載の触媒物品。
（態様１２）
前記第１の層が、前記基材の前記軸方向長さの少なくとも５０％、好ましくは前記軸方向長さの１００％を被覆する、態様１～９のいずれか一項に記載の触媒物品。
（態様１３）
前記第２の層の前記ＳＣＲ触媒組成物が、銅促進ゼオライト、鉄促進ゼオライト、又はこれらの組み合わせを含む、態様１～１２のいずれか一項に記載の触媒物品。
（態様１４）
前記ＳＣＲ触媒が、骨格型ＡＥＩ、ＡＦＸ、ＣＨＡ、ＤＤＲ、ＥＲＩ、ＩＴＥ、ＬＥＶ、ＬＴＡ、ＳＴＩ、又はＳＦＷを有する、銅又は鉄促進小細孔ゼオライトである、態様１３に記載の触媒物品。
（態様１５）
前記第２の層が、２００℃で測定したときに、前記第２の層１ｇ当たり最大０．１ｇのアンモニア吸蔵容量を有する、態様１～１４のいずれか一項に記載の触媒物品。
（態様１６）
前記第２の層が、面積で前記第１の層の１００％を被覆する、態様４、及び態様４に従属する場合の態様１～１５のいずれか一項に記載の触媒物品。
（態様１７）
燃焼排ガスの流れを処理するための排出処理システムであって、態様１～１６のいずれか一項に記載の触媒物品と流体連通する燃焼排ガス源と、前記物品の上流に配置された窒素系還元剤源と、を含む、排出処理システム。
（態様１８）
前記第１の層が、前記基材の前記軸方向長さの最大５０％を被覆し、前記物品の下流端から延びるように設けられている、態様１７に記載の排出処理システム。
（態様１９）
前記燃焼排ガス源がディーゼルエンジンである、態様１７又は１８に記載の排出処理システム。
（態様２０）
燃焼排ガスの流れを処理するための方法であって、窒素系還元剤の存在下で、燃焼排ガスの流れを、態様１～１６のいずれか一項に記載の触媒物品と接触させることを含む、方法。
（態様２１）
態様１～１４のいずれか一項に記載の触媒物品の製造方法であって、前記方法が、銅、鉄、セリウム、マグネシウム、若しくはジルコニウム、又はこれらのうちのいずれか２つ以上の混合物の水性塩溶液を用いて、押出バナジウム含有ＳＣＲ触媒材料で形成された触媒活性基材の１つ以上のチャネルの第１の表面を含浸させることと、前記含浸させた基材を乾燥させることと、前記第１の表面に粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを適用することと、を含み、前記粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを含む第１の層を前記第１の表面に配置させる、方法。
（態様２２）
態様１～１４のいずれか一項に記載の触媒物品の製造方法であって、前記方法が、バナジウム含有ＳＣＲ触媒材料と、永久結合剤と、銅、鉄、セリウム、マグネシウム若しくはジルコニウムの化合物又はこれらのうちのいずれか２つ以上の混合物と、を含む押出可能なペーストを形成することと、前記ペーストを、その軸方向長さに沿って延びる１つ以上のチャネルを含むハニカム形態に押し出すことであって、前記チャネルを通って、使用中に燃焼排ガスが流れ、前記１つ以上のチャネルが、燃焼排ガスの流れに接触するための第１の表面を有する、押し出すことと、前記押し出されたハニカム形態ペーストを乾燥及び焼成することと、前記第１の表面上の粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを適用することと、を含む、方法。 For the avoidance of doubt, the entire contents of all documents identified herein are incorporated herein by reference.
The disclosure content of this specification may include the following aspects.
(Aspect 1)
A catalytic article for treating a flue gas stream, said article comprising:
A catalytically active substrate comprising one or more channels extending along its axial length, said channels through which flue gas flows in use, said one or more channels through which flue gas flows comprising a catalytically active substrate having a first surface for contacting the
wherein the substrate is formed from an extruded vanadium-containing SCR catalyst material;
An ammonia slip catalyst having a first layer disposed on at least a portion of said first surface, said first layer comprising one or more platinum group metals supported on a particulate metal oxide support material. comprising a washcoat of the composition;
a layer comprising a washcoat of an SCR catalyst composition is disposed on the surface of the one or more channels;
A catalytic article, wherein at least a portion of said first surface on which said first layer is disposed comprises a compound of copper, iron, cerium, or zirconium, or a mixture of any two or more thereof.
(Aspect 2)
A catalytic article according to aspect 1, wherein said compound is an iron compound.
(Aspect 3)
The layer comprising a washcoat of the SCR catalyst composition is the first layer disposed on at least a portion of the first surface, the first layer comprising the SCR catalyst composition and an ammonia slip. 3. A catalytic article according to aspect 1 or 2 in admixture with a catalytic composition.
(Aspect 4)
3. A catalytic article according to aspects 1 or 2, wherein said layer comprising a washcoat of said SCR catalyst composition is a second layer disposed on at least a portion of said first layer.
(Aspect 5)
5. The catalytic article of aspect 1, 2, 3 or 4, wherein the substrate is a honeycomb flow-through monolith substrate.
(Aspect 6)
wherein said particulate metal oxide support material is alumina, silica-titania mixed oxide, Ce--Zr mixed oxide, ceria, titania, silica, zirconia, and zeolite, or mixtures of any two or more thereof The catalytic article according to any one of aspects 1-5, selected from:
(Aspect 7)
7. A catalytic article according to any one of aspects 1-6, wherein the substrate comprises 1-3 wt%, preferably 1.5-2.5 wt% vanadium oxide.
(Aspect 8)
8. The catalytic article of any one of aspects 1-7, wherein the first layer comprises 0.05 to 0.5 wt% of the platinum group metal.
(Aspect 9)
9. The catalytic article of any one of aspects 1-8, wherein the platinum group metal is Pt or a combination of Pt and Pd.
(Mode 10)
Aspect wherein said first layer covers up to 50% of said axial length of said substrate, preferably 10-40% of said axial length, and preferably extends from the edge of said article 10. The catalytic article according to any one of 1-9.
(Aspect 11)
11. The catalytic article of aspect 10, when concomitant to aspect 4, wherein said second layer covers at least 50% of said axial length of said substrate, preferably 100% of said axial length.
(Aspect 12)
A catalytic article according to any one of aspects 1-9, wherein said first layer covers at least 50% of said axial length of said substrate, preferably 100% of said axial length.
(Aspect 13)
13. The catalytic article of any one of aspects 1-12, wherein the SCR catalyst composition of the second layer comprises a copper-promoted zeolite, an iron-promoted zeolite, or a combination thereof.
(Aspect 14)
14. The catalytic article of aspect 13, wherein the SCR catalyst is a copper or iron promoted small pore zeolite having a framework type AEI, AFX, CHA, DDR, ERI, ITE, LEV, LTA, STI, or SFW.
(Aspect 15)
15. The catalytic article of any one of aspects 1-14, wherein said second layer has a maximum ammonia storage capacity of 0.1 g/g of said second layer when measured at 200°C.
(Aspect 16)
16. The catalytic article of any one of aspects 4, and when dependent on aspect 4, wherein said second layer covers 100% of said first layer by area.
(Aspect 17)
An emissions treatment system for treating a flue gas stream, comprising a flue gas source in fluid communication with the catalytic article of any one of aspects 1-16, and a nitrogen-based reduction positioned upstream of the article. and an effluent treatment system.
(Aspect 18)
18. The emission treatment system of aspect 17, wherein the first layer covers up to 50% of the axial length of the substrate and extends from a downstream end of the article.
(Aspect 19)
19. An emission treatment system according to aspect 17 or 18, wherein the flue gas source is a diesel engine.
(Aspect 20)
17. A method for treating a flue gas stream, comprising contacting the flue gas stream with a catalytic article according to any one of aspects 1-16 in the presence of a nitrogen-based reducing agent, Method.
(Aspect 21)
15. A method of making a catalytic article according to any one of aspects 1-14, wherein said method comprises aqueous impregnating a first surface of one or more channels of a catalytically active substrate formed of an extruded vanadium-containing SCR catalyst material with a salt solution; drying the impregnated substrate; applying to a first surface a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material, said particulate metal oxide support. disposing on said first surface a first layer comprising a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a material.
(Aspect 22)
15. A method of making a catalytic article according to any one of aspects 1-14, said method comprising: vanadium-containing SCR catalyst material; permanent binder; and copper, iron, cerium, magnesium or zirconium compounds or and a mixture of any two or more of; and extruding the paste into a honeycomb form comprising one or more channels extending along its axial length. Extruding and said extruded honeycomb, wherein flue gas flows in use through said channels, said one or more channels having a first surface for contacting said flue gas flow; drying and calcining the form paste and applying a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material on said first surface. and, including, methods.

Claims (23)

燃焼排ガスの流れを処理するための触媒物品であって、前記物品が、
その軸方向長さに沿って延びる１つ以上のチャネルを含む触媒活性基材であって、前記チャネルを通って、使用中に燃焼排ガスが流れ、前記１つ以上のチャネルが、燃焼排ガスの流れに接触するための第１の表面を有する、触媒活性基材を含み、
前記基材が、押出バナジウム含有ＳＣＲ触媒材料から形成され、
第１の層が、前記第１の表面の少なくとも一部分上に配置され、前記第１の層が、粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを含み、
ＳＣＲ触媒組成物のウォッシュコートを含む層が、前記１つ以上のチャネルの表面上に配置され、
前記第１の層が配置される前記第１の表面の少なくとも一部が、遊離銅、遊離鉄、遊離セリウム、若しくは遊離ジルコニウムの化合物、又はこれらのうちのいずれか２つ以上の混合物を含む、触媒物品。 A catalytic article for treating a flue gas stream, said article comprising:
A catalytically active substrate comprising one or more channels extending along its axial length, said channels through which flue gas flows in use, said one or more channels through which flue gas flows comprising a catalytically active substrate having a first surface for contacting the
wherein the substrate is formed from an extruded vanadium-containing SCR catalyst material;
An ammonia slip catalyst having a first layer disposed on at least a portion of said first surface, said first layer comprising one or more platinum group metals supported on a particulate metal oxide support material. comprising a washcoat of the composition;
a layer comprising a washcoat of an SCR catalyst composition is disposed on the surface of the one or more channels;
at least a portion of the first surface on which the first layer is disposed comprises a compound of free copper, free iron, free cerium, or free zirconium, or a mixture of any two or more thereof; catalytic article. 前記化合物が鉄化合物である、請求項１に記載の触媒物品。 2. The catalytic article of claim 1, wherein said compound is an iron compound. 前記ＳＣＲ触媒組成物のウォッシュコートを含む前記層が、前記第１の表面の少なくとも一部分上に配置された前記第１の層であり、前記第１の層が、前記ＳＣＲ触媒組成物とアンモニアスリップ触媒組成物との混合物である、請求項１又は２に記載の触媒物品。 The layer comprising a washcoat of the SCR catalyst composition is the first layer disposed on at least a portion of the first surface, the first layer comprising the SCR catalyst composition and an ammonia slip. 3. A catalytic article according to claim 1 or 2 in admixture with a catalytic composition. 前記ＳＣＲ触媒組成物のウォッシュコートを含む前記層が、前記第１の層の少なくとも一部分上に配置された第２の層である、請求項１又は２に記載の触媒物品。 3. A catalytic article according to claim 1 or 2, wherein said layer comprising a washcoat of said SCR catalyst composition is a second layer disposed on at least a portion of said first layer. 前記基材がハニカムフロースルーモノリス基材である、請求項１、２、３又は４に記載の触媒物品。 5. The catalytic article of claim 1, 2, 3 or 4, wherein said substrate is a honeycomb flow-through monolith substrate. 前記粒子状金属酸化物担体材料が、アルミナ、シリカ－チタニア混合酸化物、Ｃｅ－Ｚｒ混合酸化物、セリア、チタニア、シリカ、ジルコニア、及びゼオライト、又はこれらのいずれか２つ以上の混合物からなる群から選択される、請求項１～５のいずれか一項に記載の触媒物品。 wherein said particulate metal oxide support material is alumina, silica-titania mixed oxide, Ce--Zr mixed oxide, ceria, titania, silica, zirconia, and zeolite, or mixtures of any two or more thereof The catalytic article according to any one of claims 1 to 5, selected from 前記基材が、１～３重量％の酸化バナジウムを含む、請求項１～６のいずれか一項に記載の触媒物品。 A catalytic article according to any preceding claim, wherein the substrate comprises 1-3 % by weight of vanadium oxide. 前記第１の層が、０．０５～０．５重量％の前記白金族金属を含む、請求項１～７のいずれか一項に記載の触媒物品。 A catalytic article according to any one of the preceding claims, wherein said first layer comprises 0.05 to 0.5 wt% of said platinum group metal. 前記白金族金属が、Ｐｔ又はＰｔとＰｄとの組み合わせである、請求項１～８のいずれか一項に記載の触媒物品。 A catalytic article according to any preceding claim, wherein the platinum group metal is Pt or a combination of Pt and Pd. 前記第１の層が、前記基材の前記軸方向長さの最大５０％を被覆する、請求項１～９のいずれか一項に記載の触媒物品。 A catalytic article according to any one of the preceding claims, wherein said first layer covers up to 50 % of said axial length of said substrate. 前記第１の層が、前記物品の端部から延びている、請求項１０に記載の触媒物品。11. The catalytic article of claim 10, wherein said first layer extends from an edge of said article. 前記第２の層が、前記基材の前記軸方向長さの少なくとも５０％を被覆する、請求項４に付随する場合の請求項１０または１１に記載の触媒物品。 12. A catalytic article according to claim 10 or 11 when associated with claim 4, wherein said second layer covers at least 50 % of said axial length of said substrate. 前記第１の層が、前記基材の前記軸方向長さの少なくとも５０％を被覆する、請求項１～９のいずれか一項に記載の触媒物品。 A catalytic article according to any preceding claim, wherein the first layer covers at least 50 % of the axial length of the substrate. 前記第２の層の前記ＳＣＲ触媒組成物が、銅促進ゼオライト、鉄促進ゼオライト、又はこれらの組み合わせを含む、請求項４、及び請求項４に従属する場合の請求項５～１３のいずれか一項に記載の触媒物品。 Claim 4, and any one of claims 5-13 when dependent on claim 4, wherein the SCR catalyst composition of the second layer comprises a copper-promoted zeolite, an iron-promoted zeolite, or a combination thereof. A catalytic article according to any one of claims 1 to 3. 前記ＳＣＲ触媒が、骨格型ＡＥＩ、ＡＦＸ、ＣＨＡ、ＤＤＲ、ＥＲＩ、ＩＴＥ、ＬＥＶ、ＬＴＡ、ＳＴＩ、又はＳＦＷを有する、銅又は鉄促進小細孔ゼオライトである、請求項１４に記載の触媒物品。 15. The catalytic article of claim 14 , wherein the SCR catalyst is a copper or iron promoted small pore zeolite with framework type AEI, AFX, CHA, DDR, ERI, ITE, LEV, LTA, STI, or SFW. 前記第２の層が、２００℃で測定したときに、前記第２の層１ｇ当たり最大０．１ｇのアンモニア吸蔵容量を有する、請求項４、及び請求項４に従属する場合の請求項５～１５のいずれか一項に記載の触媒物品。 Claim 4, and claims 5 when dependent on claim 4, wherein said second layer has an ammonia storage capacity of at most 0.1 g/g of said second layer, measured at 200°C. 16. The catalytic article of any one of Claims 15 . 前記第２の層が、面積で前記第１の層の１００％を被覆する、請求項４、及び請求項４に従属する場合の請求項５～１６のいずれか一項に記載の触媒物品。 A catalytic article according to claim 4, and any one of claims 5 to 16 when dependent on claim 4, wherein said second layer covers 100% of said first layer by area. 燃焼排ガスの流れを処理するための排出処理システムであって、請求項１～１７のいずれか一項に記載の触媒物品と流体連通する燃焼排ガス源と、前記物品の上流に配置された窒素系還元剤源と、を含む、排出処理システム。 An emissions treatment system for treating a flue gas stream, comprising a flue gas source in fluid communication with a catalytic article of any one of claims 1-17 , and a nitrogen system positioned upstream of said article. an emission treatment system, comprising: a reductant source; 前記第１の層が、前記基材の前記軸方向長さの最大５０％を被覆し、前記物品の下流端から延びるように設けられている、請求項１８に記載の排出処理システム。 19. The emission treatment system of claim 18 , wherein the first layer covers up to 50% of the axial length of the substrate and extends from the downstream end of the article. 前記燃焼排ガス源がディーゼルエンジンである、請求項１８又は１９に記載の排出処理システム。 20. An emission treatment system according to claim 18 or 19 , wherein the flue gas source is a diesel engine. 燃焼排ガスの流れを処理するための方法であって、窒素系還元剤の存在下で、燃焼排ガスの流れを、請求項１～１７のいずれか一項に記載の触媒物品と接触させることを含む、方法。 A method for treating a flue gas stream comprising contacting the flue gas stream with a catalytic article according to any one of claims 1 to 17 in the presence of a nitrogen-based reducing agent. ,Method. 請求項１～１５のいずれか一項に記載の触媒物品の製造方法であって、前記方法が、銅、鉄、セリウム、若しくはジルコニウム、又はこれらのうちのいずれか２つ以上の混合物の水性塩溶液を用いて、押出バナジウム含有ＳＣＲ触媒材料で形成された触媒活性基材の１つ以上のチャネルの第１の表面を含浸させることと、前記含浸させた基材を乾燥させることと、前記第１の表面に粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを適用することと、を含み、前記粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを含む第１の層を前記第１の表面に配置させる、方法。 16. A method of making a catalytic article according to any one of claims 1-15 , wherein said method comprises an aqueous salt of copper, iron, cerium, or zirconium, or mixtures of any two or more thereof. impregnating a first surface of one or more channels of a catalytically active substrate formed of an extruded vanadium-containing SCR catalyst material with a solution; drying the impregnated substrate; applying to the first surface a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material , said particulate metal oxide. disposing on said first surface a first layer comprising a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a support material. 請求項１～１５のいずれか一項に記載の触媒物品の製造方法であって、前記方法が、バナジウム含有ＳＣＲ触媒材料と、永久結合剤と、銅、鉄、セリウム若しくはジルコニウムの化合物又はこれらのうちのいずれか２つ以上の混合物と、を含む押出可能なペーストを形成することと、前記ペーストを、その軸方向長さに沿って延びる１つ以上のチャネルを含むハニカム形態に押し出すことであって、前記チャネルを通って、使用中に燃焼排ガスが流れ、前記１つ以上のチャネルが、燃焼排ガスの流れに接触するための第１の表面を有する、押し出すことと、前記押し出されたハニカム形態ペーストを乾燥及び焼成することと、前記第１の表面上の粒子状金属酸化物担体材料上に担持された１つ以上の白金族金属を含むアンモニアスリップ触媒組成物のウォッシュコートを適用することと、を含む、方法。 16. A method of making a catalytic article according to any one of claims 1 to 15 , said method comprising a vanadium-containing SCR catalyst material, a permanent binder and a compound of copper, iron, cerium or zirconium. or a mixture of any two or more thereof, and extruding the paste into a honeycomb form comprising one or more channels extending along its axial length. said channel through which flue gas flows in use, said one or more channels having a first surface for contacting said flue gas flow; drying and firing the honeycomb form paste and applying a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material on said first surface; A method, including doing.
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