-
公开(公告)号:US10807081B2
公开(公告)日:2020-10-20
申请号:US16272002
申请日:2019-02-11
发明人: Mikael Larsson , David Micallef
摘要: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
-
公开(公告)号:US10201807B2
公开(公告)日:2019-02-12
申请号:US15184055
申请日:2016-06-16
发明人: Mikael Larsson , David Micallef
摘要: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
-
公开(公告)号:US10799832B2
公开(公告)日:2020-10-13
申请号:US15935178
申请日:2018-03-26
发明人: Heledd Howells , David Micallef , Andrew Newman , Neil Greenham
IPC分类号: B01J23/22 , B01J23/42 , B01J23/63 , B01J29/46 , B01J29/76 , B01J29/78 , B01J29/80 , B01J35/00 , B01J35/04 , F01N3/20 , F01N3/28 , B01D53/94 , B01J37/02 , B01J37/00 , B01J37/08
摘要: A catalyst article for treating a flow of a combustion exhaust gas comprises: a catalytically active substrate comprising one or more channels extending along an axial length thereof through which, in use, a combustion exhaust gas flows, the one or more channels having a first surface for contacting a flow of combustion exhaust gas; wherein the substrate is formed of an extruded vanadium-containing SCR catalyst material, wherein a first layer is provided on at least a portion of said first surface, wherein the first layer comprises an ammonia slip catalyst composition comprising one or more platinum group metals supported on titania, a silica-titania mixed oxide, a Ce—Zr mixed oxide, or a mixture thereof, and a second layer is provided on at least a portion of the first layer and comprises an SCR catalyst composition.
-
公开(公告)号:US20190168198A1
公开(公告)日:2019-06-06
申请号:US16272002
申请日:2019-02-11
发明人: Mikael Larsson , David Micallef
摘要: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
-
公开(公告)号:US09943830B2
公开(公告)日:2018-04-17
申请号:US14341890
申请日:2014-07-28
发明人: David Micallef , Alex Parsons
IPC分类号: B01J21/20 , B01J23/54 , B01D53/94 , B01J38/02 , B01J23/02 , B01J35/00 , B01J23/38 , B01J21/06 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/96
CPC分类号: B01J23/54 , B01D53/9418 , B01D53/9436 , B01D53/9468 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/104 , B01D2255/106 , B01D2255/20707 , B01D2255/20776 , B01D2257/406 , B01D2258/01 , B01J21/063 , B01J23/38 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/96 , B01J35/0006 , B01J38/02
摘要: A catalyst article for treating an emission gas is provided comprising (a) an oxidation catalyst comprising at least one noble metal on a WO3—TiO2 support, wherein the support contains about 1 to about 20 weight percent WO3 based on the combined weight of the WO3 and TiO2; and (b) a substrate, wherein the first and second catalyst layers are on and/or within the substrate.
-
公开(公告)号:US20160367938A1
公开(公告)日:2016-12-22
申请号:US15184267
申请日:2016-06-16
发明人: Mikael Larsson , David Micallef , Jing Lu
IPC分类号: B01D53/94 , B01J35/04 , B01J35/00 , B01J29/072 , B01J29/80 , B01J23/42 , B01J29/76 , B01J29/78 , B01J23/22
CPC分类号: B01D53/9418 , B01D53/9477 , B01D2255/1021 , B01D2255/20738 , B01D2255/20761 , B01D2255/9025 , B01D2255/904 , B01D2255/911 , B01J23/22 , B01J23/42 , B01J23/8472 , B01J29/06 , B01J29/072 , B01J29/076 , B01J29/7615 , B01J29/763 , B01J29/783 , B01J29/80 , B01J29/83 , B01J29/85 , B01J35/0006 , B01J35/04 , B01J37/0009 , B01J37/0244 , B01J37/0246 , B01J2029/062 , F01N3/2066 , F01N3/2828 , F01N13/16 , F01N2330/06 , F01N2370/04 , F01N2510/063 , F01N2510/068 , F01N2570/14 , F01N2570/18 , Y02A50/2325 , Y02A50/2344 , Y02C20/10 , Y02T10/24
摘要: A catalyst article having an extruded support having a plurality of channels through which exhaust gas flows during operation of an engine, and a single layer coating or a bi-layer coating on the support, where the extruded support contains a third SCR catalyst, the single layer coating and the bilayer-coating contain platinum on a support with low ammonia storage and a first SCR catalyst. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods for producing such articles are described. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
摘要翻译: 一种具有挤出载体的催化剂制品,其具有在发动机操作期间废气流过的多个通道,以及在载体上的单层涂层或双层涂层,其中挤出的载体包含第三SCR催化剂,单一 层涂层和双层涂层在具有低氨储存和第一SCR催化剂的载体上含有铂。 催化制品可用于废气中NOx的选择性催化还原(SCR)和减少氨滑移量。 描述制造这种制品的方法。 还描述了在SCR过程中使用催化制品的方法,其中氨的滑移量减少。
-
公开(公告)号:US20150031526A1
公开(公告)日:2015-01-29
申请号:US14341890
申请日:2014-07-28
发明人: David Micallef , Alex Parsons
CPC分类号: B01J23/54 , B01D53/9418 , B01D53/9436 , B01D53/9468 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/104 , B01D2255/106 , B01D2255/20707 , B01D2255/20776 , B01D2257/406 , B01D2258/01 , B01J21/063 , B01J23/38 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/96 , B01J35/0006 , B01J38/02
摘要: A catalyst article for treating an emission gas is provided comprising (a) an oxidation catalyst comprising at least one noble metal on a WO3—TiO2 support, wherein the support contains about 1 to about 20 weight percent WO3 based on the combined weight of the WO3 and TiO2; and (b) a substrate, wherein the first and second catalyst layers are on and/or within the substrate.
摘要翻译: 提供了一种用于处理排放气体的催化剂制品,其包含(a)在WO 3 -TiO 2载体上包含至少一种贵金属的氧化催化剂,其中载体包含约1至约20重量%的WO 3,基于WO 3 和TiO2; 和(b)基材,其中第一和第二催化剂层位于和/或内部。
-
公开(公告)号:US10828603B2
公开(公告)日:2020-11-10
申请号:US15939419
申请日:2018-03-29
发明人: Hai-Ying Chen , Joseph Michael Fedeyko , Neil Greenham , Mikael Larsson , Jing Lu , Per Marsh , David Micallef , Andrew Newman
IPC分类号: B01D53/94 , F01N13/00 , F01N3/20 , F01N3/10 , B01J37/02 , B01J35/00 , B01J35/04 , B01J29/80 , B01D53/58 , B01J21/06 , B01J23/22 , B01J23/30 , B01J23/42 , B01J23/44 , B01J23/648 , B01J23/652 , F01N3/035
摘要: A catalyst article including a substrate with an inlet end and an outlet end, a first zone and a second zone, where the first zone comprises: a) an ammonia slip catalyst (ASC) bottom layer comprising a platinum group metal on a support; and b) an SCR layer comprising a second SCR catalyst, the SCR layer located over the ASC bottom layer; where the second zone comprises a catalyst (“second zone catalyst”) selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); wherein the ASC bottom layer extends into the second zone; and where the first zone is located upstream of the second zone. The ASC bottom layer may include a blend of: (1) the platinum group metal on a support and (2) a first SCR catalyst.
-
9.
公开(公告)号:US20160367973A1
公开(公告)日:2016-12-22
申请号:US15184055
申请日:2016-06-16
发明人: Mikael Larsson , David Micallef
CPC分类号: B01J29/763 , B01D53/9418 , B01D53/9436 , B01D53/9472 , B01D2255/1021 , B01D2255/1023 , B01D2255/2092 , B01D2255/50 , B01D2255/9037 , B01D2255/915 , B01J21/04 , B01J23/42 , B01J23/44 , B01J35/0006 , B01J35/04 , Y02C20/10 , Y02T10/22 , Y02T10/24
摘要: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
摘要翻译: 具有氨滑移催化剂(ASC)的催化剂制品,其包含载体上的铂与低氨储存和第一SCR催化剂的共混物,以及第二催化剂,例如柴油氧化催化剂,柴油放热催化剂(DEC),NOx 吸收剂,选择性催化还原/被动NOx吸附器(SCR / PNA),冷启动催化剂(CSC)或三元催化剂(TWC)。 催化剂制品还可以含有一种或两种另外的SCR催化剂。 催化剂可以以各种构型中的一种存在。 催化制品可用于废气中NOx的选择性催化还原(SCR)和减少氨滑移量。 还描述了在SCR过程中使用催化制品的方法,其中氨的滑移量减少。
-
公开(公告)号:US10518255B2
公开(公告)日:2019-12-31
申请号:US16272002
申请日:2019-02-11
发明人: Mikael Larsson , David Micallef
摘要: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
-
-
-
-
-
-
-
-
-