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公开(公告)号：US09931596B2
公开(公告)日：2018-04-03
申请号：US15503903
申请日：2015-10-21
Applicant: BASF CORPORATION
Inventor： Xiaolai Zheng , Chunxin Ji , Wen-Mei Xue , Matthew J. Schladt , Xiaoming Wang , Tian Luo , Michel Deeba , Knut Wassermann
CPC classification number: B01D53/945 , B01D53/9418 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/2065 , B01D2255/20715 , B01D2255/20761 , B01D2255/2092 , B01D2255/50 , B01D2255/502 , B01D2255/9022 , B01D2255/912 , B01D2255/9207 , B01J23/56 , B01J23/63 , B01J29/005 , B01J29/40 , B01J29/46 , B01J29/7007 , B01J29/76 , B01J29/7615 , B01J29/763 , B01J29/80 , B01J29/85 , B01J35/0006 , B01J37/0244 , B01J37/0246 , B01J2523/00 , Y02T10/24 , B01J2523/25 , B01J2523/31 , B01J2523/37 , B01J2523/3712 , B01J2523/48 , B01J2523/824 , B01J2523/822 , B01J2523/828
Abstract: An emissions treatment system for an exhaust stream of an internal combustion engine including hydrocarbons, carbon monoxide, and nitrogen oxides is provided. The disclosed system can include an exhaust conduit in fluid communication with the internal combustion engine via an exhaust manifold; a first three-way conversion catalyst (TWC-1) located downstream of the internal combustion engine in the exhaust conduit; an SCR-HCT catalyst comprising a selective catalytic reduction catalyst and a hydrocarbon trap downstream of the TWC-1 in the exhaust conduit; and a third catalyst downstream of the SCR-HCT combination in the exhaust conduit, the third catalyst comprising a platinum group metal (PGM) e.g., in an amount effective to oxidize hydrocarbons. Methods of making and using such systems and components thereof are also provided.
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公开(公告)号：US20180038252A1
公开(公告)日：2018-02-08
申请号：US15555117
申请日：2016-03-24
Applicant: BASF CORPORATION
Inventor： Xiaofan Yang , Wen-Mei Xue , John K. Hochmuth , Matthew J. Schladt , Yuejin Li
IPC: F01N3/08 , B01J23/46 , B01J29/76 , B01J35/00 , F01N13/00 , B01D53/94 , F01N3/10 , F01N3/20 , F01N3/035 , B01J23/44 , B01J35/04
CPC classification number: F01N3/0814 , B01D53/9418 , B01D53/9422 , B01D53/944 , B01D53/9445 , B01D53/945 , B01D53/9463 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/20761 , B01D2255/50 , B01D2255/904 , B01D2255/9155 , B01D2258/014 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/464 , B01J29/04 , B01J29/072 , B01J29/763 , B01J35/0006 , B01J35/04 , F01N3/035 , F01N3/0821 , F01N3/0842 , F01N3/101 , F01N3/2066 , F01N13/0093 , F01N13/0097 , F01N2370/02 , Y02T10/22 , Y02T10/24
Abstract: Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream containing NOx, particulate matter, and sulfur. The exhaust gas treatment system comprises: one or more catalytic articles selected from a three-way conversion catalyst (TWC), a lean NOx trap (LNT), and an integrated LNT-TWC; a platinum-containing catalytic article downstream from the one or more catalytic articles; and one or more selective catalytic reduction (SCR) catalytic articles immediately downstream from the platinum-containing catalytic article, the one or more SCR catalytic articles including a molecular sieve. The system stabilizes the SCR catalytic article from poisoning by sulfur.
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公开(公告)号：US10253667B2
公开(公告)日：2019-04-09
申请号：US15555117
申请日：2016-03-24
Applicant: BASF CORPORATION
Inventor： Xiaofan Yang , Wen-Mei Xue , John K. Hochmuth , Matthew J. Schladt , Yuejin Li
IPC: F01N3/08 , B01J23/46 , B01J29/76 , B01J35/00 , F01N13/00 , B01D53/94 , F01N3/10 , F01N3/20 , F01N3/035 , B01J23/44 , B01J35/04 , B01J23/40 , B01J23/42 , B01J29/04 , B01J29/072
Abstract: Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream containing NOx, particulate matter, and sulfur. The exhaust gas treatment system comprises: one or more catalytic articles selected from a three-way conversion catalyst (TWC), a lean NOx trap (LNT), and an integrated LNT-TWC; a platinum-containing catalytic article downstream from the one or more catalytic articles; and one or more selective catalytic reduction (SCR) catalytic articles immediately downstream from the platinum-containing catalytic article, the one or more SCR catalytic articles including a molecular sieve. The system stabilizes the SCR catalytic article from poisoning by sulfur.
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公开(公告)号：US20170274321A1
公开(公告)日：2017-09-28
申请号：US15503903
申请日：2015-10-21
Applicant: BASF CORPORATION
Inventor： Xiaolai Zheng , Chunxin Ji , Wen-Mei Xue , Matthew J. Schladt , Xiaoming Wang , Tian Luo , Michel Deeba , Knut Wassermann
CPC classification number: B01D53/945 , B01D53/9418 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/2065 , B01D2255/20715 , B01D2255/20761 , B01D2255/2092 , B01D2255/50 , B01D2255/502 , B01D2255/9022 , B01D2255/912 , B01D2255/9207 , B01J23/56 , B01J23/63 , B01J29/005 , B01J29/40 , B01J29/46 , B01J29/7007 , B01J29/76 , B01J29/7615 , B01J29/763 , B01J29/80 , B01J29/85 , B01J35/0006 , B01J37/0244 , B01J37/0246 , B01J2523/00 , Y02T10/24 , B01J2523/25 , B01J2523/31 , B01J2523/37 , B01J2523/3712 , B01J2523/48 , B01J2523/824 , B01J2523/822 , B01J2523/828
Abstract: An emissions treatment system for an exhaust stream of an internal combustion engine including hydrocarbons, carbon monoxide, and nitrogen oxides is provided. The disclosed system can include an exhaust conduit in fluid communication with the internal combustion engine via an exhaust manifold; a first three-way conversion catalyst (TWC-1) located downstream of the internal combustion engine in the exhaust conduit; an SCR-HCT catalyst comprising a selective catalytic reduction catalyst and a hydrocarbon trap downstream of the TWC-1 in the exhaust conduit; and a third catalyst downstream of the SCR-HCT combination in the exhaust conduit, the third catalyst comprising a platinum group metal (PGM) e.g., in an amount effective to oxidize hydrocarbons. Methods of making and using such systems and components thereof are also provided.
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